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Firrman 7500W Running / 9400W Peak Tri Fuel Generator (Refurbished) EXPIRED

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FirmanPowerEquipment via eBay has Firrman 7500W Running / 9400W Peak Tri Fuel Generator (Refurbished, T07571) on sale for $549.99. Shipping is free.

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About Refurbished Condition:
  • "This product has been Refurbished to exacting specifications by FIRMAN technicians. Certified to work as new. May have cosmetic blemishes. Refurbished generators have limited use and the hour meter has been reset to easily allow user to track future maintenance intervals."

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  • Warranty: Includes 2-Year Allstate Comprehensive Warranty which covers
    • Coverage for product breakdowns and malfunctions
    • 100% parts and labor coverage with no deductibles
    • Online claims 24/7
    • Fast repairs or replacement
  • Return Policy: Eligible for returns within 30-Days. Buyer pays for return shipping
  • Refer to forum thread for discussion from the community regarding this offer and product. -slickdewmaster

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Edited August 10, 2022 at 09:21 AM by
firmanpowerequipment via eBay Daily Deals [ebay.com] has Firrman T07571 - 7500W Running / 9400W Peak Tri Fuel Generator (Refurbished) for $549.99. Shipping is Free

Note: Includes a 2 year Allstate Warranty
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Looking at the Firman's website they have 'black' versions that are spec'ed from them at 25% and their apparent intended purpose is "Home Projects" and "Work", this one is a 'blue' that is additionally rated for "Power Outage" and a lower THD.

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#3
I thought I remembered these getting crapped on a lot for a really high THD (25%+) but Firmans website seems to indicate its 11-14% at full load which doesn't seem to bad.
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#4
Quote from BlueHaddock4722 :
I thought I remembered these getting crapped on a lot for a really high THD (25%+) but Firmans website seems to indicate its 11-14% at full load which doesn't seem to bad.
Doesn't make sense. If firman says it not 25%, then how did people get 25%?
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#5
Quote from creepster :
Doesn't make sense. If firman says it not 25%, then how did people get 25%?
Either firman changed the specs or independent testing showed a higher THD because if you look at this same generator from last October (went front page) it's one of the sticky comments.
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#6
Quote from creepster :
Doesn't make sense. If firman says it not 25%, then how did people get 25%?
Looking at the Firman's website they have 'black' versions that are spec'ed from them at 25% and their apparent intended purpose is "Home Projects" and "Work", this one is a 'blue' that is additionally rated for "Power Outage" and a lower THD.
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#7
Quote from creepster :
Doesn't make sense. If firman says it not 25%, then how did people get 25%?
I don't own the generator but did a bunch of research on it. I emailed Firman about the generator and they confirmed THD is 11-14.

The best I could figure out is that there was another model that had a 25% THD. Then on Costco's website, a review stated that this model had a THD of 25%. That review was pinned on top for being helpful, and from there the claim the generator had a 25% THD was proliferated here on Slickdeals and other places. I'm not 100% sure that's how it happened, but I was curious as well on how something so bizarre was widely proliferated.
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#8
Quote from ps1589 :
I don't own the generator but did a bunch of research on it. I emailed Firman about the generator and they confirmed THD is 11-14.

The best I could figure out is that there was another model that had a 25% THD. Then on Costco's website, a review stated that this model had a THD of 25%. That review was pinned on top for being helpful, and from there the claim the generator had a 25% THD was proliferated here on Slickdeals and other places. I'm not 100% sure that's how it happened, but I was curious as well on how something so bizarre was widely proliferated.
Realistically it doesn't matter, 5% is the threshold that most manufacturers care about. For example, Lennox states in the owners manual for my variable speed furnace that the power must be 5% THD or less, else the warranty is void.

Many UPS backups also will refuse "dirty" power. All depends on ones use case of course but ive got a house full of UPS devices and a furnace that wont play well with dirty power so bought an inverter style generator.
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#9
Quote from ps1589 :
I don't own the generator but did a bunch of research on it. I emailed Firman about the generator and they confirmed THD is 11-14.

