Modern homes are airtight by design. The fix is quieter than you think.
Condensation, mould, stuffiness, dust; most of it is your house telling you it can't breathe. MVHR, PIV and properly designed ventilation solve it without you ever opening a window.
Drier walls, fresher rooms, easier breathing.

The ventilation industry suffers from installers who never measure airflow and homeowners who confuse fresh air with cold air. Designed properly, you get a house that always smells clean, never feels stuffy, and recovers most of the heat on the way out.
How air quality works
Cooking, washing, breathing and drying clothes add several litres of water to the air every day. In a modern airtight house, none of that leaves on its own.
The moisture is being made
Cooking, washing, breathing and drying clothes add several litres of water to the air every day. In a modern airtight house, none of that leaves on its own.
Remove it where it's born
Sensible extract in the kitchen and the bathrooms takes the worst of it out at source, before it ever reaches the cold corners where mould tends to grow.
Move the rest, gently and continuously
Whole-house ventilation, ideally with heat recovery, replaces stale air with fresh and barely loses any warmth doing it. The house breathes properly without you ever opening a window.
The ventilation industry suffers from installers who never measure airflow and homeowners who confuse fresh air with cold air.
Inside this hub
Flagship tool
Ventilation Assessment
Six questions, then a clear answer: MVHR, PIV, dMEV or extract upgrade; with realistic install costs.
Read first
Ventilation; what your home actually needs
Why airtight homes need mechanical ventilation and how to choose between MVHR, PIV and dMEV.
Compare
MVHR vs PIV
Which ventilation strategy fits which kind of home.
See it built
Project library
Common UK install patterns; the brief, the kit, the cost band.
Real prices
Cost intelligence
Independent UK price ranges, sourced from industry data; not RRPs.
Where to start.
Ventilation
The full ventilation hub: MVHR, PIV, extract fans, design and commissioning. Quiet, efficient air movement that you won't notice working.
MVHR
The gold standard for new builds and deep retrofits. How sizing and ducting decisions made now save you years of disappointment.
PIV
The cheap, low-disruption fix for condensation in older UK homes. When it works, when it doesn't, and what to expect installed.
Dehumidifiers
Not a substitute for ventilation, but a useful tool. What to buy, what to ignore, and the running cost no one talks about.
Decide with data.
Home Comfort Score
Cost Database
Project Library
Find out whether your home actually has an air-quality problem.
Your next step
Take the next step.
Every tool quietly contributes to Your Home so the next recommendation is sharper than the last.
Plan it
Ventilation Assessment
Six questions, then a clear answer: MVHR, PIV, dMEV or extract upgrade; with realistic install costs.
Closely related to what you're looking at.
Home Comfort Score
A 3-minute assessment scoring heating, cooling, air quality and efficiency; and a plan for what to fix first.
Closely related to what you're looking at.
Understand it
Ventilation; what your home actually needs
Why airtight homes need mechanical ventilation and how to choose between MVHR, PIV and dMEV.
Closely related to what you're looking at.
MVHR; whole-house heat recovery
The right answer for airtight homes. Costs, design, and what good install looks like.
Closely related to what you're looking at.
PIV; the cheap fix for damp
Positive Input Ventilation for leakier older homes with persistent condensation.
Closely related to what you're looking at.
Compare
Why it matters