Ruud Hot water cylinders (Ruudglas Pacemaker DV)

Ruud_hot_water_cylindersIn this picture you can see two old gas powered Ruud hot water cylinders. The flues have been installed without a down draft diverted using a powered flue to remove products of combustion. These  cylinders have lasted 10 years and its amazing to see that both show the same signs degradation. The most challenging part of this job is that the cylinders have been installed in the worse place possible. Down three sets of stairs in a lower level that is over 300 meters away from vehicle access. It will be a logistical challenge! The job description is to remove the two gas powered cylinder and replace with one storage tank which will include a heat exchanger powered by a system 24KW system boiler. The storage tank will allow us to maintain the existing plumbing arrangement which also includes a ring main. The new system will be saving on operating and maintenance costs straight away! The old powered flue can also be removed as the new unit comes with a compact flue arrangement that can routed as required. This area if fully ventilated hence all building and code requirements can be met. With more sophisticated jobs such a this planning is paramount. Experienced installers can save you money and hassle! If you are looking at replacing your old gas hot water cylinder with an instant water heater, please view our instant water heater specials here.

Its been a busy week for hot water cylinders!

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2015 has just started and we are already in full gear!

All these leaky hot water cylinders can now only be disposed of as scrap metal. The mixture is never the same. Sometimes we have more mains pressure cylinders and sometimes only low pressure. A few months ago we even replaced 8 external gas Vulcan Freeloaders in 3 weeks! Its funny how the trend goes and very interesting to watch such anomalies.

Hot water cylinders LTD has many upcoming specials in 2015.  Some of these include:

  • Mains Pressure conversions
  • Instant gas hot water conversions. (gas water heating)
  • Stainless Steel upgrades.
  • Relocating internal hot water cylinders externally.
  • Complete services and maintenance programs.

To get your obligation free quote on replacing or repairing your hot water cylinder, please call us on 0800 429 546 or email quotes@hotwatercylinders.nz

No Hot Water on New Years :(

no_hot_water_testingThe last thing you need when you come back from holiday is to find your hot water cylinder has stopped working especially when you urgently just want to take a shower! Many people tend to turn their hot water cylinders off during this time. This in itself is not a problem unless your hot water cylinder is 10+ years old. Turning off the power to your hot water cylinder will of course allow the body of water inside the tank to COOL OFF, this is something your hot water cylinder is not used too as water is constantly maintained at 60 degrees. This “cooling off” will result in extreme contraction of the tank itself which initially does not cause the leak. Most Aucklander’s will coming back from holiday and the first thing they do is switch on the power to the hot water cylinder which will immediately power-up a 3KW element which in return will heat up the body of water back to 60 degrees in a relatively short mount of time. This will now cause the tank to expand very quickly. Depending on age this is when your hot water cylinder might spring a leak! Unfortunately we cannot give you advice whether to keep the power on or off during your absence but encourage you get your hot water cylinder serviced prior to going on holiday to ensure you don’t come back to any nasty surprises. In the image above the home owner was very fortunate that only the immersion heating element was damaged. Replacement of the element was under $200 and included a full check of the thermostat and hot water heating system.

30 year old Simplex hot water cylinder

simplex_hot_water_cylindersIt’s amazing how many of these Simplex hot water cylinders we come across in the Auckland area. This year we ripped out more than 100 Simplex hot water cylinders! In most cases the hot water system was converted to a main pressure system which required an installation of an additional drain and mains pressure valves. In this picture you can clearly see that only means of safety available is the open vent which deals with any expansion (sometimes caused by over heating). There is no tempering valve, no expansion valve and no drip try. Its amazing that these copper cylinders can last up to 35 years without bursting. Usually the only reason they do end up bursting or rusting away is because the thermostat fails which results in the element overheating the water to 99 degrees and this puts more stress onto the tank resulting high level expansion and contraction cracking the weld. Quality of water is also a big contributor to rust and life expectancy of a copper hot water cylinder.

Has your cylinder burst before the recommended expectancy? Maybe its a good idea to investigate the cause before installing your new one to ensure your new hot water cylinder lasts much longer.

External Rheem 135L Stainless Steel

external_rheem_hwcGreat looking installation! If only the weather boards behind the hot water cylinder looked as good :). This stainless steel 135L Rheem main pressure was completed in just under 4 hours! It included a new mains pressure valve pack, restraint strapping, all external copper pipe, electrical and plumbing work for just under $ 2300 including GST!

Hot Water Cylinders Ltd has a huge amount of Rheem stainless steel hot water cylinder stock that has to get out! Our range includes 135L, 180L and 200L stainless cylinders. Suitable for external installations these cylinders will also allow you to relocate your internal cylinder at an absolutely unbeatable price. Call us today on 0800 4 Cylinders for more information, our team is here to help you right away.

Do you already have a quote? Call us and we will beat it, that’s a guarantee!

