Commercial ventilation, Essex
Air handling units (AHU) in Essex
AHU replacement, EC fan upgrades, controls and planned servicing, across Essex.
- From £10,450 + 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.
Across Essex the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Harlow, Grays, Braintree, Brentwood and Southend-on-Sea.
Air handling units in Essex at a glance
- Area
- Essex
- Towns listed
- 32, largest Southend-on-Sea
- Postcode districts
- SS7, SS8, CM4, CM11, SS5 and SS6
- Price region
- East of England
- 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.
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 Essex
| Work | Guide price |
|---|---|
| Air handling unit replacement, small to medium unit, like-for-like position (per unit) | £10,450–£36,700 + VAT |
| Air handling unit service: filters, belts or EC fan check, coils, controls (per unit per visit) | £205–£415 + VAT |
East of England 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
- Corroded casings or leaking drain trays
- Rooms that no longer get enough air
- Rising energy bills from old plant
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 Essex
- Southend-on-Sea
- Basildon
- Colchester
- Chelmsford
- Harlow
- Grays
- Braintree
- Brentwood
- Clacton-on-Sea
- South Benfleet
- Canvey Island
- Billericay
- Rayleigh
- Stanford-le-Hope
- Wickford
- Witham
- Pitsea
- Maldon
- Waltham Abbey
- South Ockendon
- Harwich
- Hadleigh
- Walton-on-the-Naze
- Frinton-on-Sea
- Rochford
- Saffron Walden
- Tilbury
- Chafford Hundred
- Chigwell
- Halstead
- Buckhurst Hill
- Epping
Questions about air handling units (AHU) in Essex
Is the survey free in Essex?
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.
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 Essex?
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 Essex do you cover?
All of Essex, including Harlow, Grays, Braintree, Brentwood and Southend-on-Sea. If your town is not listed, send the postcode and we will confirm.
Other services in Essex
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.