Posts

Could You Make One Room in Your House 5°C Cooler Without Air Conditioning?

Image
  Could You Make One Room in Your House 5°C Cooler Without Air Conditioning? Before buying an air conditioner, try treating your house like a science experiment. During a hot spell, it is very easy to assume that an uncomfortably warm room simply needs mechanical cooling. Buy an air conditioner. Plug it in. Problem solved. Except that air conditioning uses electricity, costs money to buy, adds another appliance to maintain and, in some houses, may simply be compensating for a much more basic problem: we are allowing too much heat into the room in the first place. What if, instead, we chose one room in the house and experimented with it? Could we make it 1°C cooler? Could we manage 3°C? And could a particularly badly overheating room actually be kept 5°C cooler at its hottest point simply by changing how we manage sunlight, windows, ventilation and internal sources of heat? The answer will vary enormously between houses. A north-facing downstairs room is very different fr...

Stop Cooling an Empty House: The Next Smart-Home Saving

Image
  Stop Cooling an Empty House: The Next Smart-Home Saving We’ve learnt to control our heating. Now perhaps our homes need to learn how to manage summer. For years, the smart-home conversation in Britain has largely been about winter. Smart thermostats turn the heating down when we go out. Individual radiator controls stop us heating unused rooms. Timers prevent boilers and heat pumps running unnecessarily. Some systems even learn when we normally arrive home and make sure the house is comfortable just before we walk through the door. It makes perfect sense. So why, as our summers become hotter, do we often approach cooling in a completely different way? A room becomes unbearably warm, so we switch on a fan. If that does not work, perhaps we buy a portable air-conditioning unit. Then we leave it running while we cook dinner downstairs, go shopping, sit in the garden or even leave the house entirely. We would think twice about leaving the central heating blasting away in an empty hou...