The best I could figure out is that there was another model that had a 25% THD. Then on Costco's website, a review stated that this model had a THD of 25%. That review was pinned on top for being helpful, and from there the claim the generator had a 25% THD was proliferated here on Slickdeals and other places. I'm not 100% sure that's how it happened, but I was curious as well on how something so bizarre was widely proliferated.
I bought this same exact model via Costco in store for $699, sale. The new version (gray) is at costco now, and it recently was on sale for $699 as well. So my guess is this goes on sale 2-3 times a year at costco. It comes with a cover and some peripherals at costco.
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#10
Great generator. It was our third try on a 7500 W unit.
First two didn't power central heat/air.
The first start was tough. Had to call Firman for tech support. They were great, small truck with the choke for the first start. No issues since.
$699 was great price, no brained at $550 with 2 yr warranty.
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#11
Has anyone had any experience with a natural gas hookup with this unit? I know it yields less power and requires a plumber for the gas line (and an electrician if you want to install a transfer switch) but is it worth the trouble?
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#12
Quote from flashdrive :
Has anyone had any experience with a natural gas hookup with this unit? I know it yields less power and requires a plumber for the gas line (and an electrician if you want to install a transfer switch) but is it worth the trouble?
I did exactly that with this generator. Yes. It's worth it. If you need to run your generator for 48 hours, you will appreciate it. Fuel goes bad and will gunk up the generator so no. LP while a great option, will get only 5-6 hours a 20 gal tank. You do loose quite a bit of power on NG so take this into account. I did measure the wattage output and it is to spec.

I made the connection myself. Use black iron pipe and fittings (Not galvanized) if you can. There is special Teflon tape for gas as well. I split the input to my water heater. I ordered a quick connect hose from Amazon as HD didn't have a decent length.
Optimally, make this connection with a tap, and outside the house if you can. But again, this is for emergency use.

Consider this as an emergency power backup generator. The TDH, as others have mentioned, is pretty bad. All my lights flicker, microwave sounds terrible. I didn't dare turn on the TV. But anything with a power brick seemed to work fine like the fiber internet and laptops. Kept the fridge running. Managed to run an AC unit as well.
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#13
Quote from ronder :
I did exactly that with this generator. Yes. It's worth it. If you need to run your generator for 48 hours, you will appreciate it. Fuel goes bad and will gunk up the generator so no. LP while a great option, will get only 5-6 hours a 20 gal tank. You do loose quite a bit of power on NG so take this into account. I did measure the wattage output and it is to spec.

I made the connection myself. Use black iron pipe and fittings (Not galvanized) if you can. There is special Teflon tape for gas as well. I split the input to my water heater. I ordered a quick connect hose from Amazon as HD didn't have a decent length.
Optimally, make this connection with a tap, and outside the house if you can. But again, this is for emergency use.

Consider this as an emergency power backup generator. The TDH, as others have mentioned, is pretty bad. All my lights flicker, microwave sounds terrible. I didn't dare turn on the TV. But anything with a power brick seemed to work fine like the fiber internet and laptops. Kept the fridge running. Managed to run an AC unit as well.
Thanks for your feedback. I'm not as much of DIY guy as you are so I will definitely be calling a plumber. In the past, I have managed to power my fridge, microwave oven, and a small A/C (only two at a time) for several days using a gasoline generator but that was only because I was able to buy gasoline from neighboring areas that still had functioning gas stations. I wouldn't be able to do that if there was a widespread blackout so I'm looking towards a natural gas solution that doesn't involve the full expense of an installed generator (ex. Generac). Your comments have been very helpful.
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#14
Quote from watkins :
Great generator. It was our third try on a 7500 W unit.
First two didn't power central heat/air.
The first start was tough. Had to call Firman for tech support. They were great, small truck with the choke for the first start. No issues since.
$699 was great price, no brained at $550 with 2 yr warranty.
Pretty sure you meant a small "trick", but what was the small trick? We are in suspense.
Someone else mentions they think it was to turn off the choke immediately after startup. Anyone else chime in to confirm what this "trick" is?
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Last edited by c2nah777 August 11, 2022 at 09:29 AM.
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#15
Quote from watkins :
Great generator. It was our third try on a 7500 W unit.
First two didn't power central heat/air.
The first start was tough. Had to call Firman for tech support. They were great, small truck with the choke for the first start. No issues since.
$699 was great price, no brained at $550 with 2 yr warranty.
Yep. I think you need to flick the choke off right after you release the starter button. It took me a while to get the hang of it.
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