MVHR installation in Oxfordshire

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

Across Oxfordshire 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 Didcot, Witney, Cowley, Carterton and Oxford.

MVHR in Oxfordshire at a glance

Area: Oxfordshire
Towns listed: 13, largest Oxford
Postcode districts: OX2, OX15, OX16, OX4, OX13 and OX6
Price region: South East
Survey: Free survey (UK mainland)

How we do it

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. In a draughty older house it still ventilates well, but less of the heat-recovery benefit is felt because warm air escapes through gaps instead of the unit.

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 Oxfordshire

MVHR installation guide prices in Oxfordshire
Work	Guide price
Whole-home MVHR retrofit, 1 to 2 bedroom flat (per home)	£4,900–£7,650 inc VAT
Whole-home MVHR retrofit, 3 bedroom house (per home)	£7,100–£10,400 inc VAT
Whole-home MVHR retrofit, 4 to 5 bedroom house (per home)	£9,850–£15,350 inc VAT
MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home)	£5,450–£8,750 inc VAT

South East 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

Pollen or traffic pollution you want filtered out
Condensation on windows every morning in winter
Mould coming back in bedrooms or bathrooms after cleaning

Rules in England

In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.

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 Oxfordshire

Questions about MVHR installation in Oxfordshire

Which rules apply to ventilation in Oxfordshire?

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.

Do I keep my trickle vents with MVHR?

No. Under Approved Document F, background ventilators should not be installed with a whole-home MVHR system, so we advise closing or removing them once the system is commissioned.

How often does MVHR need servicing?

Filters usually need changing every 6 to 12 months, and a full service with a clean and airflow check once a year keeps the system efficient. Clogged filters are the most common reason MVHR stops working properly.

Which towns in Oxfordshire do you cover?

All of Oxfordshire, including Didcot, Witney, Cowley, Carterton and Oxford. If your town is not listed, send the postcode and we will confirm.

Are prices different in Oxfordshire?

Our guide prices are adjusted by region. In Oxfordshire we use South East rates, so whole-home MVHR retrofit, 1 to 2 bedroom flat is typically £4,900 to £7,650 inc VAT per home.

Send us a floor plan or a few photos of the loft and we can give a first price for your Oxfordshire home before we visit.