Build Tight – Ventilate Right is the mantra of the Energy Savings Trust and the Passive House Institute. Seal the building like a Thermos flask so heat can’t escape, but make it habitable first. MVHR not only saves you wasting money, it makes your building very healthy and comfortable to live in. But most importantly, it allows you to build tight, and that makes your property low energy before you switch to electric heating.
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