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Old 02-16-2021, 09:48 AM   #1
Pernell
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Default Best whole house Generator

I am going to buy a 30kw NG generator, which one is the most reliable? I am looking at a Cummins, Kohler and Generac.
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Old 02-16-2021, 09:50 AM   #2
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If I had your money, I'd just get one of each.
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Old 02-16-2021, 09:56 AM   #3
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Quote:
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If I had your money, I'd just get one of each.
Says MR Joslin! You funny.
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Old 02-16-2021, 09:59 AM   #4
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Our Kohler just did a 27 hour run. The generac salesmen told me to go Kohler...........
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Old 02-16-2021, 10:18 AM   #5
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Following... ENTERGY SUCKS


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Old 02-16-2021, 10:20 AM   #6
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Not sure what’s best but I’m going to get a 25kw-30kw Cummins

My FIL has a 50kw generac that’s been trouble free for 5 years
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Old 02-16-2021, 10:24 AM   #7
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Our Kohler just did a 27 hour run. The generac salesmen told me to go Kohler...........
Availability may affect your choice.
Pre artic blast Generac was 4 months wait
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Old 02-16-2021, 10:32 AM   #8
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Buy an 1800 rpm one if you can afford it. The lower rpm should reduce maintenance and last a long time.
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Old 02-16-2021, 10:45 AM   #9
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I thought you'd have one

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Old 02-16-2021, 11:19 AM   #10
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Buy an 1800 rpm one if you can afford it. The lower rpm should reduce maintenance and last a long time.

What does a unit like that run approximately?


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Old 02-16-2021, 03:44 PM   #11
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I thought you'd have one

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I will have one soon!
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Old 02-16-2021, 04:12 PM   #12
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My neighbor just put a Genrac in about a month ago is was about $15K. We went 24hrs without power and house was at 47 and he didn’t miss a minute of heat
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Old 02-16-2021, 05:32 PM   #13
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My wife said I need to get one in the process next week.

I was thinking General natural gas.
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Old 02-16-2021, 05:47 PM   #14
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We have Generac natural gas.

I'll never own another home without one!

Last edited by Mary; 02-16-2021 at 05:51 PM.
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Old 02-16-2021, 06:10 PM   #15
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check the oil in them. The run at a high RPM under a load and will burn a quart of oil a day.
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Old 02-16-2021, 07:46 PM   #16
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I don't have one but have heard good reports on the Kohler. Research what plants and refineries and other must have power places have. I've heard that most of these places have Kohler.
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Old 02-16-2021, 08:36 PM   #17
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FIL’s Generac 150kw bit the dust this evening going in the morning to check it out to see what happened. I’m going with the Cummins for sure now. Lol
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Old 02-16-2021, 08:45 PM   #18
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Quote:
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I don't have one but have heard good reports on the Kohler. Research what plants and refineries and other must have power places have. I've heard that most of these places have Kohler.
All the ones we have at the chemical plant where I work are Cummins. I havenít seen many issues with them over the past 8 years. We run them weekly.
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Old 02-17-2021, 01:50 AM   #19
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Our Kohler just did a 27 hour run. The generac salesmen told me to go Kohler...........
Do you have the contact info for generac salesman? I'd love to pick his brain. Will be bying a generator shortly and would like to ask him some questions.
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Old 02-17-2021, 05:51 AM   #20
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Quote:
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Do you have the contact info for generac salesman? I'd love to pick his brain. Will be bying a generator shortly and would like to ask him some questions.
Well i looked. Used Quality Generator in Conroe in 2015 for the install. A 20K set up cost 13,000.00 back then. Our salesman was a couple of years older than me and must be 70ish today. {retired}

Our Kohler is on day 3. It's wierd how you get used to a 8hp engine running in your back yard.........
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Old 02-17-2021, 09:46 AM   #21
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Default Best whole house Generator

Quote:
Originally Posted by Richard S. View Post
I don't have one but have heard good reports on the Kohler. Research what plants and refineries and other must have power places have. I've heard that most of these places have Kohler.


In the Commercial world Generac and Kohler at bottom of the barrel and Cummins, CAT and MTU are the top dogs. But they certainly bring a premium price.

