Author Archives: Rudy

Hot water cylinder repairs in Auckland

Checkout some of our latest hot water cylinder repairs in Auckland!

We pride ourselves with over 1500 Hot water cylinder repairs in 2017. Hot Water Cylinders NZ is your #1 water heater specialist in repairs and replacements. If you have a fault, talk to us.

Repaired faulty cold water expansion valve.

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New Pipework due to leaks

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Resealing of incoming connections

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Installation of new Rheem Stellar

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Replacement of fault change over regulator

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Repair of exiting Rheem Instant water heater

Auckland_gas_hot_water_repair

Repair of gas leak

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Replacing existing low pressure hot water cylinder limiting valve

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Temporary hot water cylinder installation to accommodate renovations

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Inlet valve and pipe repair

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Replacing therm couple on gas hot water cylinder

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Gas valve repairs on Rheem Stellar

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what_is_ripple_control

What Is Ripple Control?

Have you ever looked at your hot water cylinder only to find that it was not operating? Upon inspection, you find that there is nothing wrong with it. So why is it not running?what_is_ripple_control

What you are seeing is the result of a type of power load management, know as ripple control. Load management is used to allow utilities to reduce electricity demand during peak usage times. This is a cheaper and more reliable alternative to using peaking power plants, of which some can take more than an hour to bring online, which makes load management even more critical if a plant goes offline unexpectedly.

Ripple control is the most common form of load management, and is used in many countries worldwide. It works by superimposing a high frequency signal, usually between 100 and 1600Hz onto the standard 50-60 Hz main power signal. When devices which are attached to the non-essential loads receive this signal, they shut off the load until the signal is disabled. Affects devices can include residential electric hot-water heaters, air conditioners, pool pumps and crop-irrigation pumps. This includes your hot water cylinder.

ripple_control_hot_water_cylinderWhen connected to a power network that runs load control, devices are outfitted with communicating controllers that run a program that limits the duty cycle of the device. Consumers are usually rewarded for adhering in the load control program by paying a reduced rate for energy in off-peak times. Controllers are available for ripple control which will ensure your devices run during off-peak times and you will save money by paying a lower tariff.

To find out more about ripple control for your water heater, talk to us today. If you are not on ripple control and you don’t have hot water, check out our “No Hot Water Troubleshooting Page” to diagnose the problem.

Hot_water_cylinder_faults_no_hot_water

Your Cylinder May Just Need A Repair, Not A Replacement

Your cylinder may just need a repair, not a replacement.
Does your hot water cylinder suffer from one of the following conditions?

  • No Hot WaterHot_water_cylinder_fault_repairs
  • Very Low Temperature
  • Knocking (Banging) Noises
  • Hot Water Smells
  • Low Pressure
  • Leaking Hot Water Cylinder
  • Damaged Hot Water Cylinder
  • Discharge Valves Running Constantly

First things first, DON’T PANIC!

Your hot water cylinder may be repairable.

Hot Water Cylinders NZ provide unique repair options for most hot water cylinder related faults. Before jumping into an expensive replacement, get the professionals in to investigate and repair the problem at a fraction of the cost.Fault_hot_water_cylinder_element

Hot Water Cylinder Faults and Remedies

NO HOT WATER (Temperature)

Possible Faults: Faulty thermostat, faulty element, blown fuse, power provider ripple control.

Possible Remedies:  Replace thermostat, replace element, replace fuse, unsubscribe, ripple control.

Hot_water_cylinder_faults_no_hot_waterNO HOT WATER (Physically)

Possible Faults: Blocked tempering valve, blocked strainer, incoming water problem, various possible blockages, damaged valve.

Possible Remedies: Process of elimination, identify fault and repair.

VERY LOW TEMPERATURE (or High/Low Fluctuation)Blocked_tempering_valve

Possible Faults: if applicable, incorrect controller or thermostat settings, damaged element, damaged or wrongly set tempering valve, damaged diffuser, possible blockages, tapware problem.

Possible Remedies: Change thermostat and/or controller, tempering valve settings. Process of elimination, identify fault and repair.

