Zehnder ComfoAir 550

Passivhaus-certified Zehnder MVHR unit designed specifically for large residential dwellings up to 210m2 .

For advice on which MVHR unit is best for your project, please contact our MVHR Design service

  • Designed specifically for large residential dwellings up to 210m2 (2010 Building Regulations)
  • Low energy consumption thanks to EC motors
  • Automatic 100% filtered bypass
  • High specification PCB featuring
  • 4 x 10v inputs for greater control
  • Input available for the connection of a post-heater which can be controlled without the need for a separate thermostat
  • Can be mounted either on the wall or free-standing on the optional assembly base
  • Suitable for use with the optional ComfoFond-L Eco sub-soil heat exchanger or ComfoCool custom designed cooling unit
  • Air flow rates of 71 – 293m3/h
  • Heat recovery efficiency of 84%
  • Electric power consumption at 100Pa of 0.29 Wh/m3
  • Maximum power consumption with pre-heater of 1051W
  • Airtightness and insulation
    • Internal leakage at 1.5%
    • External leakage at 1.9%

Acoustic data

The following sound power levels were determined at an air flow rate of 290 m3/h

dB(A) at unit dB(A) at intake dB(A) at supply dB(A) at extract dB(A) at exhaust
54.1 50.1 63.8 50.2 61.4
Title Type
GBS MVHR SYSTEMS & DESIGN BROCHURE November 2014 Brochure Download
Passivhaus certificate Zehnder ComfoAir-550 Certification Download
Zehnder-ComfoAir-550-datasheet Datasheets Download
ComfoAir 550 LUXE - Manual Care & maintenance Download
ComfoAir 550 LUXE - Installer Manual Care & maintenance Download



Affiliations & Accreditations