Over recent years homes have become more energy efficient and heat preserving with increased standards of insulation and airtightness within their fixtures. However this can have an effect on your air quality and natural ventilation. When you don’t have that fresh air stream it can have a negative impact on your health. We’ve put together a beginners guide to Mechanical Ventilation Heat Recovery (MVHR) to help you understand how these systems work. As well as how they can improve the air quality within your household. 

What is Mechanical Ventilation Heat Recovery (MVHR)? 

Mechanical ventilation Heat Recovery (MVHR) is the only form of ventilation that cuts out the majority of the ventilation heat losses. It works by extracting the stale air from the rooms in your home and replaces it with fresh and filtered outdoor air while a significant amount of energy which heats the house is recovered and transferred again to your rooms. These are especially useful with wet areas such as kitchens and bathrooms. As the systems are designed to permanently remove moist air on a trickle basis whilst distributing clean air at a balanced rate. Typically, heat recovery systems recover about 73-95% of the heat in exhaust air. 

Why do you need the ventilation MVHR provides- 

• It prevents excess levels of humidity which can contribute to a build up of condensation and mould.
• If the air quality in your home has become a problem, especially for those who suffer with hayfever, MVHR systems can reduce pollen levels, as well as rural and industrial smells. 
• Is your home near somewhere that creates a lot of noise pollution such as an airport or busy roads? Well MVHR systems enable you to get fresh air into your home and provide adequate ventilation without the need to open windows. 

When people might want to install MVHR- 

• During a full house renovation or new build process
• When they need a whole house ventilation solution 
• They want to make their home more energy efficient
• They want to reduce the costs of their energy bills

How Mechanical Ventilation Heat Recovery works

They are usually made up of two fans. One that pushes fresh air through the heat exchanger and another fan which pulls the wet stale air through a different circuit. 

Traditional ventilation systems let air in at the outside temperature during operation. This means that you lose the warmth that you have paid for. Whereas heat recovery ventilation ensures that the comfortable temperature in your home remains whilst extracting laden air. 

MVHR systems are usually quite substantial in size. This is because the air they extract needs space to move efficiently, which helps quiet operation. So before installation you need to consider if you can easily access it for when you need to complete maintenance. 

At Ramki we professionally install mechanical ventilation heat recovery that are designed to your property’s requirements. We are committed to providing homeowners in the local community with quality ventilation systems which help your home, health and comfort levels. Contact us today for more information on 020 8813 4000.

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