KNOCKING OR BANGING NOISE (Water Hammer)

water_hammerPossible Faults: This fault can appear when upgrading from low to mains pressure. Existing pipework not fixed properly, plumbing priority wrong, too much pressure, damaged valves, damaged or unsuitable tapware.

Possible Remedies: Find and fix loose pipework, improve existing priority, install water hammer arrestor. (For more information please view our “what is water hammer” blog.)

HOT WATER SMELLS BAD

Possible Faults: (External Smell) Typically an issue that relates to older cylinders or cylinders that have been slowly leaking internally (element thread or minor crack) for longer periods of time. When the insulation between the casing and tank is wet for a long period of time, it will rot and start to smell. (Internal Smell) A bad smell coming from the tap when hot water is running may be caused by the following: Bacterial growth due to minimum HWC temperatures not being met, accumulated sludge/rust caused by insufficient protection against electrolysis(?) due to the breakdown of a sacrificial anode. Incoming water affected by filthy water tanks or non-treated roof water. Note that smell is heightened by the higher water temperature.

Possible Remedies: Replace hot water cylinder, process of elimination, identify fault and repair.

LOW PRESSURE

low_water_pressure_hot_water_cylinderPossible Faults: This fault will depend on whether it’s an existing low pressure problem or whether it’s a new low pressure problem. (Existing) Existing low pressure system and no fault, damaged pressure reducing valve, incoming pressure changes, tapware, related valve issue, excessive sludge/debris blocking outlet. (New) Tapware, blockages, valves, incoming pressure.

Possible Remedies: (Existing) Replace/repair valves/tapware, remove blockages, insert booster pump, upgrade to mains pressure. (New) Replace/repair valves/tapware, remove blockages. Process of elimination, identify fault and repair.

Leaking_hot_water_cylinderLEAKING HOT WATER CYLINDER

Possible Faults: Split welded seams or welded connections caused by various reasons including thermal expansion and contraction, typically seen with older leaking hot water cylinders, loose fitting, damaged fitting/valve, overheating causing condensation, worn element washer.

Possible Remedies: Repair leak where possible, hot water cylinder replacement.

DISCHARGE VALVES RUNNING CONSTANTLY

Possible Faults: In most cases there is no fault at all. The cold water expansion valve (considered the energy valve) may discharge up to 20L/day in very hot weather and no hot water usage. The idea is to discharge cold water instead of hot water to save on power which is much more expensive than water. Faulty valve, faulty TPR, debris blocking valve spring.

Possible Remedies: Follow manufacturing instructions to manually discharge water from valve to remove debris, regularly maintain valves, repair or replace faulty valves.

In some cases a repair is not possible or recommended, especially if it’s not economical or safe to do a repair. Depending on the fault, our team is trained to make the recommendation that will assist you with your budget and requirements.

WARNING!! When older cylinders are repaired or an element is replaced, they must be drained to enable the process of repair. This draining will cool down the cylinder tank and reduce its pressure. Consequently higher expansion and contraction will take place when the cylinder is re-pressurised (refilled with water). This process may result in an already poorly welded tank seam cracking which would result in a leak. The danger is that a seam cannot be repaired and a full cylinder replacement would be required, rendering the original repair redundant.

This information may be updated regularly to accommodate new information. 

water_hammer

What Is Water Hammer

Do you hear banging or knocking coming from your water system? Often times we get people reporting a banging noise coming from the water system, but there is nothing hitting any of the pipes or parts. This phenomenon is called Water Hammer. How is this caused?

Water hammer is caused when the valves are shut off, and the sudden stoppage of the water causes a sudden spike in pressure which reverberates through the pipes, causing them to rattle and shake, and produce the knocking noise. Areas that commonly have water hammer issues include:

  • Flush valveswater_hammer
  • Solenoid valves (washing machines, dishwashers and zip boiling units)
  • Ceramic disc tap ware
  • Full flow ballcocks
  • Long runs of pipe
  • Pumps
  • Worn out valves

What can you do to stop this noise? The solution to this comes by means of a device knows as a Water Hammer Arrestor. What this device does is it provides a comprehensible cushion of air in the system, so when pressure occurs the water is pushed against this air which absorbs this spike. You want this placed as close as possible to the offending valve, pipe or area where the banging is occurring. Depending on the pipework system and how extensive it is, you may need to use multiple arrestors to effectively solve this situation.

