Condensation, mould and landlords, Derbyshire
Indoor air quality surveys in Derbyshire
CO2, humidity and particulates logged for a week, with plain-English findings, across Derbyshire.
- 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.
Our team is based in Great Barr, Birmingham, and we work throughout Derbyshire, from Chesterfield, Long Eaton, Ilkeston, Swadlincote and Staveley. Visits for this work are charged, with the price agreed before we arrive.
Air quality surveys in Derbyshire at a glance
- Area
- Derbyshire
- Towns listed
- 21, largest Derby
- Postcode districts
- DE55, S8, S17, DE5, DE56 and SK17
- 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.
Workplace survey
CO2, humidity, temperature and particulates in offices, classrooms or meeting rooms.
Before and after
Readings taken before and after a ventilation upgrade to show the difference.
Spot checks
Readings taken during a single visit, where a quick answer is enough.
Guide prices in Derbyshire
| 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.
Signs it is time to call us
- A bedroom that feels stale in the morning
- Headaches or drowsiness in meeting rooms or classrooms
- Condensation and mould with no obvious cause
Rules in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Workplaces must also be ventilated with a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992.
How the job runs
- Plan
- Place loggers
- Log
- Analyse
- Report
Towns we cover in Derbyshire
- Derby
- Chesterfield
- Long Eaton
- Ilkeston
- Swadlincote
- Staveley
- Belper
- Heanor
- Alfreton
- Dronfield
- Ripley
- Buxton
- New Mills
- Glossop
- Sinfin
- Matlock
- Pinxton
- Oakwood
- Chaddesden
- Bolsover
- Shirebrook
Questions about indoor air quality surveys in Derbyshire
Are prices different in Derbyshire?
Our guide prices are adjusted by region. In Derbyshire 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.
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.
How much does an air quality survey cost?
A home survey costs £145 to £245 including VAT, and a workplace survey £495 to £1,195 excluding VAT, depending on the number of rooms.
Is the survey free in Derbyshire?
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 Derbyshire?
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 Derbyshire
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