Generators

Home standby, portable, and commercial generators from Generac, Cummins, Briggs & Stratton, Champion, Kohler and more. Automatic transfer switches and installation accessories. Trade pricing, full OEM warranty, 7-10 business days nationwide delivery. Popular Generators models & specs Cummins C175D6D - 175kW Quiet Connect Series 120/240V 1 Phase Liquid Cooled Standby Generator - A061T476 Briggs &…

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Generac Guardian 24KW Home Backup Air-Cooled Gas Engine Generator in Aluminum Enclosure - G007210-10
Generac
Generac Guardian 24KW Home Backup Air-Cooled Gas Engine Generator in Aluminum Enclosure - G007210-10
$6,782.00
Ships in 2–4 weeks
Generac Guardian 26Kw Home Backup Air-Cooled Gas Engine Generator in Aluminum Enclosure - G007290-0
Generac
Generac Guardian 26Kw Home Backup Air-Cooled Gas Engine Generator in Aluminum Enclosure - G007290-0
$6,682.25
Ships in 2–4 weeks
Cummins RS20A - 20kW Quiet Connect Series 120/240V 1 Phase Air Cooled Standby Generator - A071Z397
Cummins
Cummins RS20A - 20kW Quiet Connect Series 120/240V 1 Phase Air Cooled Standby Generator - A071Z397
$5,789.09
Ships in 2–4 weeks
Kohler 20RESCL, RXT 200 Amp, SE, Load Shed Kit, NEMA 3R 20RESCL-200SELS
Kohler
Kohler 20RESCL, RXT 200 Amp, SE, Load Shed Kit, NEMA 3R 20RESCL-200SELS
$8,742.89
Ships in 2–4 weeks

1036 products

Top Sellers — Market Front-Runners The same Tier-1 lines as the big national players · live PES pricing
Top SellerWestinghouse WGen3600DFc - 3600W Dual Fuel Portable GeneratorWestinghouse Westinghouse WGen3600DFc - 3600W Dual Fuel Portable Gen... $626.00 Available to orderLead time confirmed at checkoutTop SellerWestinghouse WGen3600cv - 3600W Portable GeneratorWestinghouse Westinghouse WGen3600cv - 3600W Portable Generator $366.00 Available to orderLead time confirmed at checkoutTop SellerGenerac GB2000 PS 1.6KW 50STGenerac Generac GB2000 PS 1.6KW 50ST $1,864.33 Available to orderShips in 2–4 weeksGenerac EZ Transfer Operator - 5447Generac Generac EZ Transfer Operator - 5447 $371.49 Available to orderShips in 2–4 weeks

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About Generators

Home standby, portable, and commercial generators from Generac, Cummins, Briggs & Stratton, Champion, Kohler and more. Automatic transfer switches and installation accessories. Trade pricing, full OEM warranty, 7-10 business days nationwide delivery.

Popular Generators models & specs

Looking for something older or hard to find? Browse the Deep Catalog Archive — long-tail models not shown in our main categories.

Frequently Asked Questions

Standby or portable — which generator type do I need?

Standby generators are permanently installed, run on natural gas or propane, start automatically within seconds of an outage, and power the whole house through a transfer switch. Portables run on gasoline (or dual fuel), you wheel them out and connect manually, and they cover selected circuits. If outages cost you comfort or business, buy standby; if they're an occasional inconvenience, a portable plus a manual transfer switch is the budget answer.

What size generator does my house need?

Add up what must run simultaneously. Essentials only (fridge, furnace blower, lights, sump pump): 5-7.5kW portable or 10-14kW standby. Most of a typical home with one AC: 18-22kW standby. True whole-home with large AC or electric heat: 24-28kW. When in doubt, size up one step — generators are happiest at 50-70% load, not pinned at maximum.

Natural gas, propane, gasoline, or diesel?

Home standby: natural gas if you have a meter (unlimited runtime), propane if you don't. Portables: gasoline for availability, dual-fuel propane models for long storage life (propane doesn't degrade like gasoline). Diesel dominates commercial and prime-power applications for fuel efficiency and engine longevity. Every product page lists the fuel options for that model.

Do I need a transfer switch?

For a standby generator, yes — an automatic transfer switch is what makes the system start and switch without you, and it's required by code for any generator feeding your panel. For portables, a manual transfer switch or interlock kit is the safe (and code-compliant) way to power hardwired circuits. Backfeeding through a dryer outlet is illegal and can kill a line worker — don't do it.

What permits does a standby generator need?

Permanently installed standby generators require an electrical permit, usually a gas-plumbing permit, and sometimes a zoning/setback review — your installer typically pulls all three. Inspection follows the install. Portable generators used as portables need no permits; the manual transfer switch they connect to does.

How are generators delivered?

Portable generators ship parcel or LTL depending on weight. Standby generators (450-600 lbs) ship freight on a pallet with curbside delivery — you'll need equipment or a crew to move the unit to its pad, and liftgate service is available on request. Inspect the crate at delivery and note any damage on the freight receipt.