Zehnder | SKU: 471502019

Zehnder ComfoAir Q450 ST

£2,465.10

Tax included Shipping calculated at checkout.

Features:

Adaptive comfort technology.

Automatic passive temperature boost in summer.

Humidity boost continuously monitors the humidity level within the home and looks for a man-made spike before boosting the unit, irrespective of distance or dilution.

Tool free filter access.

Dwelling Size – up to 300m2

Delivery and Shipping

UK & Ireland* - Free

Channel Islands - POA - Contact office

Scottish Highlands - POA - Contact office

Europe - POA - Contact office

Rest of the World - POA - Contact office

Larger pallet based orders will incur charges please contact the office

*Postcode restrictions may apply

Zehnder ComfoAir Q450 ST

Zehnder

The Zehnder ComfoAir Q400 ST, with state of the art design and intelligent technology, regardless of whether you are working on a new build or an old building, with Zehnder comfortable ventilation you have an innovative, tried and tested complete system. It contains features such as its automatic modulating true summer by-pass, world class heat recovery efficiency and integrated humidity sensor to provide a comfortable, healthy and energy-efficient indoor climate.

Benefits

* World class 96% efficiency.
* 100% full and filtered modulating summer bypass.
* Commissioning wizard for a quick and simple set-up process.
* Flow control to maintain commissioned flow rates.
* Adaptive comfort technology.
* Automatic passive temperature boost in summer.
* Humidity boost continuously monitors the humidity level within the home and looks for a man-made spike before boosting the unit, irrespective of distance or dilution.
* Tool free filter access.
* ISO ePM1 65% (F7) filter option.

Payment & Security

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Heat Recovery Direct - Trusted Supplier of MVHR Systems & Airtightness Solutions Across the UK & Ireland

About Us

Based in County Fermanagh, we are a certified supplier and installer of high-performance MVHR (Mechanical Ventilation with Heat Recovery) systems, airtightness membranes, and airtight tapes for energy-efficient homes and buildings throughout the UK and Ireland.

With over 15 years of industry experience, we support self-builders, architects, contractors, and retrofit specialists with expert design, supply, and commissioning of heat recovery and airtightness systems. Whether you're working on a new build, deep retrofit, or passive house project, we help you achieve optimal energy performance, comfort, and compliance.

We Are

✔️ PassiveHaus Certified Installers
✔️ Elmhurst Energy Assessor Approved
✔️ NSEAI-Accredited Airtightness Specialists
✔️ Trusted by clients across Fermanagh, Belfast, Dublin, London, Manchester, and beyond

Our solutions are fully compliant with

📜 UK Building Regulations Part L
(Conservation of Fuel and Power)

📜 UK Part F (Ventilation)

📜 Irish Building Regulations Part L
(Conservation of Energy)

📜 Irish Technical Guidance Document F
(Ventilation)

We design and deliver complete MVHR kits and airtightness packages, backed by responsive customer support and nationwide delivery across the UK and Ireland.