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Heat Pump Water Heater

NYTRM v13

Calculate annual energy and cost savings from switching to a heat pump water heater in New York State.

Household & Location
Used to determine water main temperature and HVAC factors
Affects default persons per household if not specified
Number of occupants. Default varies by building type.
Average daily hot water usage per person. Default: 17.2
Existing Water Heater
Fuel type of the water heater being replaced
Storage capacity of the existing water heater
From the existing water heater. Determines draw pattern.
New Heat Pump Water Heater
Where the new HPWH will be installed. Affects efficiency and HVAC interaction.
UEF rating for the new heat pump water heater. ENERGY STAR requires ≥3.30.
Does the HPWH have backup electric resistance heating? Applies 0.91 derate if yes.
Does the system have drain water heat recovery or solar preheat?

Based on NYSERDA TRM v13 methodology. Pages 98-114. View source

Frequently Asked Questions

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