Commercial ventilation, Forth Valley
Air handling units (AHU) in the Forth Valley
AHU replacement, EC fan upgrades, controls and planned servicing, across the Forth Valley.
- 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.
If you are anywhere in the Forth Valley, send the postcode and a few photos and we will tell you what we would recommend. Towns we cover include Bo’ness, Stirling, Falkirk, Alloa and Grangemouth.
Air handling units in the Forth Valley at a glance
- Area
- Forth Valley, Scotland
- Towns listed
- 5, largest Stirling
- Postcode districts
- FK10, FK12, FK1, FK2, EH49 and EH51
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
What air handling units (AHU) 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.
Controls upgrade
New controls, sensors and BMS integration.
Planned servicing
Filters, belts, coils, drains and controls on a schedule.
Like-for-like replacement
New unit in the same position, connected to existing ductwork.
Guide prices in the Forth Valley
| 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 |
Guide prices using Scotland rates. Prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- Frequent belt or fan failures
- Noisy plant rooms or rooftop units
- Filters that are never changed
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. Scottish employers also have the Workplace Regulations 1992 duty to provide effective ventilation.
How the job runs
- Survey
- Options
- Plan
- Install
- Commission
Towns we cover in the Forth Valley
Questions about air handling units (AHU) in the Forth Valley
Are prices different in the Forth Valley?
Our guide prices are adjusted by region. In the Forth Valley 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.
How much does an AHU replacement cost?
A small to medium AHU replacement in the same position typically costs £9,950 to £34,950 excluding VAT, depending on size, heat recovery and lifting.
How often should an AHU be serviced?
Most AHUs need servicing at least twice a year, with filters changed more often in dirty environments. SFG20 schedules are commonly used to set frequencies.
Is the survey free in the Forth Valley?
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.
Which rules apply to ventilation in the Forth Valley?
In Scotland, ventilation is covered by section 3 of the Building Standards Technical Handbooks. Private rented homes must meet the Repairing Standard, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Other services in the Forth Valley
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.