Columbia KWO Waste Oil Boiler Review

columbia kwo waste oil boiler The most common places you will see a Columbia KWO Waste Oil Boiler is in Truck and Car Dealerships, Fast Oil Lube Shops, Floor and Radiant Heat Applications, Greenhouses, Sheds and even Barns. Some of the technical specs on the KWO Waste Oil Boiler are the Waste Oil Gallons per Hour is 1.5 minimum and 2.5 maximum. The minimum Input of Btu’s are 210,000 and the maximum is 350,000 btu’s.

The Gross Minimum Output of Btu’s are 168,000 and the maximum is 280,000. There is a Gross Horsepower of 4.8 minimum and 8 maximum. The unit can hold 36 gallons of water volume and gallons per hour with a Single Coil 100 degrees temperature rising is 176 degrees minimum and 264 degrees maximum.  You can use any one of these fuels for the Waste Oil Boiler, Crankcase Oil, Transmission Fluid, Hydraulic Fluid, Vegetable and Cooking Oil and even Bio-diesel fuel.


The KWO Waste Oil Boilers are for commercial uses only; they are not designed or intended for residential homes. The Waste Oil Boilers come with the Columbia’s own patented Shenandoah Burner. This burner is easy to clean and has its own-patented slide out gun assembly and quick connect. Here are some of the required measurements that you will need the boiler height is 41″, the depth with the burner is 54″, and the boiler with controls are 24″.

Some of the other standard features of the KWO Waste Oil Boiler are the ASME Certified Boiler and the ASME Certified Relief Valve. Also included are the Oil Pump and Filter Kit plus the manual. The boiler comes Insulated Flush Jacket, which helps ward of corrosion, as well as protects the boiler from any heat loss. The maximum operating pressure on these units are 30 psi for water.

The Waste Oil Boiler from Columbia comes with Theraltimeter Gauge, an Operating and manual High Limit Aquastat and a Low Water Cut Off. The electrical requirements are 115 volts, 60 Hz and 15 amps. There is 220/50 with 7.5 amps available. The KWO has some great safety features that ensure the 100% safety of the boiler. The boiler also comes with a Cleaning Brush for easy maintenance.

There are 3 options available for the KWO Waste Oil Boiler, the Oil Storage Tanks, Hydronic Unit Heaters and Hydronic Duct Coils. In order to get the maximum efficiency you may need to install baffles to the system. You can also have the choice of a burner /nozzle combination that will match your heating requirements.  There is also a tankless coil option, which is perfect for car wash applications.

No matter what application you are using the Columbia KWO Waste Oil Boiler; it is one of the best and efficient Waste Oil Boilers in the business. You will get a hinged burner door to provide easy access for maintenance and inspection as well as a removable flue box and rear turn around for maximum cleaning. Columbia is one of the best in the business, so if you are in the market for a new boiler, look into a waste oil boiler, you won’t be sorry.

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  • One Response to “Columbia KWO Waste Oil Boiler Review”

    1. karensepth says:

      We get our oil changed at the local valvoline and you can hear one of these operating in the basement. I would imagine this is a good use for the idea that it would get thrown away otherwise?

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