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HeatMaster G Series Wood Furnace

#2 of 3 HeatMaster Wood Furnaces

Updated: Oct 11, 2017

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Overview of the G Series

The HeatMaster G Series is a gasification wood furnace approved for indoor and outdoor installation. The gasification process reduces wood consumption, and its low maintenance design allows easy loading and cleaning. It is available in water capacities of 100, 195 and 250 gallons and a heating capacity of up to 350,000 BTU. The unit is constructed of 409 stainless steel for greater heat transfer and tolerance and features heavy duty multi-layer insulation. An insulated hinged rear door provides easy access to the rear of the furnace, and a dual firebox door latch is designed for safety. The 2016 starting price of the G Series wood furnace is $8,495.00.

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Consumer Reviews of the HeatMaster G Series

Compare to Other Heatmaster Wood Furnaces:
  • Very Satisfied
    20
  • Somewhat Satisfied
    3
  • Neutral
    0
  • Somewhat Unsatisfied
    1
  • Very Unsatisfied
    4


Date created: 2017-10-11 Name: Lance
Location: Maine

Satisfaction Rating:

5 of 5 stars

Review:
"No smoke"
Had 5 months of running with the furnace cut my wood use way down and no smoke if you see smoke it is not burning right. Small learning curve and more maintenance when compared to my old furnace but the wood usage and no smoke well worth it.


Date created: 2017-10-06 Name: Ron Paddock

Satisfaction Rating:

1 of 5 stars

Review:
"Risky"
You may want to look at their previous ventures with stainless steel and where they are today, aka Pacific Western, Global Hydronics, Wood Doctor...all went out of business so the warranties are not worth the paper they are written on.


Date created: 2017-09-27 Name: Tyler Fevig
Location: Plainwell, MI

Satisfaction Rating:

1 of 5 stars

Review:
"Heatmaster is unbeatable"
G200 is a super efficient stove! I am heating 2000 sq ft and running ice melt on a 300 square ft patio. I could easily heat another 2000 and a pool. Never have to worry about running out of hot water with a 20 plate heat exchanger. Smoke bypass and handle for cleaning heat exchange tubes are amazing features you won't find on any other stoves. I did the complete installation myself with no problems. East to maintain. Easy to clean. I purchased the stove from Rob at rls Energy in Eaton Rapids mi, he was extremely knowledgeable and helpful.


Date created: 2017-09-25 Name: Robert Sepeter
Location: Michigan

Satisfaction Rating:

5 of 5 stars

Review:
"I love my G400"
This g400 has been awesome. Efficient with wood, East to maintain. Easy to clean. They have covered most features you would want in a wood stove. Outer finish is the best. Cleaning the upper chamber, simple. The by pass damper is the most notable feature. Takes away most of the blow out when opening the door, makes loading much more pleasant. A real safety item. Any adjustments to the door seals are simple and well though out. Awesome stove


Date created: 2017-09-18 Name: TIna Hesketh
Location: Westbridge, BC Canada

Satisfaction Rating:

5 of 5 stars

Review:
"New and improved!"
Two years ago we lost our outdoor wood furnace to a horrific fire that took out 30 homes in our area. Within two and a half months I was back up and running with the newer improved Heatmaster G Series Wood Furnace. The upgrades to this model are just what was needed. No more flames licking out at you as you fill it. Easier access for ash clean out. We heat our home with forced air and our hot water is heated by hot water coming from the wood furnace. Lower household heating and water heating costs. I have recommended this brand and furnace to many people considering the switch from indoor wood stove to outside.


Date created: 2017-09-16 Name: Mark E

Satisfaction Rating:

2 of 5 stars

Review:
"Furnace operation, poor blower"
Furnace is very efficient, burn clean, use a lot less wood and 3/4 less ash than the last wood boiler. However I have one problem, the blower is flimsy if one of creosol collect on the wheel it destroy the motor before the season is out. recommend a motor with a stronger bearings


Date created: 2017-09-13 Name: G. Schoppenhorst
Location: Endeavor, WI

Satisfaction Rating:

5 of 5 stars

Review:
"G200 one year out"
As winter number two approaches for my HeatMaster ss g200 I thought I would give an update. Having done outdoor boiler installs three years in a row, I am glad not having to do it a fourth time. Just a couple of minor items to work out, adjusting the loading door for a better seal and adjusting the cycle time in between calls for heat to help re-firing in mild temps. The efficiency and lack of smoke out the stack is great but what really impresses me is the customer support I have received from HeatMaster. Any piece of equipment can have problems but how a company stands behind their product is what sets them apart and HeatMaster has been exceptional. I would buy a HeatMaster G series again but hopefully won't have to.


