MVHR Cost and When It Pays: High Peak, Stockport and Greater Manchester

MVHR Explained: The Loop, the Core and the Rules

An MVHR unit sits in the loft or a cupboard and runs all day. It pulls stale, damp air out of the kitchen, bathrooms and utility room through one set of ducts, and pushes filtered fresh air into the bedrooms and living rooms through another. Inside the unit, the two air streams pass each other through a heat exchanger core without mixing, so the outgoing air warms the incoming air before it reaches your rooms.

Building regulations set out how much air the system has to move. In England, Approved Document F asks for a minimum continuous rate of 19 litres a second for a one-bed home, 25 for two bedrooms, 31 for three, 37 for four and 43 for five, or 0.3 litres a second for each square metre of floor area if that gives a higher figure (HM Government, Approved Document F Volume 1, 2021 edition, Table 1.3 and paragraph 1.24, in force since 15 June 2022). Each habitable room gets its own supply of fresh air, shared out in proportion to the size of the room, and each wet room gets extract.

MVHR Cost to Install: What the Published Figures Say

Price guides and council retrofit advice give a fair picture of the market. These ranges describe typical jobs: new builds and straightforward retrofits. MyJobQuote lists the property’s age and the ease of access for ducting among the things that move a price, and a retrofit in an older stone house, where each duct has to find a route through finished floors and thick walls, tends to cost more than the top line.

For new builds, a quantity surveyor writing for Homebuilding & Renovating put the system for an average four-bed home at about £3,500 for a standard economy system, around £7,000 for a Passivhaus-grade system and upwards of £13,500 for room-by-room control with active cooling, with installation from £1,000 to upwards of £4,000 on top and £300 to £500 for design (Tim Phillips, Homebuilding & Renovating, 28 February 2024). Prices have moved since early 2024, so treat those as a floor.

Five lines on an MVHR quote that move the price

MVHR quotes for houses of the same size can sit thousands of pounds apart, and the gap traces back to five lines. An honest quote names each of them.

A cheap quote that leaves out the design or the making good tends to get expensive once the work starts. On ours, the duct routes, the unit and the airflow design sit in writing before we order anything.

Is MVHR Worth It? Start With How Airtight Your House Is

Heat recovery can only save heat that leaves through the ducts. In a draughty house, warm air also leaks out through gaps round floorboards, loft hatches and old window frames, and that air bypasses the MVHR unit altogether. The tighter the house, the larger the share of air that passes through the heat exchanger, and the more heat the unit hands back.

Building regulations draw the line in the same place. Approved Document F calls a house highly airtight when its design air permeability is lower than 5 m³/(h·m²) at 50 Pa, or its tested figure is lower than 3, and notes that MVHR systems should get more efficient as a dwelling becomes more airtight (Approved Document F Volume 1, 2021 edition, Appendix A definitions and the note under paragraph 1.73). A quantity surveyor writing for Homebuilding & Renovating put numbers on it: at an air permeability of 5, heating bill savings are likely to be under 5% a year, and at 3 they could reach 20% (Homebuilding & Renovating, 28 February 2024).

If the house stays draughty and no fabric work is planned, a heat recovery system costing several thousand pounds will recover little heat. In that case we tell you at the survey.

Damp, Condensation and Stone Houses in the High Peak

Stone terraces and cottages fill the older streets of New Mills, Glossop, Buxton and Hayfield, and plenty of them show condensation on the bedroom windows on a cold morning. A family produces moisture all day from cooking, showers, drying clothes and breathing. If that moisture has nowhere to go, it settles on the coldest surface in the room and mould follows.

MVHR deals with that moisture at the source. The system extracts from the kitchen and bathrooms on a constant loop, and Approved Document F asks for the design to keep moist air from the wet rooms from finding its way back into the habitable rooms (paragraph 1.71). That makes it a strong fit for a home where the windows stay shut all winter and the walls in the corners turn black.

