Best in Class – Waste Oil Boiler Technology. Deliver the Hottest heat for radiant flooring and potable water.

Waste Oil Heating FAQs

Your Top Waste Oil Heating FAQs Answered!

Whether it’s your first time investing in a waste oil heating system or you have specific questions about maintenance, we’ve got answers based on over 20 years of experience in the waste oil heating industry. 

Waste Oil Burner Setup

Most workspaces require an average fuel input of about 2.5 BTU/hr per cubic foot of conditioned space to maintain a comfortable temperature during the coldest time of year.

EnergyLogic offers different models of used-oil heaters and boilers that cover spaces from 3500 square feet up to 12000 square feet each. The models can mixed and matched to heat spaces of all shapes and sizes.

Many facilities can also benefit greatly from adding large HVLS or overhead and portable shop fans to their heating system to balance and distribute heat throughout their space while providing comfort and health benefits year-round.

There are many factors to consider when selecting the right waste oil burner for your space. Let us lend our knowledge and experience to your project. Contact us today.


Many EnergyLogic used-oil furnace owners have taken the DIY approach to installation. In fact, EnergyLogic designed its complete waste oil heating system specifically for making installation and maintenance as simple as possible. We also offer a full course of How-to Videos to walk you through the process, step by step… and if at any point you decide to turn it over to an expert, our extensive dealer network is standing by.

Yes, but it’s not recommended.

EnergyLogic used-oil heaters and boilers are designed to minimize or eliminate horizon runs and right angles.

Proper draft is critical to achieving a clean, efficient burn when recycling used-oil. When installing the chimney flue for a waste-oil heater, it is important to consider the eventual need to clean the pipe, as well as allowing any ash that enters the pipe to fall back into the furnace or trap for regular removal.

Offset kits of up to 30 degrees are available to align the furnace outlet with a roof penetration, or if absolutely necessary, through the sidewall of the building envelope. Elbows and extra fittings should be minimized, horizontal sections should be avoided, all portions of the flue should be accessible to a sweep, and flue should never be shared with any other equipment (even another waste-oil furnace). Watch our How-to Videos for more installation and maintenance tips & tricks.

EnergyLogic forced-air heaters are designed to be vented directly (without ducting) into the conditioned space for best results.

Units have been successfully ducted to distribute heat farther from the unit or to heat an adjacent space, but care must be taken to maintain appropriate static pressure on the blower and avoid draft issues caused by joining rooms of different airflow dynamics. If you wish to duct an EnergyLogic used-oil heater, consult both the manual and an HVAC specialist.

Where heat distribution is the main concern, an HVLS fan is a wonderful solution that works quite well with our heaters and boilers, and can extend their coverage area. Large, commercial-industrial HVLS fans can fully replace HVAC-system ductwork in large spaces, for both heating and cooling. HVLS fans have the added benefit of improving indoor air quality and reducing condensation and sweaty slab syndrome. Cost savings from adding HVLS fans can quickly recoup the investment while comfort and health benefits continue for many years after.

Not with EnergyLogic! An on-board air compressor comes standard, so your waste-oil burner gets clean, consistent atomizing air, allowing you to let the heater keep your shop from freezing overnight while safely shutting down your shop-air compressor. Find out more about the benefits of an onboard air compressor.

Purchasing a Waste Oil Heater

We’ll make sure you get the best deal on the system that’s right for you. We tailor each order to the customer!

EnergyLogic has a knowledgeable and growing network of dealers and technicians throughout the United States and in select international locations. EnergyLogic products are also available by special order at most major US auto-parts stores.

With pre-packaged solutions like the fuel-delivery kit and the all-in-one Complete System, EnergyLogic works to ensure a simple, universal approach to waste-oil heating. Still, each oil-recycling setup is a unique opportunity to ensure that you get the most value for your investment.

Rather than post prices for a product that may not be optimized for you or your local guidelines, we make sure that you get help from an experienced dealer representative to make your solution just right.

Contact us and we’ll connect you with the expert in your area.

Each gallon of recycled waste oil saves you $1-$7.

By offsetting or eliminating heating and waste-oil disposal costs,  an EnergyLogic used-oil recycling system can save you thousands of dollars per year (or even per month, depending on your facility) and will generally pay for itself within the first few years of operation. With our financing options, you can start saving immediately without paying out-of-pocket.

Take a look at our Estimated Return on Investment Calculator to help you get an idea of just how much your waste oil could be worth when you start using a waste oil burner.

EnergyLogic stands by our products and we’re committed to offering the highest quality. That’s why we back up our manufacturer’s warranty with a money-back guarantee!* We’ll even throw in an extra year of warranty for registering your product with us so we can offer even better support.

(* terms and conditions apply)

Heater and Boiler Maintenance

EnergyLogic has an extensive Dealer Network of qualified technicians that can service your equipment. We also offer step-by-step How-to Videos to make regular maintenance easy to DIY, if you’d prefer.

Contact us and we’ll connect you with the expert in your area.

EnergyLogic burners don’t.

Waste-oil heaters have come a long way since the DIY drip drums and fire boxes of past decades, though some manufacturers still rely on external atomizing air and oil-pressure regulators to achieve a proper, clean combustion burn. These approaches can introduce problematic moisture, dust, and fuel-delivery inconsistency into your system, requiring adjustments as air usage, temperature, and fuel types vary.

EnergyLogic makes used-oil recycling simple and customizable, so that more people can enjoy heat from responsibly converting  waste-oil into clean energy, without having to become a heater technician in the process.

EnergyLogic’s Steady-Flo Metering Pump and On-board Air Compressor provide dedicated sources of consistent fuel delivery and atomization while automatically compensating for changes in fuel density and viscosity, so you can recycle more types of oil and mess with it less.

