Skip to content
B-Cool
Your code

Comfort at home

Heat, humidity, sleep, and the rooms that get too warm.

8 guides · about 29 minutes of reading

  1. 01Humidity and comfortHumidity changes how warm a room feels at the same temperature. Most people are comfortable with relative humidity of roughly 40–60%; above that, warm rooms feel close and sticky, and air conditioning helps by taking moisture out as it cools.4 min read
  2. 02Sleeping in hot weatherBedrooms stay warm at night because the building gives back the heat it soaked up during the day. Keeping sun out by day, ventilating once it's cooler outside, and quiet cooling or a fan all make a warm night more comfortable.4 min read
  3. 03Why some rooms overheatA room overheats when heat gets in or builds up faster than it can escape. The usual causes are sunshine through large or west-facing windows, a roof directly above, heat from people and equipment, and too little ventilation.3 min read
  4. 04Loft rooms and top floorsLoft rooms and top floors run hotter than the rest of the house because the roof heats up in the sun, warm air rises, and roof windows catch sunshine for much of the day. Shading, ventilation, insulation and well-planned cooling help.4 min read
  5. 05Keeping a home office comfortableA home office warms up through the day from computers, screens and you, often in a small room with the door shut. Shading, ventilation and cutting equipment heat help, and quiet air conditioning suits rooms that still get too warm.3 min read
  6. 06Keeping cool without air conditioningKeep the sun off your windows during the day, open up when the air outside is cooler than inside, usually from late evening to early morning, and cut the heat produced indoors. Fans make you feel cooler, though they don't cool the room.4 min read
  7. 07Does air conditioning dry the air?Yes, in cooling and dry modes it takes moisture out, which is part of why a cooled room feels comfortable, but it rarely leaves a UK home uncomfortably dry. Heating mode removes no moisture, although warming air lowers its relative humidity.3 min read
  8. 08Common air conditioning mythsMany beliefs about air conditioning don't match how modern systems work. Most wall-mounted systems heat as well as cool, don't bring in outdoor air, don't need regular regassing, and won't cool a room much faster if you set a very low temperature.4 min read