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Waste oil boilers

Waste Oil Boilers


A true waste oil burner

A true waste-oil boiler

Our waste oil boiler is built specifically for waste oil.

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Get warmer faster

With our true-vessel system you get hot water on demand without any wait time.

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Get warmer faster
Burn more fuels

Recycle more fuels

Cleanly burn and blend the widest range of oils—5 to 90 weight, including synthetics—with no manual adjustments necessary.

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Tip top. Clean Through.

The swing-away door and breach give you easy access for ash removal. In a matter of minutes, your heat exchanger will be at peak efficiency.

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Easiest to clean
Advanced Controls

Advanced controlsSmart enough to cut fuel by 20%

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On-Board Air Compressor

On-Board Air CompressorThe perfect airflow, only when you need it

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Potable Water

Potable WaterHeat potable water for car washes, kitchens, and bathrooms
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The heart of our heaters

It starts with the best combustion. EnergyLogic’s burner meets the challenges of burning waste oil with best-in-class technology that delivers the most heat while requiring the least maintenance.

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EL 375B Boiler

  • BTU Input: 375,000 BTU (110 kW) per hour
  • Fuel Flow Rate: 2.7 gallons/hour (10.2 liters/hour)
  • Water Output Temp: 230º F (110º C)
  • Capacity: 43 gallons (162.75 liters)
  • Exhaust flue diameter: 8”
  • Dimensions: 45”H x 28”W x 60”D
  • Weight: 1042 lbs.
Boiler Model EL375B Product Photos

EL 500B Boiler

  • BTU Input: 499,000 BTU (146 kW) per hour
  • Fuel Flow Rate: 3.6 gallons/hour (13.6 liters/hour)
  • Water Output Temp: 230º F (110º C)
  • Capacity: 52 gallons (200 liters)
  • Exhaust flue diameter: 10”
  • Dimensions: 45”H x 32”W x 68”D
  • Weight: 1160 lbs.
Waste Oil Boiler Model EL500B Product Photos

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Furnace boiler installation illustration

Quick Installation. Easy Operation.

Be up-and-running fast with one of our six complete systems. From the boiler, to the tank, to mixing valve, everything is included.

Stacked on racks illustration

Big on BTUs, low on space.

Our boilers not only feature a small footprint, they’re designed to allow for stacking.

In floor hydronic installation illustration

Warm the floor

Safely heat the entire floor, making you feel warm and cozy by heating from the feet up! Melt ice on driveways and rooftops, and dry all wet surfaces.

Domestic hot water installation illustration

Domestic hot water

Install our optional domestic hot water coil to use your boiler to heat domestic water.

Custom solution complete illustration


Our custom solutions often involve combining the unmatched heat of our waste oil furnaces with the power of an HVLS "big" fan. Our fans enhance the effect of heat. They’re designed to redistribute warmth, pushing heated air down from the ceiling to the shop floor where it’s needed most.

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Furnace boiler installation illustration
Stacked on racks illustration
In floor hydronic installation illustration
Domestic hot water installation illustration
Custom solution complete installation illustration

Made for waste oil

Using waste oil for fuel presents a unique set of challenges. Our tanks turned those challenges in industry-leading features.

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Example accessories

Our accessories

More choices than anyone, for a custom configuration for everyone.

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Waste oil boiler

When it comes to waste oil boilers, there really is no other choice than EnergyLogic. Why? Because EnergyLogic is the only manufacturer to engineer a boiler from the ground up for waste oil combustion. On the other hand, the competition just takes traditional designs and then implements makeshift modifications to burn recycled oil. Even worse, you’ll find competitors selling recycled oil boilers that really aren’t even boilers! Whereas EnergyLogic boilers use a true-vessel system, the competition uses a system of heated coils. So why does that matter? With a true-vessel you get heat on-demand, rather than having to wait. Also, an open vessel is expansive and easy-to-access, making maintenance a breeze. Coil systems, by contrast, collect ash between the crevices of their narrow tubing, resulting in rigorous and frequent maintenance that wastes time and money.

EnergyLogic takes pride in the waste oil boilers we produce, but we are especially proud that we are a solutions company. When investing in a used oil boiler system you must have a partner committed to understanding your facility and ready to create a custom configuration suited to your highly individual work environment. Our used oil boilers are already at work in many different industries and facilities, and we frequently partner with car dealerships, heavy equipment services, and transportation companies to heat everything from garages to workshops to office space. EnergyLogic boilers even de-ice parking lots and rooftops. Need hot, potable water? Our boilers can provide hot water to car washes, kitchens, bathroom and shower facilities, making them the most versatile product of their type on the market.

Automotive industry mechanic
Satisfied mechanic

EnergyLogic is the trusted name in waste oil heating because we have the best combustion, delivered by the American-made Beckett burner. The efficiency of our waste oil burner produces the highest heat-rise, burning away more of the impurities that stay behind in the form of ash. And less ash means that EnergyLogic used oil boilers have the industry’s longest maintenance interval. Now that’s comfort with convenience.

EnergyLogic offers the most waste oil accessories of any company so that your waste oil boiler solution is perfectly designed to fit your business and your unique floor-plan. Our boilers are easy to operate and a breeze to maintain. The air compressor silencer allows for extremely quiet operation by reducing the noise of the air compressor by 6dB! The air compressor silencer is easy to install and fits in a kit with all of the parts you need. EnergyLogic also offers a remote pressure-gauge kit designed to monitor the fuel pump on the waste oil boiler, even if the fuel pump is hard to see. The pressure gauge kit is installed below the preheater to monitor the system pressure and ensure reliable service. When it’s time to clean, our boiler brushes are custom designed to fit our systems and quickly clear ash from the boiler tubes. That way your team wastes less time cleaning and more time being productive in a warm, safe and comfortable environment.

That’s what good feels like.

Energylogic parts and accessories

How a Waste Oil Boiler System Works

A waste-oil-boiler building-heating system is made up of two major parts - the waste-oil burning boiler that heats up the water/coolant, and the hydronic piping network that pumps and carries the heated water/coolant around the space. The heat is usually radiated from the pipes in a radiant floor and/or from convectors and radiators evenly spaced throughout the building.

There are several advantages to this type of radiant heating and the benefits are multiplied when you calculate the cost savings of using waste-oil-boiler heating. The water or coolant used in the radiant hydronic system can absorb more heat and holds heat much longer than air. Waste-oil boilers heat buildings and spaces much more evenly and are often used to heat the mass of the building, leading to long slow releases of the stored heat.

Backed by our industry-leading warranty and money-back guarantee.

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