Heat Recovery Ventilation System Cleaning

The efficient operation of a heat recovery ventilation (HRV) system depends on regular maintenance and professional cleaning.

Heat recovery ventilation (HRV) recovers heat from extracted air and uses it to warm incoming fresh air, improving energy efficiency while maintaining high indoor air quality.

Heat recovery ventilation (HRV) systems reduce heat loss and improve a building's energy efficiency. A properly maintained system can recover up to 95% of heat from extracted air, helping to reduce heating costs while maintaining a comfortable and stable indoor environment.

In addition, the incoming fresh air is continuously filtered, reducing the amount of dust, bacteria, viruses and other airborne contaminants. This helps maintain a cleaner, healthier and more comfortable indoor environment in both residential and commercial buildings.

Why do you need to clean?
recuperative
systems?

Air quality:

Dirty or contaminated heat recovery ventilation (HRV) systems can circulate dust, mould and other airborne contaminants that may affect indoor air quality and occupant health. Poor indoor air quality can contribute to fatigue, allergies, respiratory conditions, headaches and other long-term health problems. Homes with pets are particularly prone to increased contamination, as pet hair and dander can accumulate within the ventilation system. Without regular maintenance, bacteria, mould, fungi and even pests may develop inside the system.

System efficiency:

A clean heat recovery ventilation (HRV) system operates more efficiently, helping to reduce energy consumption and running costs. A poorly maintained system loses efficiency and may consume more electricity. In commercial buildings, catering establishments and other facilities, inadequate maintenance can also lead to persistent unpleasant odours that cannot be eliminated with air fresheners or fragrance oils.

Longevity:

Properly maintained and professionally serviced heat recovery ventilation (HRV) systems have a longer lifespan and require fewer repairs. Poorly maintained systems can also cause dark staining on ceilings and around air diffusers or ventilation grilles.

Heat Recovery
cleaning systems
frequency

Cleaning frequency depends on system usage, environmental conditions and the manufacturer's maintenance recommendations.

Coarse filters, which capture larger particles, should be cleaned or replaced every 3–6 months.

HEPA and fine filters should be replaced every 6–12 months. Always follow the manufacturer's maintenance recommendations, as replacement intervals may vary depending on the system model and environmental conditions.

The heat exchanger should be professionally cleaned every 12–24 months to maintain efficient heat recovery, minimise the risk of mould and bacterial growth, and ensure optimal system performance.

Ventilation ductwork should be professionally cleaned every 3–5 years. More frequent cleaning may be required in dusty environments or if you notice reduced system performance.

Fans, valves and other system components should be professionally cleaned every 12–24 months.

The entire heat recovery ventilation (HRV) system should be inspected by qualified specialists at least once a year. Regular inspections help identify potential issues early, preventing costly repairs and maintaining optimal system performance.

Regular professional cleaning and maintenance of heat recovery ventilation (HRV) systems are essential to ensure reliable operation, maximise energy efficiency and maintain healthy indoor air quality. Always follow the manufacturer's maintenance recommendations and, where necessary, use qualified specialists to ensure the system is serviced correctly.