20 models rated around 14,000 BTU – suitable for rooms of 30 to 40 m² with standard height and insulation.
Models
in stock and on request
20
Air-conditioner capacity is measured in BTU/h – 14,000 BTU corresponds to about 4.1 kW of cooling. This class suits rooms of 30 to 40 m² with ceilings up to 2.7 m and normal insulation. For south-facing rooms, large windows or attics take the next size up.
Below are all catalog models in this class, sorted by availability. For exact sizing use the calculator – it accounts for orientation, windows and the number of people in the room.
−31%Nippon
−20%Daikin
AUX
Mitsubishi Heavy
Mitsubishi Heavy
Mitsubishi
Mitsubishi
Daikin
Daikin
Daikin
Daikin
Daikin
Nippon
Daikin
Daikin
Daikin
Toshiba
HITACHI
Daikin
GENERAL
A room of 30 to 40 m² with a ceiling up to 2.7 m and standard insulation. Higher ceilings or many windows reduce the area.
It will run constantly at full power, use more electricity and still miss the set temperature on the hottest days. Better to pick the next step up.
An inverter unit turns its power down, so a small margin does no harm. A far too powerful unit costs more and in cooling mode cycles off more often, which worsens dehumidification.
Buying guide
How to choose an air conditioner: 7 things that decide it
Floor area, BTU, inverter, energy class, noise, Wi-Fi and installation – a practical guide to picking the right air conditioner for a home or office.
Sizing
Air conditioner for 20, 30 or 40 m²: which capacity is right
9000 BTU for 20 m², 12000 BTU for 30 m², 18000 BTU for 40 m². When the rule does not apply and how to correct for exposure, glazing and ceiling height.
Running cost
How much electricity does an air conditioner use? SEER and SCOP with examples
How to estimate the running cost of an air conditioner in summer and winter from SEER and SCOP, with worked examples for 9000 and 12000 BTU and an A+ vs A+++ comparison.
The calculator sizes your room in under a minute, and our specialists confirm the choice by phone.