--- title: Is Your Gas Meter Big Enough for a Whole-Home Generator? description: Is your gas meter big enough for a whole-home generator? Learn how to check gas meter size, calculate BTU needs, and avoid generator startup failures. image: https://guardianhomegenerators.com/hubfs/Gas%20Meter%20Size%20Comparison%20Guide.png --- [Skip to content](https://guardianhomegenerators.com/blog/is-your-gas-meter-big-enough-for-a-whole-home-generator#main-content) [![Guardian-Home-Generator-Backup-Logo-Gray-BG-SM](https://guardianhomegenerators.com/hs-fs/hubfs/Guardian-Home-Generator-Backup-Logo-Gray-BG-SM.png?width=300&height=91&name=Guardian-Home-Generator-Backup-Logo-Gray-BG-SM.png "Guardian-Home-Generator-Backup-Logo-Gray-BG-SM")](https://www.guardianhomegenerators.com) - [Home](https://guardianhomegenerators.com) - [Services](https://guardianhomegenerators.com/whole-home-generator-services-install-maintain-repair) - [Overview](https://guardianhomegenerators.com/whole-home-generator-services-install-maintain-repair) - [Installation](https://guardianhomegenerators.com/dfw-whole-home-generator-installation) - [Maintenance](https://guardianhomegenerators.com/blog/generator-annual-maintenance-and-service) - [Service](https://guardianhomegenerators.com/best-generator-service-and-repair) - [FAQ](https://guardianhomegenerators.com/whole-home-generator-questions-answers) - [Expert Advice](https://guardianhomegenerators.com/blog) - [Meet the Owner](https://guardianhomegenerators.com/about-us) - [Local Businesses](https://guardianhomegenerators.com/local-business-home-generators) - [214-233-5159](tel:214-233-5159) - [Get Started](https://guardianhomegenerators.com/contact-guardian-home-generators-of-dallas-ft-worth) - [Home Generator FAQs](https://guardianhomegenerators.com/blog/tag/home-generator-faqs) # Is Your Gas Meter Big Enough for a Whole-Home Generator? ![Do I need a bigger gas meter for a generator](https://guardianhomegenerators.com/hubfs/Gas%20Meter%20Size%20Comparison%20Guide.png) - June 1, 2025 ![Brad Nash](https://guardianhomegenerators.com/hubfs/Headshot-Best-Flag.jpeg) [Brad Nash](https://guardianhomegenerators.com/blog/author/brad-nash) ## How to tell if your gas meter is big enough for your new generator. Inadequate gas flow or pressure is one of the leading causes of generator startup failures, often caused by improper sizing during installation. We see it frequently on service calls. A generator may run perfectly during its weekly exercise, only to fail when placed under a full electrical load. At Guardian Home Generators, we do the homework upfront, calculating your home's gas requirements to ensure your generator has the fuel supply it needs to perform reliably when it matters most.  Curious about your current meter, or concerned it might be undersized? Here's how to check it yourself. **Find your meter's capacity.** Look for a number followed by **CFH** (cubic feet per hour) or a model number such as AC-250 or AL-425. Not sure? Take a picture of your meter, upload it to ChatGPT, and ask it to identify the meter's capacity. **Is your meter big enough?** Generac and Kohler air-cooled generators require approximately 300 CFH (300,000 BTU/hr), depending on the model. The meter pictured here is rated at 250 CFH, meaning this homeowner will need additional capacity.  **Use our [Gas Meter BTU Calculator for Whole-Home Generators](https://guardianhomegenerators.com/blog/whole-home-generator-gas-meter-btu-calculator)** to determine your home's total gas requirements, including your generator. **What if you need an upgrade?** Here in North Texas, most customers have Atmos as the gas provider.  Atmos provides meter upgrades at no charge.  Upgrades can be completed before or after generator installation. **Low pressure vs. high pressure.** Some meters have a white background behind the dials indicating low pressure (ounces) or a red-faced background indicating high pressure (pounds).  