Property guide
Ventilation and air quality
Condensation, mould and stale air
A warmer, more airtight home needs controlled fresh air. Without it, moisture from cooking, washing and breathing settles on cold surfaces and becomes mould.
Signs you may notice
- Black mould in corners or behind furniture
- Streaming windows in the morning
- Musty smells
- Stuffy bedrooms
- Laundry slow to dry indoors
Common causes
- Moisture with nowhere to go
- Cold spots where walls or glass meet warm air
- Blocked or missing extract fans and trickle vents
Free checks today
- Note where and when condensation appears
- Check extract fans actually pull a sheet of paper
- Open trickle vents and keep lids on pans
Technologies that can help
Breathe ventilation by Amporah
Continuous, quiet airflow designed around moisture and comfort. No heat recovery credit is claimed without tested data.
Confirmed at the survey
- Moisture readings and mould locations
- Airflow and existing ventilation
- Noise and filter access needs
Ask the AI guide about this
We'll pre-fill the guide questions with the ventilation and air quality signs above. Open "Help me choose" in the calculator, adjust anything, then get your reasoned starting plan.