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Vitovent 300-C

Central mechanical ventilation

The Vitovent 300-C is a central mechanical ventilation system with heat recovery for convenient ventilation of living spaces up to 90 m².

Air flow rate: up to 150 m³/h
Heat recovery up to 89 %
Savings on energy costs
Compact ventilation unit

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Reduction of heating costs

Through heat recovery from the extract air

Heat recovery

Up to 89 %

Compact design

Ideal for ceiling/wall mounted installation in small houses and apartments

Ventilated living space

Approx. 65 to 90 m²

Low overall height

From only 19.8 cm

Protection of the building fabric

Plus good air quality thanks to adapted air change rate

Filtration of the outdoor air

Beneficial for allergy sufferers

Constant flow rate and balance control

Maintain a constant flow, independent of static pressure

Fast, simple adjustment of flow rates

Via the remote control

Integral preheating coil

For frost protection and efficient heat recovery all year round

Passive cooling function

Via integrated summer bypass

Space saving mechanical ventilation system for ceiling or wall mounting with heat recovery for modernisation projects

With the  Vitovent 300-C mechanical ventilation unit, Viessmann offers a solution that is particularly suitable for the controlled ventilation of apartments. Especially after implementing energy saving measures in a building and insulating exterior walls, the shell of the old building becomes more airtight and requires adequate ventilation to protect the building fabric. Otherwise, there is a risk of mould growth due to excessive humidity in the interior.

Product features

The  Vitovent 300-C impresses with its compact, slimline design. It can be concealed quite easily in suspended ceilings. For example in a hallway, where the ventilation ducts to the rooms on either side can also be installed. Vertical installation in a wall is equally possible, for example in a storeroom.

The unit's maximum air delivery of 150  m3/h is sufficient for ventilating interiors of between 65 and 90  m2 quite comfortably.

The  Vitovent 300-C ventilation unit utilises up to 89  percent of the latent heat in extract air, warming the cool outdoor air with the assistance of a cross-countercurrent heat exchanger. This saves energy and reduces heating costs all year round.

An automatic bypass circuit for the warmer months of the year is integrated as standard. Fresh, cool supply air can then be routed past the heat exchanger and directly into the interior, thereby achieving a passive cooling effect.

Although this compact unit already operates very quietly, additional insulation measures can be implemented depending on the intended installation site. Matching system accessories include a silenced distributor for integration into the unit as well as outdoor and exhaust air silencers.

The  Vitovent 300-C mechanical ventilation system also allows allergy sufferers to breathe more easily. A filtration system, featuring an optional pollen filter, cleans the supply air of allergens and noxious substances, thereby creating an irritant-free indoor environment.

High operating convenience

The following operating methods are possible for the Vitovent  300-C ventilation unit:

  1. Via the Vitotronic  200 (WO1C) heat pump control unit
  2. Via the ventilation programming unit, type LB1 (with convenient graphic display)

Product details

Air flow rate

Up to 150  m3/h

Energy efficiency class*

Time control: A | Central demand control: A | Control according to local demand: A | *In accordance with Commission Delegated Regulation (EU) No  1254/2014

Heat recovery

Up to 89  %

Application area

Apartments, living space up to approx. 90  m2 | New build and modernisation projects

Installation type

Wall or ceiling mounting

Additional features

The  Vitovent 300-W ventilation unit can be connected directly to the Vitotronic  200 control unit (WO1C) of the heat pump or operated via the ventilation programming unit, type LB1. Passive cooling by means of an automatic summer bypass. Integral preheating coil for frost protection and efficient heat recovery all year round. Certified according to the criteria of the Passive House Institute (PHI).

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