Date created: 2017-09-13 Name: J. Smith
Location: Wooster, OH

Satisfaction Rating:

5 of 5 stars

Review:
"Plenty of Hot Water"
We have a large family. With nine children, hot water goes fast and we've had to be creative to make sure everyone could get a hot shower. In the fall of 2015 we bought the Heatmaster g400 outdoor wood burning furnace. We primarily purchased it for heat in the winter since my wife was less than happy with the "cool heat" our all electric home produced. We were down to only six of the kids still at home but four of them are girls and in their teems or just pre-teen. And then a wonderful thing happened. I slept in one day and was the last to get a shower and it was hot! I had a hot shower after a morning of five women all getting their own hot shower! I now look forward to colder weather so I can fire up the furnace, not just to stay warm, but to have unlimited hot water. Love my furnace.


Date created: 2017-09-13 Name: Denis Gour
Location: Cantley, Quebec, Canada

Satisfaction Rating:

5 of 5 stars

Review:
"Pleasant experience"
I have a 2 year old g200 wood boiler and have burnt about 21 face cords of mixed soft and hard fire wood each winter to heat approximately 3,000 square feet of building and the domestic hot water. In my opinion I consider that to be quite efficient. The unit is easy to operate and maintain. The company stands by their product, are very knowledgeable and the same can be said about the local representative serving my region. The only disappointment thus far was the quality of the refractory brick but the company is replacing them at their expense. I would definitely buy another Heatmaster boiler and am recommending that product to friends and family


Date created: 2017-09-12 Name: S. Stanley
Location: Pulaski, VA

Satisfaction Rating:

5 of 5 stars

Review:
"Supper Outdoor Furnace"
I am most satisfied with my Heatmaster outdoor furnace. It has been installed three years, so I will be starting on my fourth year using it. It has proven to be a very consistent heat and has a very positive impact on my electric bill. Anytime, I have need information or supplies, my local dealer has been most helpful with whatever I have needed. I would highly recommend a HeatMaster furnace to others.


Date created: 2017-09-12 Name: Chuck Harrington
Location: Vassar, MI

Satisfaction Rating:

5 of 5 stars

Review:
"Very happy with my Heatmaster"
I have owned my Heatmaster ss8000 since 2008, it has been great. It is very efficient, plus I have ready hot coals to grill with. This will be our ninth year and it has been problem free


Date created: 2017-09-08 Name: Barbara Morehead
Location: Bland, VA

Satisfaction Rating:

4 of 5 stars

Review:
"MONEY SAVER with LOTS OF HARD WORK"
I love saving money with our HeatMaster outdoor furnace. Our house is over 2000 sq. Feet. I like to keep the temperature at 75 degrees in the winter. So, when I come in from feeding the cows. I get warm. We also, heat our water with it. Our son likes long showers. That is a money saver. Our electric bill is usually about $65.00 in the winter. What I don't like about it is. How cold I get filling it up and taking the ashes out. How much the wood cost. When we have to buy it. Instead of cutting our own. "Do not buy this if you are afraid of hard work"


Date created: 2017-09-08 Name: Todd Shrewsbury
Location: Pulaski, VA

Satisfaction Rating:

5 of 5 stars

Review:
"Two year review."
Hello, I thought I would take a moment and give a two year review on my Heatmaster ss g200 outdoor wood furnace. On October 9th 2015, I installed my stove with help from my dealer. This day took about three years of planning, preparation, and research. My situation is different than most, due to my terrain and home location. I was very interested in the gasification market for two main reasons, the wood consumption and smoke. I had been heating my home and shop with conventional wood stoves and while I loved the heat, they came with a multitude of problems. After all my research I made the decision to go with HeatMaster based on three things: the company, material (Stainless steel), and my local dealerís reputation. After installation there was a learning curve on this unit, but it didnít take long to realize that running this unit was by far easier than my indoor wood stoves. We are heating about 2400 square footage of home and 850 square footage in an uninsulated shop and of course our dhw. I have my house on forced air while I built a sealing blower for my shop. About two months into winter, my wife told me that the stove might be one of the best investments we had ever made. After my first winter season, my dealer contacted me and said that they would be coming around and making some upgrades to my unit. Heatmaster had made some changes to better the performance and reliability to these stoves. Instead of just making the changes on the newest models, they paid the dealers to make the changes to the units already in use in the field. For me this was a sign that I had defiantly made the right choice on my investment of an outdoor wood furnace. I personally have never had a company more willing to help solve problems and stand behind their product than Heatmaster. Regarding the stove itself, one of the best parts about the stove is its ability to heat for a long period of time. I load it in the mornings and evenings but for any reason I donít make it home until late at night I know that I still have plenty of wood/fire and my house is still warm. When Iím out of town, my daughter feeds the stove and is very comfortable using the smoke bypass and loading the stove. Wood consumption is good in my opinion; I burn about double what I burned in the house. In my estimate Iím around the 4-5 cord range which is extremely good. In closing thanks to my g200 I have unlimited hot water, a regulated warm house and no mess indoors anymore. Thanks, Todd in VA


