I live in boston so my groundwater temperature is around 47 f.
Tankless water heater closet size.
Therefore to size a demand water heater you need to determine the flow rate and the temperature rise you ll need for its application whole house or a remote application such as just a bathroom in your home.
For example you might not be able to run more than one shower at a time without someone getting an arctic blast of cold water.
As an example i will show you what came out for me.
Size matters when it comes to your tankless water heater.
Determine the mounting space tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted.
Yes a gas water heater can be installed in a closet as long as the closet is not used for storage.
And your temperature rise which is determined by your incoming water temperature subtracted from your hot water setting.
Traditional water heaters can take up to 16 square feet of valuable floor space.
Electric units have measurements in the 10 inch high to 7 inch.
Tankless water heaters are rated by the maximum temperature rise possible at a given flow rate.
What size tankless water heater depends on your gpm at peak hot water demand.
The international residential code irc specifically bans a storage closet as a location for a gas water heater.