Woman relaxing on sofa

Improve Air Quality with Home Ventilation

Like lungs, homes need to breathe and its air supply should be regularly circulated. Home ventilation systems work to replace the stale air within your home with a supply of fresh air from outside, creating a healthier indoor environment. Without this kind of ventilation, the air in your home is likely to become damp and unpleasant, leading to increased condensation and mould.

 

Home Ventilation Systems also prevent the build-up of airborne pollutants and can even reduce the spread of airborne viruses. Installing these systems within your home can help to increase indoor air quality and eliminate the cause of condensation.

Arrange a Free Site Survey

One of our friendly team will visit your premises to determine the best suited unit for your space

Positive Input Ventilation by Nuaire

Positive Input Ventilation (PIV) is a method created by market leaders, Nuaire, used to ventilate homes with a single system installed in the loft. It uses proven technology to draw in fresh air from outside which is then filtered to remove harmful pathogens before being fed into the home via a ceiling mounted diffuser. As the fresh air circulates, it pressurises the home which in turn, expels excess moisture along with allergens and other pollutants.

Energy efficient
Requires minimal effort to maintain
Improves air quality inside your home

Positive Input Ventilation systems are quick, easy to install, and cost effective, making them an ideal solution for your home. 

diagram of how Nuaire home ventilation works
Nuaire logo

Trusted Nuaire Installers in Bristol

Good air conditioning keeps your home or workplace at the right temperature. Good ventilation keeps the air itself fresh, dry and healthy. That’s why we install Nuaire, one of the UK’s most respected ventilation manufacturers, alongside our air conditioning systems.

Mechanical Ventilation with Heat Recovery

MVHR Ventilation Diagram of home

Mechanical Ventilation with Heat Recovery (MVHR) is a whole-home system that keeps a constant exchange of air flowing through your property. Stale, damp air is drawn out of rooms such as kitchens, bathrooms and utility rooms, while fresh air from outside is filtered and delivered to bedrooms and living areas. At the centre of the system is a Nuaire MRXBOX unit. Inside it, the warmth from the outgoing air is captured and passed to the incoming air, so your home is ventilated without the heat you’ve paid for being lost.

Recovers heat that would otherwise escape
Supplies filtered fresh air to every room
Keeps humidity under control all year round

MVHR systems are a smart long-term investment for new builds, extensions and major renovations, creating a comfortable, energy efficient home from day one.

Benefits of Indoor Ventilation

Low Humidity Levels

Both PIV and MVHR systems keep moisture levels in your home under control. This stops condensation forming on windows and walls and prevents the damp conditions that mould needs to grow.

Health Benefits

Filtered fresh air helps reduce dust, pollen and other airborne pollutants in your home. This can make a real difference for anyone who suffers from allergies, asthma or other respiratory problems.

Lowers the Cost of Energy Bills

A dry home heats up more quickly than a damp one, so your heating doesn't have to work as hard. MVHR systems go a step further by reusing warmth from outgoing air to heat the fresh air coming in.

Protects Your Property

Excess moisture can damage paintwork, plaster, window frames and furnishings over time. Good ventilation helps protect your home from the costly effects of damp.

Fresh Air All Year Round

Enjoy a constant supply of fresh air without having to open windows. This keeps out cold draughts, outside noise and pollen, and means your home stays secure.

Quiet & Low Maintenance

Nuaire systems run quietly in the background, so most people soon forget they are there. Beyond a simple filter change from time to time, they need very little upkeep.

PIV vs MVHR: Which is Right for your Home?

PIVMVHR
How it worksPushes filtered fresh air into your home, moving stale air outSwaps stale air for fresh, filtered air in every room
Where it's fittedSingle unit in the loft, or on a wall in flatsCentral unit with ducts running to each room
Heat recoveryNoYes, warmth is reused to heat incoming air
InstallationQuick, usually completed in a dayMore involved, best planned into building work
Cost to installLowerHigher, with long-term energy savings
Best suited toExisting homes, older properties and rentalsNew builds, extensions and major renovations
Tackles condensation and mouldYesYes

Still not sure which system is best for you? One of our friendly team can visit your home, take a look at your property and recommend the right solution.

Our Home Ventilation Installation Process

1. Contact

After requesting a callback or contacting us, one of our friendly team will talk you through your options and recommend a unit based on your initial requirements.

2. Attendance

One of our engineers will visit your premises to assess the site and ensure it is suitable for the home ventilation unit.

3. Quote

At this point, we provide you with a free, no-obligation quotation.

4. Installation

Following acceptance of the quote, our installation team will attend your premises and install the home ventilation unit.

