Heatmiser Overview - Our History & Vision

About IMI Heatmiser

Based in Blackburn, Lancashire, IMI Heatmiser is a leading UK manufacturer of smart heating control solutions.

Founded in 1968, we design and develop intelligent controls that deliver precise, energy-efficient comfort for modern homes and buildings. Our products are developed in-house and trusted by installers, developers and contractors across the UK.

Built on strong installer partnerships and decades of customer insight, IMI Heatmiser has evolved from its underfloor heating heritage into a complete smart control ecosystem, compatible with a wide range of heat sources and system types.

In 2022, Heatmiser became part of IMI, bringing our smart control expertise into IMI’s Climate Control portfolio. Together, we help create more efficient, connected and sustainable heating solutions.

Established in 1968
Founded in 1968 as G&M Kay, IMI Heatmiser has grown from a local electrical contracting business into one of the UK’s leading manufacturers of smart heating controls.

Today, IMI Heatmiser is at the forefront of intelligent heating control and is a trusted control partner for many underfloor heating system providers across the UK.
SUPERIOR SUPPORT
Climate control can be complex. That’s why our experienced support team is on hand to help both homeowners and installers choose the right solution.

If something doesn’t work as it should, we provide clear, practical troubleshooting to get systems back up and running as quickly as possible.
Continuous Development
All IMI Heatmiser products are designed and engineered in-house. While low-cost thermostats are widely available, developing controls that are simple to install, easy to use, and consistently safe and reliable takes expertise.

Every product undergoes rigorous testing during development and is manufactured to strict quality standards. Continuous investment in next-generation products ensures our solutions meet the evolving needs of installers and homeowners alike.
Inclusive
We work with a wide range of partners while also supplying products directly to homeowners. This direct connection with end users helps inform the development of our feature-rich, user-focused solutions.

Installers, wholesalers and system designers benefit from our broad product range, technical expertise and the ability to deliver customised and private-label solutions.

Passionate about Energy Efficiency
Buildings play a critical role in reducing energy use and carbon emissions. As heating is one of the largest contributors to household energy demand, improving how it is controlled is essential for a more sustainable future.

IMI Heatmiser develops smart heating controls that help reduce energy waste by delivering precise, room-by-room control and intelligent scheduling. By enabling homeowners to manage heating accurately and remotely, our solutions support lower energy consumption, reduced running costs and a more responsible use of resources.
OEM & System Integration
IMI Heatmiser works in partnership with leading heating equipment manufacturers, OEMs and system integrators across the UK.

Our partners benefit from deep industry knowledge, in-house product design and forward-thinking control solutions. By managing the development and delivery of control products, we help OEMs and integrators focus on their core systems, projects and customers.
International
IMI Heatmiser products are supplied worldwide through an established network of international partners.

We are always keen to work with distributors, integrators and manufacturers interested in representing IMI Heatmiser in their local markets. If you’d like to explore partnership opportunities, please get in touch.
Online Store
Online Store

Our online store is available at www.heatmisershop.co.uk, making it easy to explore and purchase IMI Heatmiser products.

If you need advice or support, our technical support team is on hand to help. Call 01254 669090 or email support@heatmiser.com for assistance.