Beating Condensation: PIV Systems vs. Extractor Fans for South Devon Homes
Condensation and damp are common problems in many South Devon homes — particularly in older or well-insulated properties where airflow is limited. If you’ve noticed misted windows, musty smells or black mould patches, it might be time to look at your home’s ventilation.
At BVEC Electrical, we’re often asked: “Should I install a PIV system or stick with extractor fans?” Here’s a breakdown to help you decide what’s right for your property.
What is a PIV system?
PIV (Positive Input Ventilation) systems work by drawing in filtered, fresh air — usually from your loft — and gently pushing it into your home. This steady airflow forces out damp, stale air through natural gaps and vents.
They’re especially effective in:
Homes with recurring condensation or mould problems
Properties without adequate extractor fans
Flats and bungalows where airflow is poor
Rental properties where tenants may not ventilate rooms regularly
What about extractor fans?
Extractor fans are a good solution for targeted ventilation, such as in bathrooms and kitchens. They remove moist air directly from these areas and are vital for preventing localised damp.
However, they only address specific rooms. If your condensation affects multiple spaces or keeps returning, a PIV system can provide a whole-home solution.
Running costs and maintenance
PIV systems are energy-efficient — most cost less than £10 a year to run. They also require minimal maintenance, usually just a quick filter change every 3–5 years. Extractor fans, on the other hand, use slightly more energy and may need more regular cleaning or replacement.
Installation overview
A typical PIV installation takes just a few hours. The unit is usually fitted in the loft, connected to a discreet ceiling diffuser, and powered by a small electrical feed. There’s little disruption, and once running, the system quietly improves air quality throughout your home.
Why landlords love PIV systems
Landlords in Torquay, Paignton and Exeter often choose PIV because it helps protect their properties from mould damage and reduces tenant complaints about damp or musty odours. It’s a simple, low-cost way to maintain a healthier home and meet ventilation requirements.
Why choose BVEC Electrical?
We’ve installed PIV systems across South Devon — from modern apartments to older coastal cottages — helping homeowners and landlords tackle condensation for good.
Book your free home assessment with BVEC Electrical today. Call 01803 390841 to find out if a PIV system is right for your property.
