PELLET DUO 50 boiler, 170K BTU

📦 Product ETA: End Of October


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92% EFFICIENCY PELLET BOILER WITH EXTENDED AUTONOMY UP TO 2 WEEKS Pellet Duo is optimized for burning pellets. The boiler includes a self-igniter burner. You can burn pellets, corn, flax, sunflower husks, grains, cherry pits, or... Read more


Pellet Duo is optimized for burning pellets. The boiler includes a self-igniter burner. You can burn pellets, corn, flax, sunflower husks, grains, cherry pits, or manual feed biomass.

Heat: 6'200 ft²
Weight 1'100 lb, Width 45'', Depth 31'', Height 65"
Manual Firebox: 28 gal, maximum logs length 19"
Automatic Hopper: 150 gal - 700 lb of pellets
Made in Europe
Commercial Grade for Commercial Use

Pellet Duo is our most modern and efficient automatic boiler. The fuel supply operates with a hopper, a motorized auger and a motorized burner feeder with integrated fuel backdraft protection. The burner is made of heat-resistant stainless steel, a self-igniter, flame sensor, moving grates system for cleaning up ashes and the fan. The optimize combustion result in complete heat recovery with a guaranteed efficiency of 92%.


 European Standards of Emissions EN 303-5:2012

TIS tronic 496p master the combustion process depending on user parameter, weather, exhaust sensor and fuel quality. The controller easily adapt to any modern hydronic heating system and combine with domestic hot water, thermal storage, direct feeding, zone mixing design and more. Simply enter the setpoint heating water temperature and the boiler will modulate the combustion to match load. If there is no load the boiler will standby and reignites when needed. The automation with the large capacity hopper provides 4 to 10 days autonomy. The controller also includes functions of circulation pumps, motorize mixing valve, buffer tank, fuel level, summer/winter mode and thermostat feedback.

Pellet Duo is manufactured with the finest certified boiler steel ASTM A106. The wide door openings make easy cleaning of the top heat exchanger, middle loading of biomass and removal of ashes from the bottom. All maintenance is performed from the front and there is no need to unscrew anything else. High-quality multi-layer coating, non-combustible 2" insulation, and thermal protection systems ensure long-term and trouble-free operation.

Warranty: 10 years


Best used with: Boiler Station: All-in-one Solution, provides a circulation pump, a thermometer, a Boiler Protection Valve, and Insulation


Customer Reviews

Based on 11 reviews
GREGG Asher (Milaca, US)

good love the boiler

Eli Schmader (Sligo, US)
Pellet Duo 40 Boiler

I am very pleased with my new boiler. It is a well-made little unit and was delivered to me complete and damage free. Two mentionable items. First, I had to swap the wires going to the flame detector, other than that the system started and operated perfectly. Secondly, the design of the hopper is not as advertised on MBTEK website. It is unpainted galvanized metal construction with a slide open lid not a hinged lid. I like the design, no complaints there, I’m only pointing out that it’s not what I thought I was getting.
I’ve been operating the unit for about 3 months with no issues. I went as far as to purchase wood pellets from every big box store around and the unit performs the same using all of them. I have even operated the unit on 100% Cherry Pits, and it operated flawlessly.
The one feature that I was really looking forward to, was the ability to use firewood as a small supplemental heat source. I started a firewood burn twice now, just for fun. It does a good job controlling the solid wood fire. I was pleasantly surprised. My only complaint is that, at the end of the burning, I have to manually switch the unit to pellet mode. I hope that there is a software update (or I figure out how to set it up properly) that it will allow the unit to automatically switch over to pellet fuel after the solid wood fuel burns out.
Lastly, I would highly recommend MBTEK. They have answered several of my questions in a timely manner and are very easy to contact.

Sony Tremblay (Val-d'Or, CA)

Bonne machine

Fernand Gagne (Providence, US)

Nice boiler
Operate easy
No issues thank you

Corey W Gillum (Hunker, US)
Duo 40 pellet boiler

This boiler may take a while to get here. It takes some time to learn and perfect. It's not cheap.... But it's worth the wait. It's worth the expense. Well built and well thought out. I am pleased with this purchase and would highly recommend to a homeowner who is mechanical an tech savvy. If your the type of person who likes to tinker with things your gonna love this boiler. It's not plug an play, it's a totally customizable system that you fine tune to your homes personal needs. Get a professional heating /plumber to install this unit an be sure to get the ecoster thermostat with your unit. I bought this unit to replace my hot water oil burning furnace because heating oil was 5.95 a gallon. I use about 1200 gallons a year. This duo 40 has paid for itself already. A real work horse so far. I can't say enough about the quality of build on the thing. I was skeptical to purchase from a foreign manufacturer,but everyone who sees it in action all say the same thing, " dam nice piece , impressive". In addition to all of that, I can keep all my fuel expenses in my local area instead of buying from big tech oil companies all over the world.

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