Is my home too draughty for MVHR?

Airtightness pressure test kit installed in retrofit home achieving 1 score

As much as 25% of the heat loss of a building is via air leakages in the building fabric (ie, draughts). The airtightness of the building fabric is therefore an important metric to measure and improve as much as possible… Continue reading

MVHR system balancing and handover in Surrey luxury eco new build

MVHR system installed into plant room next to Air Source Heat Pump and hot water cylinder

Our MVHR design and commissioning team has recently completed the detailed ductwork design, supply of materials and balancing of our Mechanical Ventilation with Heat Recovery system (MVHR) at a highly sophisticated new build home in Surrey. As part of our… Continue reading

90mm semi-rigid radial MVHR ducting installation in London deep energy retrofit

90mm semi-rigid ducting in webbed joists and passing through core-drilled blockwork wall for MVHR system

The first fix MVHR installation of a 90mm radial ducted Mechanical Ventilation with Heat Recovery (MVHR) system continues. Designed and supplied by Heat, Space and Light Ltd and installed by our friends at Apex Ventilation, the MVHR system forms part… Continue reading

Flat 51mm ducting MVHR system installation in low ceiling building

Flat 51mm semi-rigid ducting running pinned neatly to ceiling joists to prevent loss of room height

The Heat, Space and Light team has designed and supplied a flat 51mm semi-rigid ducting MVHR system for a home in London, in order not to lose any room height. The ducting measures a mere 51mm in height, is crush-proof… Continue reading

Cotswold new build is 55x more airtight than Building Regs and 3x more airtight than Passivhaus

It is subtle and understated in its impact on UK housing, but this new build bungalow home is one of the most energy efficient buildings in the world – and represents the future of housebuilding in the UK and Europe.… Continue reading

What’s the difference between an MVHR Heat Exchanger and an Enthalpy that recovers moisture?

Internal mechanism of an MVHR unit

If you’re researching installing a Mechanical Ventilation with Heat Recovery (MVHR) system for your project, you may have heard of an Enthalpy heat exchanger or ERV (Energy Recovery Ventilation). But what is an “Enthalpy” heat exchanger? How does it change… Continue reading