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Pellet Furnace Caddy Alterna II

SKU: PF09010


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Size29 3/8″ W X 57 5/8″ D X 49 1/2″ H
Hopper capacity240 lb (109 kg)
Average particulate emissions rate (1)0.442 lb/mmBTU (0.190 g/MJ)

Maximum recommended heating area by climate zone

The Caddy Alterna II pellet furnace in the Caddy series

The Caddy Alterna II pellet furnace answers the needs of homeowners seeking the comfort of a wood-heating system without its inconveniences. Tested to the latest CSA B415.1-10  standards, the Caddy Alterna II pellet or pellet+electric combination furnace will please the most discerning consumers looking for an efficient and eco-friendly heating solution.

Great heating autonomy

The Caddy Alterna II pellet furnace offers great heating autonomy due to its 240 lb (110 kg) hopper capacity. Furthermore, its optional electrical system allows it to continue to operate when the furnace runs out of pellets.

Maintenance-free components that prevent unnecessary service calls

Other important features of the Caddy Alterna II include a self-cleaning bottom feed system that keeps the burn pot free from deposits; maintenance free components (no need to adjust, calibrate or oil); and a self-diagnostics electronic interface that prevents unnecessary service calls.

Unmatched reliability

All components entering the manufacture of the Caddy Alterna II are carefully selected and sourced from reputable vendors. With an all stainless steel combustion chamber and burn pot, the heart of your furnace is guaranteed to last. 

Alternate source of heat

With the Caddy series furnaces you will never again be dependent on a single source of energy to guarantee the comfort and safety of your family. The Caddy Alterna II allows two different configurations: pellet only or combined pellet+electric.


Fuel typePellet (Premium grade or better) (3)
Recommended heating area-ft² ()600 – 3,000
Hopper capacity240 lb (109 kg)
Maximum burn time ()200 h
Maximum heat input rate (4)101,000 BTU/h (29.6 kW)
Overall heat output rate < (5)25,216 BTU/h (7.4 kW) to 72,447 BTU/h (21.2 kW)
Average overall efficiency (6)67.90% (HHV) (7)73.20% (LHV) (8)
Delivered heat output rate (min. to max.) (9)22,537 BTU/h (6.6 kW) to 64,737 BTU/h (19 kW)
Average delivered efficiency (min. to max.) (10)60.50% (HHV) (7)65% (LHV) (8)
Optimum efficiency (11)82.40%
Burn rate1.2 lb/h – 11.8 lb/h
Average particulate emissions rate (1) (12)0.442 lb/mmBTU (0.190 g/MJ)
Average CO (13)15.41 lb/mmBTU (6.63 g/MJ)
Average electrical power consumption (14)860 W

(1) Based on delivered heat output.

(2) Values are as measured per CSA B415.1-10, except for the recommended heating area, hopper capacity, maximum burn time and maximum heat input rate. Results may vary depending on pellet quality, density, length, and diameter.

(3) Grades of pellet fuel are determined by organizations such as Pellet Fuels Institute (PFI), ENplus and CANplus.

(4) Based on the maximum burn-rate and a dry energy value of pellet at 8,600 BTU/lb.

(5) Overall: Radiated and delivered heat together.

(6) Efficiency based on radiated and delivered heat when allowing cycling from high to low burn to simulate thermostat demand. LHV % is based on manufacturer’s estimation.

(7) Higher Heating Value of the fuel.

(8) Lower Heating Value of the fuel.

(9) Delivered: Remotely provided to other rooms through ducting.

(10) Efficiency based on delivered heat when allowing cycling from high to low burn to simulate thermostat demand. LHV % is based on manufacturer’s estimation.

(11) Optimum overall efficiency at a specific burn rate (LHV).

(12) This appliance is officially tested and certified by an independent agency.

(13) Carbon monoxyde. Based on overall heat output.

(14) Unless stated otherwise, measures were taken directly at the main power source and include all electrical components present in the appliance.


Thermostatic or manual modeYes
High-efficiency certified applianceCSA B415.1-10
Electronic igniterYes
Automatic or manual adjustment of combustion air supplyYes
Chimney diameter4″
Flue outlet diameter4″
Type of chimneyULC/ORD-C441, CAN/ULC S609, UL 641 (TYPE L)
Baffle typeSteel
Approved for a mobile home installationNo
Shipping Weight573 lb (260 kg)
Door typeSingle, glass with cast iron frame
Glass typeCeramic glass
Glass surface – dimensions (Width X Height)3″ X 16″
Premium quality blower included (CFM)G-10 1,650
Blower (hp / speed / CFM)1/2 / 4 / 1,650
Filter – dimensions (Width X Height X Depth)16″ X 20″ X 1″
Overall dimension (Height)49 1/2″
Overall dimension (Width)29 3/8″
Overall dimension (Depth)57 5/8″
Easy-to-access ash drawerYes
Air return plenum – dimension (Depth or Height)16″
Air return plenum – dimension (Width)21 1/4″
Hot air plenum – dimension (Depth or Height)22″
Hot air plenum – dimension (Width)22″
Electric element – locationRight or left
Electric element – recommended (maximum output)15 kW
Electric element – other optional (maximum output)20 kW
Water loop kit – connection locationRight or left
Water loop kit – connecting pipe diameter3/4″
Water loop kit – back-up tank volume60 gal (227 L)
Canadian Standard (emissions)CSA B415.1-10
USA standard (safety)UL 391, UL 1995
Canadian standard (safety)CAN/CSA B366.1, CAN/CSA C22.2 no. 236
Tested and listed as per applicable standardsBy an accredited laboratory (CAN/USA)
WarrantyLimited lifetime
Minimum clearances to combustibles*
(Data expressed in inches. 1 inch = 25.4 mm)
Clearance – back wall24″24″
Clearance – ducts<5’=2″ ; >5’=0″<5’=2″ ; >5’=0″
Clearance – recommended for maintenance on option side24″24″
Clearance – front48″48″
Clearance – side wall4″4″
Clearance – opposite side wall24″24″
Clearance – top (measured from the platform on which the appliance is installed)**63″63″

* The information given on the certification label affixed to the appliance always overrides the information published in any other media (owner’s manual, catalogues, flyers, magazines and/or web sites).

** Some appliances have been tested with a low ceiling. Before setting up your unit, refer to the installation manual.

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