Hydronic Heating & Cooling Specialists
Plumbing Services

Mechanical Ventilation with Heat Recovery

MVHR systems extract stale air from wet rooms, supply fresh filtered air to living spaces, and recover up to 90% of the heat in the process. Essential for tight-built modern homes.

Modern Australian homes are increasingly airtight — which is great for energy efficiency but bad for air quality. CO2, humidity, VOCs from furniture and cleaning products, and cooking moisture all build up.

MVHR (Mechanical Ventilation with Heat Recovery) extracts stale air from kitchens and bathrooms, passes it through a heat exchanger that captures up to 90% of the thermal energy, and uses that energy to pre-warm or pre-cool incoming fresh air from outside.

Key benefits

  • Up to 90% heat recovery efficiency
  • F7+ filtration (pollen, PM2.5)
  • Quiet — under 25dB at the diffuser
  • BAL-rated bushfire compliance available
  • Pairs with hydronic heating/cooling
  • Critical for Passivhaus builds
FAQs

Common questions

Do I need MVHR for my home?

Essential for tight-built modern homes — Passivhaus, certified high-performance builds, and any home with a high-quality envelope. Older draughty homes don't need it. We'll assess your home's airtightness before recommending.

How much energy does MVHR save?

Up to 90% of the heat in extracted stale air is recovered and used to pre-heat incoming fresh air. In a tight, well-insulated home this can cut total heating energy by 15–25% compared to natural ventilation losses.

What about pollen and bushfire smoke?

MVHR units include F7 + G4 dual filtration that removes pollen, dust and most particulate matter. Bushfire-rated (BAL) options seal external air during smoke events. We've installed many for asthma sufferers and clients in bushfire-prone areas.