Why Formula History Matters When You’re Choosing — or Stocking — a Refrigerant Leak Sealant
June 24, 2026Why Formula History Matters When You’re Choosing — or Stocking — a Refrigerant Leak Sealant Refrigerant Leak Sealant History — One Formula, No Changes Xpress Seal runs on the same organosilane formula that created the refrigerant leak sealant category in the early 2000s. Vapco acquired the rights to sell that line in 2016. The chemistry […]
Refrigerant Leak Sealant Has a Reputation Problem — Here’s Where It Actually Came From
June 22, 2026Refrigerant Leak Sealant Has a Reputation Problem — Here’s Where It Actually Came From Does refrigerant leak sealant damage compressors, TXVs, etc? Refrigerant leak sealant has damaged HVAC systems. It has clogged TXVs, fouled metering devices, and left residue in recovery equipment. Technicians who stopped trusting it made the right call based on what they […]
Purge Calculator
June 8, 2026Purge Performance & Job Calculator Why Flush, When You Can PURGE? ⚠ Important: Do not flush through compressors, TXVs, metering devices, filter-driers, capillary tubes, or other sensitive components. Isolate the line set before flushing. Always follow Vapco Purge application instructions, chase with dry nitrogen, and pull a vacuum to 500 microns or lower before charging […]
How To Flush Line Sets
June 8, 2026By Elliot Garner How to Flush HVAC Line Sets: The 140+ PSI Gold Standard Protocol TL;DR — Key Takeaways Equipment manufacturers are not banning line set flushing — they are warning against weak, low-pressure flushes (≤55 PSI) that trap solvent and destroy replacement compressors. A proper HVAC line set flush requires 140+ PSI delivery pressure […]
News Archive
June 4, 2026Why Your Wasp Spray Stops Reaching the Nest Halfway Through the Can
June 3, 2026Most wasp sprays claim 20-foot range. That number is only true when the can is full. Here's the aerosol physics behind spray pressure degradation — and why consistent range throughout the full can matters for job site safety.
Professional Grade vs. Consumer Wasp Spray: What the Label Doesn’t Tell You
June 2, 2026The wasp spray at Home Depot was built for a homeowner's porch. Here's what separates professional wasp spray from consumer formulas — active ingredient concentration, dielectric strength, indoor use ratings, and why it matters for contractors. If you've ever emptied half a can of Raid into a wasp nest and walked away wondering whether you actually killed anything, you already understand the difference between a spray that was formulated to sell and a spray that was formulated to work.
What Is Dielectric Wasp Spray and Why It Matters for Electrical and HVAC Work
June 2, 2026Dielectric wasp spray uses a petroleum distillate carrier that resists electrical conduction near energized equipment. This guide explains ASTM D-877 testing, how field conditions reduce rated dielectric strength, and how to compare products by spec
Vapco Partner Network
May 28, 2026Vapco Partner Network Vapco Partner Network We Got You Covered · Since 1953 Join the Vapco Partner Network – Select Role –Branch ManagerC-SuiteCounter / Inside SalesMarketingManufacturer’s RepOutside SalesOwner / PrincipalPurchasing Manager Join the Partner Network → Loading… You’re in. Your Vapco rep will be in touch soon.Welcome to the Partner Network. · Trade partners only […]
Why Refrigerant Grade Matters: AHRI 700 Certified R-290 and R-600a
May 27, 2026Not all R-290 and R-600a is the same product. Learn why refrigerant grade, AHRI 700 certification, and filling process standards matter — and what to ask your supplier.