Truma AquaGo Electric Antifreeze Kit 77400-01, 12V Freeze Protection — Open-Box, 10% Off

Prevents freeze-crack damage to your AquaGo tankless heater in temps as low as -4F, using an electric heating element plus circulation pump that keeps water moving through the unit overnight at a cold-weather campsite.

Built specifically for Truma AquaGo Comfort and Comfort Plus systems; connects to the existing Easy Drain Lever and factory cable harness, so it works with the exact plumbing and wiring already in your RV or camper.

Installs in minutes with a true plug-and-play design: insert the kit into the Easy Drain Lever, plug the connector into the AquaGo cable harness, and you are done, no cutting, soldering, or extra tools required.

Runs on 12V DC (120W) from your house battery instead of propane, so freeze protection keeps working with the burner off, LPG cylinders closed for travel, or the AquaGo in standby between camping trips.

Eliminates fall/spring draining and RV antifreeze flushing for winter storage or cold-climate touring, making it the practical choice for snowbirds, ski-season campers, and anyone who tows through freezing overnight lows.

"The forecast drops below freezing overnight, you can't get to a dump station to drain the lines, and your AquaGo tankless water heater is sitting exposed to a hard freeze. The Truma AquaGo Electric Antifreeze Kit (77400-01) solves exactly this problem: it protects the heat exchanger and water passages inside your AquaGo down to -4F (-20C) without draining the system or relying on propane. Once installed, the kit runs on 12V DC (120W) power drawn from your RV's house battery. An electric heating element paired with a small circulation pump keeps water moving through the AquaGo whenever conditions approach freezing, whether the burner is off, the LPG cylinders are closed for highway travel, or the unit is simply sitting in standby overnight at camp. Installation is genuine plug-and-play and takes only a few minutes. The kit inserts directly into the AquaGo's Easy Drain Lever and connects to the existing factory cable harness, so there is no cutting, soldering, or rewiring. It is built as a retrofit accessory specifically for Truma AquaGo Comfort and Comfort Plus systems already installed in your RV, camper van, or trailer. For owners who camp through shoulder-season cold snaps, tow through mountain passes at elevation, or store a rig with water still in the lines between trips, this kit removes the annual drain-and-refill winterization routine and the risk of freeze damage if temperatures drop before you can act. It is genuine Truma OEM equipment, engineered to the same standard as the AquaGo system it protects. Keep in mind the Electric Antifreeze Kit is a freeze-protection accessory, not a substitute for propane-fired water heating. It is designed to prevent cold-weather damage while the burner is not running, so your AquaGo is ready to deliver hot water again as soon as you need it."