Biomass boiler ratings part 21 continues our expert and unbiased reviews with a look at the Ungaro, Unical, Varmebaronen, Verner, Viadrus, and Vienybe brands.
The CTU series features pellet boilers with automatic modulating controls. They have a copper heat exchanger for good heat transfer and offer an optional dhw kit. Their website is not much help and does not have a stated guarantee for their products. The boilers are made and sold in Italy.
These boilers are made in Italy and are available worldwide through their dealer network. The PELLEXIA units (shown here) burn wood pellets and feature programmable electronic controls but they have a large external hopper that takes up extra space. The ALLBIOMIX models can burn a variety of biomass materials and feature a durable stainless steel combustion chamber. They use gasification and modulating technology for clean and efficient operation. Their website is not much help and does not have a stated warranty policy.
This brand is made in Sweden and is available worldwide. The PELLMAX range offers three types of units to supplement any home's hydronic heating system. The BIOMAX units can burn logs as well as pellets. Their website is not much help and does not have a stated guarantee for their product.
VERNER------- kotle-verner.cz -------<1*
These units are available in Europe. The A251G model has a 25 kw heat output and has fully automatic operation. The unit can burn a variety of pellets/grains but their guarantee is not very good when compared to other brands.
The HERCULES DUO models are automatic modulating cast iron boilers that burn wood pellets as well as hard and soft coal. They are made in the Czech Republic and sold worldwide. Their website is not much help and does not have a stated guarantee for these products.
This brand is made and sold in Lithuania. The G series units are available in four sizes and have automatic control of the burning for improved efficiency. The warranty is not very good.
We continue our biomass boiler ratings with an alphabetical list of manufacturers and reviews of their products. You can continue to browse our list but, if you are looking for a specific brand, you can enter its name in the search box at the top of the page.