The main Southwest Gas phone number and what it handles

Southwest Gas's main customer service line is 1-877-860-6020. This number handles billing questions, service requests, account changes, and general inquiries. You can call it during business hours, which are typically Monday through Friday, 7 a.m. to 6 p.m., and Saturday 8 a.m. to 5 p.m. Mountain Time. The line is closed on Sundays and major holidays.

When you call, have your account number ready — it appears on your bill and speeds up the process. If you are calling about a specific issue like a gas leak or no heat in winter, tell the automated system when ready so it can route you to the right department. Some issues, like emergencies, have faster paths than others.

Southwest Gas serves parts of Arizona, Nevada, and California. The company operates under different names in different states — it is Southwest Gas in Arizona and Nevada, and Southwest Gas Corporation in California — but the same phone number works across all service areas.

Key Takeaways

  • Call 1-877-860-6020 for billing, account changes, and general customer service questions during business hours.
  • Have your account number from your bill ready before you call to reach the right department faster.
  • For gas leaks or no heat emergencies, call the same number but tell the automated system it is an emergency so you reach someone when ready.
  • Southwest Gas also offers online account management and bill payment through its website, which does not require a phone call.
  • If you cannot reach the main line, check your bill for a local service center number specific to your area.

Emergency calls and after-hours gas leaks

If you smell gas or suspect a leak, call 1-877-860-6020 even outside business hours — the system will route emergency calls to someone when ready, 24 hours a day. Do not use your phone near the suspected leak, and leave the building if the smell is strong. Tell the operator exactly where you smell the gas and whether anyone is experiencing symptoms like dizziness or nausea.

Southwest Gas also has a separate emergency line for some areas. Check your most recent bill for a local emergency number specific to your service territory, as some regions have direct lines that may be faster than the main number during an emergency.

Reaching Southwest Gas online and by mail

You do not have to call to handle most account tasks. Southwest Gas's website lets you view your bill, make a payment, report an outage, and update your account information without waiting on hold. You can also set up automatic payments so your bill is paid on the same day each month, which removes the need to call or visit the website repeatedly.

If you prefer to write, Southwest Gas accepts mail at the address on your bill. Mailed requests take longer — usually 7 to 10 business days — so use this method only for non-urgent matters like address changes or billing disputes that do not need when ready resolution.

Local service centers and in-person options

Some Southwest Gas service areas have local offices where you can pay a bill in person or speak to someone face-to-face. The address and hours for your nearest location appear on your bill or on the company's website. In-person visits are useful if you have a complex billing question or need to set up a payment arrangement, since you can speak to someone who can see your full account history.

Call ahead before visiting a local office, as hours vary by location and some offices have reduced staffing on certain days. Many offices are now by appointment only, so a quick call prevents a wasted trip.

Billing and payment questions

If your bill is higher than usual, the automated system can walk you through common reasons — a rate change, a billing cycle that included more days, or a meter reading that differed from the previous estimate. Have your current bill and the previous month's bill in front of you when you call, so you can compare the usage and charges side by side.

If you cannot pay your full bill on time, call to discuss a payment plan. Southwest Gas offers arrangements that let you spread the balance over several months, which is faster and simpler than waiting until the account is referred to a collection agency. The sooner you call, the more options you have.

Service outages and no-heat situations

If your heat is not working or you have no gas service, call 1-877-860-6020 and tell the system it is a service outage. The company prioritizes these calls, especially in winter. Have your account number ready and be prepared to describe what you have already tried — for example, whether you checked that the pilot light is lit or whether you reset the thermostat.

Southwest Gas may be able to walk you through a straightforward fix over the phone. If the problem requires a technician visit, they will schedule one and give you a time window. Emergency service calls in winter are usually scheduled within 24 hours, but non-emergency calls may take longer depending on demand.

Frequently Asked Questions

What if I am on hold for a long time?

Call times are longest on Mondays and during winter when heating demand is high. Try calling early in the morning or mid-afternoon on a weekday, or use the online account portal instead — it handles most routine tasks without any wait.

Can I pay my Southwest Gas bill by phone?

Yes. When you call the main number, the automated system can take a payment over the phone using a debit or credit card. You can also pay online, by mail, or in person at a local office. Online and automatic payments usually have no fee, while phone payments may charge a small processing fee.

What if I have a question about my bill but do not know my account number?

Have your service address or phone number ready instead. The customer service representative can look up your account using either piece of information. Your account number is on your bill, but if you do not have a recent bill, the address or phone works just as well.

Does Southwest Gas have a Spanish-language line?

Yes. When you call 1-877-860-6020, the automated system offers Spanish as a language option at the beginning of the call. Select Spanish and you will be connected to a Spanish-speaking representative.

What if I want to report a problem but do not want to call?

You can report outages, request service, and submit billing questions through the Southwest Gas website or mobile app. Online reports are logged when ready and you will receive a confirmation number. For non-emergency issues, this method often results in faster resolution than a phone call.