Answer first
Air-to-air heat pumps commonly provide heating and cooling through indoor fan units. An air-to-water unit may support chilled water, but ordinary radiators provide little useful cooling and can create condensation if surfaces fall below the room dew point.
If cooling matters, state it before the survey. The designer can consider fan-coil units, suitable underfloor systems, humidity and dew-point control, condensate drains, zoning, planning and the effect on funding eligibility.
Cooling capability must exist in the selected equipment and controls
View sourceChilled surfaces require condensation control
View sourceFan coils or air units are designed to move useful cooling into rooms
View sourceTell FLO if summer cooling is part of the brief
Tell FLO about the property, current heating and the point you need resolved. A £0 home survey can turn the general answer into a room-by-room design and written quote.
Choose the heat-pump type for the job
Air-to-air systems deliver conditioned air and are naturally suited to reversible heating and cooling. Air-to-water systems deliver water to radiators, floors or fan coils and need compatible modes throughout.
A product specification showing “cooling” does not prove the installed home system can use it. Ask for a cooling design, not a menu icon.
Radiators are poor cooling emitters
Natural-convection radiators have limited output when only slightly cooler than the room. Lowering water further risks surface condensation, drips and damage.
Fan coils move air across a controlled coil and provide a drain for condensate. Underfloor cooling can be possible in some designs but needs careful dew-point and floor-finish limits.
Reduce overheating demand first
Shading, glazing control, ventilation strategy and internal gains may solve much of the summer problem with less energy and complexity. Bedrooms and highly glazed rooms often need different treatment.
A cooling survey should identify when and where overheating occurs rather than size from total floor area.
Check permissions, funding and operation
Domestic permitted-development wording in Scotland relates to equipment used for domestic heating or hot water. A cooling proposal may therefore need specific planning advice rather than assuming the heating route applies.
Cooling increases summer electricity use and changes controls and maintenance. Put the heating-only and heating-plus-cooling scopes side by side before deciding.
What to read next
Related answers and services
Questions people also ask
Can my existing radiators cool rooms?+
They are generally ineffective for meaningful cooling and may condense; purpose-designed fan coils or air units are more appropriate.
Does every air-source heat pump reverse?+
No. Check the exact model, controller and installed hydraulic or air-distribution design.
Will cooling affect funding?+
It can affect technology eligibility or eligible cost; check the current scheme and planning position before committing.
Evidence used for this answer
Figures are explained in context and links go to the independent source. Prices, tariffs, scheme rules and standards can change, so check the source again before making a financial or technical decision.
- MCS domestic heat-pump guideConsumer guidance covering design, installation, controls, handover and maintenance.
- Carbon Trust: heat pumps guide for businessesBusiness-focused guidance on heat-pump applications, system selection, financial assessment and efficient operation.
- Scottish Government: householder permitted development rightsOfficial Scottish limits and conditions for domestic air-source heat pumps, including siting, designated places and MCS 020.
- Home Energy Scotland Grant and Loan: terms and eligible costsCurrent Scottish grant and loan limits, eligible heat-pump costs, application conditions and rural uplift rules.