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Champion 12.5 kW Select Circuit Home Standby Generator and 100A Switch 10 Year Warran (100179) vs Champion 10 kW Whole House Home Standby Generator and 200A Switch with fleX Technology (201597)

Two of the home standby & large portable generators in our best home standby & large portable generators: champion, westinghouse, duromax & firman comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.

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Best for: 12.5 kW select-circuit kit at 63 dB(A)

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Best for: 10 kW whole-house kit at 61 dB(A)

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Spec-by-spec comparison

Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.

SpecChampion 12.5 kW Select Circuit Home Standby Generator and 100A Switch 10 Year Warran (100179)Champion 10 kW Whole House Home Standby Generator and 200A Switch with fleX Technology (201597)Weight
Running watts (best listed fuel)The highest continuous (rated) output the maker lists on any fuel: gasoline for most portables, propane for home standby units. Output on other fuels is in each product's notes. 12500 W 10000 W 35%
NoiseThe maker's noise figure in decibels. Champion lists operational volume for its standby units; load and distance otherwise vary by maker. 63 dBA 61 dBA 15%
Runs on natural gasYes for home standby and tri-fuel models that can run on piped natural gas, which avoids refueling in a long outage. Yes Yes 15%
Runtime at 50% load (gasoline)Hours on a full gasoline tank at half load. Home standby units run on piped gas or a propane tank, so they show Not listed and score the category minimum on this criterion; their strength shows in the other criteria. Not listed Not listed 10%
Transfer switch / transfer-switch readyYes for home standby kits that include an automatic transfer switch, and portables with a 120/240V L14-30R or 14-50R outlet or a maker 'transfer switch ready' listing. Yes Yes 10%
CO shutoffYes when the maker lists automatic carbon monoxide shutoff. Champion's standby pages don't list one, so it shows as Not listed. Not listed Not listed 10%
CARB compliantYes when the maker lists CARB compliance. Not listed counts as no. Not listed Not listed 5%
Fuel tankNot applicable (piped natural gas or a propane tank)Not applicable (piped natural gas or a propane tank)info
OutletsHome standby: includes a 100A automatic transfer switchHome standby: includes a 200A automatic transfer switchinfo
CO shutoffNot published by the makerNot published by the makerinfo
CARBNot published by the makerNot published by the makerinfo
Rated watts on propane12,500 W10,000 Winfo
Rated watts on natural gas11,000 W9,000 Winfo
Engine717cc500ccinfo
InstallPermanent outdoor installation by a licensed installerPermanent outdoor installation by a licensed installerinfo
GenPick score5.7/105.3/10100%

Where each one comes out ahead

Champion 12.5 kW Select Circuit Home Standby Generator and 100A Switch 10 Year Warran (100179)

Better published figure on: Running watts (best listed fuel).

What we like

    Watch out for

    • Runtime at 50% load (gasoline) not published by Champion

    Champion 10 kW Whole House Home Standby Generator and 200A Switch with fleX Technology (201597)

    Better published figure on: Noise.

    What we like

      Watch out for

      • Runtime at 50% load (gasoline) not published by Champion

      Verdict

      The 12.5 kW lists 12,500 vs 10,000 W on propane with a 100A select-circuit switch; the 10 kW lists a 200A whole-house switch and 61 vs 63 dB(A).

      Champion 12.5 kW Select Circuit Home Standby Generator and 100A Switch 10 Year Warran (100179) on AmazonChampion 10 kW Whole House Home Standby Generator and 200A Switch with fleX Technology (201597) on Amazon
      Spec sources

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