2026 Kickoff Sale EXTENDED! 25% OFF

Start the year strong and don’t miss your last chance to save 25% storewide! Due to popular demand, our 2026 Kickoff Sale has been extended—giving you more time to grab the products you need at unbeatable prices.

Whether you’re upgrading your system, preparing for the season ahead, or restocking essential supplies, now is the perfect time to save big.

Hurry—this extended offer ends Thursday, January 15!

PREMIUM GRADE DOOR SEAL CAULK - HIGH TEMP BLACK

Door Seal Caulk - High Temp Black is used to secure replacement fire rope door seals for ALL outdoor boiler model furnaces. This is a 10 oz. cartridge that is used with a standard caulk gun. 

Please also purchase one 10ft. length of Fire Rope to complete this periodic maintenance item.

See this link for instructions on how to change the door seal:

How To Change The Door Rope Gasket On Your Outdoor Boiler