I would have thought good ventilation would bring much colder air in from the outside thereby mitigating the benefits of good insulation. How do modern houses deal with this issue or is good ventilation much less important and I expect? (I’m in the UK so we don’t have blown air heating/cooling as standard here)
In: Engineering
Ventilation is mainly recirculation. There is enough foot traffic in/out to refresh the air. No need to actively move outside air in and inside air out (larger commercial/residential buildings will do this depending on layout).
Insulation is about stopping heat moving through the walls/ceilings/floors/windows/doors. Keeping your heated/cooled air from physically leaving the living spaces is very important to that process. If you are actively venting your heated/cooled air outside you have to spend a lot of power to heat/cool the new air coming in.
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