Heatdoc™ – Advanced Fuel Solutions

Better, safer, cleaner.


Just like you, home heating oil systems perform better and last longer when they’re cared for properly. Thankfully, there’s an easy and economical way to do it. HeatDoc™ is a field proven proprietary fuel conditioner that constantly cares for your heating oil system by ensuring both the equipment and fuel that it depends upon is functioning at peak performance 24/7, 365 days a year.

For over a decade HeatDoc™ has provided the most comprehensive and economic protection available for both the fuel dealers and consumers seeking reliable home comfort.


Heatdoc™ logo

The worry free health care plan for home heating systems


Heatdoc DifferenceWith a unique balance of three stabilizers, HEATDOC™ not only keeps today’s fuel fresh but also improves the latest blends of ultra-low sulfur and biodiesel keeping your fuel healthy today and into the future. It cleans your heating system by reducing sediment build up that may already be in your tank, pipes, filters, and nozzle. HEATDOC™ also inhibits corrosion and rust in your tank and fuel lines. The result is healthier fuel and heating system that runs more effectively while improving equipment life expectancy. HEATDOC™ is always on call keeping your home heat-healthy!

Untreated fuel vs. heating oil treated with Heatdoc™

How Heatdoc™ works

Before treating with Heatdoc™

After treating with Heatdoc™

What Our Customers Are Saying

“AFS’ home heating and diesel additives are the underpinnings of our promise to deliver the highest level of fuel quality and dependable service year-round.” 

Jamie Densmore, President Densmore Oil

Have You Checked Your Fuel Lately?

Why you should and how we can help reduce your spend and prevent future service calls.