Mechanical Ventilation with Heat Recovery (MVHR)

While often overlooked, ventilation is critical to both energy efficiency and health. Without it, airtight homes can trap moisture, create condensation, and compromise indoor air quality. That’s not just uncomfortable – it’s avoidable.

Why does Mechanical Ventilation with Heat Recovery (MVHR) Matter?

Most existing homes leak air through gaps, cracks, and poor construction. In those homes, “ventilation” happens accidentally. But once you insulate and make a building airtight, those leaks disappear – and so does the unintended air exchange.

Without a planned strategy, airtight homes risk poor air quality, dampness, and overheating. MVHR solves this by continuously supplying fresh, filtered air while recovering up to 90% of the heat from the outgoing stale air.

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Key Elements of MVHR

Bespoke System Design

Correct Installation

Quality Equipment

Detailed Commissioning

Ongoing Maintenance

Correct Operation

Recent Projects

  • Penwortham Retrofit

    Whole house retrofit of a detached 4 bedroom house estimated to have been built in the 1920s

    As the air-tightness of the house was improved during the retrofit, a provision for ventilation was essential without loosing all the heat.

    During the testing / design phase of the retrofit, we discovered the main bedroom and kitchen were regularly reaching dangerous levels of TVOCs also.

  • Preston Community Centre MVHR

    On this project the MVHR was added during the retrofit of this community centre, as we had improved the air tightness of the building via new (better installed) triple glazed windows and repair of the external / internal facade.

    When designing this system we chose to leave some of the system visible (within the thermal envelope) so the visitors of the community centre could benefit from learning about the technology.

FAQ’s

  • MVHR (Mechanical Ventilation with Heat Recovery) continuously supplies fresh, filtered air while extracting stale, moist air. This improves indoor air quality, reduces allergens, and recovers heat to save energy—creating a healthier, more comfortable home.

  • We conduct a thorough assessment of your property’s size, layout, insulation, and your family’s lifestyle needs. This allows us to design a bespoke system that maximizes air quality, comfort, and energy efficiency.

  • By continuously removing moist, stale air and controlling humidity levels, MVHR prevents the conditions that cause mould and condensation—protecting your home and your family’s health.

  • Yes. Our team includes fully qualified electricians and skilled joiners who ensure your MVHR system is expertly installed with a neat, professional finish.

  • MVHR units typically recover up to 90% of heat from outgoing air, reducing heating bills by maintaining warmth while providing constant fresh air.

  • Yes. We offer ongoing servicing, including filter changes and system checks, to ensure your MVHR operates efficiently and maintains healthy air quality over time.

  • Item descriptionAbsolutely. MVHR filters incoming air to remove pollen, dust, and pollutants, significantly improving air quality and reducing triggers for respiratory conditions.

  • MVHR can be installed in both new and existing homes. We tailor the system design to minimise disruption and adapt to your property’s unique requirements.

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