It works by gently introducing fresh, filtered air into the dwelling. Air is drawn into the unit and is passed through filters before being pushed around the home – as the air moves, it creates a pressure as it dilutes, displaces and eventually replaces the stale air in the home.

As air is constantly moving, humid air cannot settle on cold surfaces, such as windows or outer walls, meaning it cannot condensate. Eventually, this humid air is forced out of natural leakage points throughout the home – such as windows, under doors or even through keyholes.

We installed our very first PIV unit in a bungalow in Sheringham on the North Norfolk Coast in 1981.

We recommend that your PIV system be installed by a trained professional. All installers at Dovedale Dampcure Services Ltd are not only qualified electricians, but crucially, are also experts in dampness and ventilation.

Nuaire provide a 7 year warranty on this product with the first 12 months part and labour. Dovedale, however, bolster the already great Nuaire warranty by covering the remaining 6 years with labour giving you a 7 year parts and labour warranty.

Absolutely not! Nuaire’s PIV units are designed to sit seamlessly within all property types, making very little noise and always providing the best quality air throughout your home.

The cost of running a Nuaire Drimaster Eco Heat HCS PIV (Positive Input Ventilation) unit per year depends on factors like energy prices, settings, and usage. Here’s an approximate breakdown based on typical usage:

1. Power Consumption:

• The Drimaster Eco Heat HCS has a low-power fan (around 2–4 watts in standard operation) and a heater that uses approximately 400 watts when active.

• The heater is thermostatically controlled, so it only runs when the incoming air temperature is below a set threshold.

2. Annual Energy Usage Estimate:

• Fan (always on):

• 24 hours/day × 365 days/year × 3 watts (average) = 26.3 kWh/year.

• Heater (estimated use):

• Assuming the heater runs for 2 hours/day during colder months (approx. 6 months),

400 watts × 2 hours/day × 180 days = 144 kWh/year.

Total Estimated Annual Energy Usage = 26.3 kWh + 144 kWh = ~170 kWh/year.

3. Cost Estimate:

• Multiply energy usage by the cost per kWh. For example:

• UK energy prices (Jan 2025): ~30p per kWh.

• 170 kWh × £0.30/kWh = £51/year.

Key Points:

• The fan’s energy use is minimal, but the heater increases costs in colder climates.

• You can lower costs by adjusting the heater’s thermostat or limiting its use.