UNI 150 wood boiler, 500K BTU


People watching this item right now
Out of stock


UNI burns manual feed biomass such as wood, coal, and woodchips.
UNI is very efficient with gasification mode and chimney sensor.

Heat: 12'000 ft²
Controller: 120V Fahrenheit
Weight: 3200 lb
Width: 30'', Depth: 63'', Height: 67''
Firebox size: 159 gal.us
Logs length: 48"
Made in Europe
Commercial Grade for Commercial Use.

 Dimensions: A-29", B-63", C-66¼", D-57", E-16¼", F-36", U-52½", V-54¾"    I-21¾", K-12", H-69" Loading door: 15" H, 21¾" W

UNI advantages are the large fuel loading chamber and variable heat output from 30 to 100%. Using micro air metering in the lower and upper fire chamber, clean complete combustion extracts the maximum amount of heat with a guaranteed efficiency of 85%.

TIS Tronic 83 master the combustion process depending on user parameter, weather, exhaust sensor, and fuel quality. The controller easily adapt to any modern heating system and combines with domestic hot water, thermal storage, direct feeding design and more. Simply enter the setpoint heating water temperature and the boiler will modulate the combustion to match the load. If the load is small the boiler will cycle to keep hot ashes.

UNI is manufactured with the finest certified boiler steel ASTM A106. The wide door openings make easy cleaning of the heat exchanger, loading of biomass and removal of ashes. 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



Reviews / Q&A


UNI Wood Boilers Series

Efficient Modulating Boiler with Gasification Mode

UNI is a cutting-edge 5-Star* long-burning boiler that uses wood, peat, coal, and wood waste.
Purchase Now

UNI Wood Boiler
Main Features

  • Fire Box

    Includes a large loading chamber
  • Smart Controller

    Multiple customizable options
  • Automated Fan

    Several speed options
  • Burning time

    Up to 24 Hours
  • Heat exchanger

    Efficient tubular design
  • Boiler Steel Frame

    High-strength grade, 5mm thick 

Made of high-strength boiler steel

Thickness nearly 1/4"

UNI boilers are constructed with ASTM A106, the highest quality certified boiler steel with powder coated boiler casing. This unit is distinguished by its enlarged loading chamber featuring durable cast-iron grates. High-quality multi-layer coating, non-combustible 2" insulation, and thermal protection systems ensure long-term and worry-free operation.

Simple to use yet

Powerful controller

Our boiler is outfitted with the most recent controller, allowing you to automatically control the operation of the fan with smooth modulation, the central heating pump (CH), and the hot water pump (DHW). You will also be able to program the combustion process based on the fuel type and operating conditions.

On the coldest days

A heat source you can count on

This boilers' clean, full combustion extracts the greatest amount of heat with a guaranteed efficiency of 86 percent or more using micro air metering in the lower and higher fire chambers. This multi-stage air supply system to the primary and secondary combustion chambers ensures that the emitted gases are completely burned.

Burning time on one load

Up to 24 hours

The spacious fuel loading chamber and variable heat output from 30 to 100 percent are features you will only find in UNI. It is also highly efficient with an exhaust gas maximum temperature of less than 260°F / 300°F. When combined with a buffer tank, you can access the gasification mode, which allows you to extract the most energy from your solid fuel.

Included with the boiler

  • Boiler assembly
  • TIS TRONIC controller unit  
  • Multi-speed fan
  • Set of grates
  • Fire poker
  • Cleaning brush
  • Ash pan
  • Installation guide
  • Controller guide
  • Looking for an installer?

    Don't keep searching and check our current installer map. 
    Find the nearest and give them a call!
  • Are you an installer?

    Reach us if you want to be added to our list! 
    Just write us an email to:
    And let us know about you!


  • Swipe right to browse the table

CAPACITYKbtu27 to 6851 to 13785 to 205154 to 338185 - 512320 - 1000545 - 1700
HEAT AREAft²250040005000650090001500022000
WATER VOL.gal21304048112315515
CONNECTIONinch1 ½1 ½22233
FIREBOX SIZEgal25445881159278382
LOG LENGTHinch20242630486688
BOILER WIDTHinch24283039 ½39 ½39 ½39 ½
BOILER DEPTHinch253436506381105
BOILER HEIGHTinch55556569698484
BOILER WEIGHTlb71699212241490200060507800

Customer Reviews

Be the first to write a review

Speak with a UNI owner in your Region

Use our interactive map to contact a Mbtek boiler owner in your area and ask about their boiler.

Customer Video Reviews

Customer Pictures

Frequently Asked Questions


Payment and Shipping


Where can I find your dealers?

We don't have a dealership. Please speak directly with one of our sales agents via phone, chat, email or text message for more information.

Who will install my boiler?

Mbtek does not offer physical installation. You will need a hydronic plumber to connect the boiler to the water system and a chimney installer. Please contact us for any assistance.

Where can I find parts?

At this link. We have spare parts ready to ship the following business day.

How long does a fire last?

This will depend on the type of wood you are using. However, at the lowest settings, a fire can last up to 24 hours. We recommend using gasification mode, which ensures excellent combustion with a quick yet strong fire. We also recommend storing this intense heat in a buffer tank. This will allow you to diffuse the heat slowly as needed.

Do I need to purchase anything else with my wood boiler?

When should I receive my unit?

When the unit is in stock, we will book the shipment for the following business day. The availability (or ETA) of a specific unit is mentioned on the top of each product page. Depending on your location, delivery can take 3 to 12 days.

Do I have to pay customs fees if my unit is coming from another country?

No. We take responsibility for these charges.

Are your products shipped from the U.S. or Canada?

This varies for each product. We have warehouses in Pennsylvania (U.S.), Alberta (CAN), and Quebec (CAN).

What is the product warranty?

We offer a 10-year warranty on welds. 
We also have replacement parts available.
Not enough items available. Only [max] left.
Shopping cart

Your cart is empty.

Return To Shop

Estimate Shipping