Our Testimonials

Kind words from our satisfied customers

EXCELLENT
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Based on 185 reviews
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sara edwards
29 September 2026
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5 star from start to finish! Do not hesitate to get Bristol AC in! They were friendly, professional and experts from the start. Tried a couple of national AC companies before I found these guys and so glad I waited, they have nothing on Bristol AC. Great job on the install by Robbie and Russ as well as super support from the rest of the team in the site survey all the way through to payment.
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mircea-sorin pavel
23 September 2026
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I’ve had air conditioning system fitted by Robbie and Ross from Bristol air conditioning ltd. The lads have done a great job, very polite and helpful. Truly recommend this company.
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myfi williams
21 August 2026
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Faultless. Richard was great and the job was completed quicker than I expected. Everything was explained well to me. Would definitely recommend!
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Beth Jenkins
14 August 2026
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Had our air conditioning fitted Wednesday by Bristol Air Con - superb service, Jake, Jack and Jack were excellent, and did a great job!
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Matt nolan
13 August 2026
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Just had an AC system installed at home by Bristol Air Conditioning and very happy and impressed by the whole process. When I initially looked into getting a home AC system, there was a lot of conflicting information and advice. As soon as Jason visited our house I was impressed by his knowledge, ideas, and honesty. He came up with ideas that minimised external trunking runs(which I was concerned about) and the best system to suit our needs. We have ended up with two wall mounted units, and two floor mounted units which work extremely well. The fitting crew were brilliant and friendly, and did an excellent job of the installation leaving all rooms clean and tidy. Overall very impressed, and would highly recommend.
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Lorraine Hill
12 August 2026
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These guys were great. Very helpful and professional. From survey to installation everything went perfectly. Really pleased and would definitely recommend.
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Anne Lane
7 August 2026
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Very professional came on time specified cleaned up as they went made sure everything was in working order would definitely recommend to put air conditioning in very happy with the job
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Rob
21 July 2026
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Finally found the right firm for AirCon install. After years of looking, researching and receiving quotes from a number of companies, we eventually found Jason and the team. And I’m so glad we did. From the moment I met Jason to the hand over, his team have been excellent to work with. Professional, friendly and knowledgeable throughout, the team respected our home and fitted a brilliant Airzone Ducted system which is keeping us cool. Thank you, highly recommended.
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Clive Birnie
3 July 2026
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Faultless service. Great guys. Made the install a clean and efficient process followed by a thorough briefing on operation of the unit. Would recommend.
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Richard Burden
23 June 2026
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Had a really good experience with Bristol Air Conditioning, from initial emails with Jason, to the install by Rich and Jack. Both guys were friendly and communicated well about the minor modifications to the initial proposal due to the nature of my property. Install was completed by the time estimate given on the day. Really pleased with the neat install of the indoor unit (no trunking visible internally) and hugely impressed by the power and quiet operation of the indoor unit, that is managing to have a cooling affect throughout the house, despite being on the top floor. Would recommend them to others.
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Farida Faouri
15 June 2026
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In my job I deal with so many various contractors every single day, but I have to say Bristol Air Conditioning are the most professional company I have ever dealt with. The owner who quoted me for the job was friendly and approachable, and then Richard who fitted my unit was also so helpful and patient with instructions how to use and maintain my aircon. I highly recommend them to anyone!
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Ajay Mehta
28 May 2026
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The two engineers installing the air conditioning were friendly, knowledgeable and did a great job. The AC is working perfectly and has made a massive difference to our loft bedroom. Would use again
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Gillian Edbrooke
13 May 2026
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What a great service. The team that came to install were lovely. Fantastic service, fantastic team and we are so pleased. If you are thinking about air conditioning you won’t find a better company.
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JGW911
13 May 2026
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Excellent experience with Bristol Air Conditioning. Initial system design and layout by Jason was very good, minimising trunking on internal walls (unlike our other quote). Price was competitive for good quality units. Luke and Jack were brilliant on the two installation days - turned up when they said they would, worked very efficiently and tidily, explained the system controls to me after it was up and running. The end result is excellent and looks extremely professional. As of early May we’ve already used it to cool a little but this week with some unseasonably low temperatures we’ve also used the lounge unit to provide some warmth first thing in the morning. The system is incredibly responsive. Looking forward to using it when we have our first summer heatwave of 2026!
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Caitlin Burton
9 May 2026
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They were fab. Very professional and installed our air con over just a few days. All the engineers were very friendly and happy to explain what they were doing/how to use the system etc. Overall I highly recommend BAC if you are looking to have air con installed in your property! Our house is so cool now!
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nullscott
8 May 2026
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Had my house fitted with air conditioning by Rich and his team, couldn't be happier with the result. Even with supplier issues they still managed to complete the work in under two days. Highly recommend them to anyone looking for a professional installation.
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Matt Gates
25 April 2026
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From start to finish Jason, Luke, Jake and Jack were professional and fantastic. Very happy, 5 stars and thank you.
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ian simpson profile picture
ian simpson
19 April 2026
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Bristol Air Conditioning came to me as recommended by a work colleague. There service was 5 star, from first contact to shaking Rich’s hand as he left after installation. Jason came to conduct the survey and not a WhatsApp/ FaceTime video call as others. There was zero hard sell and was totally accommodating, his BAC quote was very competitive. I had two units fitted in two bedrooms, this took two days and Rich was very efficient and helpful as was the rest of the team that supported the instal. As summers get warmer, and you start to think about AC in the house, there is only one place to go to Bristol Air Conditioning. Thank you.
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Dan Garty
7 April 2026
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Excellent service from these guys, overcame obstacles with professionalism and provided options, with no pressure. Wish all companies were like this to deal with, special call out to Jason for managing to source the unit where other companies couldn't and the install engineers (think his name was Luke), very tidy work and genuine nice guy. If you are on the fence looking for a professional, competitive, reliable company, Bristol Air Con/ Gas Safe are fantastic and I highly recommend them
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David Matthews
26 February 2026
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What a pleasure doing business with this company; from the initial quotation and visit by Jason to the admin by Leannne and the fitting by Tom and Jack. Extremely clean and professional workers and a company who I would thoroughly recommend to anyone. The kit ((Mitsubishi) is amazing and has already made as difference in the hour since it has been commissioned. Thank you for a job well done.

FAQs

Yes. Home ventilation systems reduce humidity in your home which help to prevent the build up of condensation and mould.

PIV units make very little noise in operation and should not be heard due to their placement in the loft.

Yes. Home ventilation systems provide fresh air to the home which expels moisture and pollutants.

Yes, in many cases. MVHR is easiest to install during a new build or renovation, but it can be fitted in existing homes where there is space to run the ductwork. We’ll let you know what’s possible during your free site survey.

No. Nuaire MVHR units include a summer bypass, which lets fresh air into your home without warming it. This helps keep your home comfortable on hotter days.

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