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5 Best Wood Furnaces Sold in 2018

Updated: Aug. 8, 2018

FurnaceCompare has collected more than 925 reviews of 75 different series of wood furnaces, sold by more than 30 brands. Of those sold in 2018, which are most highly rated by homeowners?

The list below represents the top-rated wood furnaces available for sale in the US and Canada.

Rank Brand and Series Consumer Rating Efficiency Pricing
5. Polar G Class 4.16 out of 5 up to 86% starting at $7,866
The Polar G-Glass is an outdoor downdraft gasification wood furnace, with a combustion efficiency as high as 99.5%. The company has included a patent-pending cleaning system, to make daily cleaning quick. The company claims to have simplified installation as well, reducing costs to the homeowner.
4. Nature's Comfort NCB-G 4.2 out of 5 up to 78% starting at $8,480
The NCB-G features an updraft gasification design which provides boost air for cleaner burning. It has a 1/4" thick firebox and a 3/16" thick 7 gauge water jacket, and is designed to enable idling for summer use.
3. HeatMaster MF eSeries 4.6 out of 5 n/a starting at $6,495
The MF eSeries is a multifuel boiler that burns wood, coal and biomass. Units feature a shaker grate, removable ash pan, hinged rear door and forced air fan. Pricing is said to be comparable to the HeatMaster C Series, which begins at $6,495.
2. HeatMaster G Series 4.6 out of 5 up to 85% starting at $8,495
The G Series is constructed of titanium-enhanced, corrosion-resistant 409 stainless steel for improved durability and heat transfer, with a round firebox which provides greater strength with fewer welds. G Series furnaces are safe and clean enough to be installed in a garage or small outbuilding.
1. Crown Royal Pristine 4.67 out of 5 n/a starting at $10,779
The Crown Royal Stoves Pristine series is an EPA phase-2 certified down draft gasification furnace. Like many high-end outdoor gasification furnaces, the Pristine series has a titanium stainless steel firebox and water jacket, a water level indicator, and easy to use controls. It is covered by a 20-year limited warranty.

Methodology

Consumers and homeowners have submitted thousands of reviews to FurnaceCompare.com. 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 wood furnace series from lowest to highest, based on the average of those consumer satisfaction ratings.

FurnaceCompare.com has collected reviews on more than 30 different brands and 60 different series of wood furnaces. 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.

Pricing

The prices displayed are in US dollars, and are the pricing for the smallest (lowest capacity) units that we found for each series online.

Detailed Notes on the Best Wood Furnaces

1. Crown Royal Pristine Wood Furnace

Constructed with a stainless steel firebox and water jacket, The Crown Royal Pristine series is an EPA phase-2 certified down draft gasification furnace. The Pristine offers improved burning efficiency, easy cleaning and maintenance, automatic re-firing, reduced carbon footprint, reduced smoke, and improved energy efficiency. In addition Pristine series features a large Firebox door, an insulated rear door, a firebrick refractory for heat efficiency, and a water level indicator to measure water levels for better management.

Crown Royal offers an extended 20-year limited warranty on all stoves they manufacture.

Pros

  • One reviewer praised the energy efficiency of the furnace and commented on how it lowered their monthly energy bills.
  • One reviewer commented that the reason they chose this particular furnace was because they could place the furnace outside of the house and it would make cleaning easier.
  • Several reviewers stated that the furnace heats their houses very well even in very cold weather
  • Several reviewers praised the great customer service provided by Crown Royal Stoves when they had issues with the unit or with installation and needed assistance.
  • Several reviewers stated that the Pristine heats better and burns ess wood than previous models they owned.

Cons

  • Several reviewers complained that there was a design flaw with the zone pump that pushes water from the furnace to the rest of the house and that the solution was to install a bigger pump to improve the efficiency of the furnace.
  • One reviewer commented that the fiberglass insulation at the back was not very good as it needs to be removed when cleaning the unit.

2. HeatMaster G Series Wood Furnace

Designed for both indoor and outdoor installation, the HeatMaster G series is a gasification wood furnace. The unit is built for low maintenance. It has a capacity range from 100 to 250 gallons depending on model size and up to 350,000 BTU heating capability. The unity also features heavy duty multi-layer insulation and is constructed of 409 stainless steel. The unit offers safety features like an insulated rear hinged-door and a dual firebox latch.

