Forums
Sustainable Sidetra...
Insulation
DIY blower door tes...
 
Notifications
Clear all

DIY blower door testing

 
Insulation
Last Post by robl 3 years ago
1 Posts
1 Users
3 Reactions
3,256 Views
RSS
 robl
(@robl)
Honorable Member Member
Joined: 3 years ago
Posts: 203
Topic starter 05/09/2022 2:07 pm  

Blower door testing (google it!) is a great way to find out how leaky your house is, and now is a good time to do it - before it gets cold. 

A few years ago I made a cheap diy version of this, which fits over a window.  It's pretty simple to do, well in the diy category I think.  It's a car radiator fan - I picked one from a crashed sports car on ebay, and a fixed 15V 16A supply.  It works best to fit the fan blowing out of the house, so that any leakages pull air inwards, which is easiest to detect with the back of your hand.  I used it to help make our house airtight, ready for mvhr some time back.  Pulled it out again to check how things were!

If all of this goes well, you can also measure the leakyness - this involves measuring the pressure and the air flowrate.  TBH this is less useful than finding and fixing the faults in the first place.  You can make a manometer, and buy a cheap airspeed meter.

Attached is a pic of the fan in place!

I found a few places that I will fix:

Around the lofthatch handle

A few sockets still leak 

The back of our bath leaks

Toilet overflow!

diyfan

 

 


   
👍
3
Quote
Forum Jump:
  Previous Topic
Next Topic  
Share:

Join Us!

Trusted Installers

Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.

✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available

👉 Find your installer now!

Latest Posts

AI Chatbot Avatar
AI Engine
Talk to
Wattson:
AI Avatar
Welcome to Renewable Heating Hub! Ask me anything about heat pumps: how they work, running costs or even how to find installers in your area.

By using this chatbot, you agree to the recording and processing of your data by our website and the external services it might use (LLMs, vector databases, etc.).

Wattson provides general guidance only. Always consult a qualified installer or manufacturer. Use of this chatbot implies agreement with our Terms of Use.