Indoor air quality surveys in County Down

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 Down, including Newtownards, Newry, Banbridge, Dundonald and Holywood. Prices use Northern Ireland rates. Work here is by arrangement, with travel quoted in writing first.

Air quality surveys in County Down at a glance

Area: County Down, Northern Ireland
Towns listed: 8, largest Bangor
Postcode districts: BT16, BT19, BT35, BT32, BT63 and BT4
Price region: Northern Ireland
Survey: By arrangement, travel quoted first

What the work 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 Down

Indoor air quality surveys guide prices in County Down
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

These ranges use our Northern Ireland rates. Home prices include VAT at 20%; business prices exclude VAT. You get a fixed written price before any work is booked. Travel is quoted separately for this area.

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 Northern Ireland

In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. Employers in Northern Ireland have an equivalent ventilation duty under the 1993 Northern Ireland workplace regulations.

How the job runs

Plan
Place loggers
Log
Analyse
Report

Towns we cover in County Down

Questions about indoor air quality surveys in County Down

Which rules apply to ventilation in County Down?

In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.

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.

Which towns in County Down do you cover?

All of County Down, including Newtownards, Newry, Banbridge, Dundonald and Holywood. If your town is not listed, send the postcode and we will confirm.

Are prices different in County Down?

Our guide prices are adjusted by region. In County Down we use Northern Ireland rates, so home air quality check: CO2, humidity and temperature logged for 7 days is typically £135 to £225 inc VAT per home.