
Koker (160,000 BTUs)
The Koker is a 160,000 BTU furnace with double wall construction, wide grate stoker, and patented thermal heat exchanger. The Koker can be used as an additional heat source or used freestanding to heat a small building. It comes with two opens at the top and front to distribute clean, warm air throughout the building.
- Up to 160,000 BTUs
- Completely Automatic
- Tested at 88 to 90% Efficiency
- Chimney vented or direct vented
- Comes complete with necessary controls and thermostat
- Stainless steel water coil
- 5 Year Warranty

A-120 Warm Air Furnace
Keystoker warm air furnaces offer a low-cost initial investment and lowest operational cost. These furnaces ensure complete circulation of filtered, warm air throughout the entire building with a large, silent air circulating blower. Heating surface is increased through the use of the downdraft heat exchanger. This permits circulation of every thermal unit of heat into the warm air lender pipes for fast distribution. A sealed ash pit assures dust-free operation.
There are five sizes available: 125,000 BTUs | 150,000 BTUs | 250,000 BTUs | 350,000 BTUs | 450,000 BTUs
- Automatic Coal Burning
- Two ash receptacle
- Produces very little pollution
- Comes complete with necessary controls and thermostat
- Stainless steel coil
- Patented, heavy duty, dependable stoker
- Three Controls
- Room Thermostat Timer
- Relay Control
- Blower and Motor
- Fiberglass Filters
- Two ASL Receptacles
Model Specifications
Specifications | A-120 | Koker |
---|---|---|
BTUs | 120000 | 160000 |
Flue Exit | Rear | Top/Rear |
Flue Size | 8″ | 6″ |
Rear Flue Height | 11″ | 5″ |
Height | 48″ | 49″ |
Depth | 49″ | 49″ |
Width | 27 1/2″ | 26″ |
Weight | 440 | 700 |
Hopper Cap | 140 lb | 240 lb |
Blower CFM | 1529 | 1500 |
Glass Door | NO | YES |
Side Clearance | 10″ | 18″ |
Rear Clearance | 20″ | 18″ |