What's typically included
A standard annual gas check covers:
- Tank visual inspection — corrosion, damage, paint condition, dome and fittings
- Regulator check — pressure verification, vent inspection, age assessment
- Gauge calibration — accuracy of dial percentage gauge
- System pressure test — leak verification at operating pressure
- Appliance combustion check — flame quality, vent integrity, combustion-air supply
- CO measurement at appliances — verify safe combustion
- Documentation — report covering findings and any recommended actions
When to schedule
Best timing: summer or early fall, before heating season. Three benefits:
- Dealers are less busy than mid-winter, easier to schedule
- Any required repairs can be completed before heating demand starts
- If a regulator or component needs replacement, it's done in mild weather
What it costs
Most dealers include annual gas check in their service plans for active customers, especially auto-fill accounts. Customer-owned tank owners pay $75–$200 per service call to an independent technician. The check is genuinely worth this cost — small issues caught at annual check rarely become emergencies.
What to do with the findings
Three common outcomes:
- All good — most checks find nothing; document and schedule next year
- Minor recommendation — clean vent caps, replace CO detector, etc. — homeowner action
- Component replacement needed — regulator past service life, valve issue — schedule technician repair
FAQ
Is an annual propane gas check required?
Not by law in most US jurisdictions for residential customers. Strongly recommended by every industry safety source. Many dealers require it as a condition of service for auto-fill accounts.
What's the difference between a gas check and a leak test?
A leak test is a specific NFPA 58 procedure required after service interruption (run-out, valve closure, service work) — pressure-test the system. A gas check is a broader annual inspection that includes a leak test plus appliance and component checks.