which natural gas generator can I buy online?

Yes. If you mean a generator that connects directly to your home's natural-gas line, there are two main categories:

• Whole-home standby: permanently installed, starts automatically during an outage.
• Portable tri-fuel: can run on natural gas, but usually requires manual setup and a proper gas connection.

Good options currently available online

• Generac 22kW Home Standby Generator - $5,570.10 (The Home Depot)
• Briggs & Stratton PowerProtect 22kW - $8,106.00 (The Home Depot)
• Champion 22kW FLEX Home Standby - $5,300.00 (Champion HSB Dealer Store)
• Westinghouse iGen5000DF Portable Generator - $849.00 (The Home Depot)

For a typical house: The Generac 22kW is a straightforward choice. It's currently listed around $6,189 for the generator alone, and the natural-gas rating is 19.5kW. Consumer Reports' 2026 testing also includes this model among its tested standby generators.Quartz+1

If you specifically want strong natural-gas output: The Briggs & Stratton PowerProtect 22kW is listed at about $8,106 with a 200A transfer switch and is rated for 22kW on natural gas according to current comparison data.Outage Geek

If you don't want permanent installation: Be careful with portable models. Many products advertised as "dual fuel" mean gasoline + propane, not natural gas. For natural gas, you specifically need a tri-fuel model that supports NG.buyerreports.org

If you tell me (1) your house size, (2) whether you have central A/C, and (3) whether you want whole-house automatic backup or a portable generator, I can narrow it down to 2–3 specific generators and current online prices.

If you want natural-gas backup for a house, these are currently available online:

• Generac 10kW Standby Generator - $4,076.10 (The Home Depot)

• Kohler RESVL 10kW Standby Generator - $4,398.00 (Lowe's)

• DuroMax 13,000W Tri-Fuel Portable Generator - $1,499.00 (Lowe's)

• Westinghouse WGen10500TFc Tri-Fuel Generator - $1,249.00 (Best Buy)

• Generac 10kW — automatic standby, NG/propane, about $4,076 with transfer switch.The Home Depot

• Kohler 10kW — NG/propane, automatic transfer switch, about $4,398.

• DuroMax 13,000W — portable tri-fuel, about $1,499.

• Westinghouse WGen10500TFc — portable tri-fuel, 10,500 running watts, about $1,249.The Home Depot

For automatic whole-house backup, look at the Generac/Kohler. For a cheaper portable setup, consider the DuroMax or Westinghouse.

You can buy several top-tier natural gas-capable generators online, ranging from whole-house permanent standby units to flexible portable/tri-fuel options.

Home Standby Generators (Permanent / Whole-House)

These permanently connect to your home’s municipal natural gas line and kick on automatically during an outage.[1]

• Generac Guardian Series (e.g., 14kW to 22kW models) — The most popular home standby line on the market, featuring Wi-Fi connectivity and automatic transfer switches . You can buy them directly through major online home improvement retailers like Lowe's or The Home Depot.[1][2]
• Briggs & Stratton PowerProtect (e.g., 13kW model) — Engineered with NGMax technology for optimized performance specifically on natural gas in a compact footprint. Available online via Lowe's.[1]

Tri-Fuel Portable Generators (Flexible / Mobile)

If you want something movable that can plug directly into a natural gas quick-connect valve on your house (along with gas or propane), look at tri-fuel portables:[1]

A massive 13,000-peak-watt tri-fuel portable unit that runs on natural gas out of the box with an included hose. Available to order on the DuroMax Power Equipment Store.

A high-capacity tri-fuel inverter generator that outputs clean power (<3% THD) safe for sensitive electronics while running on natural gas. Available through Lowe's.

Features wireless remote start and CO Shield safety tech, runnable on natural gas right away. Available online via Tractor Supply Co..[1][2][3]

To help narrow down the ideal choice, let me know:

• Are you looking for a permanent standby unit or a portable generator?
• Roughly how many watts or which major appliances do you need to power?

You can easily buy natural gas generators online, ranging from heavy-duty portable tri-fuel units to permanent home standby systems.

1. Portable Tri-Fuel Generators (Runs on Gas, Propane, and Natural Gas)

These portable units connect to your home's natural gas supply line via a conversion hose, giving you multi-fuel versatility without needing a permanent installation.