Most generator installations do not require converting to high-pressure gas.  If your generator requires high pressure, we can assist with the conversion.  While the meter swap is free, there is an additional cost to add high-pressure regulators to the home and generator.    - ![250 CFH Meter - Generator](https://guardianhomegenerators.com/hs-fs/hubfs/lp-meter.jpg?width=1080&height=1080&name=lp-meter.jpg) Low Pressure Gas Meter - 250 C.F.H. - ![425 CFH HP Meter - Generator](https://guardianhomegenerators.com/hs-fs/hubfs/hp-meter.jpg?width=1080&height=1080&name=hp-meter.jpg) High Pressure Meter - 425 C.F.H. --- Blog Post ## Related Articles Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse varius enim in eros elementum tristique. [![Generator Gas Meter BTU Calculator](https://guardianhomegenerators.com/hubfs/Gas-BTU-Calculator-Blog.png)](https://guardianhomegenerators.com/blog/whole-home-generator-gas-meter-btu-calculator) [Home Generator FAQs](https://guardianhomegenerators.com/blog/tag/home-generator-faqs) ### [Gas Meter BTU Calculator for Whole-Home Generators](https://guardianhomegenerators.com/blog/whole-home-generator-gas-meter-btu-calculator) March 29, 2024 [Read more](https://guardianhomegenerators.com/blog/whole-home-generator-gas-meter-btu-calculator) [![Whole-Home Generator Size Calculator](https://guardianhomegenerators.com/hubfs/Home%20Generator%20Sizing%20Guide.png)](https://guardianhomegenerators.com/blog/calculating-the-size-of-your-backup-generator) [Home Generator FAQs](https://guardianhomegenerators.com/blog/tag/home-generator-faqs) ### [Calculating the size of your backup generator](https://guardianhomegenerators.com/blog/calculating-the-size-of-your-backup-generator) June 30, 2026 How Much Power Does Your Home Actually Use? Calculate the size of your backup generator. [Read more](https://guardianhomegenerators.com/blog/calculating-the-size-of-your-backup-generator) [![Remote Monitoring Home Standby Generator](https://guardianhomegenerators.com/hubfs/remote-monitoring.png)](https://guardianhomegenerators.com/blog/home-back-up-generator-remote-monitoring-service) [Home Generator Benefits](https://guardianhomegenerators.com/blog/tag/home-generator-benefits), [Generator Maintenance](https://guardianhomegenerators.com/blog/tag/generator-maintenance) ### [Home Back Up Generator Remote Monitoring Service](https://guardianhomegenerators.com/blog/home-back-up-generator-remote-monitoring-service) April 12, 2025 Guardian Home Generators Remote Monitoring Service Never Worry About Your Power Again: Hands-Free Remote Generator... [Read more](https://guardianhomegenerators.com/blog/home-back-up-generator-remote-monitoring-service) Check all articles ---   [214-233-5159](tel:+214-233-5159) info@guardianhomegenerators.com [Get a Quote](https://guardianhomegenerators.com/contact-guardian-home-generators-of-dallas-ft-worth) [![Guardian Home Generator With Logo](https://guardianhomegenerators.com/hs-fs/hubfs/Guardian-Home-Generator-Render-Logo-SM.png?width=300&height=300&name=Guardian-Home-Generator-Render-Logo-SM.png "Guardian Home Generator With Logo")](https://www.guardianhomegenerators.com) **Guardian Home Generators, LLC** specializes in the professional installation of whole-home backup power systems powered by [Generac](https://www.generac.com)standby generators. We are based in the heart of the Dallas-Fort Worth metroplex in Grapevine, TX.  We service and install generators in all of Dallas and Ft Worth.  By keeping our focus on serving our surrounding neighbors in Northeast Tarrant County, Southwest Denton County, and Eastern Wise County:  Southlake, Trophy Club, Roanoke, Colleyville, Keller, North Richland Hills, Hurst, Euless, Bedford, Flower Mound, Paradise, and our adjacent neighbors, we provide the best local generator service and installations. We serve homeowners who value reliability, safety, and long-term performance.  