Air conditioner energy class: what the letters mean
How to read the European label, and why it has two separate ratings for cooling and heating
#glossary
7 articles
What is BTU on an air conditioner
The unit that measures cooling power, and how to use it to pick the right size
What is R32 gas in air conditioners
Today's most common refrigerant, and why it replaced R410A
What is SEER and SCOP on an air conditioner
The indexes that measure seasonal energy efficiency, in cooling and heating
What is an air conditioner without an outdoor unit
The monobloc that packs everything into one indoor unit, for those who can't install a traditional system
Difference between Inverter and on/off air conditioners
Why nearly every model sold today is Inverter, and what actually changes
Difference between single-split and dual/multi-split air conditioners
One outdoor unit for one room, or for two, three, four: when each setup makes sense