Indoor air quality surveys in County Durham

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 County Durham, including Hartlepool, Stockton-on-Tees, Durham, Chester-le-Street and Billingham. Prices use North East rates. Servicing, testing and repair visits are charged, and we tell you the cost before booking.

Air quality surveys in County Durham at a glance

Area: County Durham
Towns listed: 14, largest Darlington
Postcode districts: DL5, DL4, DL14, SR2, SR3 and SR8
Price region: North East
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.

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 County Durham

Indoor air quality surveys guide prices in County Durham
Work	Guide price
Home air quality check: CO2, humidity and temperature logged for 7 days (per home)	£135–£225 inc VAT
Workplace air quality survey: CO2, PM2.5, humidity, 7 days logged, written report (per survey)	£455–£1,100 + VAT

Guide prices using North East 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.

Signs it is time to call us

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. 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 County Durham

Questions about indoor air quality surveys in County Durham

Is the survey free in County Durham?

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.

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.

How long do the loggers stay?

Usually around 7 days, so the readings cover normal weekday and weekend use.

Which rules apply to ventilation in County Durham?

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 County Durham do you cover?

All of County Durham, including Hartlepool, Stockton-on-Tees, Durham, Chester-le-Street and Billingham. If your town is not listed, send the postcode and we will confirm.