Indoor air quality has become a major focus for homeowners who want healthier, more comfortable spaces, and the latest innovation from one of the UK’s most trusted manufacturers delivers exactly that. The Tornado STPIVLH Positive Input Ventilation (PIV) system is designed from the ground up to address long-standing issues such as condensation and mould, while enhancing day-to-day living through consistent, energy-efficient airflow.

Positioned at the top end of today’s residential ventilation options, the STPIVLH goes far beyond basic moisture control. It provides a reliable, intelligent route to a fresher, cleaner home environment, making it a standout choice for anyone upgrading their property’s overall internal air quality.

A Smarter Approach to Whole-Home Ventilation

What sets the Tornado STPIVLH apart is its refined method of delivering clean, filtered air. Instead of relying on high-speed airflow or intrusive extraction, the system gently introduces fresh air from the loft space into the home via a sleek ceiling diffuser. The result is a stable, balanced ventilation pattern that reduces humidity, dilutes pollutants, and supports a healthier indoor climate, all without calling attention to itself.

Built to stringent manufacturing standards which we have come to expect from Tornado products, this system reflects the kind of engineering quality that electrical professionals and homeowners alike look for: robust construction, proven reliability, and exceptional long-term performance.

Effective, Long-Term Protection Against Condensation & Mould

Condensation and mould remain two of the most common and costly issues in UK households. They damage décor, reduce the lifespan of building materials, and can negatively impact well-being. The STPIVLH directly addresses these concerns through constant background ventilation, ensuring that stale, moisture-laden air is replaced before it becomes a problem.

Homeowners can expect:

• Clearer windows and reduced daily moisture build-up
• A significant reduction in mould spores and damp patches
• Improved overall indoor air freshness

Unlike short-term fixes such as dehumidifiers or trickle vents, Positive Input Ventilation provides a long-lasting, energy-efficient solution that works continuously in the background.

Intelligent Temperature Management for Year-Round Comfort

Where some PIV units offer basic operation, the Tornado STPIVLH incorporates a thoughtful, automated temperature control system that adjusts to seasonal conditions without any user intervention.

• In colder months, the system activates its integrated heater to ensure the incoming air is comfortable while maintaining airflow.
• As the weather warms, the heater switches off automatically, avoiding unnecessary energy use.
• During periods of extreme loft heat, the unit pauses airflow to prevent warm air from entering the home, an advanced safeguard often missing from entry-level alternatives.

This ensures the home benefits from consistent ventilation while maintaining day-to-day comfort, regardless of outdoor conditions.

Designed for Seamless Installation

Engineered with installers in mind, the STPIVLH includes everything required for a neat, professional setup. Its loft-mounted design and wide 200mm diffuser make it well-suited to hallways, landings, and other central spaces, allowing for quick, unobtrusive fitting with minimal disruption to the household.

A High-Performance PIV System Built to Last

For homeowners seeking a dependable, low-maintenance way to improve air quality, reduce condensation, and keep living spaces fresher throughout the year, the Tornado STPIVLH stands out as a market-leading option. Combining intelligent control, quiet operation, and exceptional build quality, it delivers the kind of performance expected from a premium whole-home ventilation system.

This is Positive Input Ventilation refined, engineered for contemporary homes and backed by a manufacturer with a strong reputation for reliability.