← Boilers
Pristine Series
99% Combustion Efficiency. Up to 60% Less Wood. EPA-certified gasifier for maximum heat output.
409 American Stainless Steel • American Made in International Falls, MN • 20-Year Warranty
99% Combustion Efficiency. Up to 60% Less Wood. EPA-certified gasifier for maximum heat output.
409 American Stainless Steel • American Made in International Falls, MN • 20-Year Warranty
Every Pristine boiler is engineered to burn wood more completely maximizing the heat from each stick of wood while reducing effort.
Turbulators keep tubes clean and efficiency high with less maintenance.
Dense firebrick protects the firebox through years of hard use.
Illuminated and reliable panel gives real-time status at a glance.
Seals tight for a safer, more efficient burn.
Stainless steel door hardware seals for operation that does not fail.
Commercial grade fan and actuator for years of reliable service
Most outdoor boilers push air up through the wood from below. The Pristine Series does the opposite: with the firebox sealed, air is pulled downward, forcing smoke and combustible gases down through the ash bed and into a secondary combustion chamber where they're reignited at high temperature. The result is a burn that's nearly smokeless when loading wood, wastes less heat up the chimney, and is far more forgiving about exactly how the wood is loaded.
SECONDARY COMBUSTION TEMP
FLUE EXHAUST TEMP
COMBUSTION EFFICIENCY
Gasification pulls more usable heat out of every load of seasoned firewood, cutting how much you split, stack, and load.
Secondary combustion burns off gases a traditional boiler would send up the chimney as smoke and creosote.
409 stainless construction and a 20-year limited warranty back your investment for decades of heating seasons.
Firewood, ash, and combustion stay outdoors while comfortable heat reaches your home, shop, or barn.
Wood is a renewable fuel that can offset reliance on propane, fuel oil, and other conventional heating costs.
Automatic refiring, digital controls, and long burn times mean fewer trips outside to tend the fire.
A look inside the Pristine Series firebox and heat exchanger.
Extra-large, insulated door for easy fuel loading with the roller-latch system.
Wide, insulated access door for cleaning the secondary combustion chamber.
A sealed firebox that only burns when air is introduced, distributed evenly by the air panels.
Injects preheated air directly at the combustion zone to ignite combustible gases.
Reaches up to 2,300°F for near-complete fuel combustion.
Turbulators clear fly ash buildup with a simple push-and-pull motion.
Fully removable rear door for easy inspection and plumbing access.
Exhaust runs as low as 300°F, versus 800–1,000°F on conventional flues.
Consistent, comfortable heat throughout your home, all winter long.
Integrates with your existing hot water system — ask your dealer about configuration.
Even, comfortable heat for homes, shops, and garages with hydronic flooring.
Works with hydronic or forced-air systems, depending on your setup.
A centralized system can heat multiple farm buildings when properly sized.
An efficient outdoor heat source for recreational water applications.
Compare the Pristine models we carry.
SPEC
7200E
7300E
7400E
Estimated Weight
1,950 lbs
2,650 lbs
2,950 lbs
Width
48″
50″
53″
Length
74″
79″
85″
Height
78″
87″
93″
Firebox Length
28″
32″
36″
Chimney Size
6″
6″
8″
Water Capacity
180 gal
235 gal
290 gal
Approximate Coverage
2,000–3,000 sq ft
4,000–5,000 sq ft
8,000–10,000 sq ft
BTUs
125,000
221,000
325,000
Insulation (Roof/Walls)
R30
R30
R30
409 Stainless / EPA Certified
Yes / Yes
Yes / Yes
Yes / Yes
The Pristine Series is rated up to 99% combustion efficiency thanks to its negative-pressure gasification design.
Compared to older, non-gasification outdoor boilers, yes — actual savings depend on how well your unit is sized and how well-seasoned your wood is.
Well-seasoned hardwood gives you the best efficiency and the cleanest burn.
The self-cleaning heat exchanger tubes cut down on maintenance, but plan on a monthly nash and chamber cleaning during the heating season.
Pristine uses gasification for the highest efficiency and lowest wood use; Multi Pass uses proven triple-pass combustion at a lower price point.
See the Multi Pass Series →Every Pristine Series boiler is backed by Crown Royal's 20-year limited warranty.
Full warranty details →Yes, with the right system configuration — talk with us about what that looks like for your home.
It depends on square footage, insulation, and what else you want to heat (hot water, a shop, a pool). Contact us and we'll help you size it right.