Heat Recovery Ventilation



The principle behind a Heat Recovery Ventilation system is to change the air continuously in your home and use the recovered heat to warm the incoming air. Extract points are located in wet areas such as bathrooms, kitchen, utility and WC.

Supply points are in areas such as bedrooms, living and dining rooms. The fundamental part of the entire system is a high efficiency counter-flow heat exchanger. This heat exchanger transfers up to 90% of the heat from the extracted “wet areas” air to the incoming fresh air.

Your home will have a constant supply of fresh air, lower heating bills, no condensation and increased comfort levels with a HRV system.

Your home should be well insulated and well sealed for a HRV system to be efficient. This means that there will be minimum heat loss and that the air flow through the house can be controlled.

The size and volume of your home will determine what type of HRV unit will need to be installed. Larger homes may even need more that one unit to achieve optimum air changes.

Good ventilation is very important, but when the outside air temperature differs considerably from the indoor air temperature, ventilation results in a great deal of energy loss.

The key to heat recovery ventilation and the heat exchanger is that it enables and maximises the exchange of energy between the incoming and outgoing airflows before the energy dissipates in the atmosphere.

The heat exchanger is constructed completely from polystyrene - from the foils to the casing. Only solvent-free elastic adhesives are used.

The heat exchanger is made up of hundreds of these hot and cold triangular ducts, resulting in a large surface heat exchange area and extremely high efficiency of 90%

The triangular ducts in the heat exchanger are arranged so that each one is surrounded by parallel ducts in which the air is in counterflow. Each fresh-air duct is surrounded by three ducts filled with warmer exhaust air. Likewise, each duct with exhaust air is surrounded by three fresh-air ducts.

If you are looking for a full installation quote please email us a full set of plans (including sections)Please include as much information about your project as possible. In order to give you an accurate quote we will need to know the type of structure you are building i.e. timber/block/ICF and what space is available underneath concrete first floors. We will also need a contact number from you to discuss the project.

Email: click here to email us your plans for a full installation quote