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expiredTattyBear | Staff posted Nov 15, 2022 04:26 PM
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expiredTattyBear | Staff posted Nov 15, 2022 04:26 PM

DuroMax 12,000W 457cc Portable Generator w/ Dual Fuel Electric Start $899 + Free Shipping

$899

$1,399

35% off
Amazon
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Amazon.com [amazon.com] has DuroMax XP12000EH 12,000W 457cc Gas/Propane Portable Generator w/ Dual Fuel Electric Start on sale for $899 Shipping is free
  • About this Product:
    • Dual fuel technology allows the ability to run on propane or gasoline
    • Protects your investment by automatically shutting the generator off when it senses that the oil is low
    • 12,000 starting watts and 9, 500 running watts, This unit can handle heavy loads from lights and a refrigerator to a home air conditioner and high amperage power tools.
    • Get the maximum power from each of the 120 volt receptacle. Choose between operating the generator at both 120 V and 240 V Simultaneously, or at 120 only with full power.
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About the Poster
Amazon.com [amazon.com] has DuroMax XP12000EH 12,000W 457cc Gas/Propane Portable Generator w/ Dual Fuel Electric Start on sale for $899 Shipping is free
  • About this Product:
    • Dual fuel technology allows the ability to run on propane or gasoline
    • Protects your investment by automatically shutting the generator off when it senses that the oil is low
    • 12,000 starting watts and 9, 500 running watts, This unit can handle heavy loads from lights and a refrigerator to a home air conditioner and high amperage power tools.
    • Get the maximum power from each of the 120 volt receptacle. Choose between operating the generator at both 120 V and 240 V Simultaneously, or at 120 only with full power.

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Model: DuroMax XP12000EH Generator-12000 Watt Gas or Propane Powered Home Back Up & RV Ready, 50 State Approved Dual Fuel Electric Start Portable Generator, Black and Blue

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08/27/25Amazon$671
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08/27/25Amazon$671 popular
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04/10/25Amazon$869
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01/01/23Amazon$809
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11/25/22Amazon$809
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10/11/22Amazon$699
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07/12/22Amazon$879
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04/14/22Amazon$879 frontpage
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Sort: Lowest to Highest | Last Updated 8/27/2025, 01:19 PM
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11 Comments

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Nov 15, 2022 06:52 PM
1,005 Posts
Joined Nov 2017
spittlbmNov 15, 2022 06:52 PM
1,005 Posts
Terrible THD. Run your fancy TVs carefully.
2
Nov 15, 2022 07:13 PM
417 Posts
Joined Jul 2014
doom12Nov 15, 2022 07:13 PM
417 Posts
Quote from spittlbm :
Terrible THD. Run your fancy TVs carefully.
Really? Their FAQ states: "DuroMax portable generators will output an industry standard total harmonic distortion (THD) rating of about 12%-20% depending on load applied. They will produce a sine wave, not a modified or square wave. This is perfectly acceptable for running common commodities found in your home such as TVs, computers, your appliances, etc."
1
Nov 15, 2022 07:29 PM
65 Posts
Joined Oct 2015
sugarbellyNov 15, 2022 07:29 PM
65 Posts
Quote from spittlbm :
Terrible THD. Run your fancy TVs carefully.
Is there a way to filter out or stabilize the distortion factor?
(I know nothing about THD.)
Nov 15, 2022 08:00 PM
1,381 Posts
Joined Sep 2012
DimitrisNov 15, 2022 08:00 PM
1,381 Posts
Quote from sugarbelly :
Is there a way to filter out or stabilize the distortion factor?
(I know nothing about THD.)
AC voltage stabilizers are always an option
Nov 15, 2022 08:17 PM
1,005 Posts
Joined Nov 2017
spittlbmNov 15, 2022 08:17 PM
1,005 Posts
Quote from doom12 :
Really? Their FAQ states: "DuroMax portable generators will output an industry standard total harmonic distortion (THD) rating of about 12%-20% depending on load applied. They will produce a sine wave, not a modified or square wave. This is perfectly acceptable for running common commodities found in your home such as TVs, computers, your appliances, etc."
Compare that to the smaller WEN inverter posted yesterday with a THD of 0.5%. This is 24-40x dirtier. This thing is cheap for a reason. 5-6% should be the goal for running electronics you care about. Tools, fridge, etc aren't going to matter and this is great for that.
1
Nov 15, 2022 08:19 PM
1,005 Posts
Joined Nov 2017
spittlbmNov 15, 2022 08:19 PM
1,005 Posts
Quote from Dimitris :
AC voltage stabilizers are always an option
Such as the APC Line-R.
Nov 15, 2022 08:58 PM
417 Posts
Joined Jul 2014
doom12Nov 15, 2022 08:58 PM
417 Posts
Quote from spittlbm :
Compare that to the smaller WEN inverter posted yesterday with a THD of 0.5%. This is 24-40x dirtier. This thing is cheap for a reason. 5-6% should be the goal for running electronics you care about. Tools, fridge, etc aren't going to matter and this is great for that.
Thanks for the insight.