• Westinghouse WGen14500TFc — An 18,000 peak / 11,600 running watt tri-fuel portable powerhouse equipped with remote electric start and a CO detector. Available to order online at The Home Depot.[1]
• Champion Power Equipment Tri-Fuel Series — Popular models (like their 11,500/9,200-watt electric start units) come ready for natural gas out of the box and are widely stocked across online retailers.homedepot.com+1
• DuroMax Tri-Fuel Series — Heavy-duty portable options reaching up to 15,000 peak watts with natural gas capability, available at major hardware suppliers.homedepot.com+1

2. Home Standby Generators (Permanent Natural Gas / Liquid Propane)

These units sit outside your house permanently, hook directly into your municipal natural gas line, and turn on automatically during a power outage.[1][2]

Generac Guardian Series The gold standard for residential standby power, frequently available for online purchase through specialized power equipment sites and home improvement stores.[1][2]

To help narrow down the best option, tell me:

• Do you want a portable unit you can roll out during emergencies, or a permanent standby unit wired directly to your electrical panel?
• What specific appliances or square footage do you need to power?

Yes. If you mean a permanently installed home standby generator that runs on your existing natural-gas line, there are several good options you can buy online.

My top picks

• Generac 14kW with 200A Transfer Switch - $5,255.10 (The Home Depot)

Best overall: Generac 14 kW + 200A transfer switch — about $5,839. It runs on natural gas or propane and includes the automatic transfer switch, so it's a good middle-ground for a typical home. Generac rates this model at 14 kW on natural gas.Generac

• Generac 10kW + 16-Circuit Transfer Switch - $4,076.10 (The Home Depot)

• Kohler 14kW - $5,449.00 (The Home Depot)

• Generac 18kW + 200A Transfer Switch - $6,639.00 (The Home Depot)

• Kohler 20kW - $6,299.00 (The Home Depot)

• Briggs & Stratton 18kW + 200A Transfer Switch - $6,899.00 (The Home Depot)

• 10 kW Generac — ~$4,329: Good if you mainly need essentials such as refrigerator, lights, HVAC controls, internet, and selected circuits.

• 14 kW Generac — ~$5,839: My default recommendation for many homes.

• 18 kW Generac — ~$6,639: Better if you have a larger home or want to run more HVAC/appliances simultaneously.

• 20 kW Kohler — ~$6,299: Worth considering if you want additional capacity without jumping to a very large generator.

• 18 kW Briggs & Stratton — ~$6,899: Another strong whole-home option with a 200A transfer switch.

Generac currently lists natural-gas/LP standby generators from 10 kW through much larger 28 kW models.Generac

One important point: buying the generator online isn't the same as installing it. A natural-gas standby unit needs proper electrical, gas-line sizing, transfer-switch installation, clearances, grounding, and permitting. For example, the Generac 14 kW requires 3.5" water-column natural-gas pressure and can consume roughly 256 ft³/hour at 100% load, so your home's gas service needs to be able to supply it.Generac

If you tell me (1) your home's approximate square footage, (2) whether you have central AC and its tonnage, and (3) whether you want to run the entire house or just essentials, I can tell you exactly which kW size I'd buy and which online listing is the best deal.

Yes. If you specifically want natural gas, I'd narrow it to these:

Best options

• Generac 10kW Natural Gas/Propane Standby Generator - $4,329.00 (The Home Depot)

Best for automatic home backup: Generac 10kW — about $4,329 with a 100A transfer switch. It connects to your home's natural-gas supply and starts automatically during an outage.The Home Depot

• FIRMAN 10,000W/8,000W Tri-Fuel Portable Generator - $1,591.28 (The Home Depot)

Best portable option: FIRMAN T08072 — about $1,591, and it can run on natural gas, propane, or gasoline. It's a good choice if you don't want a permanently installed generator.

• Generac 14kW Natural Gas/Propane Standby Generator - $5,839.00 (The Home Depot)

For a larger home: Generac 14kW — about $5,839 including a 200A transfer switch. Home Depot currently lists it for online purchase.The Home Depot

One important distinction

If you have natural gas service at your house, I would generally choose a standby generator if you want the generator to automatically take over when the power fails. Portable tri-fuel generators are considerably cheaper, but you'll need to set them up and connect them when the outage occurs.

For comparison, Home Depot currently lists natural-gas-capable portable models such as the Champion 11,500/9,200W tri-fuel for $999 and Westinghouse 14,500/11,500W tri-fuel for $1,499.The Home Depot

If you tell me your budget (e.g. under $1,000, $2,000, or $5,000) and whether you want portable or whole-house automatic backup, I can pick the best 2–3 models currently available online.

You can buy several types of natural gas generators online depending on whether you want a portable/tri-fuel generator (which rolls out and hooks up to a natural gas line) or a permanent home standby generator (which is permanently installed outside).