 

water_hammer_installationTypes of water hammer arrestors

Single Chamber Water Hammer Arrestor – A commonly used arrestor, these are most often used on 12mm pipe and are easily installed onto any section of pipe where it is needed. Its sealed air chamber absorbs the energy from pressure spikes in the water pipe system. These arrestors are made of copper and sustain water temperatures up to 80ºC. The benefit of these arrestors are that they can be installed at any angle to the main pipe. If a threaded joint is not available to attach the arrestor, it can be soldered into place on a T-joint and fitted into the existing pipe, taking up little space behind the wall panel.

Mini End Stop Water Hammer Arrestor – This type of water hammer arrestor is designed to be directly attached to the hose connection of a washing machine, dishwasher, or other water-using appliance. It comes with a 90-degree angled fitting and a threaded end and can be used on a range of pipes from 12mm to 25mm. They can be screwed to a threaded fitting or soldered directly into the pipe itself. While they work best installed at 90 degrees, they work at any angle. Like the single chamber arrestors, these only need minimal space behind any interior wall.

Hose Bib Style Water Hammer Arrestor – These are ideally suited to be used directly on the water intake on washing machines, as they can handle higher water volumes pressures than the other types. These have a wide PVC housing with an internal diaphragm to disperse the shock of water flowing through a quick closing valve. They are larger in diameter and therefore not suited for installation inside a wall. They also tend to be the most expensive to purchase and install.

To read more about RMC water hammer arrestors see the following:

pdfRMC – What Is A Water Hammer?

Water Hammer Faults And Remedies

legionella_bacteria_hot_water_systems

Make Sure Your Hot Water Is Hot Enough!

If you try to save power by reducing your hot water cylinder temperature, you need to be very careful. The following may also happen to you:

https://www.stuff.co.nz/national/health/96161836/water-cylinder-warning-after-nelson-bays-family-develops-rash-after-showering

legionella_bacteria_hot_water_systemsCases of Legionella have been popping up as people have fiddled with their hot water cylinders, lowering the temperature in an attempt to save on heating costs. But this can cause a serious problem.

Hot water cylinders should normally be set to a minimum 60°C. At this temperature, bacteria cannot survive, and therefore keeps your water clean. When you set the temperature lower than this, it becomes an optimal breeding ground for Legionella bacteria, which is the main concern for hot water systems in New Zealand.

Some people, however, think that by lowering the temperature that the hot water cylinder is set at, they will save power. While this can work, going below 60°C is not safe, because this is the perfect  temperature range for the bacteria to grow.

make_sure_your_hot_water_is_hot_enough

What is Legionella?
Legionella is an aquatic bacteria that lives in warm water conditions. It is the cause of Legionnaires disease and is commonly found in potable water supplies, hot tubs, cooling towers, fountains, swimming pools and so on. It breeds in warm water temperatures of 20-45°C. This is why it is recommended to keep your cylinder above 60°C, they cannot survive at these temperatures.

tempering_valveMost cylinder manufactures these days such as Rheem have a prevention lock on the thermostat which restricts people from reducing the temperature via the thermostat. In most cases, it is only possible with older models, however we have come across several systems where DIYers have dropped the temperature through various methods despite the thermostat lock by manipulating components. This results in damage and invalidation of warranties.

If you are looking for ways to save on water heating, speak to us today about upgrading to a more efficient hot water system. Don’t risk your health to save a few dollars!

 

 

 

Rinnai_mains_pressure_enamel_cylinders

New Range Of Rinnai Mains Pressure Enamel Indoor/Outdoor Cylinders

Rinnai is introducing a new range of mains pressure enamel cylinders for indoor and outdoor installations. This range is the latest addition to their completely revised and improved electric hot water cylinder collection.

