How to make a garage ventilation

Each owner of the car seeks to ensure that his “iron horse” retains all its remarkable qualities and excellent appearance for as long as possible. Almost all motorists rightly believe that storing a car in the garage will significantly extend his “life”. If the garage is improperly constructed (absence or poor ventilation), corrosion can appear on the car body - initially in places where the paint is damaged, but later this insidious process begins to spread rapidly. To prevent this, consider how to properly make the ventilation of the garage. First of all, you should understand the basic functions of ventilation.

Functions

1. Removal of water vapor, which inevitably forms due to the ingress of snow, dirt, raindrops into the garage with the car.
2. Removing from the garage of harmful gases and vapors.
3. Drying the body of a wet car (after using it in rain or snow).
4. Timely removal of condensate formed on the ceiling and walls of the garage ensures the safety of the structural elements of the garage.
5. Drying of the inspection pit and cellar (if available).

Kinds

For the organization of ventilation systems in garages use the following main types of systems:

• natural;
• combined;
• mechanical.

Let us consider in more detail their principle of action.

Natural ventilation system

It is the easiest and cheapest way to ventilate the garage. Because of this, many garage owners opt for just such a system.

The inflow of air into the garage is ensured by the inlet openings on the side of the gate (at the bottom), protected by a grill or blind. The flow of fresh air, passing along the car and under its bottom, is mixed with the internal air and is removed from the garage through an exhaust device - a deflector. The deflector is installed on the roof directly above the exhaust duct mounted on the side opposite to the gate. For reliable operation of this ventilation system, it is necessary to ensure that an air duct made of tin or an asbestos pipe rises 50 cm above the roof and insulate it to prevent condensation from accumulating.

Air circulation is ensured by the difference in the densities of the outside and exhaust air, as well as by the effect of the wind. In the case when the natural ventilation system does not cope, then you can use the exhaust ventilation of the combined type.

Combined exhaust ventilation

This system combines the natural (inlet) and mechanical (exhaust) parts of the ventilation system. To organize the forced outflow of air from the garage into the outlet duct, an electric fan is installed. While the fan is running, exhaust air from the garage is pushed into the atmosphere, freeing up space for fresh air flowing naturally through the intake pipe.

When choosing a fan, in addition to quality characteristics, you should consider the power consumption (preferably about 100 W) and continuous operation. If necessary, the system is equipped with a time relay. The disadvantages of this system include the overcooling of the garage during the winter period and the lack of filtration of incoming air.

Mechanical

In this case, the inflow and removal of air is carried out by separate subsystems (supply and exhaust), which allows to get rid of the drawbacks characteristic of the already listed options.

Supply subsystem. It consists of a filter (for filtering the incoming air), an electric air heater necessary for heating the air, and a fan.

Exhaust subsystem. It consists of an axial fan, in addition to which a duct fan with an air duct can be used.

When organizing mechanical ventilation can be used:

• Modular design. It involves the installation of separate, operating independently of the blocks for the organization of the inflow and exhaust air. They are combined into one system using special sensors.

• Monoblock. It is the only unit performing the functions of inflow and exhaust. The most effective are monoblocks, equipped with plate heat exchangers, allowing to reduce the energy consumption for heating the incoming air.

Which one to choose

It is important to determine the appearance of the ventilation system at the design stage of the garage in order to fit it correctly into the overall layout of the garage and eliminate the occurrence of unnecessary alterations.

It is recommended to install high-quality grilles or blinds on the ventilation holes. In addition to protecting the garage from debris, vandals and rodents, this will allow changing the flow area.

A mechanical ventilation system is best suited for heated garages, and a natural ventilation system is best for unheated ones. For underground garages used exclusively mechanical ventilation system.

Proper ventilation in the garage will maintain the optimum level of humidity due to air exchange, create a normal microclimate and keep your car in its original state. 

Video

This can be homemade ventilation in the garage: