Combining respect for the environment and performance, the Austral III is ideal for heating spaces up to 2,300 ft². This non-catalytic appliance is among the most ecological on the market with a particle emission rate of 0.95 g/h. Its maximum power of 90,000 BTU/h will keep you warm all winter long. Its firebox is specifically designed for loading of logs over depth. The Heatflow S5 is a galvanized steel cabinet that can be installed on top of your appliance to efficiently distribute heat to other rooms in your home. It's a long-lasting and safe way to get the most out of your auxiliary heating source!
The Heatflow S5 is a galvanized steel cabinet that can be installed on top of the Austral III to efficiently distribute heat to other rooms in your home (up to 4). Its design is simplified for assembly and installation.
Included: Heatflow S5 system, steel legs with ash drawer, top air deflector, ceramic glass, ash lip, air damper
▪ Up to 10 hours burn time
▪ Up to 20" logs
▪ 3.3 ft³ firebox
▪ Heavy duty 5/16" steel top reinforced with C-Cast heat shield
▪ EPA certified
▪ Proudly made in Canada
▪ Limited lifetime warranty
Any installation must be done according to the data and drawings detailed in the owner’s manual.
Fuel type | Dry cordwood (16" recommended) |
Heating area(9) | 900 - 2,300 ft² |
Overall firebox volume | 3.3 ft³ |
EPA loading volume | 2.67 ft³ |
Maximum burn time(9) | 10 h |
Maximum heat output-dry cordwood(4) | 90,000 BTU/h (26.4 kW) |
Minimum overall heat output rate(4) (5) | 15,841 BTU/h (4.64 kW) |
Maximum overall heat output rate(4) (5) | 57,041 BTU/h (16.72 kW) |
Average overall efficiency-dry cordwood (HHV)(5) (6) | 71.1 % |
Average overall efficiency-dry cordwood (LHV)(5) (7) | 76.6 % |
Optimum efficiency(2) (3) | 78 % |
Optimum heat transfer efficiency(8) | 74 % |
Average particulate emission rate(1) | 0.95 g/h |
Average CO(10) | 61.3 g/h |
Size | Extra Large |
Alcove installation approved | Yes |
Mobile home approved | Yes, with fresh air intake |
Certified according to applicable standards | By an accredited laboratory (CAN/USA) |
Overall dimension (Width) | 23 3/4" |
Overall dimension (Height) | 32 1/8" |
Overall dimension (Depth) | 32 1/2" |
Premium quality blower included (CFM) | Optional |
Combustion technology | Non-catalytic |
Stainless-steel secondary-air system | Yes |
Flue outlet diameter | 6" |
Distance-center of the flue outlet to back unit | 7 1/2" |
Distance-center of the flue outlet to side unit | 11 7/8" |
Recommended chimney diameter | 6" |
Type of chimney | CAN/ULC S629, UL 103 HT (2100 °F) |
Minimum chimney height | 12' |
Door type | Single, glass with cast iron frame |
Door opening size (Width) | 16" |
Door opening size (Height) | 12" |
Glass type | Ceramic glass |
Glass surface - W x H | 14 5/8" x 11 3/4" |
Steel thickness-body | 3/16" |
Steel thickness-top | 5/16" |
Firebox size (Width) | 19" |
Firebox size (Height) | 14 1/8" |
Firebox size (Depth) | 21" |
Log positioning | Loading over depth |
Maximum log length | 20" |
Firebox lined with refractory bricks | Yes |
Baffle type | High quality vermiculite |
High-efficiency certified appliance | Yes, EPA 2020 approved |
Canadian Standard (emissions) | CSA B415.1-10 |
USA Standard (emissions) | EPA |
Canadian Standard (safety) | ULC S627 |
USA Standard (safety) | UL 1482, UL 737 |
Warranty | Limited lifetime |
Shipping weight | 410 lb (186 kg) |
{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}