Top 10 Boilers of 2018
Updated: Mar. 12, 2018
FurnaceCompare tracks more than 530 series of boilers. Of those sold in 2018, which are most highly rated by homeowners?
The list below represents the top-rated boilers available for sale in the US and Canada. These furnaces vary in efficiency from 81.3% to 95% efficient, as measured by the Annual Fuel Utilization Efficiency or AFUE. They also vary in features and price.
|Rank||Brand and Series||Consumer Rating||Efficiency (AFUE)||Average Pricing|
|10.||Buderus G215||3.4 out of 5||up to 86.3%||$3,324|
|The Buderus G215 is an oil-fired cast iron boiler which uses a three-pass system design which heats the water three times. It features GL-180M gray cast iron, which according to the manufacturer provides 40% greater flexibility and reduces thermal shock due to rapid temperature change. There is a full 3" layer of insulation around the boiler, including the bottom, to help reduce standby losses and increase efficiency.|
|9.||Peerless WBV/WV||3.6 out of 5||up to 87.5%||$1,853|
|The Peerless WBV/WV is an Energy Star certified oil-fired boiler. The units are designed to be vented through a chimney, features cast iron construction, and can be used as part of either a hot water or steam system.|
|8.||Buderus G115WS||3.67 out of 5||up to 87%||$2,635|
|The Buderus G115WS is an oil-fired cast iron boiler, and it can be configured as a direct vent, or vented through a chimney. This Energy Star certified unit uses a 3-pass flue design to maximize efficiency.|
|7.||Westinghouse Combi Boiler||3.69 out of 5||up to 95%||$2,399|
|The Westinghouse Combi boiler is an environmentally friendly, low NOx system available in wall-mounted and floor-standing models. It is available in LP or natural gas and features a stainless steel heat exchanger with a fire tube design for optimal durability and efficiency. It also features a built-in gas leak detector which shuts off the unit and activates an alarm in the event of a gas leak.|
|6.||Peerless MI||3.75 out of 5||up to 82.2%||$2,470|
|The Peerless Series MI gas-fired, cast iron boiler is designed for natural draft use with a conventional chimney. It is available with spark ignition and features a low-profile design, allowing installation in areas with limited clearance. Other features include easily accessible controls, an electrically operated vent damper, and a boiler reset control with low water cut-off.|
|5.||Triangle Tube Challenger Solo||3.8 out of 5||up to 94%||$2,607|
|Triangle Tube's Challenger Solo is a wall mounted gas boiler with a copper tube / aluminum block heat exchanger. It can be vented with a variety of pipe material and size options, including a concentric venting option, and is indirect water heater compatible.|
|4.||Slant/Fin Galaxy GXHA||3.86 out of 5||up to 81.3%||$2,378|
|The Slant/Fin GXHA is a high performance gas-fired steam boiler with an intermittent pilot ignition and an optional tankless heater. It is built for installation in tight lcations with little headroom.|
|3.||Bosch Greenstar||4.57 out of 5||95%||$3,199|
|The Bosch Greenstar gas boiler uses a combustion process which achieves up to 95% efficiency and reduces nitrous oxide emissions. It is available as a heat-only or combination boiler and can be installed as a floor-standing or wall-mounted unit.|
|2.||Slant/Fin Sentry||4.67 out of 5||up to 84.4%||$1,932|
|Slant-Fin's Sentry is a gas-fired cast iron boiler available in five sizes. It features front-mounted controls for easy installation and maintenance, and an advanced natural draft design provides efficient operation and reliability.The Sentry's lower profile design makes it easy to install in sites with limited space or low chimney connections.|
|1.||Lennox GWM-IE||4.75 out of 5||up to 95%||not available|
|The Lennox GWM-IE is a gas modulating condensing boiler which the manufacturer states provides up to 40% greater efficiency than conventional boilers. Its modulating burner is designed to operate on a low setting most of the time, reducing sound levels and fuel costs while maintaining a precise temperature.|
Consumers and homeowners have submitted thousands of reviews to this site. In addition to reviewing a particular model of equipment, the reviewer also assigns a rating from 1 ("Very Unsatisfied") to 5 ("Very Satisfied"). The following list ranks the top 5 boiler series from worst to best, based on the average of those consumer satisfaction ratings.
FurnaceCompare.com has collected reviews on 74 different brands and 350 different series of boilers. However, we have only included a series on this list if we have at least 5 reviews of that series, and if the series is available in 2018. If we only have a few reviews, there is a risk that a single homeowner will skew the average rating too far in one direction or another.
The prices displayed are the average prices (of units including a burner) that we found on the websites of internet retailers that sell this particular series of boiler.
Note that prices -- even when they are published online -- can vary substantially based on the capacity of the unit in question: 24,000 BTU units are typically cheaper than 60,000 BTU units of the same brand and series.