Best Standby Generators with a Transfer Switch

Last updated: November 1, 2026

Kits that come with an automatic transfer switch, so the price covers everything but the install.

Prices were last checked November 1, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Best Standby Generators with a Transfer Switch: Under 15 kW

  1. Champion 12.5kW Home Standby
    #1 of 74.3Full review

    For homes that want essentials backed up automatically at a low price and a long parts warranty.

    Norwall $4,199
    $4,199
    12.5 kW11 kW63 dBA
  2. Champion 14kW aXis
    #2 of 74.2Full review

    For budget buyers who want a whole-house switch and a long warranty for essentials and a small air conditioner.

    Norwall $4,999
    $4,999
    14 kW12.5 kW62 dBA
  3. Champion 8.5kW Home Standby
    #3 of 74.2Full review

    For small homes or cabins that need a few essential circuits backed up automatically on a tight budget.

    Norwall $3,299
    $3,299
    8.5 kW7.5 kW59.5 dBA
  4. Generac 10kW Standby 7321
    #4 of 73.5Full review

    For smaller homes that only need the fridge, furnace, well pump and lights during an outage, at a low price.

    Amazon $3,896.10
    $3,896.10
    10 kW9 kW61 dBA
  5. Generac 14kW Standby 7323
    #5 of 73.4Full review

    For homes that want essentials and a small air conditioner covered, with Generac’s cellular monitoring.

    Amazon $5,255.10
    $5,255.10
    14 kW14 kW65 dBA
  6. Cummins Quiet Connect RS13A 13kW
    #6 of 73.2Full review

    For homes on natural gas that want essentials covered by a quiet, well supported brand with monitoring included.

    Norwall $5,384.39
    $5,384.39
    13 kW13 kW65 dBA
  7. Kohler 14RCAL 14kW
    #7 of 73.0Full review

    For homes that want essentials plus one air conditioner managed automatically, with a full parts and labor warranty.

    Norwall $5,899
    $5,899
    14 kW12 kW69 dBA

Best Standby Generators with a Transfer Switch: 15 to 22 kW

  1. Champion 22kW aXis
    #1 of 94.2Full review

    For homes with central air that want whole-house backup for the least money and a long parts warranty.

    Norwall $5,699
    $5,699
    22 kW19.8 kW67 dBA
  2. Champion 22kW fleX
    #2 of 94.0Full review

    For coastal or wet climates that want Champion’s 22 kW and long warranty in a rust-proof aluminum housing.

    Amazon $6,399
    $6,399
    22 kW19.8 kW67 dBA
  3. Briggs & Stratton PowerProtect+ 22kW
    #3 of 93.4Full review

    For homes with central air on natural gas that want full output, built-in monitoring and seven years of full cover.

    Norwall $7,289 Signature Solar $7,289
    $7,289
    22 kW22 kW66 dBA
  4. Generac 22kW Standby 7325
    #4 of 93.4Full review

    For typical homes with central air that want the best known brand and a whole-house switch in the box.

    Amazon $6,506.10
    $6,506.10
    22 kW21 kW67 dBA
  5. Generac 18kW Standby 7324
    #5 of 93.2Full review

    For average homes with one central air conditioner that want a whole-house switch included.

    Amazon $5,975.10
    $5,975.10
    18 kW17 kW65 dBA
  6. Cummins Quiet Connect RS20AC 20kW
    #6 of 93.2Full review

    For homes with central air that want a quiet 20 kW unit with monitoring included and a service-entrance switch in the box.

    Norwall $6,662.42
    $6,662.42
    20 kW18 kW65 dBA
  7. Briggs & Stratton PowerProtect+ 18kW
    #7 of 93.2Full review

    For average homes on natural gas that want full rated output and a long warranty with service included.

    Norwall $6,899
    $6,899
    18 kW18 kW66 dBA
  8. Cummins Quiet Connect RS17A 17kW
    #8 of 93.0Full review

    For average homes on natural gas that want full rated output and built-in monitoring from a commercial power brand.

    Norwall $6,264.97
    $6,264.97
    17 kW17 kW65 dBA
  9. Kohler 20RCAL 20kW
    #9 of 92.9Full review

    For average homes with central air that want load management in the box and Kohler’s full coverage warranty.

    Norwall $6,848
    $6,848
    20 kW18 kW70 dBA

Best Standby Generators with a Transfer Switch: Over 22 kW

  1. Briggs & Stratton PowerProtect+ 26kW
    #1 of 53.3Full review

    For larger homes that want the most output and the longest full service warranty among the big brands.

    Norwall $8,069 Signature Solar $8,069
    $8,069
    26 kW24 kW67 dBA
  2. Generac 26kW Standby 7328
    #2 of 53.2Full review

    For larger homes with two air conditioners that want to run everything without load shedding.

    Amazon $7,253.10
    $7,253.10
    26 kW24 kW67 dBA
  3. Generac 24kW Standby 7326
    #3 of 53.2Full review

    For larger homes with a big air conditioner or electric range that want headroom on propane.

    Amazon $6,875.10
    $6,875.10
    24 kW22.5 kW67 dBA
  4. Generac 28kW Standby 7329
    #4 of 53.1Full review

    For big all-electric homes that want the most output Generac fits in an air-cooled cabinet.

    Amazon $8,387.10
    $8,387.10
    28 kW25 kW67 dBA
  5. Kohler 26RCAL 26kW
    #5 of 53.0Full review

    For larger homes that want the biggest Kohler air-cooled unit with automatic load shedding and full service coverage.

    Norwall $8,349
    $8,349
    26 kW24 kW67 dBA