The Polar Vortex Is Back - 25% OFF on all items!

Don’t Risk Losing Heat

Don’t wait until the cold hits hard. Protect your heat system and stay warm with our biggest savings of the season.

Stay ready. Stay warm.

Sale ends December 11 — shop now before it’s gone.

Two free kits per customer per year.  Just enter the discount code FREEKIT at checkout and pay only S&H.

Use this kit to test the water in your furnace for the proper amount of Liquid Armor. Each kit consists of the following items.
- Sample bottle/cap
- Shipping box
- Return labels
- Instructions for taking a sample

Each order contains two water sample kits - just pay S&H. Enter the discount code "FREEKIT" at checkout for your free kit.