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Posted on 7/20/22 at 8:38 pm to Propane_Tiger
quote:Why is that? My 22 generac performed flawlessly for 7 days after Ida without any load management (2 central AC units)
Never go with 22/24KW Generac.
Posted on 7/20/22 at 9:27 pm to 385 Tiger
Of the two, all things being equal, Kohler is a better engine.
If possible, go with low rpm model
If possible, go with low rpm model
Posted on 7/20/22 at 9:45 pm to SlidellCajun
That's my plan. One of the reason I'm not looking at the 36 is due to wanting the lower rpm models.
Posted on 7/20/22 at 10:10 pm to Finnish
I hear you. But I'm looking at liquid cooled units with low fan speeds, so my options are the 32, 38, or 40kw. And I find it very surprising that you only pull 8000 watts. I've got 8 or 8.5 tons of AC, a number of fridges, a dryer, etc. If I need to pay what it costs to get into the liquid cooled world, a few dollars more will avoid load management issues. I"m willing to pay a bit more for convenience.
Posted on 7/21/22 at 6:02 am to 385 Tiger
1800rpm models are generally more heavy duty and will last longer, but at some point you get way into diminishing returns on these things. Do you really want to spend $20k+ on something that will average a couple days use a year? The higher speed units will handle that just fine.
Posted on 7/21/22 at 6:15 am to 385 Tiger
quote:
But I'm looking at liquid cooled units with low fan speeds, so my options are the 32, 38, or 40kw. And I find it very surprising that you only pull 8000 watts. I've got 8 or 8.5 tons of AC, a number of fridges, a dryer, etc
I put everything into a spreadsheet, including startup current to size mine. Then to verify, turned everything on and put an amp meter on the power feed legs coming into the house. That was 8,000W which left enough spare capacity for AC start up etc.
But to avoid bog downs or having to load manage in case both ACs started at the same exact time, I put soft starts on the ACs. When I put everything into a sheet, my max load was around 20kW (literally everything on in the house and stuff with compressors trying to start at the same time), but rather than resign for the peak and run at low load, I flattened the peak with soft starts to try and keep the generator operating at 40-60% capacity.
You have more AC tonnage and electric dryer probably pulls around 6,000w. So you’d need bigger than me. But I would try to truly understand the sizing you need if for nothing else to understand what capacity it will typically run at. If you significantly oversize, you’ll burn a lot of wasted NG.
Posted on 7/21/22 at 8:16 am to Finnish
Thanks. That's a good idea, and I appreciate the thoughtful response.
Posted on 7/21/22 at 11:15 am to TigerTatorTots
quote:
Why is that? My 22 generac performed flawlessly for 7 days after Ida without any load management (2 central AC units)
After the last hurricane that hit Lake Charles LA there was a generator thread on here with posts mostly from those in that area running on generators. It went on for several weeks, and there was a lot of negative posts concerning the common Generac air cooled models. Most of the issues were related to over heating during the extended outage. I don’t have a opinion, just stating where some others my have gotten their information.
Posted on 7/21/22 at 12:10 pm to EA6B
quote:I'd be willing to bet a large sum the vast majority of those issues were due to homeowners now caring for it, not letting it rest daily for a period of time, not checking/changing oil. People get these systems and think it is a set it and forget it approach.
Most of the issues were related to over heating during the extended outage
Posted on 7/21/22 at 12:36 pm to TigerTatorTots
quote:
I'd be willing to bet a large sum the vast majority of those issues were due to homeowners now caring for it, not letting it rest daily for a period of time, not checking/changing oil. People get these systems and think it is a set it and forget it approach.
Agreed. It is designed for standby use only so must be babied a bit if running for days straight.
If anyone here is in the aforementioned group I’d like to hear some feedback so I can prep for the hurricane season. My Honeywell (Generac) runs great and I have backup supplies ready but want to make sure I’m checking all the boxes.
Posted on 7/21/22 at 6:18 pm to TigerTatorTots
quote:
I'd be willing to bet a large sum the vast majority of those issues were due to homeowners now caring for it, not letting it rest daily for a period of time, not checking/changing oil. People get these systems and think it is a set it and forget it approach.
A lot of people bought the Generac units thinking it would handle continuous duty service, or maybe they were told it would. In some cases I can see their point, if you are running a 22kw unit at 50-60% load even in the middle of summer and it is overheating there is a cooling problem.
Posted on 7/21/22 at 6:19 pm to TigerTatorTots
quote:
letting it rest daily for a period of time
I dont understand what good this is supposed to do. Reduced load sure, but shut down?
Posted on 7/21/22 at 7:06 pm to 385 Tiger
I have a 17 year old 17.5kw generac. Works flawlessly every time. All brands require periodic maintenance. All brands will require repair at some time or another. Its just like cars and trucks. Everybody will have positive and/or negative experiences with any brand.
Posted on 7/22/22 at 6:29 pm to DownshiftAndFloorIt
quote:That is what everyone on this board was saying do during Ida as well as the booklet from the company that installed the unit for me. Not sure what it does but everyone I know that did it didn't have any issues with theirs
I dont understand what good this is supposed to do. Reduced load sure, but shut down?
Posted on 7/24/22 at 12:39 pm to 385 Tiger
treat it right and it shouldn't matter which generator set you get
Posted on 7/25/22 at 10:33 am to DVinBR
quote:
treat it right and it shouldn't matter which generator set you get
It matters that you understand the capabilities of what you are buying and that it will meet your requirements. People bought Generac air cooled generators and though they were designed for 24/7 continuous operation in the heat of summer. These people had overheating issues during the extended outages. There are other air cooled generators with cooling systems that are designed for this type of continuous operation without shutting down for anything other than oil changes.
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