Tank gauge says how low? Time to call, or wait?
Your gauge plus this season's weather plus your household profile gives a real answer. Run dry on a Sunday in February and you are looking at $300+ in emergency delivery fees. Run dry in July and you barely notice.
You are in the safe call-now window. Book a routed delivery rather than expedited to keep the per-gallon price at your normal contract rate.
Assumes 80% maximum fill rule, usable drawdown to 5%, and seasonal burn multipliers of 2.3x winter / 1.35x shoulder / 0.25x summer on top of average daily burn. Your actual runway depends on thermostat setpoint, insulation, and weather.
How this planner works
We start with your current gauge reading and convert it to gallons remaining (gauge percent multiplied by your tank's usable capacity, which is 80 percent of nominal size). Then we apply a seasonal burn multiplier on top of your annual usage to get a winter or shoulder-season daily burn rate. The runway you see is gallons remaining divided by daily burn.
The recommended call date is your run-dry date pulled forward by a 14-day cushion in winter (Nov to Mar) or a 7-day cushion in milder months. That cushion is not arbitrary. It absorbs supplier scheduling time and weather delays. Will-call customers without a cushion routinely pay $100 to $400 in expedited delivery fees during cold snaps.
Your fill cost uses your state's current EIA price multiplied by the gallons needed to bring you back to 80 percent capacity. Per-gallon pricing on a partial top-off is often higher than a full fill, so the planner assumes you fill to 80 percent for the most realistic invoice estimate.
Quick gauge guide
Maximum safe fill (vapour expansion headspace required)
Plan a refill date but no urgency. Best window to shop suppliers.
In winter you have roughly 2 to 4 weeks left. Schedule the delivery.
Pressure too low for some appliances. Emergency fee likely.
System needs a leak test and pilot relight by a technician before refill.