The Vent-Axia Lo-Carbon Tempra HTP 100mm 4" Heat Recovery with Timer Humidistat & Pullcord (443311) is an efficient solution for enhancing indoor air quality while lowering energy consumption. Designed for a 100mm diameter hole, it’s ideal for refurbishment projects in kitchens, bathrooms, toilets, or utility rooms. This unit provides continuous or intermittent extraction with a constant trickle speed and includes a humidistat and linked overrun timer for optimal operation tailored to your home. With a heat recovery efficiency of up to 78%, the Tempra HTP reduces your carbon footprint while meeting current Building Regulations. Its low power consumption of just 3.2W makes it an eco-friendly choice for improving your home’s ventilation system.