Can MVHR Provide Cooling?

Can MVHR Provide Cooling?

Can MVHR Provide Cooling?

The need to have cooling mechanisms in the house, even in a cool and usually cold country like the UK, is important to have. Neglecting to have any cooling via ventilation could result in your house being affected by unaddressed humidity.

In this blog, we will answer the question ‘Can MVHR provide cooling?’

With new buildings being made to be as energy efficient as possible, and the UK aiming for 95% of its electricity usage to be low carbon by 2030, it is imperative to understand how we can make the most of our ventilation. This is where MVHR units come in.

To prevent mould, fresh air should constantly be introduced into your dwelling daily, as it helps to regulate temperature and reduce condensation. Introducing fresh air can be as simple as having a ventilation routine, or installing extractors or MVHR units. Almost all of this is facilitated by ducting.

I-Sells is here to provide the answers you need whilst also supplying you with all the information you need to combat mould and have a well-ventilated home.

What is MVHR?

MVHR stands for ‘Mechanical Ventilation with Heat Recovery’ the machines that supply this kind of ventilation can also be known as a ‘heat recovery system/unit.‘

A MVHR system is a type of ventilation system. It extracts indoor air, and replaces it with fresh outdoor air, with no loss in temperature. MVHR units are available in single or multi-room appliances.

The advantages of heat recovery systems are the following:

  • Holds all the benefits of an extractor, including the removal of stale air, humidity and smells.
  • It helps to prevent the cultivation of mould through the removal of humidity.
  • Temperature sensors ensure that additional heat is not being added to the atmosphere of the home if it is already hot.
  • Heat recovery systems take a lot of the burden from you conducting a ventilation routine. This is ideal for a vulnerable person.
  • Less of a need to use your central heating frequently as the heat generated through your house is recycled through the heat recovery unit.
  • The reduced use of heating as a result of the heat conservation granted by a heat recovery unit can help you save on energy bills.

Is MVHR the same as an extractor fan?

No, but they do partly share a similar characteristic, which is to extract the indoor air. Typical extractor fans start and stop at that level of function. Whereas, a MVHR unit will replace the indoor air with filtered air from outside without a loss of heat.

Extractor fans are commonly found in rooms where there is a high level of humidity frequently, this would be in bathrooms and kitchens. The removal of humidity helps to prevent the development of mould within the home.

Does MVHR prevent mould?

As part of a regular ventilation routine, MVHR can help the prevention of mould. That being said, MVHR can’t stop any non-humidity issues that cause mould, such as leaking pipes. Mould poses a threat to your health and should be treated immediately to prevent any developments with a mould allergy.

Can MVHR provide cooling?

Can MVHR provide cooling?

MVHR has the capacity to provide a limited level of cooling, depending on the temperature in your home. If the temperature in your home is beyond the level set by the MVHR system, it will bypass its heat retention. This is something that can frequently happen in summer months, as a result, most units have a ‘summer bypass’ feature. 

This can be handy in the hot summer months, as you are getting fresh outdoor air in your home whilst replacing the stuffy indoor air. MVHR units are not made specifically for cooling, as the name suggests, heat recovery is the primary objective of a MVHR system.

That being said, your MVHR system works to maintain a set level of warmth, if you regularly require cooling, you may need to reset the level of temperature you want in the home.

Can I cool a home without MVHR?

Yes, there are simple methods you can take to cool your home without MVHR. The most simple is by opening the windows of your home. You should open the windows at the front and back of your home, on each level (if you don’t live in a single floor home).

This allows the heat to be dispelled equally whilst creating a stream of air through your home. Be warned that in certain weather conditions, it has the capacity to make a strong draft that could slam doors.

Additionally, if you have any allergies such as hay fever, this method can unintentionally invite pollen into your home. The good news is that this method doesn’t have to be done for long, a minimum of at least 10-20 minutes depending on the level of cooling you require.

What is the cost of MVHR?

The cost of MVHR systems vary between the type of MVHR unit you need. Naturally, single-room units will cost less than whole-house units. Our range of MVHR units begin at £262, all the way to £2895.

Below we will share some information on our most cost-effective single room, and whole house units. You can click here to view our full range of MVHR units.

What is MVHR commissioning?

What is MVHR commissioning?

MVHR commissioning is the process of having your MVHR system tested to ensure it is balanced. A ‘balanced’ MVHR system is the term used for the system operating at the optimum level in accordance to the dwelling it is in.

This means that airflow is distributed evenly and not affecting the ventilation negatively. There is little to no noise and the system works efficiently. MVHR systems operate differently depending on the dwelling they are placed in, as well as the size of the rooms and more, which is why commissioning is required.

A further reason for MVHR commissioning is to ensure the system meets ‘part F’ of UK building regulations. ‘Part F’ is a regulation based on ventilation requirements to maintain indoor air quality.

All MVHR systems must be commissioned upon installation, excluding single-room units. If you don’t get your unit commissioned, you can suffer with the following issues…

  • The air travelling through the ducting is loud.
  • There is moisture in and around the ducting.
  • Some rooms still have humidity / condensation in them.
  • The system isn’t optimised for the dwelling.

Who does MVHR commissioning?

There are many certified MVHR commissioners in and around the UK. The easiest method is a simple internet search for any in your locality. Alternatively, the installer of your MVHR system may themselves have contacts that commission MVHR too, so asking them is the best way forward.

Do not get your MVHR system commissioned from anyone who is not BPEC certified, or holds any such relevant qualification. We at I-Sells deal with all things ventilation, so if you’re really struggling to find a verified MVHR commissioner, get in touch with us, and we will attempt to help you find one.

See how MVHR can help you today

See how MVHR can help you today

We at I-Sells endeavour to ensure our customers have all the information they require before investing in our mould solutions. Be sure to visit our blog page to learn about the vast array of factors and issues surrounding ventilation, mould, condensation, and much more.

We hope to have answered the question ‘Can MVHR provide cooling?’

We understand you may have more questions, do not hesitate to contact us for more information about whatever you need our help with. If you’d like to send us an email, click here. For other contact options, see below:

Call us on 020 8463 9696

Visit us at our showroom:


Monday – Friday: 8:00 am to 5:30 pm

Saturday: 9:00 am to 12:00 pm

Sunday: Closed

15 St John’s Parade

Sidcup, Kent

DA14 6ES

United Kingdom

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