Small Business Backup & Home Standby Generators
When the grid goes down, your power doesn’t have to. At Colorado Standby, we carry a wide selection of home generators for sale, including industry-leading options from Champion and Cummins. Whether you’re safeguarding your family during a storm or keeping your business running during an outage, these models deliver dependable, automatic backup power when it matters most.
Choose from whole house generators equipped with automatic transfer switches to keep essential appliances and everything else running without interruption. Our lineup includes home standby generators ranging from compact 8.5kW models to powerful 20kW+ units designed for seamless energy backup and fuel efficiency.
Need a business backup generator? We’ve got you covered with commercial-grade systems that ensure continuous operation for your office, retail store, or critical infrastructure. These systems offer dual fuel capability, quiet operation, and rugged performance in any condition.
Whether you’re shopping for whole house generators or upgrading to a smarter, quieter home standby generator, Colorado Standby has the right power solution for your needs. Enjoy factory-direct shipping, free liftgate delivery, and expert support from our knowledgeable team.
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From voltage regulators to fuel pumps, our generator parts list includes high-quality options for residential, commercial, and industrial applications. Shop our collection online to get the reliable power equipment parts you need—delivered straight to your door.
Find the Right Replacement Generator Parts
Generators are essential for uninterrupted power, and having the right components is key to long-term performance. Our selection includes:- Fuel System Parts – Keep your generator running efficiently with replacement fuel filters, injectors, and pumps.
- Voltage Regulators & Control Boards – Ensure stable power output with high-quality regulators and electronic controls.
- Cooling System Parts – Prevent overheating with radiators, water pumps, and cooling fans.
- Battery & Electrical Components – From starters to alternators, we carry the parts needed for smooth operation.
Shop Generator Parts Online with Confidence
When you buy power equipment parts from Colorado Standby, you get:- Top-Quality Products – Sourced from trusted manufacturers for long-lasting performance.
- Expert Support – Our knowledgeable team can help you find the exact replacement generator parts you need.
- Fast Shipping – Get critical components delivered quickly to minimize downtime.
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Don’t see the products you are looking for?
Please use the Products Drop-Down in the main menu above to select a different category.
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Showing 1–12 of 128 results
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RS13A/AEThe Cummins 13kW generator RS13 comes in two different options:
RS13A (A071Z390) Standard 120/240V NG/LP 1-PH
RS13AE (A071Z407) Extreme Cold Weather 120/240V NG/LP 1-PH
Please select variable options below for specific price.- Watts or kW: 10-20
Available on backorder
$3,965.27 – $4,320.83Select options This product has multiple variants. The options may be chosen on the product page -
RS17ACThe Cummins RS17 is a 17kW generator ideal for mid-sized homes—perfect for running multiple large appliances during an outage without compromise.
A071Z394 – RS17A 120/240V Single-Phase
A071Z401 – RS17AE 120/240V Single-Phase with Extreme Cold Weather KitPlease select variable options below for specific price.
- Watts or kW: 10-20
Available on backorder
$4,783.54 – $5,007.82Select options This product has multiple variants. The options may be chosen on the product page -
RS20Cummins RS20A 20kW Generator Available Models:
- RS20A (A071Z397) Generator with NO Extreme Cold Weather Kit.
- RS20AE (A071Z202) Generator includes Extreme Cold Weather Kit
- RS20A + RA200SE (A071Z402) includes Generator with RA200SE ATS – Does NOT Extreme Cold Weather Kit
- RS20AE +RA200SE (A071Z395) includes Generator with RA200SE ATS & Extreme Cold Weather Kit (select “Yes” on all 3 options)
Please select variable options for specific price.
- Watts or kW: 20
Available on backorder
$5,247.76 – $6,448.24Select options This product has multiple variants. The options may be chosen on the product page -
RS25The Cummins RS25 is a 25kW generator that delivers quiet, reliable whole-home backup power with advanced controls and a weather-resistant design.
A051Y400 – 120/240V-3Ph
A051Y399 – 120/208V-3Ph
A051Y239 – 120/240V-1PhPlease select variable options below for specific price.
- Watts or kW: 21-50
Available on backorder
$16,035.10 – $16,287.26Select options This product has multiple variants. The options may be chosen on the product page -
RS30The Cummins RS30 is a 30kW generator that delivers quiet, reliable whole-home backup power with advanced controls and a weather-resistant design.
A051Y401 – RS30 120/240V Single-Phase
A051Y402 – RS30 120/208V Three-Phase
A051Y405 – RS30 120/240V Three-PhasePlease select variable options below for specific price.
- Watts or kW: 21-50
Available on backorder
$17,275.60 – $17,387.30Select options This product has multiple variants. The options may be chosen on the product page -
RS36The Cummins RS36 is a 36kW generator built for larger homes and light commercial use, offering high-capacity standby power with quiet performance and advanced diagnostics.
A051Y417 – RS36 120/240V Single-Phase
A051Y413 – RS36 120/240V Three-Phase
A051Y416 – RS36 277/480V Three-PhasePlease select variable options below for specific price.
- Watts or kW: 21-50
Available on backorder
$17,798.54 – $17,889.93Select options This product has multiple variants. The options may be chosen on the product page -
Available on backorder
$18,018.55Select options This product has multiple variants. The options may be chosen on the product page
