Indoor air quality surveys in Cornwall

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.

We carry out indoor air quality surveys across Cornwall, including Falmouth, St Austell, Truro, Camborne and Newquay. Prices use South West rates. Visits for this work are charged, with the price agreed before we arrive.

Air quality surveys in Cornwall at a glance

Area: Cornwall
Towns listed: 10, largest Redruth
Postcode districts: TR18, PL22, PL30, PL5, PL11 and TR12
Price region: South West
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.

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.

Home survey

Loggers in bedrooms, living areas and wet rooms for 7 days, with a written summary.

Guide prices in Cornwall

Indoor air quality surveys guide prices in Cornwall
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

South West 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

You want evidence before spending money on ventilation
Staff complaints about stuffiness
A new ventilation system that does not feel right

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 Cornwall

Questions about indoor air quality surveys in Cornwall

Which towns in Cornwall do you cover?

All of Cornwall, including Falmouth, St Austell, Truro, Camborne and Newquay. If your town is not listed, send the postcode and we will confirm.

Do you measure particulates?

Workplace surveys include PM2.5 particulates; homes can have them added on request.

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.

Are prices different in Cornwall?

Our guide prices are adjusted by region. In Cornwall we use South West rates, so home air quality check: CO2, humidity and temperature logged for 7 days is typically £150 to £255 inc VAT per home.

Is the survey free in Cornwall?

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.