Rinnai_mains_pressure_enamel_cylinders

This new range will replace the current Hotflo Mains Pressure Enamel cylinders. The new cylinders feature a coloured steel outer case and are weatherproof, so outdoor fitment is an option. We have been running down our stock levels of the current Hotflo range of cylinders and will be selling the new range as stock depletes.

The new range will also replace some of the existing mains pressure enamel cylinders in the Rinnai range. This table highlights the existing and new range of cylinders:

New_rinnai_mains_pressure_enamel_cylinder_range
pdfRinnai Mains Pressure Enamel Hot Water Cylinders

Please note that the port positions and other dimensions on the new cylinders are different to the current range. This means that it won’t be a straight swap, and some work may be required to fit the new cylinder. Please be aware of this when replacing your cylinder, as it could add to the cost of the installation.

If you are looking at replacing your cylinder and not sure if the new Rinnai mains pressure hot water cylinders will be suitable for you, contact us or give us a call on 0800 429 546 and we will be happy to advise you.

igniting_your_hot_water_cylinder

Read Before You Light Your Gas Cylinder

If you have a gas hot water cylinder in your home, sometimes you may have to shut the gas off or the pilot flame may extinguish which will require you to re-ignite your gas hot water. Here are the “dos and don’ts” before you apply ignition, taken from instructions supplied with gas cylinders.

igniting_your_hot_water_cylinderDO NOT LIGHT HEATER UNTIL FULL OF WATER

Gas water heaters are designed to operate reliably and safely as long as the operating instructions are followed exactly. You must comply with these lighting instructions at every stage.

A. The water heater is equipped with an igniter button which lights the pilot. When lighting the pilot follow these instructions exactly.

B. Before lighting ensure there is no smell of gas around or in the vicinity of the water heater and the burner opening. Be sure to smell next to ground level as some gases can settle there

C. WHAT TO DO IF YOU SMELL GAS

    • Do not try to light the water heater
    • If the gas small is throughout the room, turn the gas control knob clockwise to the “●” (off) position and then turn off the ignition valve on the gas line to the water heater.
    • Leave the room and call Rheem Service or a qualified service technician.

D. Use only your hand to turn the gas control knob, never use tools. If the control knob will not turn by hand, don’t try to repair it, call a qualified service technician. Force or attempted repair may cause a fire or explosion.

E. Do not attempt to operate this water heater if it has been damaged. Call a qualified service technician.

LIGHTING INSTRUCTIONS

  1. STOP, READ THE SAFETY INFORMATION ABOVE.
  2. TURN THE GAS CONTROL KNOB FULLY CLOCKWISE TO THE “●” (OFF) POSITION. REMOVE THE FRONT COVER BELOW THE GAS CONTROL.
  3. WAIT FIVE (5) MINUTES SO ANY BUILD UP OF UNBURNT GAS CAN ESCAPE. IF YOU THEN SMELL GAS, STOP AND FOLLOW THE “C” IN THE SAFETY INFORMATION. IF YOU DO NOT SMELL GAS, PROCEED TO STEP 4.
  4. Turn the knob to the (pilot) position.
  5. Depress the knob fully (until star disappears below housing) and after 30 seconds, whist keeping the knob depressed, repeatedly press the igniter button(for up to 40 seconds ) until the pilot light ignites.
    Warning: Keep your face clear of the combustion chamber opening while pressing the lighter.
    Note: It is not possible to depress the knob fully if the gas control has activated as safety shut-off feature. In this case, wait 60 seconds for the gas control to reset.
  6. Keep the knob depressed for 20 seconds after the pilot flame lights.
  7. Release the knob and check the pilot is still alight. The pilot can be checked by looking through the large opening below the gas control.
  8. If the pilot light has failed to light or has not remained alight, turn the gas control knob to the “” (off) position. Wait five (5) minutes for any unburnt gas to escape and then begin again at step 3.
    Warning: Failure to wait five (5) minutes may result in a fire or explosion.
  9. When the pilot flame remains alight with the gas control knob released, turn the knob anticlockwise to the numbered setting that will provide the water temperature of about 60°C. Refer to the rating label for this setting. Refit the front cover securely.
  10. Turn the knob to a higher number for a high water temperature if required.
  11. If the main burner does not light at the selected setting, the water may already be at the selected temperature.
    Note: Never press the igniter button while the top knob is in a numbered position.

