Option 4
Positive Input Ventilation
with Heat Recovery (PIV-HR

PIV-HR solutions are a combination of PIV, dMEV and a heat recovery system too. If you like having your home warm, it’s worth investing in a PIV-HR. The system will recover upto 95% of the heat and put this back into your house. These systems are so efficient at recovering heat from the air extracted from your home, that you won’t require an integrated heater. This means it’s great for your pocket too – the energy it saves easily pays for the slightly higher initial cost of the system. Paying for itself entirely in just four years.
 

Effectiveness ratio

Mild problems  ✪✪✪✪✪
Severe problems  ✪✪✪✪✪