Triac B (AQE12) $50.00 Outlet Temperature Sensor (AQE12) $25.00 Water Flow Sensor (AQE12) $49.90 AQUAH 10L (2.65 GPM) Outdoor Propane Gas Tankless Water Heater $419.98 AQUAH PREMIUM DIRECT VENT PROPANE GAS TANKLESS WATER HEATER $779.90 Water Oulet (AQE12) $24.00 AQUAH 6L Portable Outdoor Liquid Propane Tankless Water Heater $178.00 AQUAH 16L (4.23 GPM) Propane Gas Tankless Water Heater $1,199.80 Control Board (AQE12) $74.85 AQUAH 12L (3.2 GPM) Liquid Propane Gas Tankless Water Heater $657.00 AQUAH 12L (3.2 GPM) Outdoor Propane Gas Tankless Water He $458.00 AQE12 Heating Element $159.00 Water Pressure Relief Valve $10.95 Control Board (AQE18) $22.00 Mirco Switch (16L) $11.95