Condensation, mould and landlords, Northamptonshire
Indoor air quality surveys in Northamptonshire
CO2, humidity and particulates logged for a week, with plain-English findings, across Northamptonshire.
- From £140 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.
Northamptonshire has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.
Air quality surveys in Northamptonshire at a glance
- Area
- Northamptonshire
- Towns listed
- 8, largest Northampton
- Postcode districts
- NN16, NN1, NN2, NN17, NN18 and NN14
- Price region
- East Midlands
- Survey
- Charged visit, price agreed first
How we do it
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 Northamptonshire
| Work | Guide price |
|---|---|
| Home air quality check: CO2, humidity and temperature logged for 7 days (per home) | £140–£240 inc VAT |
| Workplace air quality survey: CO2, PM2.5, humidity, 7 days logged, written report (per survey) | £485–£1,175 + VAT |
East Midlands rates shown. Home prices include VAT at 20%; business prices exclude VAT. The fixed price is confirmed in writing after we have seen the job.
When to get it looked at
- Staff complaints about stuffiness
- A new ventilation system that does not feel right
- A bedroom that feels stale in the morning
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 Northamptonshire
Questions about indoor air quality surveys in Northamptonshire
Are prices different in Northamptonshire?
Our guide prices are adjusted by region. In Northamptonshire we use East Midlands rates, so home air quality check: CO2, humidity and temperature logged for 7 days is typically £140 to £240 inc VAT per home.
Will you sell me a system after the survey?
Only if the readings show you need one. The report sets out the cheapest effective options.
Do you measure particulates?
Workplace surveys include PM2.5 particulates; homes can have them added on request.
Is the survey free in Northamptonshire?
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.
Which rules apply to ventilation in Northamptonshire?
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.
Other services in Northamptonshire
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