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expiredMeowssi | Staff posted Apr 07, 2025 04:48 PM
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expiredMeowssi | Staff posted Apr 07, 2025 04:48 PM

Refurbished: 7500W Firman Tri Fuel 120/240V Electric Start Portable Generator

+ Free Shipping

$480

$700

31% off
eBay
64 Comments 25,240 Views
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Update: This popular deal is still available

FIRMAN Power Equipment via eBay has Refurbished: 7500W Firman Tri Fuel 120/240V Electric Start Portable Generator (T07571F) on sale for $599.99 - 20% off when you apply promo code OUTLET20 at checkout = $479.99. Shipping is free.

Thanks to Deal Hunter Meowssi finding this deal.

Features:
  • 439cc tri fuel engine
  • Recoil start
  • Electric start
  • Low oil shut off
  • Cast iron sleeve
  • Running watts 7500W (GAS), 6750W (LPG), 5500W (NG)
  • Starting watts 9400W (GAS), 8450W (LPG). 6900W (NG)
  • 120/240 volts
  • 8-gallon tank
  • Up to 12 hours of run time at 25% load
  • [/COLOR]

Editor's Notes

Written by megakimcheelove | Staff
  • About this deal:
  • About this product:
    • Two-year warranty included

Original Post

Written by Meowssi | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available

FIRMAN Power Equipment via eBay has Refurbished: 7500W Firman Tri Fuel 120/240V Electric Start Portable Generator (T07571F) on sale for $599.99 - 20% off when you apply promo code OUTLET20 at checkout = $479.99. Shipping is free.

Thanks to Deal Hunter Meowssi finding this deal.

Features:
  • 439cc tri fuel engine
  • Recoil start
  • Electric start
  • Low oil shut off
  • Cast iron sleeve
  • Running watts 7500W (GAS), 6750W (LPG), 5500W (NG)
  • Starting watts 9400W (GAS), 8450W (LPG). 6900W (NG)
  • 120/240 volts
  • 8-gallon tank
  • Up to 12 hours of run time at 25% load
  • [/COLOR]

Editor's Notes

Written by megakimcheelove | Staff
  • About this deal:
  • About this product:
    • Two-year warranty included

Original Post

Written by Meowssi | Staff

Community Voting

Deal Score
+38
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Top Comments

dvjunk
166 Posts
74 Reputation
These non-inverter generators use a rotating machine to create the sine wave power, so it is a true sine wave output. However, since it is driven by a combustion motor the frequency can vary. My Westinghouse of the same size runs everything I need... battery backups, router, computers, central AC, furnace, fridge, TV etc. The only issue I had is that the frequency was set to around 63 hz and my battery backup complained. I used a screwdriver and adjusted the frequency (using the built-in display) til it was centered on 60hz and then the battery backup was happy. Occasionally the frequency would vary when a heavy load came on or off and the battery backup would momentarily beep, but would quickly recover and keep everything running. I recommend running your electronics on a battery backup anyway, and in this case it smooths out any issues with generator variation.
Mentor
53 Posts
19 Reputation
I purchased two of these from Costco in 2022 and installed one at my home and one at my sons. Other than routinely starting to keep the battery charged. Then Hurricane Helene came last September. They both ran for 8 days straight without a hitch. We both have natural gas service. We used extension cords to run whatever we needed. I won't go on record stating that it won't affect sensitive electronics, but it was fine for refrigerators, washing machine, microwave, etc.
At this price, I would take a chance, especially if you are blessed to have natural gas.

64 Comments

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Apr 07, 2025 05:01 PM
846 Posts
Joined Oct 2020
multiuseemailApr 07, 2025 05:01 PM
846 Posts
This seems to be a non-inverter generator? Does anyone have any issues running "modern appliances/electronics" (frige/tv/modem/router/switch/ps5/window AC) on these non-inverter generators?
1
Apr 07, 2025 05:40 PM
32 Posts
Joined Jan 2012
jbmeisterApr 07, 2025 05:40 PM
32 Posts
I have this generator, and it is very convenient to be able to use it with natural gas or propane. I have never used it with gasoline because I didn't want to worry about gas gumming up the carburetor or having to empty the old gas out.

