Condensation, mould and landlords, Bristol
Indoor air quality surveys in Bristol
CO2, humidity and particulates logged for a week, with plain-English findings, across Bristol.
- From £150 inc VAT per home
- Charged visit, price agreed first
An indoor air quality survey measures how fresh and how damp the air in a building really is, over days rather than minutes. We place loggers that record CO2, humidity and temperature (and particulates in workplaces), then explain what the readings mean and what ventilation changes would help.
Across Bristol the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Bristol.
Air quality surveys in Bristol at a glance
- Area
- Bristol
- Towns listed
- 1, largest Bristol
- Postcode districts
- BS10 and BS1
- Price region
- South West
- Survey
- Charged visit, price agreed first
What indoor air quality surveys involves
CO2 is a practical indicator of whether a room is getting enough fresh air for the number of people in it: levels that climb steadily through a meeting or a night in a bedroom point to under-ventilation. Humidity readings show whether moisture is being removed or lingering long enough to cause condensation and mould. Surveys are useful before spending money: they show whether a problem is constant or happens at particular times, which rooms are worst, and whether an existing system is doing its job.
Spot checks
Readings taken during a single visit, where a quick answer is enough.
Home survey
Loggers in bedrooms, living areas and wet rooms for 7 days, with a written summary.
Workplace survey
CO2, humidity, temperature and particulates in offices, classrooms or meeting rooms.
Guide prices in Bristol
| Work | Guide price |
|---|---|
| Home air quality check: CO2, humidity and temperature logged for 7 days (per home) | £150–£255 inc VAT |
| Workplace air quality survey: CO2, PM2.5, humidity, 7 days logged, written report (per survey) | £525–£1,250 + VAT |
Guide prices using South West rates. Home prices include VAT at 20%; business prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- A new ventilation system that does not feel right
- A bedroom that feels stale in the morning
- Headaches or drowsiness in meeting rooms or classrooms
Rules in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Employers have a separate duty under the Workplace Regulations 1992 to provide effective and suitable ventilation.
How the job runs
- Plan
- Place loggers
- Log
- Analyse
- Report
Towns we cover in Bristol
Questions about indoor air quality surveys in Bristol
Is the survey free in Bristol?
This is a charged visit because it is servicing, testing or repair work. We tell you the cost before booking. Surveys for new installations on the UK mainland are free.
What is a good CO2 level indoors?
Outdoor air is around 400 to 450 parts per million; indoor levels that stay well below about 1,000 ppm usually indicate reasonable ventilation for the people in the room, while sustained levels much higher suggest it needs improving.
What humidity should a home be?
Relative humidity of roughly 40 to 60 percent is comfortable for most homes. Readings that sit above 70 percent for long periods make condensation and mould much more likely.
Which rules apply to ventilation in Bristol?
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Which towns in Bristol do you cover?
All of Bristol, including Bristol. If your town is not listed, send the postcode and we will confirm.
Other services in Bristol
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.