What Is Heat Recovery?

Heat recovery is the process by which incoming cool supply air is continuously preheated by warming it with the outgoing exhaust air. Warm air is not simply exhausted through an open window, but will transfer the majority of its heat to supply air in a heat recovery exchanger that is highly efficient, before it is exhausted. Because the heat is radiated through the exchanger’s plates, at no point will the airstreams mix.

Stale air is full of contaminants such as toxins, humidity and smells emanating from the kitchen, toilet and bathroom. Outlet grilles in toilets and wet room areas such as bathrooms, en-suites, kitchens and utility rooms allow for the extraction of a demand oriented or constant volume of air flow. On the other hand, fresh air is directly fed from outside through a filter and into the ventilation system. The heat derived from the extracted air is used in warming the fresh filtered air in the exchanger and thereafter flow through ducting. By fitting transfer grilles and undercutting doors, you are able to ensure circulation of fresh air throughout the home.

Many ventilation units today are directly fitted with heat recovery exchangers. This enables the utilisation of heat recovery in all types of buildings with mandatory ventilation including family houses and apartments, commercial buildings, industrial buildings, as well as swimming pools. Heat recovery has gained popularity in residential dwellings in recent times, mainly due to the increase in energy prices. Heat recovery exchangers may also be utilised in air-conditioned buildings, serving as cold recovery during the summer months, where supplied warm air is cooled by the air-conditioned air of the exhaust.

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Benefits of Heat Recovery:

  • Saves energy through the reduction of heating costs
  • Removes airborne pollutants that may cause allergies and asthma
  • Constantly refreshes the internal atmosphere
  • Eliminates condensation and humidity
  • Supplies warm, filtered air to living areas

Importance of Heat Recovery

With the constantly rising energy prices, the need to conserve power and heat has led to higher levels of air tightness and insulation in residential homes and commercial buildings. The resulting deterioration of indoor climate may lead to health problems for occupants and their visitors, while also causing long term damage to the fabric of the building.

Changes to methods of modern construction, as well as building regulations demand greater levels of air tightness, making ventilation much more important today than it ever was before. A ventilation system with heat recovery that incorporates the latest knowledge in the field of indoor air quality and energy efficiency is likely to be popular with builders, designers, architects, as well as homeowners who support healthy, low-energy living.

In order to enjoy a healthy home, you will require thousands of litres of fresh air daily, to compensate for the moisture that every individual generates, as well as from cooking, bathing and washing. In order to achieve these levels of fresh air input, you will require a mechanical ventilation heat recovery unit, as this offers the perfect solution for the creation of a healthier living environment. When selecting the perfect heat recovery exchanger for your building, be sure to go for a model that will enable you to reduce the carbon footprint of your dwelling, while simultaneously meeting building regulations.

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