Child Item

What to replace hot water service for apartment block?

Hi folks.

hot water service is coming to end of life (10 years) and would like to switch from older style (see pic) to the smaller instantaneous electric system. Nb. No gas in block.

plumber mentioned something about older blocks and ‘phasing’ and it not being compatible but when I asked me questions he confessed to not really

knowing.

he has quoted $2500 (3k for longer lasting 15 yr stainless steel option) for replacement including install an valves and so forth.

am wondering how I work out if technically the smaller system is an option or I’m stuck with yr olde approach? 🤔

thx

Find more posts tagged with

Tools and Materials

Repairing

Plumbing

Heating and Cooling

Lighting and Electrical

Accepted answers

All comments

EricL

Hello @toby8

Thanks for sharing your question about your hot water cylinder. Using the continuous electric hot water system is not bad. But in my experience, it has a difficult time managing when winter becomes very cold. A hot water cylinder on the other hand is quite dependable even at the height of winter. It can service at least two adults depending on the size that you purchase. Premium models that have the stainless-steel tank will usually last more than 10 years. It is an excellent investment if you are thinking of replacing your old one with a stainless unit.

I suggest getting a second opinion in regards to the electrical connection of your continuous electric HWS. I propose doing a lot of research and fact finding in regards to the unit you'll be replacing it with. If you feel that this is the way to go, just make sure that the system can be installed into your home.

Let me call on our experienced members @Dave-1 and @Nailbag for their recommendations.

If you have any other questions. please let us know.

Eric

Dave-1

Good Evening @toby8

I agree with @EricL about doing some more research. Pain in the neck I know but Im still doing research on my hot water replacement (have been looking into it for the past 3 years) I just had a quick google and there are Electric instantanious hot water heaters that dont need a seperate phase. Tends me to question when only one style has been recommended. A few more quotes or queries with your Electrical company or local council may help. Especially with any current rebates.

Just expanded my search and looked up 80L tanks and also 120L hot water tanks (yours looks about that size) and the prices came in under $1,000. Its a ballance with your usage instantaneous style compared to heat the tank. Switching like for like shouldnt be a huge cost.

Dave

Nailbag

Hi @toby8

I would research "heat-pump water heater" systems. These utilise heat from the surrounding air to heat water in a storage tank. They use much less electricity than a conventional electric storage water heater, and are the most efficient hot water systems on the market. Most states offer rebates for converting to more energy efficient systems that include removing your old system.

Nailbag

Child Item