7 Considerations for MVHR Installation
Mechanical ventilation with heat recovery (MVHR) is an increasingly popular technology, and for good reason. It provides improved indoor air quality and lowers energy consumption related to heating - both of which are a priority in the world we live in today.
In this article, we cover the main considerations for MVHR installation, but first let's look at the basics of how MVHR works.
A Quick Look At MVHR Technology
You can find a more in depth explanation of MVHR and its benefits in our introduction to heat recovery ventilation, but to give context for what follows, here’s a brief overview of how these systems work.
MVHR is built around a central heat exchange unit, with several sets of ducts connected to it. The first set of ducts draw indoor air into the system and direct it to the heat exchange, where heat is recovered before the stale air is expelled outdoors.
Meanwhile, the second set of ducts pull outdoor air in, filter it, and send it to the heat exchange to pick up the recovered heat energy. This warmed air is then distributed around the property.
In short, a well designed MVHR system brings a constant supply of clean air while making use of otherwise wasted heat energy to increase its temperature.
So now we know what these systems do, let’s look at the design and installation process.
MVHR Design and Installation - Key Considerations
1. Determine if MVHR is Right for the Building
MVHR systems are only effective when installed in relatively airtight buildings. If the property in question is subject to unintentional air leakage, MVHR performance is significantly compromised, since heat energy will escape the building before it can be recovered.
The ideal approach is to build MVHR into a new property (which must comply with Building Regulation standards on airtightness), but it is perfectly possible to fit these systems into existing building.
If you are looking to retrofit, the first thing to do is get expert advice on how effective a solution MVHR will prove.
2. Look at Your Filtration Needs