First off, do your best to avoid running out of gas. Serious safety hazards, including fires and explosions, can result. The following can happen if you let your system run out of propane:
- If a valve or gas line is left open when the propane supply runs out, a leak can occur when the system is recharged with propane.
- Air and moisture can get into an empty or depleted tank, which results in rust build-up inside the tank. Rust decreases the concentration of the odor of propane, making it difficult to smell.
- Any pilot lights on your appliances will go out if your propane tank runs out. That can be extremely dangerous if handled improperly.
- You will be required to have a leak check. If you allow your system to run out, a propane retailer or qualified service technician must perform a leak check before turning on the gas.