We haven't had to use it much, but it was nice to have when we did lose power.

Also, I think the current price at Costco is higher, $699 was a sale price.
Apr 07, 2025 05:56 PM
846 Posts
Joined Oct 2020
multiuseemailApr 07, 2025 05:56 PM
846 Posts
Quote from jbmeister :
We haven't had to use it much, but it was nice to have when we did lose power.
What equipment did you power using this model? Any issues with the 'dirty' power?
1
Apr 07, 2025 05:57 PM
196 Posts
Joined Mar 2007
digituApr 07, 2025 05:57 PM
196 Posts
2-year warranty with free shipping and returns.
Apr 07, 2025 06:46 PM
166 Posts
Joined Dec 2009
dvjunkApr 07, 2025 06:46 PM
166 Posts

Our community has rated this post as helpful. If you agree, why not thank dvjunk

Quote from multiuseemail :
This seems to be a non-inverter generator? Does anyone have any issues running "modern appliances/electronics" (frige/tv/modem/router/switch/ps5/window AC) on these non-inverter generators?
These non-inverter generators use a rotating machine to create the sine wave power, so it is a true sine wave output. However, since it is driven by a combustion motor the frequency can vary. My Westinghouse of the same size runs everything I need... battery backups, router, computers, central AC, furnace, fridge, TV etc. The only issue I had is that the frequency was set to around 63 hz and my battery backup complained. I used a screwdriver and adjusted the frequency (using the built-in display) til it was centered on 60hz and then the battery backup was happy. Occasionally the frequency would vary when a heavy load came on or off and the battery backup would momentarily beep, but would quickly recover and keep everything running. I recommend running your electronics on a battery backup anyway, and in this case it smooths out any issues with generator variation.
3
Apr 07, 2025 06:48 PM
51 Posts
Joined Oct 2007
FergyAApr 07, 2025 06:48 PM
51 Posts
Quote from digitu :
2-year warranty with free shipping and returns.
Note the manufacturer warranty is only 90 days, but ebay seems to be extending a 2 year Allstate warranty on top.
Apr 07, 2025 07:05 PM
1,147 Posts
Joined Feb 2015
beakeru2Apr 07, 2025 07:05 PM
1,147 Posts
Quote from multiuseemail :
This seems to be a non-inverter generator? Does anyone have any issues running "modern appliances/electronics" (frige/tv/modem/router/switch/ps5/window AC) on these non-inverter generators?
You will get a much older generation that will swear these are the devil to electronics... You will get a younger generation that believed everything their gram pappy said and they will preach that these are the devil as well.... The truth is , now in 2025 almost all common electronics (tv's , computers, etc etc) are intelligent enough to adjust for slight variables in voltage drop. The city's power literally fluctuates as well.. That being said, it is always wise to use common sense when turning ON all supplemental power (generator and inverter alike). Shut everything down first.. Fire up the generator and then turn on equipment in sequence.
1
2

