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PassivHaus

Are free MVHR designs any good?

14 February 2022Patrick Leave a comment

Lately we’ve been seeing a few MVHR manufacturers offering “free” MVHR ductwork designs with their product sales. If you’re planning an MVHR system in 2022 for your build project you will have likely been offered or found a free MVHR… Continue reading →

MVHR Architecture, MVHR, MVHR Design, Passive House, PassivHaus, Passivhaus problems

So who are Passive Houses for?

15 April 2016Patrick 1 Comment
Airtightness Test Kit mounted in hallway of London retrofit 2021

Are eco-friendly passive houses for rich people? Eco warriors? Self-builders? Housing associations? Or are they only the preserve of our more logical, engineering-minded continental cousins in Germany? Passive Houses are for everyone. To build a Passive House, ie, one that runs at… Continue reading →

Health, PassivHaus Dodgy Building, Green Deal, Insulation, PassivHaus

Five most common problems with Mechanical Heat Recovery (MVHR) Units

12 March 2016Patrick 79 Comments

Modern homes are shifting towards increasing levels of airtightness in order to secure heat-saving benefits. With increasing levels of airtightness comes a need for a ventilation strategy. For Passivhaus, this means an MVHR system. Heat from the home is lost… Continue reading →

Health, MVHR Comfort, Good Home Ventilation, Health, Healthy Indoor Air, MVHR, PassivHaus

The four ways dodgy builders ruin new-build low energy homes

24 February 2016Patrick 1 Comment

Not many UK builders have embraced PassivHaus principles yet. Below are a few ways that builders in the UK can ruin low energy homes, either by ignoring or failing to understand the new wave of low energy design and build techniques… Continue reading →

PassivHaus Airtightness, Dodgy Building, Insulation, PassivHaus

PassivHaus design specifications explained

9 February 2016Patrick Leave a comment

Building physics is a relatively new science that’s only recently started to gain ground in the UK construction industry. A lot of builders nod agreeably when you mention “PassivHaus”, but not many know what it means when it comes to… Continue reading →

PassivHaus ACH, Building Physics, MVHR, PassivHaus

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