HeatMaster offers a lifetime Workmanship and Corrosion warranty on the G series models.

Pros

  • One reviewer commented that there was no smoke seen coming from the furnace.
  • Several reviewers commented that the HeatMaster is reliable and easy to install, maintain, and clean.
  • Several owners praised the decrease in energy costs.
  • One reviewer complemented the customer service he received from HeatMaster
  • One reviewer praised the HeatMaster furnace for providing hot shower water in a house with over 5 people during the winter.

Cons

  • One reviewer complained that the blower is flimsy and if creosote collects in it, the motor breaks.
  • One reviewer complained that the rear door is quite heavy and requires more than one person to maneuver it during cleaning of the unit.

3. HeatMaster MF eSeries Wood Furnace

The HeatMaster MF eSeries is an outdoor multi-fuel furnace with capabilities of heating both wood, coal, and any other type of biomass. The MF eSeries has a water capacity ranging from 130 to 555 gallons depending on model type and up to 800,000 BTU heating output. It is manufactured from 409 stainless steel and features heavy duty double wall insulation, a dual firebox door latch and large round firebox. The units come with additional features such as an additional heat exchanger pass and an optional secondary air injection, which allow the units to burn 20-30% less wood than the regular MF series.

The MF eSeries offers a lifetime warranty against defects in workmanship and material of the firebox and water jacket, pro-rated after 5 years. In addition, HeatMaster offers a 5-year warranty on grates and firebox door, a 1-year warranty against ash pan corrosion, and a 10-year pro-rated warranty on all steel components. The water must be tested yearly to qualify for the warranties.

Pros

  • One reviewer praised the consumption capabilities of the furnace as it can burn both green and wet wood very efficiently.
  • Several owners remarked that the eSeries is easy to clean, maintain, and operate.

Cons

  • One reviewer complained that the temperature sensor is not well lit and requires the viewer to use a flashlight to read it.
  • One reviewer commented that the door should be larger as it would facilitate cleaning and maintenance.

4. Nature’s Comfort NCB-G Wood Furnace

The Nature’s Comfort NCB-G wood furnace is rated to more than 78% efficiency. It has a heating capacity of up to 500,000 BTU, depending on model type. The units are designed with an updraft gasification system that provides boosted air for cleaner burning. Each unit comes with a built-in ash pan, easy-to-operate controls with a pump, blower, and aquastat. The units are corrosion protected by a powder coat finish.

Nature’s Comfort NCB-G offers a 20-year material and labor warranty on the fire drum (prorated after 5th year). In addition a 10-year warranty on the water jacket (prorated after 5 years) and a 1-year warranty on other components are also offered.

Pros

  • One owner stated that the NCB-G is easy to operate.
  • One reviewer stated that the 325g model has a cleaner and more efficient burn than a central boiler.

Cons

  • One reviewer complained that in a house with more than 3 people, the furnace did not heat enough and does not stand up to the claims of 24 to 36 hour burn time.
  • One reviewer complained that the customer service was not helpful

5. Polar G Class Wood Furnace

The Polar G-Glass is an outdoor downdraft gasification wood furnace, with a combustion efficiency as high as 99.5%. The company has included a patent-pending cleaning system, to make daily cleaning quick. The company claims to have simplified installation as well, reducing costs to the homeowner. The units also come with a smoke X-tract system that prevents smoke from coming to your face and a STRONGWALL system that prevents creosote and condensation from causing corrosion in your fire chamber.

The Polar Furnace comes with a 15-year limited warranty. In addition, the Polar Furnace also comes with a 4-year leak repair coverage, and a 1-year total coverage on all repairs and maintenance costs.

Pros

  • Several reviewers stated that their energy consumption was very low because of the furnace.
  • Several owners stated that the unit is easy to clean and maintain.
  • Several reviewers stated that the unit stays very clean by itself

Cons

  • One reviewer complained that his 4-year old unit has an irreparable water leak.
  • One reviewer complained that the customer service is not good and when his unit had issues, they would not provide any support.

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