Top Tips to Designing a Good Ventilation System Part 2
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Following on from Part 1, this blog explains what makes a good ventilation system. A sign of a good ventilation system is that it’s unnoticeable. A perfectly designed ventilation system is quiet, energy efficient and provides the property and its occupants healthy, fresh air.

These tips will help you guarantee that specify the best ventilation system for your circumstances.

  1. Ductwork
  2. It is recommended to have duct runs as short as possible, as long and complicated ductwork is expensive and leads to increased noise levels and SFP of the system. Furthermore, it is important that ductwork is installed in accordance with Part F of the Building Regulations.

    Best practice would have the duct work installed in warm rooms, inside the property. Ceiling cavities and walls provide good routes for the ducting to take. If the ductwork has to go through a colder area such as a loft space, then it is important to have the ducting insulated so to prevent condensation and heat loss.

    It is also important to pay attention to the sound levels coming from the ducting. If the ducting is passing through living areas such as living rooms and bedrooms, then sound attenuation may be required so to avoid the system disturbing the occupants.

    When attaching your grille to the outside wall, it is important to ensure that there is 90% free air movement from the grille and the ducting remains clear of dust and debris. This guarantees that the fan or ventilation system operates at its optimal level and ventilates at the required levels outlined by Approved Document Part F of the Building Regulations.

  3. Air Circulation
  4. Having proper air circulation around the house is extremely important to the success of any ventilation system that you have. By ensuring that every wet room (toilet, bathroom, kitchen or en-suite) has extraction levels meeting Building Regulations and each living room (lounge, bedroom etc.) has a proper ventilation supply, you will guarantee that the air within the property remains at healthy levels at all times.

    Proper supply air removes the need to having to use windows to freshen up the air in the property; although it doesn’t prevent you from doing so. This is due to, the supply air continually freshening up the air within the habitable rooms; maintaining a fresh and comfortable indoor air environment.

  5. Maintenance
  6. By undertaking regular maintenance of your ventilation system or extractor fan, you guarantee the long-term, optimal performance for your system. Just changing the filters of your MVHR unit or dusting the ductwork for your extractor fan every 3-6 months helps to remove the dirt from the ventilation system.

    Ensuring that the ductwork, in particular, is clear of debris, you make sure your extractor fan is able to perform to the installed performance requirements of the Building Regulations.

    If you allow the dirt to build up, the extractor fan won’t be able to remove the moisture and airborne pollutants from the home, which can lead to mould and damp to build up, which has a knock effect on your health and the health of the fabric of the home.