ComStar International - Trusted HVAC, Plumbing, and Maintenance Products

Keeping heating and cooling systems in top shape requires the right chemicals and treatments. ComStar refrigerants are formulated to meet industry standards, ensuring reliable temperature control in residential and commercial settings. These products work with a variety of systems, giving technicians the flexibility they need on every job. ComStar Super Heat is another standout in this category. This specialized 8-in-1 heating oil treatment has been trusted for over 45 years, addressing common problems like waxing, jelling, and water buildup in fuel tanks. It melts ice, lowers pour points, breaks down tank residue, cleans internal parts, and limits corrosion, making it a must-have for anyone who depends on oil heating. The highly concentrated formula treats up to 275 gallons with just 8 ounces, so a single bottle goes a long way during the cold season.

ComStar SuperHeat stands out from competing treatments because its advanced formula tackles multiple fuel system issues at once, rather than focusing on a single problem. It boosts heating efficiency by preventing clogs and ensuring a clean, powerful burn. Cold weather reliability is another major advantage, as it guarantees optimal fuel flow and prevents jelling even in freezing temperatures. If you are comparing heating oil treatments, pay attention to concentration levels, the volume of fuel each bottle can treat, and specific benefits such as water removal and corrosion protection. Adding ComStar Super Heat during fuel refills is the easiest way to keep your system performing at its best throughout winter. Buyers should also check compatibility with their particular heating setup and read usage notes before the first application.

Dirty coils reduce system efficiency and lead to higher energy consumption. ComStar Coil Safe is a non-acid, non-fuming cleaner that removes dirt, grease, and grime from evaporator and condenser coils without damaging delicate fins. For quick field work, ComStar Coil Safe Aerosol offers the same cleaning power in a convenient spray can, making it easy to maintain units in tight spaces. Both options are safe for use on aluminum, copper, and other common coil materials, so you can clean with confidence. When it comes to sealing and leak prevention, ComStar Hydro Seal provides a fast-acting solution for stopping leaks in hot water and steam heating systems. It works internally, circulating through the system to find and plug small leaks without the need for disassembly.

Detecting problems early saves time and money. ComStar Leak detection products help technicians pinpoint issues in refrigeration and HVAC lines before they become costly repairs. For joining copper pipes, ComStar Copper Lock offers a reliable bonding method that works well for plumbing and refrigeration connections. ComStar Copper Lock No Heat Solder takes this a step further by allowing technicians to join copper tubing without an open flame, which is safer in confined spaces and near flammable materials. Additionally, ComStar Plate Saver HX is designed to protect plate heat exchangers from scale and corrosion, extending equipment life and maintaining heat transfer performance over time.

Beyond HVAC and plumbing, ComStar offers a range of specialty products that serve additional industries. ComStar Water Detecting Paste is a simple but essential diagnostic tool used to check for the presence of water in fuel storage tanks. Technicians apply a thin layer to a tank gauge stick, and the paste changes color on contact with water, providing a quick and accurate reading. This product is widely used in heating oil, diesel, and gasoline storage, helping operators catch water contamination before it causes engine or burner problems.

ComStar Automotive solutions round out the product lineup, providing chemicals and treatments tailored for vehicle maintenance and repair shops. Whether you need coolant system treatments, fuel additives, or cleaning agents, ComStar has a tested option ready. Every product in the ComStar catalog is developed with real-world applications in mind, backed by decades of field testing and feedback from working professionals. When you shop with us, you get access to the full range of ComStar formulas that keep equipment running longer and performing better across every season and every job site.