Date created: 2017-09-06 Name: Steven Yoder

Satisfaction Rating:

5 of 5 stars

Review:
"Love it... Mostly"
I have an early model Heatmaster g200. Prior to this I had an old Pacific Western. While very inefficient you could burn anything. My Heat Master is much more efficient and my wood consumption has dropped considerably. Also there is very little smoke now. Very nice. The only thing I don't like is that if your wood is green there will be moisture build up in the fire box. Not a real issue just looks messy. But here again that is really my problem because I haven't seasoned my wood as I should have. Definitely would recommend the stove!


Date created: 2017-09-03 Name: Dave Rathwell
Location: Perth, Ontario, Canada

Satisfaction Rating:

4 of 5 stars

Review:
"Outdoor wood furnace customer review"
We purchased our g200 furnace in 2014 and after a few learning curves with the gasification system we are quite pleased with it. Our old outdoor furnace was the conventional kind with the door vent. One difference we notice is that when you throw in a piece of wood, you can be guaranteed that all the wood is used and burnt down to ashes. Two suggestions I would make are to have the temperature light larger. I have trouble reading it without glasses on which I only wear for reading. Secondly, the back door is heavy and awkward to maneuver making it difficult to replace by yourself. I would suggest some sort of hinged affair. Overall, it is quite, efficient and smokeless, so I would give it an 8 out of 10 at this point in our first two years


Date created: 2017-09-03 Name: Carey Burford
Location: Stamping Ground, KY

Satisfaction Rating:

4 of 5 stars

Review:
"Warm times"
Our house has the most warm even heat it has ever had! I used to burn two wood stoves in the house for heat and their were hot and cold spots. Now the heat is even thru the house and I use less wood.


Date created: 2017-09-02 Name: Laura Lowson
Location: Perth, Ontario, Canada

Satisfaction Rating:

5 of 5 stars

Review:
"Completely satisfied"
The Heat Master outdoor wood stove is an appliance that has brought comfort to our home without disappointment. It is pleasure when the winter cold arrives to start it up and settle into the toasty heat it provides our home. We would buy Heat Master again. How often can one say they have been completely satisfied with a product?


Date created: 2017-09-02 Name: Teek Persaud
Location: Bloomingburg, NY

Satisfaction Rating:

1 of 5 stars

Review:
"Excellent very efficient burning."
Use 3 wood burning stove and the g Series is been far the most efficient burning stove I owned. Highly recommended. There is no cleaning of tubes just two shake of the cleaner and they are cleaned. Only improvement is a bigger display cant see the temp. Would definitely buy another.


Date created: 2017-09-02 Name: Tammy Smith
Location: Laurelville, OH

Satisfaction Rating:

5 of 5 stars

Review:
"Heatmaster"
We love our G series heatmaster! We have saved so much money on our heating bills. And it's so easy. We only fill it twice a day , morning and evening. We not only heat our house Also our three and half garage too. The best part of all is the warmth, so toasty warm like nothing else we have used. We now look forward to winter and don't worry about unwanted high heating bills. I would highly recommend the HeadMaster G series!


Date created: 2017-09-02 Name: Andy Brandt
Location: Ste Anne, MB

Satisfaction Rating:

5 of 5 stars

Review:
"G 200 review"
When I first got the stove I was somewhat disappointed because the unit was thermostat layering and it seemed that the Manama tire was reluctant to help. Turns out they were reluctant to proceed with a fix and I was disappointed in the product, having invested 20,000 plus dollars in the system I diagnosed and designed a fix for the thermos layering problem. A couple years after I had a fan motor give me problems and a cracked set of lower bricks. After dealing with the supplier I was again disappointed with the slow service and lack of enthusiasm when dealing with a customer who purchased 20,000 dollars of materials from their retail outlet. After some time the retail side put me in touch with the factory and I got the chance to speak and visit the the family owners. They are really good people and being a small business person myself I soon realized how hard it would be to satisfy everyone. With that said I got a tour of the factory, I got to give input of the product along with seeing some of the changes made to the new models, I also got all the parts needed for my stove on warranty and I walked out with a couple hats and a beautiful hoody which I wear most days to work and this little hoody generates many conversations when people ask "What is Heat Master"? My short answer to them is "a great little family business in Winkler that makes wood boilers" and I then proceed to explain how great my stove is. Thanks Devin and family! Andy Brandt


