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Where's that heat coming from?

  • Writer: Paul Cummins
    Paul Cummins
  • Jun 26, 2015
  • 1 min read

Updated: Sep 23, 2019


Buying an apartment with gas heat but can't find the furnace? If you have a gas water heater it may be heating your bath water and the air in your new apartment.


Home Heated by Water Heater.gif

A pump simply draws hot water through a heat exchanger when the thermostat tells it to, then returns it to the water heater. Since this is a relatively slow way to add heat to your living space it's good to turn up the thermostat on your water heater in the winter (but check it at a tap to make sure it's not scalding), keep the room thermostat up during the day while you're away, and make sure your filters are clean and cheap (not the pollen-catching kind).

1 commentaire


alanadavid307
04 janv. 2021

I'm going to buy a 18l Natural Gas Hot Water Heater from a Vevor online store. They are providing vevor coupons also. But I want to know how long the hot water heater will stay hot without electricity and does turning hot water heater off save money?

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