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Standby Generators

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Wattage

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Fuel Type
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Fuel Type

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Choose the fuel type which is available to you. Bare in mind that extended use will require repeated re-fueling especially for home standby in which case propane or natural gas would be preferred because they can be connected to the home's gas supply.

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Brands

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Use the slider to adjust to your desired price or price range. If you prefer, you can type in your desired range in the boxes below.

Phase
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Phase

Most residential configurations are single (1) phase. Business and commercial buildings usually have (3) phase entrance service panels to handle the higher electrical demands with additional step down panels.

Consult your electrician to verify your configuration before purchasing.

Amperage
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Amperage

This is the max amperage your generator can produce.

Amperage=Wattage/Voltage

Amps=3000 watts / 120 volts = 25 amps

Amps=3000 watts / 240 volts = 12.5 amps

Voltage
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Voltage

This is the rated voltage(s) your generator will produce. Voltage and phase configurations should match the panel or circuit you are powering. The following are some common configurations:

1 Phase: 120/240 volts

3 Phase: 120/208 volts

3 Phase: 120/240 volts

3 Phase: 277/480 volts

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CA Carb Approved

CARB = California Air Resources Board. CARB sets the emissions laws for combustible engines in California. CA Carb Approved means that an engine meets or exceeds CARB laws.

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Shop generators that are in stock and ready to ship. See product page for further shipping information.

On Sale
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Shop generators that are discounted and currently 10%-30% off of manufacturer pricing. Generators are discounted on a monthly basis and this category will be updated on the 1st of every month.

New Products
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Shop the newest generators on the market. These are the newest generators offered by Build.com.

Made In America
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Shop generators that have been made right here in the U.S.A. Each fan has been made using materials solely manufactured in the United States.

Consumer Warranty
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Consumer Warranty

Consult your owners manual for complete explanation of warranty coverage.

  • Kohler 20RESAL

    20 kW, 120/240V Liquid Propane / Natural Gas Single-Phase Composite Standby Generator with 200 Amp Service Entrance Rated Automatic Transfer Switch with Load Shedding (20RESAL-SE)

    • Free Shipping!
    • $4,496.00
  • Kohler 14RESAL-200

    14 kW, 120/240V Liquid Propane / Natural Gas Composite Standby Generator with 200A Whole House Automatic Transfer Switch

    • Free Shipping!
    • $3,742.00
  • Generac 6244

    20kW Aluminum Standby Generator System (200A Service Disconnect + AC Shedding) from the Guardian Series

    • Guardian Collection
    • Wattage: 20000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 83
    • Voltage: 120, 240
    • Free Shipping!
    • $4,409.00
  • Generac 6241

    14kW, 120/240V Standby Generator System with 200A Service Disconnect and AC Shedding from the Guardian Series

    • Guardian Collection
    • Wattage: 14000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 58
    • Voltage: 120, 240
    • Free Shipping!
    • $3,429.00
  • Generac 6237

    8kW, 120/240V Liquid Propane / Natural Gas Standby Generator System with 50A 10-Circuit Switch from the Guardian Series

    • Guardian Collection
    • Wattage: 8000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 33
    • Voltage: 120, 240
    • Free Shipping!
    • $2,349.00
  • Generac 6437

    11kW Standby Generator System with a 50A 12-Circuit Switch from the Guardian Series

    • Wattage: 11000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 46
    • Voltage: 120, 240
    • Free Shipping!
    • $2,839.00
  • Generac 6438

    11kW, 120/240V Standby Generator System with 200A Service Disconnect and AC Shedding from the Guardian Series

    • Guardian Collection
    • Wattage: 11000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 46
    • Voltage: 120, 240
    • Free Shipping!
    • $2,939.00
  • Kohler 20RESA

    20 kW, 120/240V Liquid Propane / Natural Gas Single-Phase Composite Standby Generator

    • Free Shipping!
    • $4,197.00
  • Generac 6439

    11kW, 120/240V Home Standby Generator from the Guardian Series

    • Guardian Collection
    • Wattage: 11000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 46
    • Voltage: 120, 240
    • Free Shipping!
    • $2,399.00
  • Generac 6240

    14kW, 120/240V Standby Generator System with 100A 14-Circuit Switch from the Guardian Series

    • Guardian Collection
    • Wattage: 14000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 58
    • Voltage: 120, 240
    • Free Shipping!
    • $3,292.00
  • Kohler 14RESA

