The case for #MVHR…we retrofitted our home to the #passivhaus #EnerPhit standard, family and friends thought the MVHR was intriguing but couldn’t really understand the point “can’t you just open windows Sarah?” Here is why our MVHR is amazing for health & wellbeing in 3 graphs…
#MVHR installed 3rd June 2021 - where the grey line is. Before the 3rd of June we were diligently opening windows and putting up with draughts, carefully tracking levels on our monitoring system but still could avoid high daily averages well over 1000ppm 
And the relative humidity 😳 relative humidity was up around 75% regularly & this is just in the living room, even worse data was recorded in the bedrooms over night. Last winter humidity actually got a bit low in the living room so we had to invest in some extra house plants 🪴
And maybe most important today the internal temperature was raised and at the same time our bills reduced. The @Zehnder_UK unit recovers 90% of the heat from the air before expelling it to the outside, giving this as free heat to the fresh incoming air 🤩
Want to know more passivhaustrust.org.uk/guidance_detai… @PassivhausTrust
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