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If no hot water has been running, I turn on the faucet and have to wait several minutes for hot water. The heater comes on immediately, I've observed that, but the water comes out tepid, then ice cold, before finally getting hot. Once it's hot it stays hot indefinitely.

2007-12-30 15:20:15 · 6 answers · asked by jumpinggrendel 2 in Home & Garden Maintenance & Repairs

I understand that the hot must push out standing water from the pipes - but that doesn't explain the tepid->ice cold->hot sequence, and also the amount of water that comes out of the faucet before it gets hot FAR exceeds the amount of water that could possibly be in the pipes.

2007-12-31 04:37:39 · update #1

6 answers

This is mainly to do with the distance of the boiler from the faucet but bear in mind the flow is restricted so the time is longer

2007-12-30 16:14:19 · answer #1 · answered by Anonymous · 1 0

I've installed over 100 of them in the last two years and have great luck with them. This assumes it is gas. The electric ones suck! Also sounds like you're water heater is OLD because the load you spoke of isnt much of anything. Sounds like you have a problem with the heater or your piping is not insulated. Another possibility might be (if it is electric) that it is a two element model and one of the elements is dead. I would NOT recommend an electric tankless. They are not worth it. NOt enough flow rate. Gas Yes! I've used the Rinnai and the Takagi.

2016-05-28 04:20:33 · answer #2 · answered by ? 3 · 0 0

Check the thermostat setting for the lower range. Perhaps it needs resetting to a higher temperature so that the heater will come on to keep the water warm to the lower setting and not run cold.

2007-12-30 15:55:56 · answer #3 · answered by googie 7 · 0 1

Tankless water heaters must push out the standing water in the lines before the new hot water reaches the sink. The salesperson or installer should have told you that.
There are also adjustments that can be made on the heaters.
I trust your house was sized properly for the numbe of occupants and number of sinks, showers, etc.

2007-12-31 02:04:08 · answer #4 · answered by Anonymous · 0 0

the boiler is not maintaining a high enough temp. you need to set the tankless temp higher so when you need hot water it doesn`t have to heat it up so much.

2007-12-30 16:32:32 · answer #5 · answered by brokeorrich1 2 · 0 1

distance. the further its got to travel the more it absorbs the ambient temperature of the pipes.

2007-12-30 16:38:22 · answer #6 · answered by Anonymous · 0 0

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