Date created: 2017-09-01 Name: Jeff Callicutt
Location: North Carolina

Satisfaction Rating:

1 of 5 stars

Review:
"G200 is a great stove"
I have had my stove for 3 years. The stove has kept 3500 sq feet warm and all my water needs. We love it and it has very little maintenance. Also the wood consumption is less compared to other stoves. If you are looking for a great stove go with Heatmaster.


Date created: 2017-02-19 Name: Dean
Location: Western Maine

Satisfaction Rating:

5 of 5 stars

Review:
"Upgrade from an old Sequoyah"
Upgrade from an old Sequoyah. Heating and hot water for two homes a 5000 sf farm house and a 2000 sf light home. She cranks once you get the hang of what to feed her. She burn green with little smoke if you through in a few dry pine logs.


Date created: 2016-11-24 Name: John Schieferstein
Location: Maine

Satisfaction Rating:

5 of 5 stars

Review:
"New G-200"
While its still early to review. So far we very happy with the machine. Burns very clean and seems pretty efficient, although its very early still.


Date created: 2016-01-31 Name: A. Walters
Location: Westport, MA

Satisfaction Rating:

5 of 5 stars

Review:
"Great boiler!"
Installed our Heatmaster SS G-200 this year and so far we love it. It's heating our 1840 un-insulated house easily at 70 degrees. Wood consumption is fair and no smoke. More hot water than you could ever use. Wish they were a little less costly so more people could afford one.


Date created: 2016-01-22 Name: J Sinclair
Location: Canterbury, NH

Satisfaction Rating:

5 of 5 stars

Review:
"Heatmaster G200"
I bought this Outdoor Gassification Wood Boiler to replace a 25 year old Hardy H4 model conventional outdoor wood boiler. I live in New Hampshire and was using between 12-14 cords per 6 months of heating season. So far I have cut my wood usage down to just over 1 cord per month which will bring me to about 7.5 cords per 6 month heating season. I have had no issues with the boiler so far. Once a coal bed of 2-4 inches is established I just load the amount of wood I think that I will need to get me to the next loading (typically 12 hours). My wood moisture is between 20-25%. I have not yet cleaned any ashes from the primary burn chamber after 4 cords of wood. I rake out the ashes from the Secondary reaction chamber after each cord of burning and remove approximately 3 spade shovel fulls of ash.


Date created: 2016-01-18 Name: Martin Lappin
Location: North Liberty, IN

Satisfaction Rating:

5 of 5 stars

Review:
"Review of G400"
I researched many different brands of stoves over the last two years, 409 stainless was a requirement as my first stove, a homebuilt Central Boiler knockoff was suffering from some serious corrosion problems. I had even started to collect parts to build my own gassifier. After doing an extensive Google search on Heatmaster SS and reading the reviews from other owners I decided to buy a stove from them rather than risk building one out of a material I hadnít had a lot of experience fabricating and welding before. Even though I had plenty of time to buy a conventional before the end of the year I still decided on a G Series as the appeal of burning less wood was very appealing, and burn less it does. Iím heating a 2800 square foot 1800ís farm house with a lot of single pane wood frame windows that need changed out, and so far out of the exterior rooms weíve remodeled everyone had voids in the walls where the blown-in cellulose didnít reach. The shop is a converted pole/cow barn with not even a vapor barrier under the cement let alone any insulation around the perimeter; itís insulated with the foil-bubble-foil insulation and still needs to be tightened up more. The G400 easily heats the house and with the below zero nights weíve had lately I still keep the shop at 40-45 at night, and I can also run my snow melt as well which is 110í of sidewalk. My old stove couldnít do all three no matter how much wood was shoved in through the day and sometimes could barely handle two. Earlier in the year when we had 40-50ís for daytime highs and just getting to freezing at night I was having a steel rack of wood (holds half a cord) last 14 days. Now with the highs in the single digits, lows below zero at night and a -20 windchill I still expect to get at least four days out of half a cord and maybe part of a fifth. At most Iím looking at 4 cords a month during the most bitter part of the winter. So far Iíve had zero problems with bridging or maintaining a coal bed. Iím burning Ash that was cut last winter, split then thrown in a pile. All is burning well even with the excessively wet summer we had here. Iíve also gone into the woods and cut dead ash, cherry and elm pole trees and have burnt those as well with no problems. Large pieces have been 12-14Ē diameter, just need to add enough smaller pieces to maintain a coal bed. All of it was under 25%, Iíve burnt some wetter stuff that was laying on the ground in the woods but works better if itís mixed with equal parts of dry wood. Work the cleaning handle on the side once a day then depending on how much wood has been run through it I clean the bottom every 4-7 days. So far, it takes less than five minutes to do weekly maintenance. The powered draft with the bypass door is an excellent feature. We eat breakfast at our local American Legion every Sunday morning, with my old one I either filled it before we left, then came in and changed clothes or put it off till we got home. With the G Series I can go out in my good clothes, fill the stove before we leave for breakfast and Iíve yet to have anyone mention that I smell like wood smoke. Overall Iíve been very satisfied with my purchase, so much so that I decided to also sell Heatmaster SS products.