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Apr 07, 2025 07:36 PM
53 Posts
Joined Dec 2007
MentorApr 07, 2025 07:36 PM
53 Posts
I purchased two of these from Costco in 2022 and installed one at my home and one at my sons. Other than routinely starting to keep the battery charged. Then Hurricane Helene came last September. They both ran for 8 days straight without a hitch. We both have natural gas service. We used extension cords to run whatever we needed. I won't go on record stating that it won't affect sensitive electronics, but it was fine for refrigerators, washing machine, microwave, etc.
At this price, I would take a chance, especially if you are blessed to have natural gas.
Apr 07, 2025 08:50 PM
539 Posts
Joined Sep 2017
FullStashMcNashApr 07, 2025 08:50 PM
539 Posts
11%-14% THD at full load, I wouldn't run any sensitive electronics on it
1
2
Apr 07, 2025 09:28 PM
19 Posts
Joined Jul 2010
st83jApr 07, 2025 09:28 PM
19 Posts
Quote from multiuseemail :
This seems to be a non-inverter generator? Does anyone have any issues running "modern appliances/electronics" (frige/tv/modem/router/switch/ps5/window AC) on these non-inverter generators?
Ran three refridgerators and two freezers during a local power event. No issues. Ran for three days with breaks per the manual.
Apr 07, 2025 09:53 PM
427 Posts
Joined Nov 2019
MaroonPocket778Apr 07, 2025 09:53 PM
427 Posts
Quote from dvjunk :
These non-inverter generators use a rotating machine to create the sine wave power, so it is a true sine wave output. However, since it is driven by a combustion motor the frequency can vary. My Westinghouse of the same size runs everything I need... battery backups, router, computers, central AC, furnace, fridge, TV etc. The only issue I had is that the frequency was set to around 63 hz and my battery backup complained. I used a screwdriver and adjusted the frequency (using the built-in display) til it was centered on 60hz and then the battery backup was happy. Occasionally the frequency would vary when a heavy load came on or off and the battery backup would momentarily beep, but would quickly recover and keep everything running. I recommend running your electronics on a battery backup anyway, and in this case it smooths out any issues with generator variation.
It's going to vary. You actually want a no load to be 62 or 62.5 because a load (50-80%) will slow the engine to roughly 60 hz. You do not want to run less than 1000 watts continuous on this thing. For non inverter generators, you actually want to run them with a load. Inverter generators will auto throttle down, these will not....
Apr 07, 2025 11:00 PM
1,709 Posts
Joined Jan 2013
DrSachmoApr 07, 2025 11:00 PM
1,709 Posts
I've been waiting for this to come back. Awesome thank you OP.
Apr 07, 2025 11:11 PM
177 Posts
Joined May 2018
Spikemaul07Apr 07, 2025 11:11 PM
177 Posts
Knowing a few master electricians from multiple generations.. they only agree on 1 thing.. inverter generators produce "cleaner power"... I've personally never known anyone loose a sensitive electronic device to a standard portable generator.. that being said, what's it worth to the individual I guess..? File a claim on homeowner's.. just go out and buy another appliance potentially..? Whole home back-up generators typically produce around 5% THD, which is on the top end of what's recommended.. so I guess that should tell one everything they need to know.. If you're counting on a generator of any variety to keep your lifestyle rocking semi-frequently, probably best to go with one that has a THD on the lower end. Either way, this is as solid of a deal on a generator this size, as you will probably find. Thanks OP
Apr 08, 2025 04:38 AM
574 Posts
Joined Dec 2012
TimO8570Apr 08, 2025 04:38 AM
574 Posts
Quite a deal for a tri-fuel generator. Since most people use them rarely, it's far better to use NG or LP since they won't gunk up the carburetor like stale gas will. An inverter genny is better (mainly because of fuel efficiency) but for most practical uses this one will do just fine and be way less expensive.

The concern with THD/dirty power mostly applies to large AC motors staring up (i.e. air conditioner), particularly when they're a heavy load that lags the generator. That lowers frequency which can delay motor startup when it's pulling surge current...cooking it with the prolonged over-current.

TL;DR this is fine vs inverter but don't run a 5T AC compressor on it.

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Apr 08, 2025 06:44 AM
739 Posts
Joined Jul 2011
mac4lyfeApr 08, 2025 06:44 AM
739 Posts
I have this generator and love it. This is a great price on a tri-fuel. I only run it on propane and NG. It's a must in areas with frequent black outs and weather events like hurricanes. Never had an issue running household appliances or internet cable modem or charging phones and laptops.

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