Commercial ventilation, Highland and Moray
Air handling units (AHU) in Highland and Moray
AHU replacement, EC fan upgrades, controls and planned servicing, across Highland and Moray.
- 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 Highland and Moray, send the postcode and a few photos and we will tell you what we would recommend. Towns we cover include Nairn, Inverness, Elgin and Fort William.
Jobs in the remote Highlands and on the islands are by arrangement, with travel quoted in writing before you commit.
Air handling units in Highland and Moray at a glance
- Area
- Highland and Moray, Scotland
- Towns listed
- 4, largest Inverness
- Postcode districts
- IV31, PH33, IV12, IV1, IV2 and IV30
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
What air handling units (AHU) involves
Replacing the fan section with EC fans, or the whole unit with a modern heat recovery AHU, can cut running costs and noise while restoring airflow. 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.
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 Highland and Moray
| 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.
When to get it looked at
- Frequent belt or fan failures
- Noisy plant rooms or rooftop units
- Filters that are never changed
Rules in Scotland
Scottish projects follow the Technical Handbooks (section 3, Environment) under the Building (Scotland) Regulations, usually with a building warrant. 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 Highland and Moray
Questions about air handling units (AHU) in Highland and Moray
Are prices different in Highland and Moray?
Our guide prices are adjusted by region. In Highland and Moray 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.
Can you work out of hours?
Yes. Changeovers and crane lifts are often done at weekends or evenings to avoid disruption.
What does an AHU service cost?
A service visit typically costs £195 to £395 per unit excluding VAT, depending on size and access.
Is the survey free in Highland and Moray?
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 Highland and Moray?
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 Highland and Moray
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.