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Heat Pump Domestic Hot Water Costing

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James Kitchin
Director of Performance & Provenance
MASS Design Group
LEEDuser Basic Member
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Hello,

This is not my area of expertise but our contactor has suggested central heat pump hot water (CHPHW) is $1m more expensive than gas fired domestic hot water for a 150 unit multi-family residential building in Massachusetts. The Building Decarbonization Practice Guide is extremely helpful but, from their comments, it is all coming down to risk costing because it is an untested technology.

Does anyone know of any cold climate CHPHW examples, costing, contractors, or manufacturers that could help me question some of these cost assumptions?

All other information or strategies would be appreciated.

Thank you!

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Casey Ross
Director of Sustainability
Lorax Partnerships, LLC
LEEDuser Basic Member
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Mon, 08/22/2022 - 20:00

Mitsubishi has a line (link below) that uses CO2 as the refrigerant to be able to handle colder climates. I've received some preliminary selections from them for a project, but have not seen them all the way through design let alone actually working in the real world. First blush estimates have these coming in much more expensive than traditional systems. https://metahvac.com/

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