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Energy

Cheap MVHR or expensive MVHR? The science behind Heat Exchanger Efficiency

25 April 2021Patrick Leave a comment
Building dust is visible inside the heat exchanger as the filter doesn't fit properly - this will damage the heat exchanger

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… Continue reading →

Energy, MVHR, Ventilation Cheap MVHR vs Expensive MVHR, Health, Heat Exchanger Efficiency Calculation, How to compare MVHR prices, MVHR

How much does an MVHR or heat recovery ventilation cost to design and install?

15 September 2016Patrick 32 Comments
Installed Zehnder Q350 MVHR HVAC with pre-heater in a home utility room

This article will explain the full cost to fit a high performance MVHR system in a new build or renovated home in the UK, updated for 2022 prices. If you’re building or renovating to energy efficient, high comfort and healthy… Continue reading →

Air Quality, Airtightness, Energy, MVHR Full installation, How much does it cost to install an MVHR system?, HRV, UK

Completing my ATTMA Airtightness Testing Training for New Builds and Forensic Testing

10 August 2016Patrick Leave a comment
Intello membrane on a roof that HSL tested for airtightness forensic analysis

If you would like to learn more about what’s involved during a building airtightness test in the UK, please read on. If you have a new build project or renovated building which requires an airtightness test for any reason, please… Continue reading →

Airtightness, Building Regulations, Energy Air Permeability, Airtightness, Building Regulations, Heating, SAP, Testing

The relationship between Power and Energy – and what it has to do with your home

21 April 2016Patrick Leave a comment

When we talk about “low energy homes”, what are we really talking about? Well, when we’re trying to build low energy homes what we’re figuring out how to use the lowest amount of energy to heat the entire space in your home to… Continue reading →

Energy, Money, Sustainability Physics, Saving energy, Saving Money

A tough day for building physicists and environmentalists

15 April 2016Patrick Leave a comment
to those who will not have the benefit of two billion years' accumulated energy reserves - David Mackay

Today Professor David Mackay of the Department of Physics in Cambridge and former Chief Scientific Advisor to the UK Department of Energy and Climate Change (DECC) lost his battle with cancer. Professor Mackay was the reason a lot of my colleagues… Continue reading →

Energy, Sustainability Climate Change, DECC, Professor David Mackay

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