If you’ve ever woken up to a frosty morning in your RV only to find that your furnace won’t kick on, there’s a good chance the culprit was the infamous sail switch. It’s been one of the most common failure points in traditional RV furnaces for years—until now. Dometic is changing the game with their Next-Gen 35K BTU Furnace Essential, and here at Lerch RV, we’re excited to share what this means for your next adventure.