• Whole House MVHR

    Whole House MVHR

We work with a number of high quality MVHR systems, mainly with PAUL and Zehnder. Almost all system we use are accredited with Passivhaus certification, which is a seal of quality and good system configuration, not just for Passive Houses, but for all types of projects.

The aim is to provide a system, which is:
A) silent or almost silent,
B) is energy efficient,
C) does not blow cold air into the dwelling in winter, but retains its efficiency throughout the seasons,
D) is hygienic and cleanable.

 

To compare the specification of these units, please see following table:

Specification PAUL focus 200 PAUL climos 200F PAUL novus 300/ 450 Zehnder CAQ 350/ 450/ 600
Maximum flow rate (in boost) 200 m3/h = 56 l/s 200 m3/h = 56 l/s 300 m3/h = 83 l/s
450 m3/h = 125 l/s
350 m3/h = 97 l/s
450 m3/h = 125 l/s
600 m3/h = 167 l/s
Heat recovery rate: PH | AppQ
(*with enthalpy heat exchanger)
91%
93-95%
84%*
N/A
N300: 93% (84%*)
92-93%
N450: 89%
N/A
90%
93-96%
El. power use:
PH / AppQ
0.31 Wh/m3
0.76 – 1.15 W/l/s
0.31 Wh/m3
N/A
0.24 Wh/m3
0.61-0.88 W/l/s
0.24 Wh/m3
0.53 – 1.03 W/l/s
Volume flow constant yes yes yes yes (stepped)
Summer bypass auto supply mode auto supply mode 100% bypass modulated 100% bypass
Frost protection pre-heater box (pulse controlled) integrated pre-heater
(pulse controlled)
integrated pre-heater
(pulse controlled)
integrated pre-heater
(pulse controlled)
Boost activation boost switches, weekly timer boost switches,
weekly timer
boost switches, weekly timer automatic
Silent operation *** **** ***** *****
Heat exchanger high performance enthalpy high performance or enthalpy high performance or enthalpy
Filters G4/ F7 M5/ F7 G4/ F7 G4/ F7
Controller TFT touch screen TFT touch screen TFT touch screen integrated, optional extra LED pad
Installation vertical (wall or floor) horizontal or vertical (ceiling or wall) vertical or horizontal (wall or floor) vertical (wall or floor)

 

Further Information