TO TURN OFF GAS APPLIANCE

  1. TURN THE GAS CONTROL KNOB TO THE “●” (OFF) POSITION.
  2. TURN OFF GAS ISOLATION VALVE
    To maintain safety and efficiency, this heater should be serviced annually by an authorized service agent.

Following these instructions will ensure that you operate your gas hot water cylinder safely and any risk is minimised. If you need assistance or are unsure how to do these steps, call us on 0800 429 546 before doing anything to your cylinder.

Bosch_hydropower_16H

Gas Water Heater Reviews

If you are considering upgrading to gas, you no doubt want to know which gas heaters you should be looking at. If you are new to gas systems, it can all be a little overwhelming. So we have decided to review five popular gas water heaters so that we can help you decide what’s right for your home.

Rheem_27_Continuous_Flow_Hot_Water_HeatersRheem 27 Continuous Flow Gas Heater

The Rheem 27 is an extremely popular unit in New Zealand for gas. Available in both NG and LPG, these are a low cost solution to gas water heating for people looking to switch over from electric, or to upgrade their old gas water heater.

The Rheem 27 offers an economical 2 litre per minute start up rate. What this means is that it reduces water wastage by heating water much sooner than other gas water heaters, which require up to a 3 litre minimum. Because of this. it also lends itself to use with efficient tap-ware.

Other features include:
  • 6 Star efficiency
  • Improved minimum flow start-up
  • 10 year pro-rata warranty on the heat exchanger
  • 3 year warranty on parts and labour
  • Digital display for easy fault diagnosis and servicing
  • Full technical support through the Rheem National Service Network
  • Unique Flame Safe overheat protection system

Bosch_hydropower_16HBosch Hydro Power 16H

The Bosch Hydro Power 16H delivers a 16 L/min flow rate and is available in natural gas or LPG. What is special about this unit is that it ignited without a power point or standing pilot light. This unique technology works by utilising the energy of the water flow to ignite the burner and begin the heating process. It only ignites when the hot tap is opened, and shuts off when it’s closed. This makes for a very efficient unit which is easy to install.

This unit is suitable for 1-2 bathroom homes.

Other features:

  • Continuous flow technology
  • Delivers 16 L/min at a 25°C temperature rise
  • External installation
  • No electricity or standing pilot light required
  • Energy efficient
  • Simple installation
  • Comprehensive warranties

Rinnai INFINITY VT26

Rinnai_inifinty_vt26The Rinnai INFINITY VT26 is a continuous flow gas water heater suitable for external residential installations. The VT26 features an improved start-up flow rate, which saves you water and ensures your water heater is future proof for water efficient tapware upgrades. Available in both NG and LPG, it is perfect for homes with 1-2 bathrooms and high simultaneous hot water demand. It can be used on both mains and medium pressure systems.

The VT26 also works with a range of controllers for kitchens and bathrooms which have features including options to run water for you to fill a bath at a certain temperature and tell you when it’s ready. It also has a range of accessories such a recessed installation box, pipe covers, flue diverters and more.

Other specs and features include:

  • Efficiency of 80%
  • Energy star: 6.1 star energy equivalent
  • Hot water capacity: 1.8-26 L/min
  • Nominal water capacity: 26 L/min, 1560 L/h
  • Input on max: 199 MJ/h
  • Output on max: 44.2 kW
  • Water supply: 130-1000 kPa

Why should you convert to gas water heating?

Gas water heating systems provide a range of benefits over traditional electric water heaters. Gas continuous water heaters are more efficient than electric water cylinders, and provide contiunous hot water, meaning you will never run out as long as you have gas. You’ll also free up space in your home with the removal of the cylinder. Gas water heaters can also work with digital controllers to allow specific water temperature for certain instances, such as filling a bath.

