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frontpageearthdogmonster posted Yesterday 11:41 AM
frontpageearthdogmonster posted Yesterday 11:41 AM

Costco Members: Firman 2900W / 3200W Peak Electric Start Dual Fuel Inverter Generator

+ Free Shipping

$300

$600

50% off
Costco Wholesale
98 Comments 18,471 Views
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Deal Details
Costco Wholesale has for Members: Firman 2900W Running / 3200W Peak Electric Start Dual Fuel Powered Inverter Generator (WH02942F) for $299.99. Shipping is free.

Thanks to community member Cwhomer for finding this deal.
  • Note: Please see the original post for additional deals & give the WIKI and additional forum comments a read for helpful discussion.
Product Details:
  • The Firman WH02942 is a portable, RV-ready generator designed for quiet, efficient power on the go. With 3,200 starting watts and 2,900 running watts on gasoline, or 2,900 starting watts and 2,600 running watts on propane, it gives you flexibility and reliability in any situation.
  • 171 cc dual fuel engine with low oil shut off and cast iron sleeve
  • 1.8 gallon tank provides 9 hours of runtime. Propane tank not included
  • RV ready multi feature control panel with covered outlets
  • 5.5" Heavy Duty Never-Flat wheels and High Leverage U-shape Folding Handle
  • Largest tank in industry with extended run-time (less re-fueling).
  • Quiet muffler (Whisper Series) with USDA FS certified spark arrester.
  • 3-in-1 Data-Minder monitors running hours, voltage and frequency in conjunction.
  • Bonus accessories including engine oil, oil funnel, tool kit, battery float charger, LPG regulator/hose and battery charge cable.
  • Included battery for your convenience.
  • Limited lifetime warranty.

Editor's Notes

Written by RevOne | Staff
  • Offer valid from 12/7/25 through 12/13/25, while supplies last.
  • If you don't have a Costco Warehouse Membership, you can sign-up here.
  • Our research indicates that this deal is $150 less (33% savings) than the next best available price from a reputable merchant with prices starting from $449.99 for Certified Refurbished units at the time of this posting.

Original Post

Written by earthdogmonster
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for Members: Firman 2900W Running / 3200W Peak Electric Start Dual Fuel Powered Inverter Generator (WH02942F) for $299.99. Shipping is free.

Thanks to community member Cwhomer for finding this deal.
  • Note: Please see the original post for additional deals & give the WIKI and additional forum comments a read for helpful discussion.
Product Details:
  • The Firman WH02942 is a portable, RV-ready generator designed for quiet, efficient power on the go. With 3,200 starting watts and 2,900 running watts on gasoline, or 2,900 starting watts and 2,600 running watts on propane, it gives you flexibility and reliability in any situation.
  • 171 cc dual fuel engine with low oil shut off and cast iron sleeve
  • 1.8 gallon tank provides 9 hours of runtime. Propane tank not included
  • RV ready multi feature control panel with covered outlets
  • 5.5" Heavy Duty Never-Flat wheels and High Leverage U-shape Folding Handle
  • Largest tank in industry with extended run-time (less re-fueling).
  • Quiet muffler (Whisper Series) with USDA FS certified spark arrester.
  • 3-in-1 Data-Minder monitors running hours, voltage and frequency in conjunction.
  • Bonus accessories including engine oil, oil funnel, tool kit, battery float charger, LPG regulator/hose and battery charge cable.
  • Included battery for your convenience.
  • Limited lifetime warranty.

Editor's Notes

Written by RevOne | Staff
  • Offer valid from 12/7/25 through 12/13/25, while supplies last.
  • If you don't have a Costco Warehouse Membership, you can sign-up here.
  • Our research indicates that this deal is $150 less (33% savings) than the next best available price from a reputable merchant with prices starting from $449.99 for Certified Refurbished units at the time of this posting.

Original Post

Written by earthdogmonster

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Top Comments

whodiini
1649 Posts
379 Reputation
I have owned this for several years. The positive is that it is extremely reliable and works well. The negative is that it is tricky to start, so it took me some time to figure out the subtleties of starting. I suspect the negative reviews all have to do with people who havent spent the time to understand this part. For those people, I would recommend a battery supply. I use propane because it runs cleaner. I dont use it except for extended power failures.

So here are the subtleties in starting it. First the battery dies if connected up and unused for a while. You need to connect it up to test it at the beginning and it requires you to open the front panel. So what I did was to remove the battery and replace the leads with RV type leads. Then make a connector with RV type leads to the spade leads of a battery, which I keep charged by using it in a UPS. You absolutely need a live battery to start with propane because the valve on the propane gas connection is electrically powered, which you need to plug into the front panel once the battery is connected. Second, the manual pull start only works with gas and not propane WITH A DEAD BATTERY, so there is no other option if you want to run with propane and your battery is dead. As a poster pointed out, pull start works if your battery is not dead, but electric start also works if your battery is not dead. Once I did that, it starts like a champ whenever I need it. BTW, removing the battery and replacing it is a pain, which is why I used the external connection - dont need to remove the front panel to connect and disconnect the battery between uses.

