Ventilation system servicing is recommended every year as dust and debris collects around motors, air valves, ducting and heat exchangers.
We offer a range of ventilation system services for all types of system including Heat Recovery, MEV, PIV and more.

As an independent, specialist contractor we have extensive experience working with and servicing a wide range of makes and models including Vent Axia, Nuaire, Titon, Envirovent, Greenwood Airvac, Zehnder, Vortice and more, so we will always be able to help.

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What is happening inside your heat recovery ventilation system as it works in your home?

Here is an example of what’s happening inside a Heat Recovery System as it moves air in and out of a home;

Both extracting and supplying air, a heat recovery system is recovering and reusing heat to temper incoming air and reduce heating demand in the winter.

Supply & Extract Air Filters

Air being drawn in from outside, whether from an urban or rural location will contain particles including pollen, dust and in high pollution areas NOx.

As air is drawn in it is passed through filters inside the unit which overtime become black and clogged

Inside Fan Unit

High volumes of air are passing through the unit – stale air from inside and replacement air from outside.

Inside the unit, dust and debris is being collected as air moves through, especially in and around the heat exchanger and on the fan blades.

In-Room Air Valves

The ventilation system is continually extracting from the wet rooms in the property. Grease, odours and other debris floating in the air is being drawn into the air valves which over time get clogged.

What is included in a Heat Recovery Service?

Our 5 Point Protect Plan for Heat Recovery targets the key areas of the system where dust and debris collect and that can begin to impact the airflow performance, and ultimately the quality of the air in your home.

Replace Filters

Filters are dealing with all of the air entering your home and filtering out the nasties before they reach your home – they get clogged quickly!!

Clean & Sanitise Air Valves

In every room of your property an air valve is extracting or supplying air -and collecting dust and debris in the process!

Clean & Sanitise Heat Exchanger

The heat cube is doing the job of recovering heat and helping reduce your heating bills. As air is passed through dust and debris can collect inside easily

Clean & Sanitise Fan Unit

Air passes through the unit, dirt is quickly collated around fan blades which can begin to impact performance.

Rebalance, Recommission & Record airflow

We want to leave your system working the best it can for your home and your family so will test all in room air valves and ensure the correct extract and supply rates are being achieved.

So, what is heat recovery ventilation anyway?

Here’s our 6 step explanation…


It’s a whole house ventilation system and if it’s installed it means your home has been built to ‘keep the heat in’.  This is all well and good, but the building and you need to breathe, and the heat recovery ventilation system is managing air in and out of the home to keep you comfortable and the air fresh and healthy


The heat recovery unit is usually located in the loft space (house) or in a cupboard (apartment). It’s on all of the time, running at a low level doing it’s job (and it’s uber efficient… keep reading)


It’s extracting moisture and pollutants from what is called the ‘wet rooms’ – bathroom, kitchen, utility, wc’s.  This air travels out of each room via a valve in the ceiling, though the ducting and heat recovery unit before it’s expelled to outside


At the same time as extracting, it is drawing in air from outside to provide supply air to what is called ‘habitable rooms’ – living rooms, bedrooms.  This air travels in through the ducting, passed through the heat recovery unit and then delivered via valves in the ceiling


All air coming into the home is filtered to remove dust, pollen etc (this is via filters inside the unit)


Here’s the energy efficient bit… Not only does it have efficient motors, so it doesn’t cost a lot to run per year, before the extracted air (point 3 above) is taken outside, the heat recovery system recovers the heat in the air, stores it and then adds it to the incoming air.  This means the air from outside which is being filtered is also being slightly warmed.  This helps reduce your heating bill in the winter! (and in the summer it turns itself off automatically, because you don’t need more warm air coming in)

You spend 90% of your time indoors and you breathe 10,000 litres of air everyday – indoor air quality is important in your home!


What are the benefits of an effective ventilation system? e.g Heat Recovery

Good Indoor Air Quality

Did you know? Reports suggest indoor air quality can be up to 50 times more polluted than indoor air.

A ventilation system is crucial in every home and especially in new energy efficient ones. It is extracting moisture and removing gases and particles floating around in the air like dust mites and VOC’s found in cleaning products and man-made furnishings, all of which contribute to poor indoor air quality which is bad for our health.