Indoor air quality surveys in Essex

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.

Every job in Essex gets a written quote before it starts and a commissioning record when it finishes. We cover Southend-on-Sea, Basildon, Colchester, Chelmsford and Harlow and the villages around them.

Air quality surveys in Essex at a glance

Area: Essex
Towns listed: 32, largest Southend-on-Sea
Postcode districts: CO13, CO15, SS7, SS8, SS7 and SS8
Price region: East of England
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.

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.

Before and after

Readings taken before and after a ventilation upgrade to show the difference.

Guide prices in Essex

Indoor air quality surveys guide prices in Essex
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

East of England 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.

Common reasons people call

Headaches or drowsiness in meeting rooms or classrooms
Condensation and mould with no obvious cause
You want evidence before spending money on ventilation

Rules in England

In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Essex

Questions about indoor air quality surveys in Essex

Which towns in Essex do you cover?

All of Essex, including Southend-on-Sea, Basildon, Colchester, Chelmsford and Harlow. If your town is not listed, send the postcode and we will confirm.

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.

Are prices different in Essex?

Our guide prices are adjusted by region. In Essex we use East of England 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 Essex?

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.