Conservatory Air Conditioning
A conservatory acts like a greenhouse: glass and a polycarbonate roof trap heat, so on a sunny day the temperature can hit 45°C even when the house is comfortable. Conservatory cooling needs real capacity — usually 12,000–24,000 BTU depending on glazing area and orientation.
A split system is the durable answer (the outdoor unit sits on the exterior wall or roof), while a high-BTU portable is the fast, no-install fix for a sunroom you only use in summer.
What to look for
- 12,000–24,000 BTU to counter solar gain through glass
- Split systems handle all-day cooling without recharging a hose
- Reverse-cycle models also warm a cold conservatory in winter
- Smart control lets you cool the room before you sit down
Best units for conservatory air conditioning
Sealey Industrial Spot Cooler Air Conditioner, Dehumidifier & Air Cooler 12,000Btu/hr SAC12001
Belaco 12000 BTU Smart Portable Air Conditioner
Samsung 12000 BTU Smart A++ Wall Mounted Split Air Conditioner with Heat Pump
TCL 18000 BTU Smart A++ Wall Mounted Split Air Conditioner with Heat Pump
TCL 24000 BTU Smart A++ Wall Mounted Split Air Conditioner with Heat Pump
Toshiba RAS24 24000 BTU A++ Wall Mounted Split Air Conditioner with Heat Pump
Toshiba RAS16 16000 BTU A++ Wall Mounted Split Air Conditioner with Heat Pump
LG DualCool EZ24 Deluxe A++ 24000 BTU Smart Wall Mounted Split Air Conditioner with Heat Pump & Voice Control
electriQ iQool 24000 BTU WiFi Smart A++ Wall Mounted Split Air Conditioner with Heat Pump - Black
Midea Comfee 12000 BTU Smart A++ Wall Mounted Split Air Conditioner with Heat Pump
Midea Comfee 18000 BTU Smart A++ Wall Mounted Split Air Conditioner with Heat Pump
LG DualCool Pro A++ 18000 BTU Smart Wall Mounted Split Air Conditioner with Heat Pump
Conservatory Air Conditioning — frequently asked
Why does my conservatory get so hot?
Glass traps solar radiation — the "greenhouse effect". South- or west-facing conservatories with polycarbonate roofs can exceed 45°C in summer. High-capacity air conditioning removes that trapped heat continuously.
What size air conditioner for a conservatory?
Typically 12,000–24,000 BTU depending on floor area, glazing and orientation. Because of solar gain, conservatories need more BTU per m² than an insulated room of the same size. Use our BTU calculator with the "conservatory" factor.
Can one unit cool and heat a conservatory year-round?
A reverse-cycle (heat-pump) split system can. It cools in summer and heats efficiently in winter for a fraction of the running cost of an electric radiant heater.