Commercial ventilation, Dunbartonshire
Air handling units (AHU) in Dunbartonshire
AHU replacement, EC fan upgrades, controls and planned servicing, across Dunbartonshire.
- From £9,550 + VAT per unit
- Free survey

An air handling unit (AHU) is the central plant that filters, moves and often heats, cools or recovers heat from the air for a building's ventilation system. We replace ageing units, upgrade fans and controls, and service AHUs so they keep delivering their design airflows.
Our team is based in Great Barr, Birmingham, and we work throughout Dunbartonshire, from Vale of Leven, Bishopbriggs, Dumbarton, Kirkintilloch and Milngavie. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
Air handling units in Dunbartonshire at a glance
- Area
- Dunbartonshire, Scotland
- Towns listed
- 7, largest Bearsden
- Postcode districts
- G15, G60, G82, G83, G21 and G22
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
What the work involves
New units must meet current ecodesign rules for fan efficiency and heat recovery. Replacements often involve crane lifts, roof work and out-of-hours changeovers. We plan the lift, temporary arrangements and isolations with you so the building can keep working.
EC fan retrofit
Belt-driven fans replaced with direct-drive EC fans.
Controls upgrade
New controls, sensors and BMS integration.
Planned servicing
Filters, belts, coils, drains and controls on a schedule.
Guide prices in Dunbartonshire
| Work | Guide price |
|---|---|
| Air handling unit replacement, small to medium unit, like-for-like position (per unit) | £9,550–£33,550 + VAT |
| Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit) | £185–£380 + VAT |
These ranges use our Scotland rates. Prices exclude VAT. You get a fixed written price before any work is booked.
Common reasons people call
- Corroded casings or leaking drain trays
- Rooms that no longer get enough air
- Rising energy bills from old plant
Rules in Scotland
In Scotland, ventilation is covered by the Building (Scotland) Regulations and section 3 of the Technical Handbooks, and most building work needs a building warrant first. The Workplace (Health, Safety and Welfare) Regulations 1992 apply in Scotland too, requiring sufficient fresh or purified air.
How the job runs
- Survey
- Options
- Plan
- Install
- Commission
Towns we cover in Dunbartonshire
Questions about air handling units (AHU) in Dunbartonshire
Which towns in Dunbartonshire do you cover?
All of Dunbartonshire, including Vale of Leven, Bishopbriggs, Dumbarton, Kirkintilloch and Milngavie. If your town is not listed, send the postcode and we will confirm.
What does an AHU service cost?
A service visit typically costs £195 to £395 per unit excluding VAT, depending on size and access.
Do you work on rooftop units?
Yes, with safe access arranged for roof work.
Are prices different in Dunbartonshire?
Our guide prices are adjusted by region. In Dunbartonshire we use Scotland rates, so air handling unit replacement, small to medium unit, like-for-like position is typically £9,550 to £33,550 + VAT per unit.
Is the survey free in Dunbartonshire?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Other services in Dunbartonshire
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.