Air conditioning for landlords and rental homes in Dorchester
Top-floor flats and HMO rooms in Dorchester can get uncomfortably hot in summer, which tenants notice first. Damp South West winters make the dehumidifying side of a heat pump almost as useful as its cooling.
If you let a holiday home or annexe near Dorchester, one system can warm it before guests arrive and cool it in summer. Dorchester is about 24 miles from Bournemouth and falls within our Dorset coverage. Coverage includes DT1.
Prices in Dorchester
Air conditioning for landlords and rental homes in Dorchester typically comes in at £1,150–£5,950 per property, one room to the whole let including VAT, based on South West England rates. That is broadly in line with national guide prices. What moves a quote in Dorchester up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. On our South West England figures, the Two rooms option (two rooms on separate systems or a twin multi-split) is about £2,350–£3,650.
Single room
One wall unit for a bedroom or studio.
Two rooms
Two rooms on separate systems or a twin multi-split.
Whole let
Three or four rooms, with a service plan.
Guide prices show VAT at 20%. HMRC treats most fixed air conditioners and air-to-air heat pumps installed in homes as energy-saving materials, zero-rated until 31 March 2027 when we supply and fit them. If your installation qualifies, your quote shows 0% VAT and a lower price. Servicing, repairs, cleaning and controls are charged at 20%.
Planning and permissions
For most houses in Dorchester, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
On a survey in Dorchester the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows. At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote.
What is included
Every job in Dorchester includes:
- Simple remotes and temperature limits
- Separate or multi-split options
- Handover notes for tenants
- Access arranged with you and your tenants
- Pressure test, vacuum and commissioning
Nearby
If you are just outside Dorchester, we also work in Weymouth (7 miles), Wareham (14 miles) and Bridport (14 miles). See all services in Dorchester or air conditioning for landlords and rental homes across Dorset.

