RectorSeal GulfClean product

RectorSeal Introduces GulfClean Coil Cleaner and Salt Reducer Application for Coastal HVAC Units

October 18, 2019

RectorSeal®, Houston, a leading manufacturer of quality HVAC/R tools and accessories, introduced GulfClean the industry’s only Modine® CIS Coatings approved two-step coil cleaner and salt reducer application for protecting coastal area residential and commercial HVAC equipment and their factory-applied coil coatings.

GulfClean was developed by RectorSeal through the specifications of a partnership with Modine CIS Coatings–division of Modine Mfg., Racine, Wis., the HVAC/R industry’s leading factory-applied coating service. Modine CIS Coatings now authorizes and mandates GulfClean applications every six-months to coastal area units treated with its Electro-Fin® E-Coat and Insitu® Spray Applied Coating to maintain the coatings’ five-year warranty. The two-step process is also safe and recommended for maintaining most manufacturer’s coils and coatings from salt corrosion, including RectorSeal’s recently-introduced GulfCoat, an HVAC protective coil coating sold in 12-ounce aerosol cans for contractors to field or shop-apply.

GulfClean’s Step-1 Coil Cleaner and Step-2 Salt Reducer are available in one-gallon (3.76-liters) containers from most HVAC/R wholesale distributors and manufactured by RectorSeal at its Houston-based chemical plant for quality control. Each step requires less than 10 minutes to apply and rinse.

GulfClean Coil Cleaner is an environmentally-friendly, biodegradable, non-acid and non-caustic foaming cleaner that attacks dirt and salt, but is safe for evaporator, condenser and refrigeration coil metals and coatings, as well as the service technician applying it. The straw-colored solution is typically diluted with one to three parts water (depending on coil soiling), applied with a hand pump-up sprayer and rinsed with water.

GulfClean Salt Reducer is a biodegradable, non-flammable and volatile organic compound (VOC)-free solution that’s safe for removing soluble salts, but without interfering with coil protective coating adhesion on evaporator and condenser coils. Manufactured in a blue color to differentiate from the cleaner, the salt reducer is typically diluted in a 50:1 to 100:1 ratio (depending on unit proximity to coasts) and applied with a hand pump-up sprayer and rinsed within 10 minutes.

Other GulfClean features include:

  • Step-1 will not chemically attack or corrode coils, surrounding metal, other HVAC equipment components or adjacent roofing materials;
  • Applicable to packaged and split-system outdoor unit coils;
  • Steps 1 and 2 are available to wholesale distributors in cases of 4 one-gallon containers and have shelf lives of two and three years, respectively.

For additional information on GulfClean, or other RectorSeal coil cleaning and protection products, please visit or email; or call 800-231-3345. Additional information on Modine Coatings can be found at

About RectorSeal

The RectorSeal LLC is a leading manufacturer of chemical and specialty products designed for professional tradesmen. Steady growth over the years has been maintained through a commitment to providing high quality products and services. With a diversified business strategy, RectorSeal aggressively pursues new and unique technologies to serve the plumbing, heating, air conditioning, electrical and construction industries. RectorSeal is devoted to providing innovative quality products supported by strong customer and technical service. For more information, visit, email: or call (800) 231-3345.

About Modine Coatings

Major OEMs recommend ElectroFin® E-Coat & Insitu® Spray Applied Coating as the premier choice for corrosion protection. Only ElectroFin® E-Coat & Insitu® Spray Applied Coating offer a true, completely covered unit backed by a 5-year warranty on materials and workmanship. ElectroFin® E-Coat & Insitu® Spray Applied Coating are classified C5-1 and meet the toughest marine and industrial standards. We are the only company that can provide both e-coat and spray applied coating services together. This system offers equipment owners complete and total protection, reducing maintenance costs, and ensuring that your HVAC&R systems will operate most efficiently over its lifetime. For more information, visit, email:; or call (502) 634-9458.