Mechanical Ventilation with Heat Recovery (MVHR)

What is Mechanical Ventilation with Heat Recovery (MVHR)?

An mvhr system, also known as a mechanical ventilation system with heat recovery, is designed to replace stale indoor air with fresh outdoor air, while transferring warmth from outgoing air to incoming air via a heat exchanger. The process ensures indoor air remains fresh and comfortable, without constant heating or cooling. Mechanical ventilation heat recovery beats traditional extract-only systems by combining airflow control with energy efficiency, making it ideal for modern low-energy builds.

Unlike a simple mechanical extract ventilation system, which can cause heat loss and cold draughts, MVHR is a balanced, controlled solution. It uses two separate ducts—one to exhaust stale air and another to refresh the home—all managed by sensors and fans. The result is consistent air pressure, healthy humidity levels, and protection against cold walls and condensation.

MVHR is more than just ventilation; it’s a lifestyle upgrade. As homes become more insulated and airtight, natural airflow dries up. Mechanical ventilation with heat recovery steps in, delivering fresh air quietly and efficiently, so your space stays breathable and cosy year after year.

How an MVHR System Works

At the core of every mvhr system is a powerful mvhr fan and collector that draws air in and out. The mvhr extractor fan removes stale indoor air, pushing it through a mvhr heat exchanger, where the warmth in the exiting air preheats the incoming stream. Two developing ducts ensure fresh air enters living spaces while stale air is removed from kitchens, bathrooms, and utility rooms.

This heat exchanger is the heart of the mvhr heat recovery system. As warm indoor air passes through, it gives up heat to the cool incoming air, without mixing the airflows. The result? Minimal thermal loss, less need for boiler or heating use, and a comfortable indoor atmosphere throughout the seasons.

MVHR systems also manage moisture levels. By continuously refreshing air and balancing humidity, they help prevent dampness, mildew, and condensation. Combined with other products like air-source heat pumps or solar-ready systems, they form part of an eco-conscious ventilation and heat recovery system that works as a cohesive home environment solution.

Key Benefits of MVHR Ventilation Systems

One of the strongest advantages of MVHR is good ventilation. It consistently removes stale, indoor air and replaces it with filtered outdoor air, cutting down indoor pollutants, VOCs, allergens, and odours. That means clearer air, fewer respiratory irritants, and a healthier environment for everyone—especially allergy sufferers and small children.

Next up, energy savings. A quality mechanical heat recovery system can reclaim up to 90 % of the heat from outgoing air. You’ll feel less need to crank up the thermostat—your system does the heavy lifting. Lower energy consumption means lower bills and a smaller carbon footprint, making MVHR perfect for eco-aware and energy-conscious households.

Last but not least, comfort. MVHR units maintain steady temperatures and humidity year-round. Unlike standard mechanical extract systems that cycle on and off, an MVHR system offers silent, gentle ventilation that keeps your home fresh, cosy, and balanced—even when windows stay closed.

MVHR System Costs and Considerations

Considering installing MVHR? Understanding mvhr system cost is essential. Costs vary depending on system size, design, and installation complexity. A compact residential mvhr unit might cost between £3,000 and £5,000, including materials and labour, while larger, commercial-grade systems can be significantly higher. Additional prices include commissioning, ductwork, and any optional filters or smart controls.

If you're comparing mvhr cost or looking at mhrv cost (mistyped but used in some queries), the truth is that upfront investment pays off. With lower heating costs, energy grants, and increased property value, most homeowners recoup their outlay in under a decade.

Even mvhr unit cost comparisons show it’s worth choosing a reputable system. Cheap air extract solutions may save money initially, but without heat recovery, they act as a thermal sieve. Proper planning and choosing the right units ensure long-term savings and performance.

Choosing the Right MVHR Unit for Your Property

Selecting the appropriate mvhr unit starts with sizing and airflow. Measure your home’s cubic footage and rooms—this gives you target airflow in litres per second (l/s). Airflow MVHR should match your property’s needs without overworking the system or wasting energy. Pay attention to noise ratings too: opt for units under 35 dB(A) for quiet, family-friendly living spaces.

Think about application—compact units suit residential builds, while open-plan, bigger homes or commercial spaces may need larger or dual-fan units. For eco-builds, a green building store MVHR option is perfect; it often includes advanced filters, smart controls, or even integration points for renewable energy systems.

Also consider quality factors like filter grade (G4, F7, F9), bypass for summer cooling, anti-backdraft dampers, and smart controls. Reputable brands deliver peace of mind with warranties, genuine parts, and service networks.

Installation and Maintenance of MVHR Systems

When installing MVHR, professional design and installation are a must. Channels must be well routed, acoustically insulated, and sealed to ensure optimal performance. Units should be placed in central, easy-access locations—like lofts, cupboards, or utility rooms—while ducting must reach key rooms with minimal bends.

Maintenance is equally important. Regularly changing filters and checking the mvhr heat exchanger keeps performance high and indoor air quality pure. Filters typically need replacing every 6–12 months, while annual inspections from certified professionals protect against wastage and breakdowns.

Choosing a trusted installer—ideally a Redlake partner—ensures design, commissioning, and servicing are handled correctly. They’ll guide you through compliance with building regulations, ensure balanced airflow, and offer reliable aftercare support.

Why Buy Your MVHR System from Redlake Company?

At Redlake Company, we champion energy-smart homes. Our MVHR range includes compact residential units, high-capacity systems, and eco-conscious options designed for airtight builds. We guide you from start to finish—helping you choose the right ventilation solutions, sizing your unit, and selecting extras like heat recovery bypass or smart sensors.

Buying from us means expert system design, trusted brands, competitive pricing, and swift UK delivery. With our experienced team behind you, installation is smooth and stress-free, and performance is guaranteed.

Redlake Company is more than a retailer—we’re your partner in creating healthier, more efficient living spaces. Experience the difference of a properly-installed mechanical ventilation with heat recovery system. Reach out today to discuss your project and breathe easy tomorrow.