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 118 results
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300005Cummins RS13A 13kW NG/LPV Aluminum Enclosure 120/240V (C13N6H) – A062E510 Cold Weather
Quiet ConnectTM Series – RS13A is designed to operate in cold weather with performance down to 0 °F (-18 °C) out of the box. The extreme cold weather models can perform down to -40 °F (-40 °C) out of the box. It is tested and certified per the latest EPA, UL, and CSA standards. The generator meets NFPA 37 which allows it to be installed 18 inches from a building. It has powerful motor starting ability and can easily start and run a 5-ton A/C¹ under full pre-load.
- Watts or kW: 10-20
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300004When the time comes, a Cummins Onan Air Cooled generator will be there for you. Power loss can happen to anyone, anywhere. Power loss is not only due to severe weather but can also happen from different causes such as a squirrel disrupting a power line. ThatÂ’s why it is nice to have a backup Cummins Onan generator so you can feel the cool breeze of an air conditioner or the warmth of a furnace. These air cooled generators provide enough power so that you and your household can continue to enjoy life even in the event of a power outage. Ensure that you are prepared for an emergency, get an air cooled generator from Colorado Standby today. We offer fast and free shipping on all products.Â
- Watts or kW: 10-20
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300006Cummins RS17A 17kW NG/LPV Aluminum Enclosure 120/240V (C17N6H) – A062E511 Cold Weather
Quiet ConnectTM Series – RS17A is designed to operate in cold weather with performance down to 0 °F (-18 °C) out of the box. The extreme cold weather models can perform down to -40 °F (-40 °C) out of the box. It is tested and certified per the latest EPA, UL, and CSA standards. The generator meets NFPA 37 which allows it to be installed 18 inches from a building. It has powerful motor starting ability and can easily start and run a 5-ton A/C¹ under full pre-load.
- Watts or kW: 10-20
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300003Cummins RS17A 17KW Natural Gas and Propane Generator C17N6H – A061C596 Warm Weather
In the event of a power outage, you want to ensure that your house is ready. A Cummins Onan air-cooled generator will give you the power needed to keep your air conditioning, furnace, and entire house running. Cummins Onan has been one of the biggest names in the industry for years and provides high quality, long-lasting generators at affordable prices. We want to make the process of getting a generator as simple as possible. Call our highly experienced staff and they can answer any questions you may have and get you the right generator for your home. We also offer fast and free shipping on all of our products including the A054E397
Check out more Cummins Air Cooled Generators!
- Watts or kW: 10-20
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300007Cummins RS20A 20kW NG/LPV Aluminum Enclosure 120/240V (C20N6H) – A062E512 Cold Weather
Quiet ConnectTM Series – RS20A is designed to operate in cold weather with performance down to 0 °F (-18 °C) out of the box. The extreme cold weather models can perform down to -40 °F (-40 °C) out of the box. It is tested and certified per the latest EPA, UL, and CSA standards. The generator meets NFPA 37 which allows it to be installed 18 inches from a building. It has powerful motor starting ability and can easily start and run a 5-ton A/C¹ under full pre-load.
- Watts or kW: 10-20
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300002When the time comes, a Cummins Onan standby generator will be there for you.
Power loss can happen anywhere, anytime. And though you tend to typically associate power loss with severe weather, something as innocent as a common squirrel can disrupt the operation of a household.
ThatÂ’s why itÂ’s nice to know a Cummins Onan residential standby generator enables you to feel the cool breeze of an air conditioner or the warmth of a furnace; prepare meals or follow the news on your TV.
In fact, a Cummins Onan residential standby generator provides enough dependable power so you can continue to enjoy life—even when a power loss brings the world around you to a screeching halt.
- Watts or kW: 10-20
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303255Cummins RS20AC 200A SE ATS & 20kW NG/LPV Aluminum Enclosure 120/240V (C20N6HC) – A065D238 Cold Weather
Quiet ConnectTM Series – RS20AC is designed to operate in cold weather with performance down to 0 °F (-18 °C) out of the box. The extreme cold weather models can perform down to -40 °F (-40 °C) out of the box. It is tested and certified per the latest EPA, UL, and CSA standards. The generator meets NFPA 37 which allows it to be installed 18 inches from a building. It has powerful motor starting ability and can easily start and run a 5-ton A/C¹ under full pre-load.
Â
- Watts or kW: 10-20
