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» 11.3 For in-unit storage water heaters, confirm presence of heat trap by visual inspection or on AHRI cert.
11.3 For in-unit storage water heaters, confirm presence of heat trap by visual inspection or on AHRI cert.
See the following guides for relevant information.
Distributed Heat Pump Water Heaters for Multifamily Buildings
Heat Pump Water Heaters for Single-Family Homes
Ground-Source Heat Pumps