Zehnder ComfoAir Q 350 Heat Recovery Unit

Zehnder ComfoAir Q350 MVHR Unit

Product Part Numbers:

• Zehnder ComfoAir Q350 – 471 502 015
• Zehnder ComfoAir Q350 with Pre-Heater (Right-Handed) – 471 502 016
• Zehnder ComfoAir Q350 with Pre-Heater (Left-Handed) – 471 502 017
• Zehnder ComfoAir Q350 with Enthalpy Exchanger – 471 502 018

The Zehnder ComfoAir Q350 is a top-tier MVHR unit, proudly manufactured in Germany to the highest Passive House standards. It is designed for high-performance energy-efficient homes , offering A+ energy efficiency and advanced heat recovery.

BPC Ventilation is the UK’s leading independent MVHR specialist, offering lifetime technical support on all our premium systems!

Key Features

Ideal for homes up to 220m²

Airflow rate @100Pa: 350m³/h

96% heat recovery efficiency

Integrated digital controller for easy operation

100% fully modulating summer bypass

Humidity boost sensor for automatic speed adjustment

Left- or right-hand configuration via software (standard version only)

Three model options: Standard, Heater, and Enthalpy

Smart commissioning wizard for easy setup

Flow control ensures stable airflow rates

Adaptive comfort technology for temperature optimization

Passive temperature boost in summer

Tool-free filter access for easy maintenance

ISO ePM1 >65% (F7) filter option

Interactive app for installer & end-user

Wireless commissioning & remote access options

KNX & BMS compatibility

0-10V input for advanced control

SAP Appendix Q & Passive House Certified

Smart Controllability & Connectivity

The ComfoAir Q350 features a built-in digital controller and supports multiple control options:

App Control (Optional) – Zehnder Comfo Connect LAN C

Control & monitor via the Comfo Control app (iOS & Android)

Adjust ventilation rate, temperature, high-speed settings & sensor thresholds

Monitor airflow rates, temperatures, & external sensors

7-day programmable schedule for energy savings

Remote access from anywhere

Service & maintenance alerts sent to your phone

App Control

With the Optional use of the Zehnder Comfo Connect LAN C enables the connection between the ventilation system and the Comfo Control app for iPhone and android devices.

Key Benefits

Control and monitor the ventilation system via the Comfo Control app

Control ventilation flow rate, temperature profile, temporary high-speed setting and external sensor set points

Monitor ventilation flow rates, temperatures and external sensors

7 - day flow rate programmer

Access the ventilation system remotely from anywhere in the world

Service and Maintenance alert direct to your phone

Wall Controllers (Optional)

Comfo Sense C67 – Digital 4-speed controller with system information display, compatible with wireless humidity & CO₂ sensors

Comfo Switch C67 – LED controller for speed adjustment & maintenance alerts

Comfo Control RFZ – 3-speed wireless controller (requires Comfo Sense C67 or RF-PCB)

Smart Home Integration & Sensors

Zehnder Option Box (Optional) – Expands system connectivity to external components:

0-10V inputs & volt-free contacts for advanced automation

Post-heater & sub-soil heat exchanger integration

Fire alarm & external filter alert integration

CO₂ & humidity sensors for demand-based speed control

Room Sensors for Demand Ventilation

CO₂ & Humidity Sensors (Optional) – Available in wireless or wired versions

Automatically boosts airflow when required

Works with Comfo Sense C67 or Option Box

KNX / BMS Control

Comfo Connect KNX C (Optional) – Seamless integration with KNX home automation

BMS integration for smart building control

RF-PCB (Optional) – Wireless Connectivity

Enables the Comfo Control RFZ controller to be used without Comfo Sense C67

Motors

Filtration & Air Quality

2x G4 filters (standard) – easy to replace

Optional F7 supply filter for enhanced air quality

Maintenance alerts indicate when filters need replacing

Summer By-Pass

The Zehnder Q range of units have a 100% summer by-Pass

Low Noise Levels

With airtight, aerodynamic and sound absorbing construction with perfectly balanced fans the noise levels are ultra quiet

Heat Exchanger

The Highest performing heat recovery exchanger that can recover up to 96% of otherwise lost heat

Frost Protection

The unit has a frost protection programme

Optional Pre Heater

The intelligent pre-heater adapts its operation taking into consideration temperature, air flow and humidity to ensure consistent supply air temperature is achieved no matter what is going on outside. Thanks to its large surface and delta shape, the level of pressure loss is negligible – and that also reduces the power consumption for the best possible energy efficiency

Orientation

The Standard unit can be changed from Left- or right-hand configuration through software alone, with no mechanical alteration or alternative configuration of unit is required

The Heater units can be right or left-handed and correct orientation should be checked before purchase

Mounting

The units are supplied with a wall mounting bracket and there is an optional floor stand

Warranty

Zehnder offer a 2-year warranty but can be extended to 6 years by registerable through Zehnder Website within 6 months of purchase (Homeowner registration | Zehnder Group UK)

Approvals

The Zender Q range units are passive house approved and SAP appendix Q listed

Accessories

Further Information

Further information is available on the Manufactures website