Dometic GC6AA-7 6-Gallon LP DSI RV Water Heater
Dometic GC6AA-7 6-Gallon LP DSI RV Water Heater Review
The Dometic GC6AA-7 is a 6-gallon LP-only DSI RV water heater. The "GC6AA" identifies the current Dometic 6-gallon gas line (predecessor was Atwood G6A); the "7" suffix and absence of "E" indicates LP-only, no electric backup mode.
Specs: 6 gallons stored, 8,800 BTU propane burner, DSI ignition, 12V DC control. Aluminum tank. Recovery rate ~11 gph on propane.
LP-only positioning serves: smaller RVs without electric demand for water heating, boondockers who rarely use shore power for hot water, budget-constrained installs where ~$100 savings vs GC6AA-8E (dual energy) matters.
About $400 for replacement unit, $200-$350 installed. Drops into existing 6-gallon Atwood/Dometic cutouts with minor trim adjustments. Parts through Camping World and RV specialty.