You won’t find a more experienced or knowledgeable team of biomass engineers anywhere in the UK.

Ranheat have lived and breathed biomass boilers and heating systems long before sustainability became a buzzword. We’ve been growing steadily since 1990 as a family-run business, trusted by customers nationwide to reduce costs and increase energy efficiency by designing, manufacturing and installing our UK-made range of industrial wood-burning systems.


We design and produce a range of wood waste management and biomass heating solutions for industrial and commercial customers. These include:

• Biomass boilers
• Automatically fed warm-air heaters
• Biomass silos and hoppers
• Ceramic flue gas filters
• Automatic stoker systems

Talk to us about your project today


Chris Franklin (Managing Director) completed a HND in Engineering and Naval Architecture at Portsmouth University. He then went on to gain a Diploma in Management Studies and Marketing. Afterward, he worked for the Danish Government as an export consultant, principally to promote Danish products in the UK. One of these companies was Ranheat Energy A/S, founded in the 1950s, originally based in Randers. They later moved to larger premises in Arden, Denmark.

The Danish company was sold, and the new owner quickly caused the company in Denmark to fail, mainly due to high-interest rates from Danish banks and changes in the German market. Consequently, Chris was left with the name Ranheat. He registered the name as a UK limited company. Manufacturing in the UK started in 1990. The company then began designing and manufacturing boilers and warm air heaters specifically for the UK market.

Over time, the designs became increasingly tailored for the UK woodworking industry market. They started working with new man-made materials like MDF, MFC, and OSB. Strict legislation regarding permits and emissions followed. Thirty-four years on, Ranheat is still producing bespoke biomass solutions from its factory in Northampton. The company is 100% privately owned by Chris and his wife, co-founder Barbara Franklin.


As a family run business, we are a very hands-on team. Biomass energy has been our focus for two generations now – we’re ever-evolving, and we don’t stand still. This combination of years of on-the-ground experience, alongside a very real passion for the benefits of biomass systems for our customers means we’re able to offer the very highest levels of service and support.

We’re really proud of our highly skilled team who handle all the vital aspects of biomass projects directly. Our in-house engineering and software development skills mean that we can continue to ensure the smooth-running of our systems throughout the lifetime of the installation.


Ranheat install biomass heating and hot water systems for customers nationwide from our centrally located base in Northampton. All our manufacturing is done on site by our own experienced team. This means we don’t have to rely on costly imports with long lead times, which translates to a fast, responsive service to our customers.


We are an established and trusted supplier to much of the UK’s woodworking industry, providing energy efficient biomass space and process heating systems powered by wood waste products. We also work with partners on district and institutional heating projects, from specification to installation, and consult widely on custom biomass energy projects.


Ranheat support our customers with every aspect of choosing, supplying, installing and servicing our biomass boiler and heating systems. With years of experience, we can help navigate the permission, planning and legal compliance requirements of a new biomass installation, and have assisted with accessing financial incentive schemes like the RHI or Carbon Trust Energy Efficiency loans.

Government programmes continue to move towards incentivising lower-carbon alternatives to oil and gas, and may even penalise fossil-fuel use in the future. Choosing Ranheat for biomass warm air and hot water systems can help your business ensure cost-effective, sustainable energy – for now, and the years to come.