Guntamatic: The BMK Range
These highly efficient, modern log boilers have heat outputs from 20-50kW.
They are cased in stainless steel for a hard-wearing and sleek finish.
The BMK is MCS accredited and the whole range is RHI compliant.

Seriously Low Emissions
The BMK's emissions have been measured as significantly below the maximum emissions set out as a requirment for the RHI. The values of each model are in the table below and you can see the certificates here.
Modulating Log Boiler
Thanks to innovations in the field of log gasification technology, the BMK is one of a new generation of ‘modulating’ log boilers. It features primary and secondary Servo air controls, achieving high standards in terms of reliability, flexibility and efficiency.

A Complete Burn
Your logs should have moisture content of below 20% and be free from contaminants and metal. The BMK has a large 580mm deep combustion chamber that offers controllable combustion so that the system can cope with a range of fuel quality. Load in a huge volume of logs (up to 500mm long) and you won’t need to fill it again for a long time.

And with just 0.5-1% ash to the volume of fuel, you won’t need to empty the ash bins too often, either.

Self-Cleaning
The BMK features Guntamatic’s innovative self-cleaning grate, with moving turbulators that keep the heat exchanger tubes free from deposit buildup. This ensures your boiler’s efficiency is always at its maximum.
Fantastic Control

Touch screen control panels are supplied as standard with all BMK biomass boilers. They give you access to vital performance information such as efficiency and output, as well as allowing you to diagnose faults, keep on top of maintenance. You can even control the boiler from your smartphone (with the optional GSM module).
Automatic Hot Air Ignition
The modern and sophisticated design of the BMK range incorporates an automatic hot air ignition option, making it one of the most advanced designs on the market.

50 Years’ Experience Built In
Having recently hit their 50-year anniversary, it’s clear that Guntamatic are market leaders in renewable energy technology. Experience means that every boiler they make is created with huge industry expertise, and the BMK is no exception.
Parts Available for 20 Years

Guntamatic are unique amongst biomass boiler manufacturers as they make all of their own structural components. Every single part of the BMK is of the highest standards, offering you maximum return on your investment, low maintenance requirements and a long service life. You can get hold of spare parts easily as Guntamatic guarantees to make parts available for 20 years.
European Training Academy

They put an equal amount of effort into developing installers at their European Training Academy, so an authorised, highly trained and experienced engineer will fit the system for you.
BMK System Dimensions

