Dometicâ„¢ (Hydroflame) 8525-III RV Propane Heater / Furnace - 25K Parts Breakdown Dometic Dometic™ (Hydroflame) 8525-III RV Propane Heater / Furnace - 25K Parts Breakdown This is a parts breakdown for the Dometic™ (Hydroflame) 8525-III RV Propane Heater / Furnace. The 8525-III is a forced-air furnace that uses a heat exchanger...