New answers tagged

1 vote

Does missing expansion tank and check valve explain non-functioning circulating pumps?

If you don't have a check valve near the pump, then there should be a thermostatic valve somewhere else far away. They are usually installed under a bathroom sink. That valve might be disabled or ...
user avatar
  • 18.8k
1 vote

Condensate Pump For Water Heater?

You need to fix the problem that is causing your pressure/temperature relief valve to actuate. They are explicitly forbidden to be connected directly to a drain, because you should be aware that they ...
user avatar
  • 133k
1 vote
Accepted

What kind of water pump should I use to supply a tankless water heater from a non-pressurized water source?

I'd use something like that: It's a pump with an output pressure of around 4 bar (60 PSI), a pressure tank, and a pressure switch. When pressure in the tank drops, it starts. When pressure is ...
user avatar
  • 5,780
-1 votes

What kind of water pump should I use to supply a tankless water heater from a non-pressurized water source?

I think most answers and comments are off base here. A tankless WH is normally supplied by pressurized water (municipal or well) at somewhere between 30-60 PSI. The actual flow is controlled by the ...
user avatar
0 votes

What kind of water pump should I use to supply a tankless water heater from a non-pressurized water source?

Most likely, the heater has no ability whatsoever to regulate flow. The way these heaters work, they are injecting heat into the water at whatever rate they're capable of. If you flow water through ...
user avatar
0 votes

What kind of water pump should I use to supply a tankless water heater from a non-pressurized water source?

Using the information from the unit similar to the one you have, your pump shouldn't exceed 1.4 gallons per minute or you won't get the hot water you're setting the unit to provide. There are pressure ...
user avatar
  • 53.3k
2 votes

What kind of water pump should I use to supply a tankless water heater from a non-pressurized water source?

If you exceed the GPM rating of the heater, the water will not get the specified temperature rise that you are probably counting on. In the listing your provided it says: A 2GPM portable tankless ...
user avatar
  • 20.3k
0 votes

Do tankless under the kitchen sink 110v water heaters any good for instant warm water?

If you can turn down the temperature (most of these are set far too hot, just below boiling, for hand-washing), and are satisfied with perhaps a liter of hot water, it should work. It might take ...
user avatar
3 votes

Do tankless under the kitchen sink 110v water heaters any good for instant warm water?

No, they're really not. True tankless on 1500W (max plug-in power) is actually a hard problem, because physics is against you. You cannot deliver enough BTUs to do the job. That's why they're not ...
user avatar
4 votes

How to retrofit this circuit to be able to run a bare ground splice to another appliance?

More like "how do I bring this up to code?" Random $1 4x4 steel junction box. (should be $1, Home Depot is overpriced). Cable clamp appropriate for 10/2 wire. x2. "10/3" wire whip....
user avatar
0 votes

Where should I install a Kolerflo 120W water pressure booster pump?

Welcome! I would install it before the tankless water heater for several reasons. Putting it on the outlet would tend to lower the pressure in the tank. Also if it is on the output it will need to ...
user avatar
  • 3,141
1 vote

Draining sediment out of my hot water heater

The answer to the question as posted by the OP in a comment: Turns out, repeated draining over 18 hours left the water coming out almost clear, and the hot water at the tap odorless. Postponing ...

Top 50 recent answers are included