Two practical points follow for a stone house in the High Peak:

• Ventilation fixes moisture you make inside. Water coming through a wall from a blocked gutter, failed pointing or a high ground level outside is a building repair, and it needs sorting before any ventilation design.
• Stone walls need to dry out. Lime-pointed solid walls move moisture through themselves. A ventilation design for a house like that has to work alongside the wall, and the duct routes have to avoid cutting through anything a conservation officer would object to.

If condensation and mould are the reason you’re reading this, tell us which rooms suffer when you book, and the survey works out whether whole-house MVHR suits your house and its walls.

MVHR Running Costs: Fans, Filters and Servicing

The fans run day and night, so the running cost is easy to work out on paper. Approved Document L caps the specific fan power of a supply-and-extract system at 1.5 watts for each litre a second of air it moves (Approved Document L Volume 1, 2021 edition incorporating 2023 amendments, paragraph 6.55). Multiply that limit by the minimum ventilation rate for your house and you have the most a compliant system should draw at that rate.

The table works that ceiling through at the Ofgem price cap for 1 October to 31 December 2026, where electricity costs 26.32p per kWh as a Great Britain average for direct debit customers (Ofgem, Energy price cap unit rates and standing charges, checked 13 October 2026):

Three things move your real figure. A good unit draws less than the legal limit, and its data sheet gives the specific fan power to put in place of the 1.5. The boost setting for cooking and showers adds some hours at a higher speed. A large house can need a higher rate than the bedroom count suggests, because the 0.3 litres per square metre rule takes over: a 150 m² four-bed needs 45 l/s, which comes to about £156 a year at the same limit. For comparison, the Homebuilding & Renovating guide puts typical use at around 300 kWh a year, which is £78.96 at today’s cap.

Electricity carries no VAT from 1 October 2026 to 31 March 2027 under the current cap, and Ofgem resets the cap every three months, so we work the sum at the rate in force on the day we quote.

Filters and servicing

The filters catch dust and pollen on the way in and protect the heat exchanger. Replacement sets cost £15 to £120 and need changing every 6 to 12 months, with a check every six months, and more often near a building site or a main road. An annual MVHR service costs £100 to £300 (MyJobQuote, updated 8 October 2026).

Pairing MVHR With a Heat Pump

A heat pump has to replace all the heat the house loses, and air leaving the building is one of those losses. Fresh air that comes in cold and leaves warm takes heat with it. With heat recovery on that air, the heat pump has less to replace, and the running cost of the whole system falls with it.

The two systems also compete for space. Heat pump pipework and a hot water cylinder take routes through the house; MVHR ducts need routes of their own, often through the same floors and cupboards. If two installers design them at different times, one system tends to squeeze the other. We prefer to design MVHR inside the same survey as your heating, working from the heat loss, the room volumes and the power available in each room, so the ventilation and the heating share one set of drawings.

If you’re planning a heat pump, solar and a battery together, the full renewables package puts them into one design with one company accountable for all of it, and MVHR can join the same drawings. We look at standalone MVHR case by case: tell us about the house and we’ll say whether it makes sense on its own.

Our MVHR Quote, Line by Line

Your price comes out of the design survey. We measure the house, design the ductwork and the airflow, and write the figure into a fixed quote before we order anything. Our MVHR installation page covers the full process. In short, the quote carries:

• A room-by-room airflow assessment, measured in person by the engineer who designs your system
• The Mitsubishi MVHR unit and the price, with the duct routes and airflow rates on the design drawings
• The install time agreed up front: 3 to 4 weeks for a retrofit, 1 to 2 weeks for a new build
• Commissioning to the design airflow rates, proved room by room, with a walk-through of the controls at handover
• A 2-year workmanship guarantee on the installation, alongside the manufacturer’s warranty on the unit

We cover homes across the High Peak, from New Mills, Whaley Bridge and Chapel-en-le-Frith to Buxton, Glossop, Hayfield and Disley, and over into Marple, Mellor, Stockport and the Greater Manchester side.