Waste-oil heaters need annual maintenance to prepare for heating season and ash removal at regular intervals. EenrgyLogic products make this maintenance as easy as possible, allowing the most time between services.

EnergyLogic makes recycling waste oil into clean energy easy. Still, some maintenance routines are necessary to keep your system running at peak efficiency. Be sure to avoid collecting contaminates in your used-oil tank and periodically drain any water and remove any sludge that may build up. While EnergyLogic’s advanced combustion technology creates an ultra-hot flame for an exceptionally clean burn, recycled fuel oils contain some non-combustible components which are left behind in the combustion chamber as ash and need to be removed regularly. Your used-oil heater or boiler should be serviced every 500-1000 hours of operation to remove ash, change filters, and drain water or remove other contaminants from the fuel tank.

EnergyLogic makes easy service a core principle of our design, from how it’s built to how we support service. Take a look at our How-to Videos for helpful guides about the service process, or contact us to inquire about field-service visits and turn-key service agreements with our expert Dealer Network.

Burning Waste Oil

EnergyLogic used-oil burners are UL tested and rated for:

  • Used crankcase oil 5w-90w (including synthetic)
  • Used automatic transmission fluid
  • ASTM D396 No. 2 fuel oil (including Diesel).

Substances that should NEVER be introduced to the fuel supply of an EnergyLogic used-oil heater or boiler include, but are not limited to:

  • Gasoline
  • Hazardous Waste
  • Anti-Freeze
  • Carburetor Cleaner
  • Paint Thinner
  • Any Chlorinated Material
  • Parts Washer Solvents
  • Oil Additives
  • Animal Fats

If you have a question about a potential fuel that you would like to recycle, contact us and we’ll work with you to find a solution.

Depending on the model, EnergyLogic heaters and boilers burn 1-3.5 gallons per hour of running time and can recycle dozens to thousands of gallons per year… and every drop removes waste from the environment while lowering the demand for other heating fuels.

Waste-oil contains a tremendous amount of valuable energy, and EnergyLogic has spent over three decades figuring out how to get the most from it.

EnergyLogic’s advanced used-oil burner platform can convert ~140,000 BTU of clean energy from each gallon of fuel per hour of continuous run time. Of course, different facilities require different amounts of heat and fuel consumption will vary, as the heater will not need to run continuously to heat the space.

EnergyLogic develops systems for facilities of all shapes and sizes. Contact us today!

Many waste-oil burners require external shop air or charge extra for an optional on-board air compressor. EnergyLogic products come with an integrated on-board air compressor, standard.

Some waste oil can have a strong smell, depending on its source, and some waste-oil heaters and boilers do not manage fuel delivery and combustion exhaust well.

A modern used-oil heater or boiler, like EnergyLogic’s, includes systems and recommendations for managing these materials so that fumes or smells are not released into the occupied space around the furnace.

To cut down on smells and fumes, ensure that the used-oil storage tank is properly vented to the exterior of the structure and the furnace has an appropriate chimney flue installed with sufficient draft. Check out EnergyLogic’s How-to Videos for recommendations and contact us to get in touch with a factory-trained installation expert.

EnergyLogic’s used-oil combustion process combines the best technologies to create extremely high temperatures in the core of its blast flame.

EnergyLogic used-oil burners apply decades of experience and expertise to dial in combustion conditions and increase core temperatures to levels capable of burning the most challenging fuels and synthetic used-oils while improving containment and exhaust emissions. Standard options like the large preheater, Steady-Flo Metering PumpOn-board Air Compressor, and patented flame-retention head create a dynamic system that maintains clean energy conversion without the need for adjustments, making sure that you get the most value and environmental benefit from the broadest range of fuel types, with ease.

Inefficient combustion can leave unburned fuel and other impurities unconverted in the stoichiometric chemical process, giving you less heat and more smoke & ash to clean up.

The advanced combustion technology used in an EnergyLogic multi-fuel burner achieves flame temperatures hot enough to consume impurities in the widest range of new and recycled fuel oils (including synthetic oils), creating a clean burn, minimizing ash deposits, prolonging efficiency between maintenance, and lengthening maintenance cycles. This is just another example of how EnergyLogic’s heaters and boilers are designed and built to be the easiest to own and operate.

EnergyLogic Used-oil heaters put out air that is as much as 120 °F hotter than the air taken in… that’s twice the increase of most waste-oil heaters.

An ultra-hot flame and stainless-steel heat exchanger let EnergyLogic’s used-oil heaters focus on efficient, clean energy conversion to turn what would be potentially-hazardous waste oil (when spilled or disposed of improperly) into a free green fuel. The burner’s optimized clean burn and heat-tolerant combustion-chamber material allow EnergyLogic furnaces to maximize heat transfer through the forced-air handler, reducing air speed and CFM (which can create a chilling breeze when too high) and increasing ambient air temperature by 100 °F – 120 °F (as much as two-times the temperature rise achieved by the competition).

Yes, but EnergyLogic’s high stack temperature is actually a sign you’re losing less energy.

It’s true that some heat is lost through the chimney, and 100% efficiency is not possible with combustion. Air must flow through and exhaust must be removed. EnergyLogic draws on advanced engineering and decades of experience burning used-oil to optimize waste-oil combustion by slowing it down, moving less air through but at higher temperatures, and keeping more heat inside the combustion zone. This minimizes make-up air and maximizes efficiency. EnergyLogic multi-fuel units operate at 75%-80% efficiency, even on 90W and heavy weight synthetic oils, and have an intentionally-high stack temperature to ensure that whole system can easily break down and evacuate impurities, burn high-flashpoint fuels, and deliver the greatest amount of heat (and value) to your workspace.