If you want to upgrade to gas water heating for your home, talk to us today on 0800 429 546.

rinnai_tpr_valve_insulation_kit

The New Rinnai TPR Valve Insulation Kit

After substantial market demand, Rinnai is pleased to announce that they have released a temperature and pressure release valve (TPR) insulation solution which is now available as a kit. This is suitable for use with all variants of Rinnai indoor mains pressure hot water cylinders.

rinnai_tpr_valve_insulation_kitA TPR valve can get very hot; almost as hot as the hot water cylinder it is fitted to. The resulting heat loss and energy consumption from this can be significant, and greatly reduces the energy efficiency of the hot water cylinder. To solve this issue Rinnai has come up with a unique TPR insulation solution.

The insulation is made from closed cell neoprene and reduces heat loss by up to 150W of energy over a 24-hour period. It is made of highly durable material and is one size fits all. The insulation kit comes pre-cut and is very simple to install. View installation instructions here.

This kit comes prepacked with selected Rinnai mains pressure cylinders. This TPR kit also allows you to retrofit it onto existing cylinders, so you can take advantage of this even if you already have your cylinder installed.

You can find this kit on our website here.

ecospring_es300_hot_water_heat_pump

Ecospring 300L Heat Pump Hot Water Cylinder

We will be doing a new series in our monthly blogs, reviewing products from our range and providing you with the information you need to help you make an educated decision when selecting a hot water system for your home.

Have you heard of the Ecospring ES300? This is a 300L heat pump hot water cylinder unit designed to provide you efficient water heating but utilising a heat pump system to heat your water. How does heat pump water heater work?

The basic process is as follows. A fan draws in air through an evaporator. Thermal energy from the air is transferred to a liquid refrigerant causing it to change into a gas.The refrigerant gas is then drawn into a compressor which increases its pressure and thus increases the temperature. A condenser or heat exchanger then transports the hot gas refrigerant around the outside of the water tank. This heats the water inside the tank and the gaseous refrigerant transforms back into a liquid. The pressure of the refrigerant is reduced as it goes through an expansion valve and returns to the evaporator for the process to start again.

ecospring_es300_hot_water_heat_pumpSo why is the Ecospring ES300 a good option for a heat pump water heater?

PROS OF THIS PRODUCT

The Ecospring 300L heat pump water heater is a very efficient water heating unit, with a large storage capacity for ensuring you have a large amount of hot water on hand for when you need it. Being large enough for a 3+ person household, this unit is an excellent choice for families and larger homes. It also has the ability to switch to e-Heater mode, which means it runs like a normal electric hot water cylinder, without the heat pump. This is useful in cold conditions, where this is not enough heat in the air for the heat pump to work efficiently.

The Ecospring ES300 is a bit more expensive than similar competitor units, so you may have to pay a bit more for your initial investment, but you will also be getting a bit more for your money. E.g: Unlike similar models with 2 KW elements, the Ecospring includes a 3KW immersion element which kicks in at a predetermined temperature to ensure quick recovery when high usage occurs. We highly recommended you put specs next to each other when comparing products and then ask yourself the question “why?”. It’s good to make an educated decision with such investments.

On the Ecospring ES300, the heat pump is built into the cylinder, making it compact and affordable in comparison to buying both parts separate, like you would with a traditional heat pump unit. It also contains the following features:

Advanced Controls. The advanced EcoSpring Heat Pump Hot Water Cylinders allow you to control your own hot water requirements with an easy to use Control Panel.

Hybrid Mode. While the unit uses the heat pump as its primary means to heat the water, the standard electric elements will activate if the ambient air temperature is below -7°C.

e-Heater Mode. This mode shuts off the heat pump and only uses the electric elements to heat the water, just like a standard electric water heater. eHeat mode allows for operation in colder situations (less than -7°C) where the heat pump would not function ideally.

Indoor/Outdoor installation. Designed to withstand weather, this unit can be installed inside or outside. It has a standard electrical connection, standard cold water inlet and hot water outlet.

What is a COP value?