My extended backup plan for now is a battery backup to run a refrigerator and microwave, network and computer, plus TV and a few lights for several hours. Then if it goes beyond that, use the generator to recharge the battery backups, since that only takes an hour to recharge then.. In the future, I may just get a transfer switch for a few circuits in the house and the heater. My current strategy works fine in the summer and around a day in the winter. After a day in winter, it starts getting pretty chilly at night, which is why a transfer switch is in the future.
jeba9999
2090 Posts
498 Reputation
Repost..... Sort the reviews on Costco website by date.... The reviews are not promising
lastusername
721 Posts
99 Reputation
Crazy good deal right here

97 Comments

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Yesterday 12:55 PM
37 Posts
Joined Jun 2020
FabulousSparrow5215Yesterday 12:55 PM
37 Posts
$300 manufacturer's savings is valid 12/07/25 through 12/13/25. While supplies last. Limit 5 per member. Shipping & Handling Included*

The FIRMAN WH02942 Inverter generator runs on either gas or liquid propane (LP) and can top out at 3200 starting watts and 2900 running watts. Power is supplied by our Max Pro Series 171cc FIRMAN engine which runs cool and efficient. Our Whisper Series muffler keeps the WH02942 running quiet –below the standards set by the National Parks Service, and our spark arrester has been approved by the USDA Forest Service. The 1.8-gallon fuel capacity provides 9 hours of run time. Starting is as simple as the push of the button with the reliability of our first-pull recoil system.

3 Year Warranty + Costco (Can't really go wrong.)

https://www.costco.com/p/-/firman...94b42d8c-0
Last edited by spoor100 December 7, 2025 at 09:17 AM.
Yesterday 12:58 PM
2,090 Posts
Joined Oct 2008
jeba9999Yesterday 12:58 PM
2,090 Posts

Our community has rated this post as helpful. If you agree, why not thank jeba9999

Repost..... Sort the reviews on Costco website by date.... The reviews are not promising
1
Yesterday 02:06 PM
721 Posts
Joined Oct 2007
lastusernameYesterday 02:06 PM
721 Posts
Crazy good deal right here
1
Yesterday 02:10 PM
951 Posts
Joined Jan 2007
TruongKyYesterday 02:10 PM
951 Posts
is it low noise?
Yesterday 02:16 PM
4 Posts
Joined May 2010
pthomas11Yesterday 02:16 PM
4 Posts
Does anyone have this? Was going to bite but recent reviews make it seem like they are 3-4 year old units with reliability issues.
Yesterday 02:16 PM
127 Posts
Joined Jul 2019
SmoothslYesterday 02:16 PM
127 Posts
Quote from jeba9999 :
Repost..... Sort the reviews on Costco website by date.... The reviews are not promising
Thanks, thought Firman was a solid product at one time. Guess not.. Will avoid.
Yesterday 02:17 PM
1,203 Posts
Joined Dec 2008
The_WhalerYesterday 02:17 PM
1,203 Posts
Quote from TruongKy :
is it low noise?
Yes, this is a inverter generator which is generally quieter than non-inverter generators. Noise level of 57db.

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Yesterday 02:23 PM
233 Posts
Joined Aug 2006

This comment has been rated as unhelpful by Slickdeals users.

Yesterday 02:27 PM
984 Posts
Joined Sep 2004
tgifYesterday 02:27 PM
984 Posts
FYI: in addition to Costco's lifetime satisfaction guarantee, and the stated three year warranty, in the description, there's this:
"Finally, we back what we build with our legendary limited lifetime warranty."
Yesterday 02:29 PM
12 Posts
Joined Sep 2024
GreedyDealGuyYesterday 02:29 PM
12 Posts
Quote from fongch :
What's the intended use of this?
Power!!
1
Yesterday 02:30 PM
12 Posts
Joined Sep 2024
GreedyDealGuyYesterday 02:30 PM
12 Posts

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

Lifetime warranty on a generator is amazing by itself
3
Yesterday 02:31 PM
3,481 Posts
Joined Dec 2008
Spider210Yesterday 02:31 PM
3,481 Posts
Great deal if you have a membership
Yesterday 02:36 PM
84 Posts
Joined Nov 2017
Cpshell1Yesterday 02:36 PM
84 Posts
Damn, this is a great deal and would be an awesome power backup should my trailer batteries need a top off while boondocking. Unfortunately, it' about 2 inches too high to fit in my trailer pass thru. The search continues.
2
Yesterday 02:39 PM
43 Posts
Joined Oct 2021
GreyBook838Yesterday 02:39 PM
43 Posts
Good deal

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Yesterday 02:41 PM
1,125 Posts
Joined Oct 2005
DadMaster5kYesterday 02:41 PM
1,125 Posts

Our community has rated this post as helpful. If you agree, why not thank DadMaster5k

Most recently reviews are concerning. Most says these are NOS (2021 build date) and dead batteries which is not the worst, but oil leaks makes me want to continue my search.
2

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