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  • Save Fuel,
    ​Lower Emissions

    We use proven technology to reduce fuel use and emissions in oil-fired boilers & furnaces.

Rentar Fuel Catalyst with fuel lines

The Technology

It is a small cartridge that screws into your fuel line and contains rare earth catalysts that change the molecular structure of some of the fuel constituents to give a cleaner and more efficient combustion. No magic or magnets, just chemistry and physics.

The Results

Reduces Fuel Consumption

Independent labs and customer-run tests have shown fuel savings from 6% to as high as 30% in oil-fired boilers and furnaces. We have many test results we can share with you. Results may vary based on the application, type of boiler/furnace, and the type of fuel used.

Lowers Emissions

Results vary widely because it's super complex, but we've seen soot and PM lowered >50%, NOx, CO & CO2 lowered >40%, VOCs lowered >60%. Again, we have TONS of independent test results we can share with you. Results may vary based on the application, type of boiler/furnace, and the type of fuel used.

"This is to certify that the fuel catalyst has been installed on our generators and boiler applications. The performance of the fuel catalyst has been good and about 6% saving achieved."

-Mahindra & Mahindra Ltd. Tractor Division

Lower emissions AND save fuel? 

We have the only technology we know of that reduces emissions while saving fuel. Most methods of lowering emissions increase fuel usage but if you alter the fuel before you burn it, it burns more efficiently meaning less fuel wasted and lower emissions from the combustion. It's a very different way to tackle the problem and get the double benefits.

Cost & CO2 Reduction Calculator

Some of Our Customers

We are pleased to confirm that we could achieve a fuel savings of 9.5% plus on our furnace oil fired forging furnaces of 7 tons capacity. We strongly recommend Rentar Fuel Catalyst for other furnace users for reduction in fuel consumption and black smoke.

-Ameet Industries, Raigad India

How can we help you check this out?

Many customers are skeptical at first. We can relate. We offer great testing & validation support.

We have helped many, many customers in all types of equipment test these catalysts. It's done with almost NO disruption to your operations. We help you design the test to get statistically valid data to base your investment decision on. Contact us and let's talk about that.

Rentar Fuel Catalyst for Boilers & Furnaces

Boilers usually see a 6%-30% fuel savings. Variety in equipment, age, fuel, etc. give a wide variety of results. We recommend testing your conditions. Results may vary based on the application, type of boiler/furnace, and the type of fuel used.

Rentar Fuel Catalyst for Boilers & Furnaces

Emissions are becoming more of an issue for all operators. This technology offers more significant emissions reduction for lower cost than any other solution we know of. Contact us or go see the emissions page for more info.

A school district reports...

The Palmer School District near Springfield, MA, installed these on their boilers and are saving $100,000 per year on their heating costs. They averaged fuel reduction of 20% and have installed them on all boilers across the whole district.

Let's talk emissions

If emissions are your biggest concern, this technology can reduce emissions at a lower cost than any other technology we know of - and it will quickly pay for itself in fuel savings.

Why Zelkam?

We have become a leader in applying this technology to the diesel equipment industry. Brian Livingston, our president, is an experienced Chemical Engineer that spent almost 20 years in Caterpillar's Diesel Engine Division. He combines his decades of experience with Rentar's 20-year history to provide expert advice and guidance on this unique technology. We have saved customers millions of liters of diesel and many thousands of tons of CO2. Reach out and have an honest conversation with him about it and what it could mean for your operations.

Take the next step - reach out...

If you use a lot of fuel oil, we can help you use less.

If you make a lot of emissions, we can help you make less.

It's worth a phone call!