Why MVHR

Why choose MVHR  (heat recovery ventilation) when window trickle vents and noisy kitchen and bathroom extractor fans will keep the building inspector happy?

  • Indoor air quality – keeping indoor air contaminants low, maintaining relative humidity in the healthy zone (in the range 50%, ±15%), filtering out external pollution – doing all this continuously and reliably in the background;
  • Energy saving – using MVHR allows you to double-down on building air-tightness, which saves energy, hugely reduces drafts, makes the house quieter and helps the durability of the building fabric;
  • Comfort during hot weather – by helping keep relative humidity down, your home will feel more comfortable in summer
  • Open windows! You can still open windows as you do in any normally ventilated home.
  • Clothes and towels dry easily all year round, no noisy bathroom or kitchen fans, bathroom mirrors clear quickly

Read more about ventilation here

Indoor Air Quality and Ventilation (PDF, 465 kB)

Natural Ventilation (PDF, 1.62 MB)

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