Commercial ventilation, Lothians
Air handling units (AHU) in the Lothians
AHU replacement, EC fan upgrades, controls and planned servicing, across the Lothians.
- 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.
The Lothians has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.
Air handling units in the Lothians at a glance
- Area
- Lothians, Scotland
- Towns listed
- 13, largest Livingston
- Postcode districts
- EH22, EH49, EH51, EH47, EH48 and EH18
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
What the work involves
Many AHUs in older offices, schools and retail units run on belt-driven fans, clogged filters and controls nobody understands. 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.
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 Lothians
| 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.
Signs it is time to call us
- Corroded casings or leaking drain trays
- Rooms that no longer get enough air
- Rising energy bills from old plant
Rules in Scotland
Scottish projects follow the Technical Handbooks (section 3, Environment) under the Building (Scotland) Regulations, usually with a building warrant. 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 the Lothians
- Livingston
- Musselburgh
- Bathgate
- Bonnyrigg
- Penicuik
- Broxburn
- Mayfield
- Linlithgow
- Armadale
- Dalkeith
- Tranent
- Whitburn
- Dunbar
Questions about air handling units (AHU) in the Lothians
Which towns in the Lothians do you cover?
All of the Lothians, including Broxburn, Mayfield, Linlithgow, Livingston and Musselburgh. If your town is not listed, send the postcode and we will confirm.
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 it worth replacing belt-driven fans with EC fans?
Often yes. EC fans are usually more efficient, quieter and need no belt changes, and the retrofit can cost much less than a new unit.
Are prices different in the Lothians?
Our guide prices are adjusted by region. In the Lothians 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 the Lothians?
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 the Lothians
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.