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CMLP highly recommends submission of the Optional Pre-Approval Form to confirm whole home rebate eligibility before an installation contract is signed. See the "Eligibility Criteria for All Heat Pump Projects" section above for links to pre-approval forms for air-source heat pump projects and for ground-source heat pumps projects.
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 an 8°F outdoor design temperature, per ASHRAE 2017 Design Conditions, throughout 100% of the conditioned space. Each condenser must be able to heat its zone down to 8°F. Conditioned space is defined as the space designated as living area in the Assessor’s database.).
- Homes may maintain emergency heating capacity from a wood or pellet stove, an existing fossil fuel system or an electrical resistance heating strip installed in the heat pump. Homes may use supplemental heat from electric baseboard (resistance) units, electric thermal storage (ETS) or existing heat pumps, as long as the new heat pump is sized to meet 90% - 120% of the home's heat load.
- CMLP reserves the right to issue rebates for heat pumps sized to meet more than 120% of the total heating load, at its discretion.
- 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.
- The installer must submit a Manual J heat load calculation with the online post-installation quality assurance (QA) form to CMLP for heat pump projects. Click for the air-source heat pump QA form or for the ground-source heat pump QA form.
- 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 a new heat pump system to replace existing heat pumps is eligible for a whole home heat 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.
Whole Home Rebate Eligibility for Multi-Unit Properties
Multi-unit properties include:
The way in which CMLP applies its whole home heat pump rebate policy to different types of multi-unit properties is based upon:
Click here to see how CMLP’s whole home heat pump rebate policies apply to each of the multi-unit property types listed above.