DC Motors0
DC motors (direct current motors, almost always 12V DC in RVs) in recreational vehicles, campers, and motorhomes are primarily used to power air circulation in propane-fired forced-air furnaces (brands like Suburban, Atwood/Dometic Hydro Flame, or Hydroflame), where a small permanent magnet DC blower motor drives the squirrel-cage blower wheel to distribute heated air through vents and ducts throughout the RV—essential for safe combustion and even heating without relying on 120V AC power.
These motors run directly off the RV's 12V battery system (or converter when plugged in), allowing the furnace to operate efficiently during boondocking, dry camping, or generator-free scenarios, with typical draws of 5–9 amps during blower operation; they often feature dual-shaft designs (one for the main air blower, one for combustion air intake) and are compact, vibration-resistant, and brush-type for simplicity and cost in mobile applications.
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