Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Missed This Deal? Get alerts when similar deals are posted.
expired
Rhaezorblue 3.2K Views
Aug 16, 2022 4:32 PM

Firman 3200W Running / 4000W Peak Dual Fuel Inverter Generator $750

Costco Wholesale
Visit Retailer
Good Deal?
11Comments
Save
Share
Deal Details
$850 $750

https://www.costco.com/.product.2322024.html

Online Price 849.99 $
Less 100.00 $ -
Your Price
749.99$
Shipping & Handling Included*
May be available In-Warehouse at a lower non-delivered price

$100 OFF
$100 manufacturer's savings is valid 8/15/22 through 8/28/22. While supplies last. Terms & Conditions
Features:
Runs on Gasoline or Propane Fuel
Electric & Recoil Start
Noise Level: 57 Decibel
9 Hour Run Time
CO Alert System (Carbon Monoxide Warning and Shutdown)
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
$850 $750

https://www.costco.com/.product.2322024.html

Online Price 849.99 $
Less 100.00 $ -
Your Price
749.99$
Shipping & Handling Included*
May be available In-Warehouse at a lower non-delivered price

$100 OFF
$100 manufacturer's savings is valid 8/15/22 through 8/28/22. While supplies last. Terms & Conditions
Features:
Runs on Gasoline or Propane Fuel
Electric & Recoil Start
Noise Level: 57 Decibel
9 Hour Run Time
CO Alert System (Carbon Monoxide Warning and Shutdown)

Community Voting

Deal Score
+2
Good Deal

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

11 Comments

Sign up for a Slickdeals account to remove this ad.

Original Poster
Aug 16, 2022 4:34 PM
236 Comments
Joined Dec 2011
Rhaezorblue
Original Poster
Aug 16, 2022 4:34 PM
236 Comments
Inverter generators are much quieter than their non-inverter counterparts. 50-60db compared to 90-100db. They also supply "clean" power with low THD, whereas traditional generators have much higher THD, not suitable for sensitive electronics like smart phones, tablets, laptops etc.
Aug 16, 2022 4:55 PM
2.8K Comments
Joined Nov 2018
IndigoWinter2667Aug 16, 2022 4:55 PM
2.8K Comments
Quote from Rhaezorblue View quoted comment :
Inverter generators are much quieter than their non-inverter counterparts. 50-60db compared to 90-100db. They also supply "clean" power with low THD, whereas traditional generators have much higher THD, not suitable for sensitive electronics like smart phones, tablets, laptops etc.
This comes up every time a generator deal comes around, but nobody ever provides any supporting info of actual documented research on THD harming electrical components, only the concept itself.
Also 90-100dB is a bit aggressive, other Firman models are rated at 74dB (like the 7500w running costco sells)
Id run a large inverter gen if they were affordable at the capacity I needed, but thats not the case unfortunately.
2
Original Poster
Aug 16, 2022 5:06 PM
236 Comments
Joined Dec 2011
Rhaezorblue
Original Poster
Aug 16, 2022 5:06 PM
236 Comments
Quote from IndigoWinter2667 View quoted comment :
This comes up every time a generator deal comes around, but nobody ever provides any supporting info of actual documented research on THD harming electrical components, only the concept itself.
Also 90-100dB is a bit aggressive, other Firman models are rated at 74dB (like the 7500w running costco sells)
Id run a large inverter gen if they were affordable at the capacity I needed, but thats not the case unfortunately.
60 seconds of searching will give you info:

Conventional Generator and THD
Due to uneven loads and alternators, these generators have high levels of THD and sometimes reach 25%, which is not safe for electrical equipment. They are not also recommended for sensitive electronics.
https://generatorsmaster.com/what...rator-thd/

If you want to risk it, thats your choice to make. We have way too many devices to risk it.
Aug 16, 2022 5:10 PM
2.8K Comments
Joined Nov 2018
IndigoWinter2667Aug 16, 2022 5:10 PM
2.8K Comments
Quote from Rhaezorblue View quoted comment :
60 seconds of searching will give you info:

Conventional Generator and THD
Due to uneven loads and alternators, these generators have high levels of THD and sometimes reach 25%, which is not safe for electrical equipment. They are not also recommended for sensitive electronics.
https://generatorsmaster.com/what...rator-thd/ [generatorsmaster.com]

If you want to risk it, thats your choice to make. We have way too many devices to risk it.
Again, all that is is a link that described THD and its application, nowhere does it reference anyone testing components for an extended time at specific THD levels.
Its all conceptual with no specific, tested limits.
None of their references in that article have tested components either.
Last edited by IndigoWinter2667 August 16, 2022 at 10:13 AM.
1
Aug 16, 2022 5:16 PM
2.2K Comments
Joined Feb 2008
shojusAug 16, 2022 5:16 PM
2.2K Comments
Quote from IndigoWinter2667 View quoted comment :
This comes up every time a generator deal comes around, but nobody ever provides any supporting info of actual documented research on THD harming electrical components, only the concept itself.
Also 90-100dB is a bit aggressive, other Firman models are rated at 74dB (like the 7500w running costco sells)
Id run a large inverter gen if they were affordable at the capacity I needed, but thats not the case unfortunately.
Even a 5 decibel difference is huge to the ears and anything over 70db can cause hearing damage over a prolonged period of time. If you aren't traveling or live in the city than just buy as big as you can afford, at least that's what I would do.
Aug 16, 2022 5:21 PM
2.2K Comments
Joined Feb 2008
shojusAug 16, 2022 5:21 PM
2.2K Comments
This will probably be $699 in-store, as they usually charge an extra $50 online. I bought mine in March and they were $600 in-store and it's been great so far, although I haven't lost power, just have tested it with different appliances in my home. The huge benefit for me is being able to use propane, as it's easier to store and prices for propane don't typically fluctuate as high like gasoline does.
Aug 16, 2022 7:05 PM
15.4K Comments
Joined Aug 2006
Tourist1292Aug 16, 2022 7:05 PM
15.4K Comments
I got it a few months ago at $600 in store. It works pretty well and it is not too noisy (~58db without load at 23ft). Make sure you break it in properly and use a magnetic oil plug. If you want more information, check out the previous thread below:
https://slickdeals.net/f/15645829-599-firman-3200w-running-4000w-peak-dual-fuel-inverter-generator-starting-3-9-bm-store?v=1&src=SiteSearch

Sign up for a Slickdeals account to remove this ad.

Original Poster
Aug 18, 2022 7:05 PM
236 Comments
Joined Dec 2011
Rhaezorblue
Original Poster
Aug 18, 2022 7:05 PM
236 Comments
Quote from Tourist1292 View quoted comment :
I got it a few months ago at $600 in store. It works pretty well and it is not too noisy (~58db without load at 23ft). Make sure you break it in properly and use a magnetic oil plug. If you want more information, check out the previous thread below:
https://slickdeals.net/f/15645829-599-firman-3200w-running-4000w-peak-dual-fuel-inverter-generator-s...
Did you have to buy a magnetic oil plug separately? Which one did you get?
Aug 18, 2022 7:13 PM
15.4K Comments
Joined Aug 2006
Tourist1292Aug 18, 2022 7:13 PM
15.4K Comments
Quote from Rhaezorblue View quoted comment :
Did you have to buy a magnetic oil plug separately? Which one did you get?
Yes. I posted it in that old thread. Basically, it is the same one for Champion 3400/3500/3100 inverter generator.
https://www.ebay.com/itm/144422402937
There are multiple sellers in US with the same price (with shipping included). Cheaper if you can wait for weeks and order overseas. It is not worth it though as it is only a few dollars cheaper at most.
Aug 18, 2022 7:16 PM
157 Comments
Joined May 2009
speed2Aug 18, 2022 7:16 PM
157 Comments
For noise level, 3db will be different level.
Aug 20, 2022 2:04 AM
5 Comments
Joined Feb 2021
GanarAug 20, 2022 2:04 AM
5 Comments
Its having 220V? I'm asking for Generater switch connection purpose

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!