Firewood & Pellet Combi Boilers

Firewood & Pellet Combi Boilers: The Best of Both Fuels

Combi boilers give you the flexibility to burn either split logs or wood pellets in the same unit, switching between fuels as your supply or lifestyle changes. They are ideal for homes and businesses that want the low running costs of log wood but the convenience of automatic pellet firing when logs aren’t available.

How a Combi Boiler Works

A single boiler body accepts both a log wood chamber and a pellet burner
The control system automatically switches to pellet firing once the log wood fire has burned down
Works alongside a buffer tank in the same way as a standard log or pellet boiler

Froling Combi Boiler Range

Froling S2 Dual Compact (15–20 kW) – a compact combi boiler for smaller properties, combining a log wood chamber with an integrated pellet burner in a single, space-saving unit.
Froling S5 Dual (22–40 kW) – a higher-output combi boiler for larger homes, offering the same seamless switch-over between log wood and pellet firing.

Froling Combi Boiler Technology

The Froling Lambdatronic control system continuously monitors combustion and manages the automatic switch-over between log wood and pellet firing, so no manual intervention is needed
A self-cleaning heat exchanger and automatic ash removal keep servicing to a minimum, even when the boiler is running on pellets for extended periods
Combustion efficiency of up to 95%, with low emissions that meet current Ecodesign and RHI requirements
Pairs with a standard buffer tank, and can be combined with either a bag-fed pellet hopper or a bulk pellet store depending on the space available

Is a Combi Boiler Right for You?

Great if you have access to logs but want a reliable automatic back-up
Removes the need for manual reloading when you’re away from home
One boiler instead of two separate systems, saving plantroom space