COP – Coefficient Of Performance – Is the measurement of efficiency of refrigerant systems including heat pumps.The COP value is the ratio between energy usage of the compressor and the amount of useful heat extracted from the condenser in a heat pump. A high COP number represents a high efficiency. For a heat pump, a COP of 4 means that 1 kW of electric energy is required to produce 4 kW of heat at the condenser. On the evaporator side, 3.0-3.5 kW of heat is extracted. The additional heat is produced by the compressor. For a heat pumps, COPh is generally used as it is a slightly different measurement to that of a refrigerant system. In this abbreviation ‘h’ means heating.

The COP rating in (W/W) of the Ecospring ES300 is:

COP (W/W)
Economy 3.60
Hybrid 3.60
E-heater 1.00

pdf Ecospring 300 manual PDF

CONS OF THIS PRODUCT

What are the biggest challenges for heat pump hot water cylinders?

While these units are very efficient, the best of these units are more expensive than electric units and can be more prone to failure than electric water heaters. Installation is also trickier, as they need a supply of warm air to be able to run efficiently. This can be a disadvantage in colder climates and during the winter.

Cold Weather Performance

Heat pump cylinders are not an optimal choice for homes in cold climates. Since they draw heat from the surrounding air, their benefit is marginal at colder temperatures.

Indoor Installation Challenges

Because of how these cylinders work, indoor installation is not ideal if it is not a split system. The problem being that the heat pump extracts the heat from the air around it, which means it exhausts cool air. if the unit is installed in an enclosed area, it will cool that air very quickly and keep feeding on it’s own colder air. This means that the heat pump will have less heat to extract from the surrounding air, slowing down the heating process, wasting power and extending the run time of your heat pump every time it runs to heat your water.

A heat pump needs a good air flow around it, it needs to be able to get fresh warm air in on one side and somewhere to push the cold air away. With split systems, the heat pump can be installed outside and the tank inside, and they work very well in this way.

Noise

They do make a low humming sound similar to an air conditioner while operating. This should be taken into account when deciding where to install the unit.

Repair Costs

It is common with heat pump cylinders that you will be facing repairs very soon after the warranty expires, which is coincidentally around the time your investment begins to pay itself off.

VALUE FOR MONEY

At this point you will no doubt be asking if it is worth investing in this hot water heat pump and what the pay off rate will be. This will depend on your needs and installation. If you need big storage but don’t use a lot of hot water regularly, a heat pump water heater is worth the investment as it can save you up to 65% or even more on energy costs. This means a quick rate of payback for a superior water heating system. You will not be left without hot water any more so than what you would be with a regular electric cylinder, if you are a heavy hot water user.

FINAL STATEMENT

A heat pump water heater is definitely a good choice for high hot water users, providing an immediate ROI, with the water heating systems being up to 300% more efficient than conventional water heating systems. And the Ecospring ES300 is no back bencher. If you are looking for a heat pump water heater that is extremely efficient and will make sure you will always have hot water waiting for you, you can’t go wrong with the Ecospring ES300.

Alternative Product ComparisonBosch_compress_3000_hot_water_heat_pump

The Ecospring ES300 is similar to the Bosch 3000 heat pump hot water cylinder unit. The Bosch 3000 unit is an excellent German made unit, however it is made with German conditions in mind. Due to their cold winters, this unit has been designed to run effectively in very cold weather. While this is an excellent positive, and means that it needs to work less to achieve a high kW output in New Zealand where it gets no where near as cold. However, it only comes in 2kW element configuration. It takes a long time to heat 300L of water with a 2kW, and if hot water is in high demand, this unit might not keep up and your teenagers may end up having cold showers. This means that while you will save on energy costs, but it will require a change of lifestyle to adapt to using this unit.

Bosch 3000 Features

• Highly efficient heat pump – reduces energy use by up to 65% when compared to conventional electric storage
• Eligible for generous government rebates
• Smart Controls to:
• Allow user to set operating time systems
• Operate with PV solar electric systems to optimise energy efficiency
• Low noise performance and additional noise reduction timer function
• Designed for easy and low-cost install and servicing
• The heat pump operates from -7°C to 40°C, delivering energy efficient hot water even in colder climates

We currently have a deal on our Ecospring 300L Hot Water Heat Pump with free shipping. Have a look at our online store and buy yours today!