EnviroVent EVL-H LoftVent MK2 Whole House PIV Ventilation Unit with Integral Heater

Product Description

The EnviroVent EVL-H LoftVent MK2 is an energy-efficient, loft-mounted Positive Input Ventilation (PIV) system designed to improve indoor air quality, control condensation and help prevent damp and mould in homes with a loft space. Featuring an integral intelligent comfort heater, this whole house ventilation unit delivers a continuous supply of fresh, filtered air while helping to maintain a comfortable indoor environment.

Ideal for houses and bungalows, the LoftVent MK2 introduces filtered air through a centrally positioned ceiling diffuser, typically installed on a landing or in a hallway. This gentle airflow dilutes and displaces stale, moisture-laden air, helping to reduce condensation on windows and walls while creating a fresher, healthier living environment.

Powered by an ultra-low-wattage brushless DC motor, the EVL-H combines quiet operation with low energy consumption. Its intelligent comfort heater automatically tempers incoming air during colder conditions, while the integrated hours run meter allows operating time to be monitored.

Key Features

• Whole House PIV Ventilation: Provides continuous filtered airflow to improve indoor air quality throughout the property.
• Integral Intelligent Comfort Heater: Helps temper incoming air during colder weather for improved comfort.
• Condensation Control: Reduces excess indoor moisture and helps minimise condensation on windows, walls and other surfaces.
• Mould Prevention: Helps create conditions less favourable to damp and mould growth.
• Ultra-Low-Wattage DC Motor: Energy-efficient brushless motor technology designed for reliable, long-term operation.
• Quiet Performance: Designed to provide effective whole house ventilation with minimal noise disturbance.
• Long-Life Filters: High-quality filtration helps remove airborne particles from the incoming air supply.
• Integrated Hours Run Meter: Enables monitoring of the unit's operating time.
• Automatic Heater Control: Temperature-sensitive operation adjusts heater output according to incoming air conditions.
• Independent Heater Switch: Allows the comfort heater to be enabled or disabled separately from the ventilation fan.
• Heater Safety Protection: Incorporates independent safety cut-out devices for additional protection.
• Loft-Mounted Installation: Suitable for properties with accessible loft spaces.
• 3-Year Warranty: Manufacturer warranty for additional peace of mind.

Energy-Saving Benefits

• Low Running Costs: The efficient brushless DC motor minimises electricity consumption during continuous operation.
• Solar Gain Utilisation: Makes use of naturally warmed air within the loft space when conditions allow.
• Improved Heat Distribution: Helps circulate air throughout the property and distribute warmth more evenly.
• Reduced Need for Window Ventilation: Provides a continuous supply of filtered air without relying solely on opening windows during colder months.
• Intelligent Air Tempering: The integrated heater operates when required to help maintain comfortable supply air temperatures.
• Long-Term Efficiency: Durable motor technology and long-life filters support dependable operation and manageable maintenance costs.

Condensation Control & Indoor Air Quality

Modern homes with double glazing, insulation and effective draught-proofing can experience reduced natural ventilation. Without sufficient airflow, moisture from everyday activities such as cooking, showering and drying clothes can accumulate indoors, contributing to condensation, musty odours and mould growth.

The EnviroVent LoftVent MK2 EVL-H helps address these problems by continuously introducing filtered air into the living space. This positive air pressure encourages stale, humid air to escape through existing ventilation routes, helping maintain a more balanced indoor environment.

By reducing excess humidity and supporting better ventilation, the system can help limit conditions that encourage mould growth and improve overall indoor air freshness.

Integral Intelligent Comfort Heater

The EVL-H model includes a built-in intelligent comfort heater designed to temper the incoming air supply during periods of low external temperatures. An integrated temperature sensor monitors the supply air and automatically regulates heater operation to maintain preset minimum temperature levels.

The heater features two independent safety cut-out devices and can be switched on or off separately from the fan, allowing ventilation to continue when additional air tempering is not required.

Technical Specifications

• Manufacturer: EnviroVent
• Product Range: LoftVent MK2
• Product Code: EVL-H
• Ventilation Type: Positive Input Ventilation (PIV)
• Installation Type: Loft Mounted
• Application: Whole House Ventilation
• Motor Technology: Ultra-Low-Wattage Brushless DC Motor
• Comfort Heater: Integral Intelligent Heater
• Filtration: Long-Life Air Filters
• Hours Run Meter: Integrated
• Heater Control: Automatic Temperature Control with Independent Enable/Disable Switch
• Warranty: 3 Years

Suitable Applications

• Houses and bungalows with accessible loft spaces
• Properties experiencing persistent window condensation
• Homes affected by excess humidity, damp or mould
• Energy-efficient residential ventilation upgrades
• Properties requiring continuous whole house ventilation
• Retrofit and refurbishment projects

Data Sheet:

Download EVL-H Technical Data Sheet

Instruction Manual:

Download EVL-H Installation Manual

Product Brochure:

Download LoftVent MK2 Product Brochure