Hi, anyone has any experience with instantaneous (tankless) electric hot water that you can install in a small apartment bathroom? I'm in NSW if that helps.
Currently I have a small under the sink type hot water tank (20litre) which is only good for practically hand washing and kitchen use.
Would like a hot water unit in the bathroom and preferably no tank.
Looking at
https://www.stiebel-eltron.com.au/3-phase-electric-instant-h…
Or
https://www.gleamoushotwater.com.au/all-products
Thanks
The first brand is good. Check you have three phase power, they also sell single phase.
I would be shocked if any apartment has 3 phase….. The single phase units are either 30 or 40 amps, so the OP will have to check to make sure that will be ok for their supply line etc, I assume the OP has elec cooking, so IHW + oven + cooktop = overloaded mains in a older fitout.
Also need to check the flowrate of the OP shower, the 40 amp units can only uplift the water 15c @ 9l/min. OP might need a lower than normal flow shower head, 6l/min it can lift the water temp by 22c.
Yes.. Tankless.. Thanks for pointing out the typo.
JimmyF gave good comments about power.
Doubt it has 3 phase power. 1960s apartment so single phase is more likely be the case.
Yes, electric stove top. The power issue will excludes stiebel and possibly excludes any possibility of instantaneous electric hot water. How about the second link option. Has anyone seen one of those installed here? I have seen them used mainly in Asia.
As for shower flow rate, I guess any water savings shower heads will lower this down to 7.5l/min to achieve higher temp required.
They got used a lot in south east asia because ambient temperatures is always above 20 and water temperatures around 24 most of the time so the amount of power required to raise temperature by 10 degrees is minimal. You'll need twice the amount of power in summer and 3 times in winter in Australia hence the need for 3 phase (also the water flow rate is also higher in Australia too)
Nooooooo, your electricity bill will SCREAM.
It's very good though, previous unit used Stiebel Eltron, you can adjust the temperature of the hot water so I can just max any knob and not worry about it being too hot.
Assuming you have to use 3 phase power unit for shower?
Yes, the heater unit under the kitchen sink provides hot water for the kitchen, laundry, and bathroom.
It uses a gazillion amount of electricity but definitely saves a lot of space. The size is very compact. You can get an electrician to put the 3 phase for you if $ is not an issue.
If it’s an investment property, the onus will be on the tenant.
It is for an investment property which has limited space and no gas. Alternatively I guess I can get a 80l electric hot water tank and place it in the toilet and remove the 20l tank under the kitchen sink. Is there still power issue doing it this way?
Could a gas bottle be put outside the building and run the pipes up to the apartment? A lot of houses have external gas tanks which get physically delivered when empty.
Might need approval from body corporate though.
Or is a gas bottle or hot water system allowed on the balcony or in the garage?
Actually, I would think a small electric HWS could be mounted on the external wall of the apartment, similar to those split-system air con units. I'm no expert though.
You should also be able to mount above the washing machine where the clothes dryer goes? Here is an example:
https://www.northernbeacheshotwater.com.au/wp-content/upload…
That is a small tank.. How many litres is that?
80 litres. Comes from this plumber's website…
https://www.northernbeacheshotwater.com.au/rheem-hot-water-i…
Today Northern Beaches Hot Water completed a tidy, but tricky, hot water install in Cremorne. The 80L Rheem hot water heater needed to be hung on the wall in a cupboard and all the pipe work adapted to suit the installation of a new pressure limiting valve as per manufacturers Installation Instructions and a tempering valve as per the Australian Plumbing Standards.
And just as another thought, if the apartment is on the top floor and there is a pitched roof, there should be room in the roof cavity for a small system? No idea if that's within building codes etc but don't see why it couldn't be done. Might need ceiling plaster to come down (or roofing materials to be peeled back) to get it up there though. But maybe there's some small systems that would fit in the manhole. Looks like the Rheem system is 945 x 515 x 480.
Think you mean tankless.
Do you have 3 phase power?
Are you wanting to shower with this unit?