Current grant values, the installer-led process and questions to ask before relying on funding. This guide explains the decision points without promising that one answer fits every property.

Current support

Most eligible air-to-water and ground-source heat-pump projects receive £7,500. From 21 July 2026 to 31 March 2027, certain eligible off-gas properties replacing qualifying fuel systems can receive £9,000.

For current support, ask the designer to show the property evidence, assumptions and practical consequence rather than relying on a generic rule. Record the current fuel, annual consumption if available, rooms that struggle, desired temperatures, hot-water pattern and any planned renovation. A product figure measured under stated conditions is not a household bill forecast, so comparisons should identify the design temperature, intended water temperatures, controls and enabling work. Check who owns the heat-loss calculation, emitter schedule, electrical or ground scope, commissioning and handover. Avoid selecting equipment from floor area alone or treating a grant as proof that the system suits the home. Keep the final design, settings, warranties and service record so future adjustments and fault finding start from evidence.

The installer leads the voucher

The owner agrees a quote with an eligible MCS installer; the installer applies and the owner confirms consent when contacted by Ofgem.

For the installer leads the voucher, ask the designer to show the property evidence, assumptions and practical consequence rather than relying on a generic rule. Record the current fuel, annual consumption if available, rooms that struggle, desired temperatures, hot-water pattern and any planned renovation. A product figure measured under stated conditions is not a household bill forecast, so comparisons should identify the design temperature, intended water temperatures, controls and enabling work. Check who owns the heat-loss calculation, emitter schedule, electrical or ground scope, commissioning and handover. Avoid selecting equipment from floor area alone or treating a grant as proof that the system suits the home. Keep the final design, settings, warranties and service record so future adjustments and fault finding start from evidence.

Eligibility comes before assumptions

Existing heat source, property type, technology, ownership and other rules matter. Treat the grant as conditional until the application route is checked.

For eligibility comes before assumptions, ask the designer to show the property evidence, assumptions and practical consequence rather than relying on a generic rule. Record the current fuel, annual consumption if available, rooms that struggle, desired temperatures, hot-water pattern and any planned renovation. A product figure measured under stated conditions is not a household bill forecast, so comparisons should identify the design temperature, intended water temperatures, controls and enabling work. Check who owns the heat-loss calculation, emitter schedule, electrical or ground scope, commissioning and handover. Avoid selecting equipment from floor area alone or treating a grant as proof that the system suits the home. Keep the final design, settings, warranties and service record so future adjustments and fault finding start from evidence.

The practical next step

Use this information to ask better questions, then base the final decision on room-by-room heat loss, emitter output, site constraints and a written design. Renewable Heating Surrey can help turn the general principle into a property-specific assessment.