MVHR installation in Dorset

We survey Dorset homes for MVHR before quoting, because the duct routes decide the price more than the unit does.

Every job in Dorset gets a written quote before it starts and a commissioning record when it finishes. We cover Wimborne Minster, Canford Heath, Bournemouth, Poole and Weymouth and the villages around them.

MVHR in Dorset at a glance

Area: Dorset
Towns listed: 14, largest Bournemouth
Postcode districts: BH14, BH15, DT3, DT4, BH6 and BH7
Price region: South West
Survey: Free survey (UK mainland)

How we do it

Inside the unit the two airflows pass each other across a heat exchanger without mixing, so the incoming fresh air picks up heat from the outgoing air. Filters on both sides keep pollen and dust out of the house and keep the exchanger clean. MVHR works best in a home that is reasonably airtight: a new build, a deep retrofit with insulation and new windows, or a renovation where ceilings are coming down anyway.

Summer bypass and boost controls

Bypass lets cooler night air in without heat recovery; humidity or switch boost for showers and cooking.

Retrofit in an occupied home

Ducts routed through the loft and down through cupboards or boxed corners. Most semis are done in 3 to 5 days.

New build or full renovation

Ducts go in at first fix before plasterboard, which is the cheapest and neatest time to fit MVHR.

Guide prices in Dorset

MVHR installation guide prices in Dorset
Work	Guide price
Whole-home MVHR retrofit, 1 to 2 bedroom flat (per home)	£4,625–£7,250 inc VAT
Whole-home MVHR retrofit, 3 bedroom house (per home)	£6,700–£9,850 inc VAT
Whole-home MVHR retrofit, 4 to 5 bedroom house (per home)	£9,300–£14,500 inc VAT
MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home)	£5,150–£8,250 inc VAT

South West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.

When to get it looked at

Stale air or cooking smells that hang around
Pollen or traffic pollution you want filtered out
Condensation on windows every morning in winter

Rules in England

In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.

How the job runs

Survey and room schedule
Design and airflow rates
First fix
Second fix and valves
Commission and hand over

Towns we cover in Dorset

Questions about MVHR installation in Dorset

Is the survey free in Dorset?

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.

How much does MVHR cost to install?

A typical retrofit costs £6,450 to £9,450 including VAT for a three-bedroom house, and £4,950 to £7,950 when it goes in during a new build or full renovation. Flats start lower and large detached homes cost more because of the duct runs. We give a fixed price after the survey.

Is MVHR worth it in an older house?

It can be, but the payback is best in a home that is fairly airtight. In a draughty house MVHR still gives steady fresh air and condensation control, but a PIV unit or continuous extract fans may solve the same problem for far less. We will tell you which on survey.

Which rules apply to ventilation in Dorset?

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 Dorset do you cover?

All of Dorset, including Wimborne Minster, Canford Heath, Bournemouth, Poole and Weymouth. If your town is not listed, send the postcode and we will confirm.

Call or message us with your postcode and the number of bedrooms and we will come back with a guide price for Dorset.