Air handling units (AHU) in Norfolk

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 Norfolk, send the postcode and a few photos and we will tell you what we would recommend. Towns we cover include Downham Market, Norwich, Great Yarmouth, King's Lynn and Thetford.

Air handling units in Norfolk at a glance

Area: Norfolk
Towns listed: 11, largest Norwich
Postcode districts: PE30, PE34, IP24, NR4, NR5 and NR19
Price region: East of England
Survey: Free survey (UK mainland)

What the work involves

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. We plan the lift, temporary arrangements and isolations with you so the building can keep working.

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 Norfolk

Air handling units (AHU) guide prices in Norfolk
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

These ranges use our East of England rates. Prices exclude VAT. You get a fixed written price before any work is booked.

Common reasons people call

Noisy plant rooms or rooftop units
Filters that are never changed
Corroded casings or leaking drain trays

Rules in England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Employers have a separate duty under the Workplace Regulations 1992 to provide effective and suitable ventilation.

How the job runs

Survey
Options
Plan
Install
Commission

Towns we cover in Norfolk

Questions about air handling units (AHU) in Norfolk

Is the survey free in Norfolk?

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.

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.

Can you work out of hours?

Yes. Changeovers and crane lifts are often done at weekends or evenings to avoid disruption.

Which rules apply to ventilation in Norfolk?

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 Norfolk do you cover?

All of Norfolk, including Downham Market, Norwich, Great Yarmouth, King's Lynn and Thetford. If your town is not listed, send the postcode and we will confirm.