How do I change filters in my MVHR / HRV system?

MVHR systems (Mechanical Ventilation with Heat Recovery) and HRV systems (Heat Recovery Ventilation) need regular maintenance to make sure they are running as optimally as possible and to also prevent any issues and damage from occuring.

As well as having a professional service carried out on your MVHR / HRV system, it is crucially important to regularly check and replace the filters inside your system, as over time and with use they can become clogged and damaged.

So, how often should you replace your filters?

Well, that depends greatly on the environment in which your system is being used and where you live.

If you’re in an urban area, then your filters are going to need to be changed more regularly due to the poorer quality of the air and the fact that there are more contaminants for your MVHR filter to filter out.

Also if you live in a household with a number of pets, or with asthma or allergy sufferers, then you’ll need to replace your filters much sooner.

Generally speaking though, we would advise checking your MVHR / HRV system filters every 2 months, giving them a thorough clean and then look to replace them every 4-6 months or if you notice any wear.

How do I change MVHR filters myself?

Thankfully changing your air filters and fitting replacement filters is fairly easy and can be done yourself.

The finer details vary from brand to brand, but generally speaking it should only take a few minutes.

For obvious reasons it’s a good idea to grab your MVHR / HRV system manual, as that will contain specific instructions for your make and model, but here’s a general guide on how replace your filters:

IMPORTANT: Turn off and unplug your unit/system
Slide open the front doors / drawer, or unscrew the front panel (depending on your particular system).
Gently pull the existing filters from where they currently reside within the system.
Insert your new replacement air filters
Close the front doors / draw on your system, or screw the front panel back in place.
Turn the system back on and allow it to restart.
Finally, if your MVHR / HRV system has a digital control panel, you may need to reset the system.

And that’s all there is to it! Your system will now be back performing as optimally as possible.

Videos on how to change your filters

If you prefer to follow along to a video, then here’s a selection for the main MVHR system brands:

Are you looking to buy MVHR / HRV replacement filters?

Well you’re in the right place!

You’ll be pleased to know that we sell replacement filters for all the leading brands. From Nuaire replacement filters, to Vent Axia, Brink, Envirovent and more.

Take a look at the replacement MVHR filters section of our online shop and buy with confidence with our 30-day refund policy.

If you need any help selecting the correct replacement filters for your system, then give our friendly team a call or drop us an email using the form on our contact page.

Related Questions

If you still have questions relating to replacing your filters and your system itself, here are some of the most common we hear:

How often should my MVHR system be serviced?

We would recommend a full MVHR service once every 1 or 2 years.

How do I know when my filters need replacing?

If you hold the filter up to a light source and can’t see through it, it needs to be replaced. Additionally, it’s time to change if you’re beginning to get allergy symptoms.

Why do air filters need changing?

Your air filters become dirty for a number of reasons, including the level of pollution in your area, the number of occupants in the house, whether you have pets or kids, and the standard of the air filters themselves.

How often should you change filters?

It depends a great deal on environmental factors, but generally speaking you should replace your filters every 4-6 months. If you have several pets living in your home then this may change to every 2 months and if anyone living in the property suffers from allergies or asthma, then we recommend replacing your filters every month to ensure the cleanest levels of air within your home.

For more information, advice or to place an order contact us today by email or phone.

01747 897479 sales@filtersdirect.uk