In addition to the requirements for all heat pump projects, the following are requirements for CMLP's whole home heat pump rebate:
- Heat pumps must be new and sized to be capable of being the sole source of heating in the home (i.e. sized to meet 90 - 120% of the total heating load at the outdoor design temperature, per ACCA Manual J Design Conditions, throughout 100% of the conditioned space. Conditioned space is defined as the space designated as living area in the Assessor’s database.). Homes may maintain back up heat from a wood or pellet stove or supplemental heat from existing electric resistance heating, ETS or heat pumps.
- Project must either include the removal or disconnection of the pre-existing heating system, or the homeowner must not use the pre-existing heating system unless there is an emergency or unless the pre-existing heating system is the source of hot water for domestic uses. An emergency is defined as heat pump maintenance down-time or if the heat pump is not able to heat the home during an extreme weather event.
- A customer and their installer must sign the whole home heat pump verification form and submit it with the heat pump rebate application.
- Because the heat pump system for which the rebate is being sought must be sized to be capable of being the sole source of heat in the home:
- a customer installing more heat pumps to supplement existing heat pumps is eligible for a partial home heat pump rebate, not a whole home heat pump rebate, if the new heat pumps are sized to meet less than 90% of the heating load.
- a heat pump sized for whole home AC but inadequate for whole home heating is eligible for a partial home heat pump rebate but not for a whole home heat pump rebate.
- A customer installing new a new heat pump system to replace existing heat pumps is eligible for a whole home hat pump rebate if the new heat pump system is sized to be capable of being the sole source of heating in the home, as defined above.
- A heat pump installed in an outbuilding on a customer’s property is not eligible for a whole home heat pump rebate, even if the heat pump is the sole source of heating in the outbuilding. An outbuilding is shown in the Outbuilding section of a property record in the Town of Concord’s online assessment database. Outbuildings are eligible for a rebate of $1,250/ton of cooling capacity up to $2,500 per outbuilding.