The 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.
It’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.
Great 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!
An 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.
Another 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.
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 filling up with cold water at a high pressure after; let’s say you have had a hot shower, the element comes on to heat the water back up to its pre-set maximum temperature of around 60 degrees Celsius.
The water being heated causes molecules to expand and increase pressure exponentially in an already high pressure hot water system exceeding normal operating pressure.
The Cold Water Expansion has 2 roles in this situation,
- it’s a safety mechanism that releases excess pressure from your hot water cylinder as it heats up to avoid over pressurizing protecting the system as a primary means of release. The secondary means of release is the TPR valve which activates when the CWEV does no longer copes.
- Whilst this valve acts as a pressure relieve valve, Its primary role is power energy saving. It is installed on the cold line, typically close to where the cold water enters the cylinder. The pressure relief is set below the primary relief (in KPA) allowing it to drip cold water instead of hot water when expansion occurs before the other valves at the top of your cylinder (TPR valve). By doing so, it reduces hot water waste and results in a lower energy bill.
On hot days with low hot water consumption, the cold water expansion valve can run up to 10 liters per hour! Remember, that by doing so you are saving on power. The alternative would be, less water wastage at a higher pressure via the TPR valve but a higher power bill. The logic is, water is cheaper than power.
Whilst the valve is designed to drip while the cylinder is heating, if yours is dripping excessively and you believe this is not normal, it may indicate it’s 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 valve on-top of your cylinder (TPR) is not discharging any water because if it is then the cold water expansion valve isn’t doing its job. Also, if you manually turn on the cold water expansion valve to discharge water (turn blue knob) 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.
Why not book in a hot water cylinder service to do a full system check? Call us today.
Talk 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!
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!
WHAT A TIGHT FIT… In and out in 3 hours! The call came in at 9:30AM with Mrs James advising that her old low pressure Rheem which is over 30 years old has burst! Considered about timing because her holiday was already booked for the following day hot water cylinders NZ made it happen! To get this job done we have to not only “squeeze” the actual job into the day but also had to SQUEEZE the HWC into the cupboard! After we detached the panel, we managed to get the Gib out of the way and rearrange the timber to make the new mains pressure tank fit. Luckily it was easy enough to run a drain and the tempering valve rated to be screwed straight into the tank making a what seemed to be a hard installation very easy! In just under 3 hours this installation was done for our stainless special rate! Stainless Steel mains pressure solar ready with 10 years warranty, now Mrs James can go on holiday without having to worry about her hot water when she gets back! If you have a situation where you believe a new tank might not fit, let us know and we will do an obligation free site visit to advise on what solution works best for you! Call us 0800 4 Cylinders
This 500 litre hot water cylinder arrived on site this morning with a massive dent, thanks a lot Mr delivery company! Thankfully the cylinder is stainless steel (not enamel). Being a custom made hot water cylinder makes the decision very difficult to send it back and wait on a new one. Additionally we have staff onsite not being able to commence with the work until the matter is resolved. A quick phone call to the cylinder delivery company turned out to work wonders enabling us to give the costumer a decent discount on the hot water cylinder. Of course the full warranty will also continue to apply. Just a quick pressure test to confirm all is ok and off we go! Sometimes things don’t always go as planned but the main thing for us here at hotwatercylinders.nz is to have a good and “can do” attitude in finding a way to keep everyone involved happy. After all, the dent is really just “cosmetic” and after we faced it towards the wall and completed the installation you couldn’t even notice it was there. Another satisfying hot water cylinder happy ending!