Commercial ventilation, County Armagh
Air handling units (AHU) in County Armagh
AHU replacement, EC fan upgrades, controls and planned servicing, across County Armagh.
- From £9,150 + VAT per unit
- By arrangement

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.
County Armagh 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 County Armagh at a glance
- Area
- County Armagh, Northern Ireland
- Towns listed
- 3, largest Craigavon
- Postcode districts
- BT64, BT65, BT62, BT63, BT60 and BT61
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
What air handling units (AHU) 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.
Like-for-like replacement
New unit in the same position, connected to existing ductwork.
EC fan retrofit
Belt-driven fans replaced with direct-drive EC fans.
Controls upgrade
New controls, sensors and BMS integration.
Guide prices in County Armagh
| Work | Guide price |
|---|---|
| Air handling unit replacement, small to medium unit, like-for-like position (per unit) | £9,150–£32,150 + VAT |
| Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit) | £180–£365 + VAT |
Guide prices using Northern Ireland rates. Prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first. Travel is quoted separately for this area.
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 Northern Ireland
In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. Northern Ireland has its own Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993 with the same duty to ventilate.
How the job runs
- Survey
- Options
- Plan
- Install
- Commission
Towns we cover in County Armagh
Questions about air handling units (AHU) in County Armagh
Is the survey free in County Armagh?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
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.
Which rules apply to ventilation in County Armagh?
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.
Which towns in County Armagh do you cover?
All of County Armagh, including Craigavon, Portadown and Armagh. If your town is not listed, send the postcode and we will confirm.
Other services in County Armagh
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.