Aspen Series Features
The Aspen Series includes a number of attractive features:
- Digital Control Panel: The digital control panel allows the operator to regulate the furnace’s operating temperature and heat output.
- Plug-and-Run Operation: The Aspen Series connects to existing outdoor wood furnace plumbing with little or no modifications.
- Secure Lockable Door: The Aspen Series’ pressure-sealed locking door prevents unauthorized access and keeps the heat in the furnace.
- Built-in Exhaust Curtain: The exhaust curtain allows the smoke to escape through the normal exhaust flue when loading the furnace during operation|
- Convenient Night Light: There is no need to worry about short daylight hours with the Aspen’s external night light
- Accessible Rear Panel: The rear panel is designed for easy access cleaning and installation
Model |
95** | 175 | 350 |
8-hr Sustained Output |
70,000 BTUH |
110,000 BTUH |
270,000 BTUH |
Max. Rated Output |
120,000 BTUH |
230,000 BTUH |
420,000 BTUH |
Comparable Heating Area * (square feet) |
up to 2,500 SF | up to 7,000 SF | up to 12,000 SF |
* square footage based sizing is unreliable, always base sizing on sustained output
** Available 2009

Each Greenwood Aspen Series outdoor wood furnace is:
- Clean. The Aspen Series operates cleanly burn wood completely, leaving virtually no particles to create smoke or ash.
- Efficient. In side-by-side tests, the Aspen Series uses 50% less wood than a traditional outdoor wood furnace while producing the same amount of heat.
- Economical. Reduces your overall heating costs – saving up to 70% of your heating bill.
- Certified Safe. Meets strict UL and CSA standards for safe operation.
- Low Maintenance. Aspen Series models do not need to be cleaned as often as wood stoves or inefficient outdoor furnaces.
- Simple. The design removes known failure points that are part of all dual-fuel systems and is designed for easy maintenance.
- EPA Qualified. The Aspen Series exceeds new strict emission limits for sale in areas where traditional outdoor wood boilers have come under strict regulation.


