Connecting your house propane tank to your gas grill lets you tap into the larger supply of liquid propane so you won't need smaller gas cylinders that must be refueled much more frequently. This means you won't need to disconnect the regulator and gas hose as often, nor will you have to reconnect the line to the grill and check for leaks as frequently. You save time and enjoy a reliable source of fuel for outdoor cooking.
Extend a tape measure from the house propane tank to your gas grill. The house tank is typically on one side or the back of the building, so place the grill as close as possible to the tank to reduce the cost of the gas hose, which is priced by length.
Uncoil the gas hose and run it from the grill to the house tank without crimping or bending the hose more than 45 degrees. Run the hose along the edge of a patio or below the deck to keep it out of the way, and safe from hazards such as lawn mowers and curious children.
Screw the tank knob clockwise until fully closed.
Connect one end of the hose to one of the tank valves and turn the metal connector clockwise by hand until you feel resistance, then tighten 1/2 turn with pliers.
Remove the old hose and regulator from the back panel of your grill. The house tank has its own regulator, so you won't need the old part.
Fasten the other end of the hose from the house tank to the valve on your grill and tighten with the pliers.
Open the valve at the house tank and check along the line for leaks. Hissing noises or the smell of spoiled eggs are signs of a gas leak. If you suspect a leak, close the house tank and unscrew the hose at each end, then reattach the hose and check again for leaks.