    14 kW, 120/240V Liquid Propane / Natural Gas Single-Phase Composite Standby Generator

    • Free Shipping!
    • $3,394.00
  • Generac 5837

    7 kW, 120/240V Steel Standby Generator System with 50A 8-Circuit Transfer Switch from the Guardian Series

    • Wattage: 7000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 25
    • Voltage: 120, 240
    • Free Shipping!
    • $1,861.00
  • Generac 6247

    14kW, 120/240V Home Standby Generator from the Guardian Series

    • Guardian Collection
    • Wattage: 14000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 58
    • Voltage: 120, 240
    • Free Shipping!
    • $2,939.00
  • Generac 6245

    8kW, 120/240V Home Standby Generator from the Guardian Series

    • Guardian Collection
    • Wattage: 8000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 33
    • Voltage: 120, 240
    • Free Shipping!
    • $2,149.00
  • Briggs and Stratton 40346

    20 kW, 120/240V Single-Phase Steel Standby Generator with 200A Automatic Transfer Switch with Service Disconnect

    • Wattage: 20000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 83
    • Voltage: 120, 240
    • Free Shipping!
    • $4,299.00
  • Generac 5818

    6 kW, 120V Steel Standby Generator for Off Grid Applications from the EcoGen Series

    • Wattage: 6000
    • Fuel Type: Liquid Propane
    • Amperage: 50
    • Voltage: 120
    • Free Shipping!
    • $3,674.00
  • Briggs and Stratton 40400

    12 kW 120/240V Single-Phase Steel Standby Generator with 200A Automatic Transfer Switch with Service Disconnect

    • Wattage: 12000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 50
    • Voltage: 120, 240
    • Free Shipping!
    • $3,299.00
  • Briggs and Stratton 40451

    10 kW, 120/240V Steel Standby Generator with 100A 16 Circuit + AC Shedding

    • Fuel Type: Liquid Propane, Natural Gas
    • Voltage: 240
    • Free Shipping!
    • $2,899.99
  • Generac 6249

    17kW, 120/240V Aluminum Home Standby Generator from the Guardian Series

    • Guardian Collection
    • Wattage: 17000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 71
    • Voltage: 120, 240
    • Free Shipping!
    • $3,850.00
  • Briggs and Stratton 40393

    16 kW, 120/240V Single-Phase Steel Standby Generator with 100A 16-Circuit Automatic Transfer Switch

    • Wattage: 16000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 67
    • Voltage: 120, 240
    • Free Shipping!
    • $4,199.99
  • Briggs and Stratton 40345

    12 kW, 120/240V Single-Phase Steel Standby Generator with 100A 16-Circuit Automatic Transfer Switch

    • Wattage: 12000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 50
    • Voltage: 120, 240
    • Free Shipping!
    • $3,199.99
  • Winco PSS12H4W

    12kW, 120/240V Standby Generator with Honda GX Engine

    • PSS Collection
    • Wattage: 10000, 12000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 50
    • Voltage: 120, 240
    • Free Shipping!
    • $4,395.99
  • Winco PSS8B4W

    8kW, 120/240V Home Standby Generator

    • PSS Collection
    • Wattage: 7200, 8000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 33
    • Voltage: 120, 240
    • Free Shipping!
    • $3,340.50
  • Briggs and Stratton 40401

    16 kW, 120/240V Single-Phase Steel Standby Generator with 200A Automatic Transfer Switch with Service Disconnect

    • Wattage: 16000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 67
    • Voltage: 120, 240
    • Free Shipping!
    • $4,299.99
  • Briggs and Stratton 40445

    8kW/6kW, 120/240V Steel Standby Generator with 50A 10-Circuit Switch

    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 33
    • Free Shipping!
    • $2,199.99
  • Kohler 20RESA-QS3

    20 kW, 120/240V Liquid Propane / Natural Gas CSA Certified Single-Phase Composite Standby Generator

    • $4,073.00
  • Generac QT02515ANSX

    25 kW, 120/240V Steel Standby Power Generator from the Guardian Series

    • Guardian Collection
    • Wattage: 25000
    • Fuel Type: Liquid Propane, Natural Gas
    • Amperage: 104
    • Voltage: 120, 240
    • Free Shipping!
    • $8,231.00

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