Zehnder ComfoAir 185 WM

Product Part Number: CA185WM-GB

High-Performance MVHR Unit for Homes up to 150m²

The Zehnder ComfoAir 185 WM is a wall-mounted Mechanical Ventilation with Heat Recovery (MVHR) unit, engineered in Germany to the highest standards. It ensures efficient heat recovery, quiet operation, and improved indoor air quality for properties up to 150m².

Key Features:

Airflow Rate @100Pa: 285m³/h
92% Heat Recovery Efficiency – Retains warmth while ventilating your home
100% Full & Filtered Modulating Summer Bypass – Maintains energy efficiency year-round
Integral Humidity Sensor – Auto-adjusts speed based on humidity levels
Specific Fan Power (SFP) as Low as 0.57 W/(L·s) – Ultra-efficient operation
Left or Right-Hand Configuration – Software-adjustable, no mechanical changes needed
100% Variable AUX Speed – Allows way mode, medium speed, or purge boost
BMS Compatibility – Smart integration via optional system
Volt-Free Contact – Provides flexibility for control integration
Adaptive Comfort Technology – Enhances indoor air quality dynamically
G3 Filtration – High-quality filtration to remove airborne particles
Tool-Free Filter Access – Easy maintenance and filter replacement
SAP Appendix Q Listed – Certified for energy efficiency

Flexible Control Options

The Zehnder ComfoAir units have an optional selection of boost switches and room sensors for demand controller ventilation

Inputs

• Volt free contact boost capability.
• 240v switched live capability

Wall Controllers (Optional)

Zehnder ZGRC1 – 2-speed controller with system notifications

Key Benefits:
Choose from 2 ventilation speeds
Summer bypass indicator
Frost protection indicator
Service & maintenance alerts
Auto-revert to low speed after preset time to prevent unnecessary energy use

Zehnder ZGS1 – 3-position switch for manually adjusting ventilation flow rates

Zehnder ZGS2 – 2-position switch for basic manual speed control

Advanced Room Sensors for Intelligent Airflow Control

Zehnder AQR – Air quality sensor detecting pollutants (CO, methane, ethanol, etc.)
Auto-triggers higher airflow when poor air quality is detected
Adjustable overrun timer (2-40 minutes)

Zehnder PIRR – Passive Infrared Motion Sensor
Detects movement up to 7 meters
Auto-boosts airflow when motion is detected
Adjustable overrun timer (2-40 minutes)

Zehnder HHR – Humidity Sensor
Adjustable activation (30-90% RH)
Overrun timer (2-40 minutes)

Zehnder THR – Temperature Sensor
Activation range (5-35°C)
Fixed 2-minute overrun timer

BMS Control

BMS integration is possible

Integral Humidity Sensor

The integral humidity sensor increases speed in proportion to relative humidity levels, saving energy and reducing noise.

Installation & Construction

Wall Bracket Included – Hassle-free installation
EPP Construction – Sturdy plastic outer covers for durability
Pod Wall/Cupboard Mounting Option – Ideal for secure fixing in modular home setups

Motors

Quality EC motors

Efficient Filtration & Performance

2 x G3 Filters – Easy to replace & maintain

100% Summer Bypass – Enhances efficiency in warm weather

Frost Protection Program – Prevents freezing in low temperatures

Low Noise Levels – Designed for quiet operation

Heat Exchanger

Frost Protection

The unit has a frost protection programme

Orientation

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

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 range units are SAP appendix Q listed

Accessories

Further Information

Further information is available on the Manufactures website