Outdoor Coal Boilers

Coal & Corn Stoves

Making it the number one choice for many consumers, Crown Royal outdoor coal furnaces, are the most energy efficient and economical way to heat, using readily available renewable resources. Our outdoor coal furnaces burn 30 % - 50% less than the competition. 

Designed to be located next to your fuel storage for convenience, the Crown Royal Stove is a non pressurized system and is normally filled once or twice a day, depending on the temperature outside. Virtually any existing heating system can be converted into heating with a Crown Royal outdoor coal furnace.

The Crown Royal Stoves, Shaker Grate Series are available in four models, all equipped with shaker grates and an ash pan. The shaker grates make it easy to burn coal evenly. With capabilities to heat multiple buildings, these four models range from 2,000 square feet to 20,000 square feet.

The shaker grate and ash pan design were purposefully developed for quick and easy cleaning. The introduction of combustion air under the grates gives a hotter and cleaner burn, while additional air is injected from above the fire, inside the firebox, reducing gases and heat loss up the chimney, producing a cleaner burn that uses less fuel. For the best corrosion resistance and heat transfer possible, our Crown Royal firebox and outer drum is a round design constructed out of 409 Titanium Enhanced Stainless Steel.

Crown Royal Stove Features

409 Titanium Enhanced Stainless Steel
Non-Stick Door Gasket
Shaker Grate System with Removable Ash Pan
Insulated - Walls R30, Roof R30
Stainless Steel Heat Transfer Tubes
Water Level Indicator
Fan Forced Draft
Safety Latch Firebox Door
Smoke By-Pass
Digital Control Panel
Class A Insulated Chimney
Secondary Combustion
20 Year Limited Warranty


Crown Royal Stove Benefits
No Mess in the House
Multiple 1-1/4" Supply & Return Connections
Works with Any Existing System
Easily Removable Rear Access Door to Plumbing Connections
Removable Ash Pan
Light for Night Loading
Cost Effective Heat Source


Crown Royal Stove Applications
Residential Homes
Commercial Buildings
Pools / Hot Tubs
Greenhouses
Domestic Hot Water
Garages & Workshops
Radiant In-Floor Heating
Barns & Agricultural Buildings

Crown Royal Stove Advantages
Clean, Efficient & Safe
UL 391, UL726 & CSA B366.1
Low Maintenance
Made in the USA
Lower Heating Costs


Crown Royal Stove Images

Water GaugeAsh PanBack DoorControl PanelHeat Transfer TubesDoor HingeFirebox Door LatchShacker GratesSmoke Bypass
Crown Royal Stove Warranty
Crown Royal Stove 20 Year WarrantyGreentech Manufacturing Inc. warrants it’s outdoor furnace, to the original owner, to be free of defects in material and workmanship for a period of twenty (20) years from the date of purchase. This warranty excludes the electrical components such as aquastats, thermostats, fans and pumps, as they are guaranteed by the manufacturer for a period of one (1) year. The cast iron rocker grates are warranted for five (5) years 100%. The door and ash pan gaskets are under warranty for a period of one (1) year from the date of purchase. Greentech Manufacturing Inc. does not warrant parts damaged by freezing, overheating, pressurization, and use of unauthorized fuels or abuse.
Crown Royal Stove Models

Crown Royal Stove Line Up
 MODELS RS7200 RS7300 RS7400 RS7500
 Estimated Weight
 1,250 LBS
 1,500 LBS
 2,140 LBS
 3,230 LBS
 Width 56" 56" 68" 86"
 Length 62" 73" 91" 100"
 Height 90" 90" 96" 111"
 Firebox Length
 32" 44" 56" 60"
 Chimney Size
 6" 6" 8" 10"
 Door Size
 20" x 20"
 20" x 20" 24" x 24"
 32" x 42"
 Supply Size
 2 - 1 1/4"
 2 - 1 1/4" 2 - 1 1/4" 4 - 1 1/4"
 Return Size
 2 - 1 1/4"
 2 - 1 1/4" 2 - 1 1/4" 4 - 1 1/4"
 Water Capacity
 150 Gallons
 200 Gallons 380 Gallons 620 Gallons
 Fan Capacity
 150 CFM
 150 CFM 150 CFM 150 CFM
 Turbo Fan
 60 CFM
 60 CFM 60 CFM 60 CFM
 Approximate Sq Ft
 2,000 - 3,000
 4,000 - 5,000 8,000 - 10,000
 18,000 - 20,000
 Approximate BTU's
 165,000 240,000
 365,000 500,000
 Insulation Roof/Walls
 R30 R30 R30 R30
 409 Stainless Steel
 YES YES YES YES
 Domestic Coil 300,000 BTU
 Optional Optional Optional Optional


Crown Royal Stoves are sold through a dealer network.  If your interested in learning more or to have an estimate done in your area call, Toll Free 866-361-7355 or submit an inquire to receive an informational packet in the mail with your nearest dealership. Click here to inquire.
Products (Total Items: 4 )