We offer customized solutions that automatically restore power during outages. Unlike electricians and general contractors, we focus exclusively on standby generators—delivering expert service, personalized consultations, and unmatched peace of mind. ### Pages - [Home](https://guardianhomegenerators.com) - [Services](https://guardianhomegenerators.com/whole-home-generator-services-install-maintain-repair) - [FAQ](https://guardianhomegenerators.com/whole-home-generator-questions-answers) - [Expert Advice](https://guardianhomegenerators.com/blog) - [Meet the Owner](https://guardianhomegenerators.com/about-us) - [Local Businesses](https://guardianhomegenerators.com/local-business-home-generators) - [Contact](https://guardianhomegenerators.com/contact-guardian-home-generators-of-dallas-ft-worth) [![Guardian Home Generators BBB Business Review](https://seal-austin.bbb.org/logo/ruhzbum/bbb-1000251390.png)](https://www.bbb.org/us/tx/grapevine/profile/generators/guardian-home-generators-0825-1000251390/#sealclick) [![Generac-Logo-Small](https://guardianhomegenerators.com/hs-fs/hubfs/Generac-Logo-Small.jpg?width=225&height=50&name=Generac-Logo-Small.jpg)](https://www.generac.com/) [![kohler-generators-logo-wide-small](https://guardianhomegenerators.com/hs-fs/hubfs/kohler-generators-logo-wide-small.png?width=160&height=50&name=kohler-generators-logo-wide-small.png)](https://www.kohlerhomeenergy.rehlko.com/) - [Terms and Conditions](https://guardianhomegenerators.com/terms-conditions) - [Privacy Policy](https://guardianhomegenerators.com/privacy-policy) **©2026 Guardian Home Generators, LLC** We're Social [Follow us on Facebook](https://www.facebook.com/profile.php?id=61575525839657) [Follow us on Facebook](https://www.youtube.com/@guardianhomegenerators) [Follow us on Twitter](https://www.instagram.com/guardianhomegenerators) [Follow us on LinkedIn](https://www.linkedin.com) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Brad Nash", "url" : "https://guardianhomegenerators.com/blog/author/brad-nash" }, "dateModified" : "2026-10-09T05:16:42.676Z", "datePublished" : "2025-06-01T04:15:00.000Z", "headline" : "Is Your Gas Meter Big Enough for a Whole-Home Generator?", "image" : [ "https://guardianhomegenerators.com/hubfs/Gas%20Meter%20Size%20Comparison%20Guide.png" ], "mainEntityOfPage" : { "@id" : "https://guardianhomegenerators.com/blog/is-your-gas-meter-big-enough-for-a-whole-home-generator", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://guardianhomegenerators.com/hubfs/Guardian-Home-Generator-Backup-Logo-Gray-BG-SM.png" }, "name" : "Guardian Home Generators, LLC" } } ``` ```json { "@context" : "https://schema.org", "@id" : "https://guardianhomegenerators.com/#business", "@type" : "HomeAndConstructionBusiness", "additionalType" : "https://schema.org/Electrician", "address" : { "@type" : "PostalAddress", "addressCountry" : "US", "addressLocality" : "Grapevine", "addressRegion" : "TX", "postalCode" : "76051", "streetAddress" : "3205 Meredith Ln" }, "areaServed" : [ { "@type" : "Place", "name" : "Grapevine" }, { "@type" : "Place", "name" : "Colleyville" }, { "@type" : "Place", "name" : "Southlake" }, { "@type" : "Place", "name" : "Keller" }, { "@type" : "Place", "name" : "Trophy Club" }, { "@type" : "Place", "name" : "Flower Mound" }, { "@type" : "Place", "name" : "Northlake" }, { "@type" : "Place", "name" : "Hurst" }, { "@type" : "Place", "name" : "Euless" }, { "@type" : "Place", "name" : "Bedford" }, { "@type" : "Place", "name" : "Westlake" }, { "@type" : "Place", "name" : "North Richland Hills" } ], "description" : "Guardian Home Generators specializes in whole-home backup generator installation and maintenance across North Texas, including Grapevine, Southlake, and surrounding cities. 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