Flex Series Heat for Days. Load Less Often.

Flex Automated Pellet Series Outdoor Furnaces

The Flex Series combines efficient biomass heating with an advanced automated fuel hopper designed to dramatically reduce the need for frequent loading. Depending on heating demand, fuel type, and outdoor temperature, the large-capacity hopper can provide heat for several days to weeks between refills—making it an ideal solution for homeowners who travel, work away from home, or simply want less hands-on heating.

409 Titanium Stainless Steel

Heavy-duty 2,200 lb unit constructed with 409 Titanium Stainless Steel for the durability and long-term performance.

Water Level Indicator

An easy-to-read water level indicator helps you quickly monitor the furnace and know when additional water is needed.

Digital Control Panel

Easy-to-read digital controls make it easy to adjust temperature targets and monitor furnace operation. The illuminated display is easy to read day or night. They are also economical and easy to replace.

On-Board Hopper

The large 1,400 lb capacity hopper provides extended fuel storage, reducing the need for frequent refills and the EZ-Fill loading door makes for easy, convenient refueling. 

Hot Air Ignition System

The automated ignition system provides rapid, ultra-reliable fire startups without the need for manual lighting.

Self-Adjusting System

Self-modulating draft inducer and augers automatically adjusts both airflow and pellet feed rates to match actual heating demands, eliminating short-cycling and maximizing fuel economy.

Easy to Monitor

A sight glass in the firebox door lets you see the fire without opening the door, making it easy to monitor combustion while keeping heat contained.

Why Choose A Flex Series Stove?

Heat for Days, Not Hours

The large-capacity hopper and automated fuel feed can provide several days to weeks of heating between refills, depending on heating demand, fuel type, and outdoor temperature.

Less Hands-On Heating

Automated fuel delivery and self-modulating airflow adjust to heating demand, reducing the need for frequent loading, monitoring, and manual adjustments.

Efficient, Cleaner Combustion

The Omni-O.2 combustion system distributes air around the fuel to support complete combustion and secondary gasification for efficient, cleaner-burning heat.

Convenience and Sustainability

Combines the efficiency and eco-friendliness of biomass heating with the ease and automation of a modern system—delivering dependable warmth without the labor of traditional wood-burning methods.

Flexible Heating Capacity

Sized for residential heating but can also extend heat to additional buildings or support select commercial applications.

Confidence for the Long Haul

Combines USA-manufactured 409 Titanium Enhanced Stainless Steel construction with a 20-Year Limited Warranty for lasting confidence in your heating investment.

Flex Automated Pellet Stoves

How it Works

Diagram of stove
1

Ambient air enters

Ambient combustion air enters the rear of the stove through a PLC-controlled actuated damper.
2

Air fuels combust

The negative draft fan draws the combustion air through the Omni-O.2 burn pot, supporting both primary and secondary combustion processes. 
3

Heat is recovered

The resulting super-heated air passes through a series of primary heat exchanger tubes and across the bottom of the boiler, providing substantial heat transfer. 
4

Air exits

The hot exhaust air then flows through a series of secondary exchanger tubes for additional thermal efficiency before the low-temperature exhaust gases exit through the Class-A chimney.