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Nov 16, 2022 12:53 PM
2,902 Posts
Joined Dec 2007
erishunNov 16, 2022 12:53 PM
2,902 Posts
Quote from sugarbelly :
Is there a way to filter out or stabilize the distortion factor?
(I know nothing about THD.)
As an aside, I have had this Duromax generator (same exact model, except mine is 10k instead of 12k) and have run it many times over the years. I have multiple computers, TVs, a home theater with a full 7.1 surround sound system with a receiver and subwoofer as well as plenty of other "fancy" equipment… I've never had a problem. And nobody I've known who have had standard generators have ever had a problem.

The only thing you should be concerned about is not pushing your generator to its absolute maximum. If there's any doubt, size up because "browning out" can cause issues and maybe cause damage (rare, but can happen).

But unless you have grandpa in your home on an iron lung, I really really wouldn't lose any sleep over THD.
Last edited by erishun November 16, 2022 at 04:56 AM.
Nov 16, 2022 01:09 PM
2,902 Posts
Joined Dec 2007
erishunNov 16, 2022 01:09 PM
2,902 Posts
Quote from doom12 :
Thanks for the insight.
THD is a made up stat designed to sell expensive inverter generators. Power fluctuation occurs even on normal line power. If your electronics couldn't handle power fluctuations, they'll already have built in power conditioners or you'd already be experiencing issues with them and you would need a separate power conditioner.

Your electronics will work just fine on a regular generator like this.

With that said, inverters are better in other ways. Mainly noise. This generator is LOUD. Really loud. Assuming you're using it as a home emergency backup, it shouldn't matter because when the power goes out, everyone will just have to deal with it… it's an emergency. But if you're hauling this monster to a worksite or if you're a food truck serving customers, you probably want to avoid this and get an inverter for the sake of everyone's hearing.

So yeah, make sure you get a generator that can easily handle more than your need (you never want to be close to maxing it out, inverter or not). Also remember that 12000 is the peak/starting wattage, actual running watts is lower. And that rating is for gasoline. Propane has lower wattage output.

So as long as you are respectful with the overall load, I wouldn't pay any mind to "DiRtY pOwEr" and your electronics; they'll be just fine. And remember that for household use, this is intended to be an emergency backup generator. You won't be running your home on it 24/7/365. Your TVs, computers and other electronics will be just fine no matter what… but especially if it's only a couple hours, a day or two at most?? A lot of people panicking over nothing for absolutely ZERO reason. laugh out loud
Last edited by erishun November 16, 2022 at 05:14 AM.
1
Pro
Nov 16, 2022 01:13 PM
623 Posts
Joined May 2015
TL88
Pro
Nov 16, 2022 01:13 PM
623 Posts
Easy to say when it's not your stuff.

Lost my fridge to one of these. It happens.
Nov 20, 2022 02:13 AM
164 Posts
Joined Aug 2011
slow3vNov 20, 2022 02:13 AM
164 Posts
Quote from TL88 :
Easy to say when it's not your stuff.

Lost my fridge to one of these. It happens.
LG or Samsung?

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