



Improve the Integrity of Your Home Heating Fuel.

All-season Conditioner for Ultra-Low Sulfur Heating Oil & Biodiesel Blends
Formulated for Indoor Tanks
Modern heating fuels are no longer the stable, forgiving products they once were, and today’s fuel distributors are now expected to deliver not just heat, but reliability, cleanliness, and protection across all seasons.
Our HeatDoc All-season Conditioner (ASC) provides an affordable solution to modern fuel quality challenges. ASC combines a stabilizer, corrosion inhibitor, dispersant, and yellow-metal deactivator to deliver cleaner fuel, improved storage integrity, and enhanced protection for your customers’ heating systems.
Differentiate your home heating fuel with ASC and gain a competitive advantage, reduce service calls, and increase customer satisfaction and loyalty.
HeatDoc All-season Conditioner: Key Components
Together, these components work synergistically to deliver cleaner fuel, improved storage stability, and enhanced protection for your customers’ heating systems—providing a reliable, value-added solution you can confidently stand behind.
Preserving fuel quality from storage to combustion.
The stabilizer is unique in that it preserves both sides of blended fuel—preventing oxidation and degradation in the distillate (ULSD/heating oil) portion, and protecting the biodiesel fraction against acid formation and oxidative instability. This decreases gum, varnish, and sludge formation, resulting in cleaner-burning fuel, reduced filter plugging, and enhanced performance throughout the heating season.
Protecting tanks, lines, and system components.
The corrosion inhibitor forms a protective barrier on metal surfaces, helping prevent rust and deterioration caused by water and acidic byproducts. This helps extend equipment life, reduce maintenance issues, and improve long-term storage integrity.
Controlling contaminants before they become problems.
The dispersant keeps sludge contaminants finely suspended in the fuel, allowing them to pass harmlessly through the system and be consumed during normal combustion. This results in cleaner fuel systems, fewer service interruptions, and more reliable fuel flow.
Neutralizing the catalytic effects of copper and brass components.
Copper and brass heating system components can catalyze fuel oxidation, leading to the formation of deposits. The yellow-metal deactivator neutralizes these catalytic effects, reducing metal-induced fuel degradation, improving fuel stability, and protecting heating equipment.

All-season Protection and Performance
Optimize your home heating fuel with HeatDoc ASC and experience its many benefits:
Stabilizing Fuel for Long-Term Storage
Optimizing Fuel Performance
Minimizing Tank Sediment
Reducing Gum, Varnish & Sludge Formation
Slowing Down the Oxidation Process
Reducing Metal-induced Fuel Degradation
Solving Legacy Sludge Problems
Reducing Service Calls & Improving Customer Satisfaction



5-gallon
pails



55-gallon
drums



275
gallon totes
>> Bulk delivery available. Contact us to discuss smaller packaging options.

Real-World Results
Since treating its Bioheat® fuel with HeatDOC ASC, MacFarlane Energy, a full-service heating company, is delivering cleaner, more stable fuel and avoiding preventable service problems.
"Any time we can prevent a fuel-related service call before it happens, it improves the experience for both our customers and our service team."
— Scott E. MacFarlane, Vice President, MacFarlane Energy
Beyond a Home Heating Fuel Additive
We don’t just sell home heating oil additives; we partner with distributors to optimize fuel efficiency and performance.
Fuel Testing & Monitoring

Schedule a FREE fuel analysis to identify performance issues.
Custom Formulations

Get a custom treatment based on your regional fuel chemistry.
Ongoing Support

Work with a dedicated fuel specialist who understands your needs.


Safeguard your home heating fuel year-round.
Treating your fuel with our HeatDoc All-season Conditioner is a small investment that pays off in reduced emergency service calls, fewer employee headaches from avoidable night and weekend fuel-related no-heat calls, and ultimately, increased customer loyalty. Contact our home heating fuel experts today to learn more about the benefits of ASC and request a FREE fuel analysis.



