CB-3250, Waste Oil Furnace, Used Oil Furnace, Furnace, Clean Burn, Model CB-1750, 325,000 BTU/hr.


The largest of our four Clean Burn low profile models, the Model CB-3250 waste oil furnace is rated at approximately 325,000 BTU/hr. and is UL listed for use as a unit heater or central (ducted) furnace.

This unique low-profile unit provides more installation and functional options than any other waste oil furnace. The low profile is ideal for limited ceiling heights, and the range of installation options is unsurpassed.

Clean Burn waste oil furnaces are engineered from the ground up to burn a wide range of waste oils for free heat, and comply with all EPA regulations. Your Clean Burn distributor is a fully trained and highly experienced expert in waste oil combustion technology. With Clean Burn you get a superior product, unrivaled support and the greatest return on your investment for years to come.



 Engineered from the ground up to burn waste oils

Patented heat exchanger generates more heat

Unique non-welded flue tubes for longer service life

Advanced burner preheats oil to optimize combustion

Swing-away burner and door make service easy

Longest cleaning interval of all units in its class

Lower stack temperatures, higher heat output

Automatic flow control means no fuel adjustment required

Ideal for unit heating or with a Clean Burn Recycling Center

Unequaled service and support from Clean Burn Distributors

Model CB-3250Specs.
*Maximum BTU/hour325,000 (95.3 kW)
*Maximum oil consumption2.1 GPH (7.91 L/h)
FuelsUsed oils: Crankcase,ATF, hydraulic
Fuel oils: #2, #4, and #5 fuel oil
Air flow output (CFM)Unit heater 3300
Central furnace (ducted)
0.25 SPWC (in.) 3150
0.30 SPWC (in.) 2900
*Air compressor required2.5 CFM @ 25 PSI
(4.25 m3/h @ 1.7 bar)
Stack Size8 inch dia.(20cm dia.)
Furnace Dimensions, Assembled121” L x 31.25 W x 35 H
(307cm x 80cm x 89cm)
Approx. Weight (uncrated)641 pounds (288.7 kg)
Electrical Requirements230 VAC 60 Hz, single phase
30 A circuit breaker

*Values indicated above are nominal. Actual values will vary depending on fuel and installation.


CB-3250 User Manual

CB-3250 Bid Specs