The Classic: Use with
Makes your Central Boiler outdoor wood furnace installation quick, easy and efficient.
- Pre-assembled and ready-to-install.
-   100' and 800' coil lengths with 1" PEX lines.
-   300' coil length with 1-1/4" PEX.
-   Can be installed even in high water table areas.
-   UV protected.
-   May be installed above ground.
-   Contains both supply and return lines.
ThermoPEX is flexible pre-insulated piping that is ideal for use with outdoor wood furnaces. ThermoPEX consists of two 1 inch oxygen barrier Central PEX® lines or two 1-1/4 inch oxygen barrier PEX lines (supply and return) that are insulated with high-density polyurethane closed-cell foam insulation and a thick, durable, waterproof, polyethylene outer jacket. Most efficient and durable insulated piping system available.
It Pays to Install ThermoPEX
ThermoPEX saves energy and maximizes efficiency. Heat loss is virtually unmeasurable, less than 1 degree F over 100 feet. Greater system efficiency maximizes the delivery of heat from each pound of wood. That means you will burn less wood compared to a system using inferior insulated piping.
ThermoPEX Termination Cap,
for 1" PEX lines, p/n 2443
for 1-1/4" PEX lines, p/n 2494
The rubber termination cap slips over the end of the pipe and is secured with clamping rings.
ThermoPEX Coupling Kit,
for 1" PEX lines, p/n 2447
for 1-1/4" PEX lines, p/n 2495
The insulated, waterproof ThermoPEX Coupling Kit can be used when joining two sections of pipe.
Coil Length
PEX Size Part Number
100' 1" 2441
300' 1-1/4" 2492
800' 1" 2491



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A safe, efficient outdoor furnace that can provide 100% of your heating needs.Outdoor Boilers of Europe distributes the Classic Outdoor Wood Furnace. Heats multiple buildings, hot tubs, pools, greenhouses, domestic water and more.

While burning wood indoors can mean many problems, there is an alternative... The Classic outdoor wood furnace from Outdoor Boilers of Europe. The Classic eliminates the problems associated with indoor burning and allows you to get even more benefits from wood heat. This outdoor furnace can actually improve the indoor environment in your home or business, while eliminating the time-consuming chore of tending a traditional wood stove. In addition, tests show that the Classic is the most efficient outdoor wood furnace, with the fewest emissions.