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Top 10 Boilers of 2016

Updated: Mar. 25, 2016

FurnaceCompare tracks more than 500 series of boilers. Of those sold in 2016, 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 82.2% to 96.8% 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. Triangle Tube Prestige Trimax Solo 3.27 out of 5 95% $3,683
Triangle Tube's Prestige Trimax Solo is a wall mounted modulating gas boiler with a stainless steel heat exchanger and premix burner. It can be vented directly out of a sidewall with a variety of PVC pipe sizes. The Trimax has an integrated cascade feature which can join up to 6 boilers.
9. Burnham Alpine 3.29 out of 5 95% $4,013
The Burnham Alpine boiler is a gas-fired, stainless steel, condensing unit available in six sizes. It is available as a wall-hung or floor-mounted unit and is equipped with the Sage2.2 Control System, which includes an LCD diagnostic touchscreen and allows linking of up to eight Alpine boilers.
8. 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.
7. 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.
6. 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.


5. Westinghouse Combi Boiler 3.88 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.
4. Heat Transfer Products Elite FT 4.6 out of 5 up to 96.8% $4,173
Heat Transfer Product's Elite FT is a wall-mounted, fully modulating gas boiler which features a stainless steel fire tube heat exchanger for optimal durability and heat transfer. A 40-character LCD control panel provides outdoor reset and indirect water heater integration, along with allowing cascading of multiple boilers. The Elite FT was named an Energy Star Most Efficient 2015 product.
3. 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.
2. Bosch Greenstar 4.7 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.
1. Lennox GWM-IE 4.9 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.

Compare our 2016 ratings to the best boilers of 2015.

Methodology

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 more than 85 different brands and 325 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 2016. 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.

Pricing

The prices displayed are the average prices 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.

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