Air Distribution Systems

The Zehnder ComfoFresh air distribution system brings fresh air to all supply rooms and simultaneously removes moist or contaminated air and odors from extract rooms. Air is exchanged in all habitable rooms without drafts or bothersome noises, at the highest possible efficiency using the cascade distribution principle. Adjustable diffusers and damper inserts allow for fine adjustment of air volumes in each room when the system is commissioned. Supply and return air flows optimally through small ducts in walls and ceilings. Ducts are configured in a radial design connected to manifolds to ensure uniform system pressure.

Below are some of the key components in the air exchange system. After you “Request a Quote” through our website, a Zehnder America Technical Sales Representative will prepare a preliminary system design and a quote listing the specific components needed for each project to optimize performance.

Download Diffuser Options

COMFOPIPE DUCTING

Insulated Expanded PolyPropylene (EPP) ducting allows for easy installation of Outdoor Air and Exhaust Air ducts to the exterior grilles. ComfoPipe Compact is available in 1 meter-long (39″) straight sections, 45-degree bends and connection sleeves, all in three different sizes: 125mm (4.92″), 160mm (6.3″) and 200mm (7.88″) inside diameter. (See specifications for dimensioned drawings.)


Flexible air distribution pipe

INTERIOR DUCTING: COMFOTUBE

ComfoTube is flexible air distribution pipe, outside ribbed, inside smooth according to DIN EN 60529. The ComfoTube-75 can easily be laid in concrete, directly into the earth or in riser ducts and suspended ceilings. The Zehnder ComfoTube can be easily and quickly installed. Medical grade High Density Polypropylene (HDPE) provides clean, efficient delivery of air.Com


INTERIOR DUCTING: COMFOFLEX

ComfoFlex is 3″ reinforced flex duct with a Zehnder proprietary design to minimize turbulence and make connecting to Zehnder distribution components a snap. ComfoFlex is UL listed as a duct, meeting requirements for both flame spread and smoke development.

 


Silencer for air distribution systems by Zehnder

COMFOWELL SILENCER AND CASINGS

The flexible, multi-function design of the ComfoWell components allows for assembled combinations of a silencer, fine filter, activated carbon filters, and manifold. The components can be easily and securely coupled using sliding clips supplied.

 


Air Distribution Diffuser Box

RND-2T ROUND BOOT

The RND-2T Round Boot is used in combination with either the supply or return diffuser (Luna-S, Luna-E or Venezia grille). Each Boot fits within a 2X4 wall space, easily connects to ComfoTube or ComfoFlex ducting with our Twist Connectors, and mounts flush with ceiling or walls with no need to cut.


Air Distribution Diffuser Box

RND-3T ROUND BOOT

The RND-2T Round Boot is used in combination with either the supply or return diffuser (Luna-S, Luna-E or Venezia grille). Each Boot fits within a 2X4 wall space, easily connects to ComfoTube or ComfoFlex ducting with our Twist Connectors, and mounts flush with ceiling or walls with no need to cut.


Air Distribution Diffuser Box

RCT-2T RECTANGULAR BOOT

The Rectangle Boot is a supply or return register used in combination with the Roma grille. The Rectangle Boot fits within a 2X4 wall space, easily connects to ComfoTube or ComfoFlex ducting with our Twist Connectors, and mounts flush with walls with no need to cut.


Filter for Air Distribution Systems

FILTERS

Filters are available for each HRV or ERV in the Zehnder range, as well as for the ComfoWell Filter Casings. G4 Filters are an equivalent to a MERV 7-8 filter, while the F7 Filters are an equivalent to a MERV 13 filter. ComfoWell Casing filters are available in F9 (MERV 15) and activated carbon options.


Designer Grids for Air Distribution Systems

REGISTER COVERS

Zehnder provides attractive and discrete grilles for both the round RND-2T and -3T register boots and the rectangular RCT-2T register boots. The “Venezia” is a round grille, available in white (paintable). The “Roma” is a rectangular grille, available in white (paintable) and stainless steel. All grilles sit flush against the drywall when mounted onto the register box.


SUPPLY DIFFUSER: Luna-S

The Supply Diffuser is mounted in the diffuser box RND-2T or RND-3T, and provides even distribution of air in a 360-degree pattern, and is adjustable for flows during commissioning. 


EXTRACT DIFFUSER: Luna-E

The Extract Diffuser is mounted in the diffuser box RND-2T or RND-3T,  provides even extraction of air, and is adjustable for flows during commissioning.