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With our boiler ratings you can cut through all the sales hype and find value. We have researched the manufacturers' data and combined it with our years of heating system service experience to provide our unique system of ratings. It truly is like taking a repairman with you while you shop! We have given you our top picks followed by a complete list of manufacturers and their ratings.
We have ranked gas fired boilers in three categories.
The first group is our basic boilers. They are the least efficient and usually the least expensive.
The second category is premium units. They are a little more efficient (up to 89% AFUE) but they are more expensive.
The last group is for ultimate units which are commonly called condensing boilers. These units have an AFUE of 90% or more but are also usually the most expensive.
The BS2 boilers from Bryant receive our highest recommendation. The brand is a part of United Technologies and these units are a part of their LEGACY LINE. They feature durable cast iron construction and stainless steel/titanium burners. They are compact and have a built in vent damper for energy savings.
The top honors for premium boilers goes to the BW3 models from Bryant. They feature durable construction and a very good warranty. The brand is a part of UNITED TECHNOLOGIES and are available in the USA and Canada but only through their factory authorized dealer network.
The ultimate gas fired boiler is the Logamax Plus GB142 from Buderus which is a part of Bosch Thermotechnology. The unit has advanced modulating controls with outdoor reset function for added energy savings. The unit is very quiet and is available in four sizes to match the needs of any home. The unit is also ready to be connected to an indirect water heater to produce the home's domestic hot water.
We continue our 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.
ADVANCED THERMAL HYDRONICS is a part of MESTEK. The KN2 boilers are floor-standing cast iron boilers with the ability to modulate the output from 40,000 to 200,000 btu/hr. This may be too big for newer homes and the brand is only available through their limited dealer network.