Do you want to convert to instant gas water heating?

rheem_27_instant_gas_water_heaterAn instantaneous water heater only heats water once an outlet is opened and the hot water comes out instantly. It will continuously heat water as it passes through the unit. When the outlet is closed, the energy source shuts off. As these units heat cold water as it flows through the heater, storage of hot water is not required, saving you hundreds of $$ every month!

In can be installed virtually anywhere but its main advantage is that it is ideally suited for for single point applications. It is fueled by either electricity or gas. instantaneous units are designed for mains pressure supply and can have a maximum operating pressure of up to 1000KPA.

Depending on the size of your home the instant water heater must be sized correctly to ensure your flow of hot water does not starve out. Most common sizes are 20L/Minute 27L/Minute and 32L/Minute. In the example above we have installed a Rheem 27 to a 2n bedroom villa in Remuera.

Click here to view the specifications RHEEM 27 Continuous Gas Heater

These units are available in LPG and Natural Gas and can be installed from $ 2800 including GST, all involved materials and gas certification. This offer does not include the electrical power point but can be arranged for $ 350  + GST. Contact us on 0800 4 Cylinders for more information.

Reclaiming your Hot Water Cylinder Cupboard

Rheem_stellarAnother happy home owner that has gained enough additional home space that will allow him to increase the size of his bathroom. Especially in small units with the current Auckland market price per square meter home owners are reclaiming their hot water cylinder cupboards! If you have the space outside you can get it out of the house. If your hot water cylinder is leaking or your looking at upgrading to mains pressure then its a great time to look at such a change. The cost is about $500 more than the standard installation and the benefits are huge!

This Rheem Stellar special we are offering will get you there.

  • More Space inside your home
  • A more efficient hot water cylinder
  • Less risk with damage to property with future leaks

Call us on 0800 4 Cylinders to more information, testimonials from existing installations are available.

Cold Water Expansion Valves

Very often we get clients calling us saying there is a pipe that is constantly dripping outside their house and they want it fixed so that it stops. The first thing that we do Is try to educate the clients on what the role of this valve is along with the rest of the valves on the hot water cylinder. So what does a Cold Water Expansion valve do??

When your cylinder is filled with cooler water at high pressure after you, let’s say have used it for a shower or filling the sink with hot water, the element comes on to heat the water back up to it maximum temperature.  The water being heated up causes the water molecules expand and increases the already high pressure in your hot water cylinder to even higher. The Cold Water Expansion has 2 roles in this situation,

  1. it’s a safety mechanism that releases excess water pressure  from your hot water cylinder as it heats up to avoid over pressurizing,
  2. it’s a energy saving device, because it is installed where the cold water comes into your cylinder, it drips out cold water instead of other valves at the top of your cylinder wasting and dripping hot water.

So this valve is made to drip while the cylinder is heating, however if yours is dripping all day and all night constantly this may indicate it is time get us in to replace the valve or investigate other issues that may be forcing the valve to drip.

How do I know my cold water expansion valve is working?

Check that the valves on-top of your cylinder are not discharging any water because if they are then the cold water expansion valve isn’t doing its job, also when you do manually turn your cold water expansion valve on, look for discoloration of the water as this indicates the valve is rusted internally or the rubber seal has perished and is no longer effective. If you are still concerned, getting a hot water cylinder service by us includes checking this valve and others thoroughly.

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Under-bench Hot water cylinder struggles for space

underbench_hot_water_cylinderTalk about limited space! When we arrived onsite we immediately knew we would be challenged with this exceptional under-bench hot water cylinder. Existing cylinder tank is 45 Liters and needs to be replaced (burst) with an equivalent size. The problem though is that the new Rheem hot water cylinder is much wider at 535mm in diameter. This is mainly due to the fact that newer hot water cylinders are now manufactured with more insulation making them “fatter”. after Disassembling and relocating all plumbing to the left hand side of the sink bench we gained further 150mm which made it possible to fit the new under bench cylinder and ensure all valves trains and wastes are installed as required by NZS 3500. What initially seemed impossible worked out to be a 4.5 hour installation with a very pleased client! Another successful job for hotwatercylinders.nz!

Old low pressure out new low pressure in

Low Pressure, Replacing like for like, some considerations…low_pressure_out_low_presure_in

This Cylinder came in last week, it was in a holiday house and the low pressure cylinder had burst leaking over the course of a few weeks and flooding a lounge. After assessing the job so many issues were ignored when the original plumber install this one causing many issues of our plumber to remedy. Things initially noticed was no cylinder seismic restraints, isolating vale on the inlet wasn’t installed and no drain at all was installed and the cylinder was in the middle of the house on a concrete slab.

No drain at all is a big no no when I comes to servicing. We ended up having to live change swap the inlet to the cylinder with a temporary drain to drain down the cylinder, making the job even more messy. Installing and fixing all these issues is FAR easier at the beginning before the original is installed rather than taking short cuts and making it harder for future Servicing. In the end we resolved all these issues and the job was a success, but a lot more difficult than it should have been so really if we all just put considerations in to our work before we start our jobs, we will all as a plumbing community be better off!