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Condensation on Your Windows Every Morning? A PIV Unit Could Help Homes in Bath and Corsham

You wipe water from the windows each morning. Black mould spreads behind the sofa or around the bedroom ceiling. The bathroom mirror stays wet long after showers finish.

Many homeowners across Bath, and the wider Wiltshire area deal with the same problem each winter. Older homes in Bath trap moisture. Modern housing estates in Chippenham hold warm air inside. Family homes across West Wiltshire build up condensation from daily life.

Cooking, showers and drying clothes indoors all release moisture into the air. Once that moisture stays trapped inside your home, condensation forms on cold surfaces. Black mould often follows.

Condensation causes more than stained walls and damp window frames. Mould spores can affect indoor air quality and trigger asthma or breathing problems. Damp conditions can also damage plaster, paintwork and timber over time.

You can improve airflow by opening windows across your home for short periods during the day. Cross ventilation helps remove stale damp air and brings fresh air inside. Extractor fans in bathrooms and kitchens also play a key role.

Some homes still struggle with condensation after taking those steps. This often happens in properties with poor airflow, sealed windows or limited ventilation routes. Many period homes around Bath and Wiltshire villages fall into this category.

A Positive Input Ventilation unit, known as a PIV system, offers another solution.

A PIV unit introduces fresh filtered air into the property from a loft space or central location. The system creates steady airflow throughout the home and pushes stale damp air towards natural exit points such as trickle vents and extractor fans.

Homeowners often notice less condensation on windows within weeks of installation. Bedrooms feel fresher. Musty smells reduce. Black mould growth slows or stops once moisture levels drop.

A qualified electrician or ventilation specialist needs to assess the property before installation. Loft size, insulation levels and existing airflow all affect system performance. Correct placement matters. A poorly installed unit can create cold spots or fail to move air through the home.

Watt & Co. Electrical Ltd installs ventilation systems for homeowners across Corsham, Bath, Box, Trowbridge and surrounding Wiltshire towns. The team assesses the property layout, existing ventilation and moisture levels before recommending a solution.

Many modern PIV systems run with low energy use and quiet operation. Some include built-in heaters for colder months. A properly installed unit can help create a healthier living environment without major disruption to your home.

UK Building Regulations place strong focus on ventilation standards in residential properties, especially in kitchens and bathrooms where moisture levels rise fast. Good airflow protects both the building and the people living inside it.

Frequently Asked Questions

Does opening windows stop condensation?

Opening windows helps reduce moisture levels and improves airflow. Many homes still need extra ventilation during winter, especially properties with sealed windows or limited natural airflow.

Can a PIV unit remove black mould?

A PIV system helps control the moisture that allows mould to grow. Existing mould still needs proper treatment and cleaning before it spreads further.

Do PIV units cost a lot to run?

Most modern systems use low levels of electricity. Running costs often stay lower than dealing with repeated mould treatment and damp repairs.

Need Help With Condensation Problems in Corsham or Bath?

Watt & Co. Electrical Ltd helps homeowners across Corsham, Bath and West Wiltshire improve airflow and tackle condensation problems with professional ventilation solutions.

If condensation keeps returning each winter, book an assessment and find out whether a PIV unit could help your home. ⚡

Source material adapted from the original Facebook post.

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Haydon
May 21, 2026
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