Commercial ventilation, Cheshire
Air handling units (AHU) in Cheshire
AHU replacement, EC fan upgrades, controls and planned servicing, across Cheshire.
- From £9,450 + 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.
Every job in Cheshire gets a written quote before it starts and a commissioning record when it finishes. We cover Widnes, Runcorn, Macclesfield, Northwich and Warrington and the villages around them.
Air handling units in Cheshire at a glance
- Area
- Cheshire
- Towns listed
- 24, largest Warrington
- Postcode districts
- CW12, ST7, M90, SK8, L18 and L19
- Price region
- North West
- Survey
- Free survey (UK mainland)
How we do it
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 Cheshire
| Work | Guide price |
|---|---|
| Air handling unit replacement, small to medium unit, like-for-like position (per unit) | £9,450–£33,200 + VAT |
| Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit) | £185–£375 + VAT |
North West rates shown. Prices exclude VAT. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- Noisy plant rooms or rooftop units
- Filters that are never changed
- Corroded casings or leaking drain trays
Rules in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Workplaces must also be ventilated with a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992.
How the job runs
- Survey
- Options
- Plan
- Install
- Commission
Towns we cover in Cheshire
- Warrington
- Chester
- Crewe
- Ellesmere Port Town
- Widnes
- Runcorn
- Macclesfield
- Northwich
- Great Sankey
- Winsford
- Congleton
- Wilmslow
- Garston
- Speke
- Halewood
- Sandbach
- Nantwich
- Neston (Cheshire)
- Poynton
- Middlewich
- Blacon
- Alsager
- Knutsford
- Lymm
Questions about air handling units (AHU) in Cheshire
Is the survey free in Cheshire?
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.
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.
Which rules apply to ventilation in Cheshire?
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Which towns in Cheshire do you cover?
All of Cheshire, including Widnes, Runcorn, Macclesfield, Northwich and Warrington. If your town is not listed, send the postcode and we will confirm.
Other services in Cheshire
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