Domestic Mechanical Ventilation with Heat Recovery (MVHR)

January 15, 2021
The benefits of ventilation in homes during the current climate cannot be over emphasised now that the demand is greater to provide good air quality and save energy creating a more healthy environment. As a result, MVHR systems are increasingly being incorporated in the design of new dwellings.

MVHR systems are designed to filter incoming air, removing contaminants, after which it then passes through a heat exchanger to be heated by extracted moist air from bathrooms, showers and kitchens.  The fresh filtered warm air is then distributed to various parts of the dwelling to supplement the main heating system. During the summer months the incoming air will be diverted past the heat exchanger to give ambient temperature fresh air and provide a degree of cooling.

The system will continue to work satisfactorily if it has been installed and maintained correctly. If no servicing has been carried out, mould growth could occur in the MVHR unit and connected ductwork which, in the long term, could create health problems such as asthma. It is vital, in order for the system to work efficiently and safely, that regular servicing is carried out approximately every 6 months - this includes replacing/cleaning filters and checking the condition of the heat exchanger and other components. 

We will be happy to carry out an inspection of your MVHR system to check its' installation and complete a service, if required.


Essential Commercial Kitchen Maintenance

June 7, 2013
Ignoring the maintenance of your restaurant exhaust fan, exhaust hood and any kitchen exhaust vent cannot only lead to danger of a devastating fire but could be very costly in terms of loss of trade should any of the equipment fail, due to lack of periodical maintenance.

The cost of a new exhaust system is on a par with the cost of a new mid range car.  To run efficiently, a car must be serviced regularly, so it makes sense to maintain the servicing of a kitchen exhaust and supply system.

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Are the carbon dioxide (CO2) levels in your kitchens breaking the law?

March 5, 2013
British Standard 6173 is relevant to commercial catering installations and is not intended to apply to domestic dwellings including bed & breakfast installations, for which British Standard 6172 and 5440-2 normally apply. However, some premises may border on commercial activities due to their high cooking loads and this needs to be taken into consideration when deciding on the most appropriate British Standards to apply.

What is important is how often the kitchen is used and how much and what ...

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Are your Ventilation Systems performing efficiently?

January 23, 2013

Ventilation Systems should be checked at least annually to determine that the ductwork is clean and does not leak, that the fans are working correctly and are in good condition, the filters are serviceable and that fire and smoke dampers are set correctly and are functioning well.

Depending on local air quality, filters can become blocked quite quickly which causes fans to consume more power and reduce their service life considerably, as well as increasing running costs.

Expert Air can maintain...
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Expert Air Limited, Newtown, Kington Magna, Gillingham, Dorset, SP8 5EU  |  01747 839758 or 07966 535810  |