Popular, reliable models available for online purchase include:

1. Portable & Tri-Fuel Generators (Run on Gas, Propane, and Natural Gas)

• Westinghouse WGen11500TFc / WGen14500TFc: A massive tri-fuel portable unit featuring remote electric start, heavy-duty frame, and plenty of running wattage to back up major home appliances. Available online at The Home Depot.homedepot.com
• WEN TF1450X (14,500-Watt Tri-Fuel): Transfer-switch ready with wheel kits and a CO watchdog sensor, making it easy to integrate safely into a home inlet box. Available on platforms like Amazon.amazon.com

2. Permanent Home Standby Generators (Auto-connect to Natural Gas)

• Generac Guardian Series (e.g., 14kW to 22kW models) : The industry standard for whole-home automatic backup. It senses power loss and kicks on automatically using your existing natural gas line. Available to order online through Lowe's or Acme Tools.[1]
• Briggs & Stratton PowerProtect Series (e.g., 22kW) : Features NGMax technology for superior performance on natural gas and a tight installation footprint. Available from specialized online power equipment retailers like Mr. Volt Inc..[1]

To help narrow down the best option, tell me:

• Are you looking for a portable unit you can wheel out, or a permanent standby unit?
• Roughly how many watts or which appliances do you need to power during an outage?

You can buy several top-tier natural gas-capable generators online, ranging from heavy-duty portable tri-fuel units to permanent whole-house standby systems.

1. Portable & Tri-Fuel Generators (Run on Natural Gas, Propane, or Gasoline)

• • DuroMax XP13000HXT: A massive portable tri-fuel generator that outputs up to 11,000 surge watts and 8,500 running watts on a natural gas line. It features idle control, CO alert, and wheel kits. Available online via retailers like Home Depot or specialized online power equipment dealers.youtube.com+1
• • Westinghouse 18,000/14,500-Watt Tri-Fuel Portable Generator: A high-capacity option capable of running on natural gas for heavy emergency backup loads. Available for order online at Home Depot.
• • Generac GP9500E Tri-Fuel: A versatile portable option that easily connects to standard home gas lines with a turn of a dial, outputting reliable emergency power.

2. Whole-House Home Standby Generators (Permanent Natural Gas Installation)

• • Generac Guardian Series (e.g., 18kW - 24kW Models): The industry standard for automatic home backup. They hook directly to your municipal natural gas or liquid propane supply and turn on automatically when the power goes out. You can purchase these systems online bundled with transfer switches via Norwall PowerSystems or Home Depot.[1]
• • Cummins QuietConnect RS17A (17kW): Known for exceptionally quiet, smooth operation and a robust commercial-grade engine design that easily powers heavy residential loads like central air units. Available online at Norwall PowerSystems.[1]

To help narrow down the right option, let me know:

• Are you looking for a portable unit you can wheel out during an emergency or a permanent standby unit wired into your home?
• What appliances or square footage do you need to power?

Yes. If you have a natural-gas line at your home, there are several good options you can buy online right now.

My top picks

• Generac 24kW Natural Gas/Propane - $6,599.00 (The Home Depot)

• Generac 14kW Natural Gas/Propane - $4,799.00 (The Home Depot)

• Generac 18kW Natural Gas/Propane - $5,599.00 (The Home Depot)

• Westinghouse 10,500W Tri-Fuel Portable - $1,249.00 (The Home Depot)

• Briggs & Stratton 26kW Dual Fuel - $7,195.00 (The Home Depot)

• Best overall for a whole house:

— currently about $6,599. It runs on natural gas or propane and automatically starts during an outage.Generac

• Best value for whole-house backup:

— about $4,799. Good if you don't need to run every large appliance simultaneously.

• Midrange choice:

— about $5,599.

• Best inexpensive portable:

— about $1,249, with 10,500 running watts and the ability to use natural gas, propane, or gasoline.

• Another strong whole-house option:

— about $7,195.

What I'd buy

If this is for your home's permanent backup, I'd lean toward the Generac 18kW or 24kW. Generac currently offers gaseous-fuel standby units from roughly 10kW through 28kW, with natural gas/LP options and automatic operation.Generac

If you want something you can wheel out during an outage and connect to natural gas, the Westinghouse 10,500W tri-fuel is much less expensive.

One important distinction: a permanent natural-gas standby generator normally requires a transfer switch and professional installation, while a portable tri-fuel generator is considerably more flexible but doesn't automatically power your house unless properly connected through an appropriate transfer setup.

If you tell me (1) your approximate house size, (2) whether you have central A/C, and (3) your budget, I can narrow it down to the best 2–3 generators you can buy online, including the likely wattage you need.