Keeping Warm With the SF30F Furnace This Winter

If you're waking up to frost on your RV windows, it's usually the sf30f furnace that becomes your best friend in a hurry. There's a specific kind of relief that comes with hearing that blower motor kick on and feeling the first waft of warm air hitting your ankles when it's freezing outside. For many of us in the RV community, the Suburban SF series has been a staple for years, and the SF-30F is right in that "Goldilocks" zone of power and efficiency. It's not so small that you're still shivering in a 30-foot trailer, but it's not such a power hog that it kills your batteries in three hours. ...

February 12, 2026 · 6 min · Philip Maryanna