MVHR and building physics knowledge for a healthy, comfortable and energy efficient home
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 recommended third party installers, the MVHR system forms part of the low energy retrofit of a 340m2 Georgian home in Finchley, London N2. The … Read more
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 and has smooth and anti-bacterial lining within the duct. Installed by our trusted installers the … Read more
Heat, Space and Light Ltd has replaced and re-commissioned an under-performing MVHR unit with a brand new 91% efficient Zehnder MVHR in a self-built eco home in Glastonbury, Somerset. The old MVHR was a weak link in an otherwise exceptionally high performance, energy efficient home. The new MVHR unit now features Automatic Summer Bypass, important … Read more
A Mechanical Ventilation Heat Recovery (MVHR) unit is a cornerstone of a low energy home with healthy indoor air. There are a lot of MVHRs on the market, and one way to compare between another is to look at its Heat Exchanger Efficiency score. Today I’ll explain what to watch for when comparing a cheap … Read more
This article will explain MVHR’s compatibility with other mechanical services within the home such as underfloor heating, air conditioning, heat pumps and cooker hoods. An MVHR system is a future-facing home technology that will help achieve the UK’s low carbon climate change goals, so it’s important that it works well. MVHR and underfloor heating An … Read more
Heat, Space and Light Ltd technicians have conducted forensic airtightness testing on a renovated London Victorian end-of-terrace. The results of the four-hour visit will have improved its comfort, energy efficiency and acoustics by up to 30 per cent, and lowered the home’s heating bills for life. The forensic airtightness pressure test was conducted over four … Read more
We have completed the design and first fix installation of a Zehnder Q350 MVHR system with ComfoTube ducting into a 100-year-old cottage that’s undergoing a low energy retrofit upgrade. The MVHR system will improve the indoor air quality, comfort and energy efficiency, but also protect the century-old building fabric by ensuring indoor humidity is dealt … Read more
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. We pressure tested the home this December using a calibrated airtightness testing fan and it … Read more
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 humidity in the home? And is it expensive to install? The basics of enthalpy heat … Read more
When we consider examples of good hygiene in our home, we may think of easy-to-clean materials, strong disinfectants and mops and buckets. But as Covid-19 is proving, hygiene in the home also relates significantly to the air we breathe indoors, and the bacterial and viral particles suspended within the air around us. There are many … Read more