Date created: 2016-01-18 Name: Richard Emmons
Location: Lyman, ME

Satisfaction Rating:

5 of 5 stars

Review:
"G 200"
In full disclosure, I am a HeatMaster distributor! I have been selling, servicing and installing outdoor wood boilers now for over 10 years. I have worked with many different outdoor wood boiler products over the years and the G series is in my opinion top of the line! We are certainly not perfect but what attracted me to HeatMaster in the first place was the way that the company took care of any issues in the field, I have seen it first hand as I do service work on all types of outdoor wood boilers. This unit is the easiest wood gassifier to operate, service, clean and maintain on the market. The fact that it is 409 stainless construction at first had me concerned but after seeing several brands built from mild steel corrode through and leak in less than 2 seasons, I took the trip to the factory to watch it be built. They opened up anything I asked to see and I was very impressed at the quality control care taken in the building process. After picking through the process over a 3 day visit, I decided to come on board with HeatMaster, Great product, fair pricing, Awesome people and an honest warranty! If you are in the market for an outdoor wood boiler, this is top of the line! Please feel free to contact me directly at ([email protected] ) if you have any questions regarding the G Series boilers from HeatMaster.


Date created: 2015-12-19 Name: B Earls
Location: Saratoga, NY

Satisfaction Rating:

5 of 5 stars

Review:
"Gasification furnace."
Hello, New to the forum, I wanted to do a review for the people on the forum and also for readers that are just cruising through looking for good info. I purchased a HeatMaster SS G-200 back in August after doing a lot of research on many different brands that are out there. Looking at all materials used in the different units and how they hold up, I learned that mild steel, boiler plate, 304 stainless steel, cast iron, are not the materials that are the best. They all have problems with heat transfer, cracking, water leaks, rapid corrosion. The 409 stainless steel overcomes all that. After seeing one in operation at the Boonville, New York logging show, I was impressed with the quality and amount of stainless that is used in the units. I purchased one that was at the show and the dealer delivered it on his way home. Thank you Bob. I removed my old Marathon boiler which was way too small for my house and garage that I added. I Installed the G-200, in a few days it was up and running. Always comes up fast to high temperature, which is good for 200 gallons of water. Quick recovery! With dual inlet and outlet ports it was an easy hookup, one set to house one set to garage. Fired it up, pretty easy to do with the blower on. It smoked a little until it started to gasify, then it cleared up and just heat waves out the stack. I burned pine until mid November with no problems and plenty of heat on the cold nights. Switching over to hardwood in November. It has been warmer this winter than last. I have been getting about 20 hour burn time on the wood, just heating the house on 28*F nights. HeatMaster made it easy to clean the heat exchanger tubes with the external handle. And the smoke bypass pulls the smoke away from you while you are loading. Easy ash removal on the bottom, less than a minute to do, maybe twice a month. I am very happy with this unit and the support I have received not only from the dealer and distributor, Slimjim, but at the factory level also. They all will answer the phone and return your calls. Thank you HeatMaster SS for building a quality outside wood furnace. Definitely refer a friend to HeatMaster SS. Best regards, Smokeless in NY


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Other G Series Reviews

Online comments regarding the G Series seem to be mostly positive. Most responses to a homeowner on outdoorwoodfurnaceinfo.com who was thinking of buying one were very positive and said that it is a great unit, though a couple did mention that gasification units require more care than conventional units.

G Series Warranty

The warranty for the HeatMaster G Series wood furnace is comprised of the following:

  • Lifetime Limited Workmanship and Corrosion Warranty

 
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