I have a Generac 22kw at my house but I wish I had done more research and looked more into Cummins/Onan options.


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Old 02-17-2021, 02:56 PM   #22
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Quote:
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In the Commercial world Generac and Kohler at bottom of the barrel and Cummins, CAT and MTU are the top dogs. But they certainly bring a premium price.

I have a Generac 22kw at my house but I wish I had done more research and looked more into Cummins/Onan options.
Whats the reputation of their portable generators? The Onan P9500df is only $1k compared to a harborfreight Predator 9000 that everyone likes at $750.
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Old 02-17-2021, 05:03 PM   #23
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Keep the info coming. I didn't even know about some of these brands.
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Old 02-17-2021, 05:20 PM   #24
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Gotta get a Honda
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Old 02-17-2021, 05:36 PM   #25
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I put a Generac 18kw on our new house 4 years ago. No problems ever until today. Unit shut down because of low oil pressure. I cleaned up oil in cabinet and refilled with oil and cranked up to find leak. It was the oil pressure sensor right above the oil filter. Called local guy that set mine up and got part from him and back in business now. I have no complaints with Generac, anything mechanical can have an issue. Shut itself down like it was supposed to. Running on NG

Last edited by Reel cajun; 02-17-2021 at 05:38 PM. Reason: ***
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Old 02-17-2021, 05:42 PM   #26
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Originally Posted by Reel cajun View Post
I put a Generac 18kw on our new house 4 years ago. No problems ever until today. Unit shut down because of low oil pressure. I cleaned up oil in cabinet and refilled with oil and cranked up to find leak. It was the oil pressure sensor right above the oil filter. Called local guy that set mine up and got part from him and back in business now. I have no complaints with Generac, anything mechanical can have an issue. Shut itself down like it was supposed to. Running on NG

This oil pressure sensor seems to be a common issue if one arises.

I just donít decide which way to go on this.


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Old 02-17-2021, 06:03 PM   #27
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Quote:
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FILís Generac 150kw bit the dust this evening going in the morning to check it out to see what happened. Iím going with the Cummins for sure now. Lol


Good lord is he running a whole neighborhood? 150kW is a beast of a unit.

We use CAT and Cummins in industrial settings but thatís for critical power and they have more robust monitoring options. Like mentioned previously, most do a weekly cycle test and actually send a report out via WiFi directly to the maintenance group. You donít need all that for a house. They are great but def more expensive when the break. We also run liquid cooled units which adds to the price tag.

Iím looking into more reasonable residential units now.
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Old 02-17-2021, 06:39 PM   #28
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Quote:
Originally Posted by SNKETR View Post
Whats the reputation of their portable generators? The Onan P9500df is only $1k compared to a harborfreight Predator 9000 that everyone likes at $750.


Iím going to call my Cummins rep tomorrow and talk to him about them.


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Old 02-17-2021, 06:51 PM   #29
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Quote:
Originally Posted by Wall_Hanger View Post
Good lord is he running a whole neighborhood? 150kW is a beast of a unit.

We use CAT and Cummins in industrial settings but thatís for critical power and they have more robust monitoring options. Like mentioned previously, most do a weekly cycle test and actually send a report out via WiFi directly to the maintenance group. You donít need all that for a house. They are great but def more expensive when the break. We also run liquid cooled units which adds to the price tag.

Iím looking into more reasonable residential units now.
Thw new home Generac models do the weekly start up battery charge and test update.
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Old 02-17-2021, 10:51 PM   #30
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Wish I was a home generator salesman. I'd be able to retire in a year.
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Old 02-18-2021, 07:23 AM   #31
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Kohler for residence no doubt.

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Old 02-18-2021, 07:30 AM   #32
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This isn't real elaborate but I think budget wise of cost vs return this is a good way to go and this video shows how to do it safely and how to get the most available wattage out of your generator. It also allows you to use your generator in other applications by staying mobil.

https://youtu.be/KYBIQlLMImw
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Old 02-18-2021, 07:56 AM   #33
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Quote:
Originally Posted by Reel cajun View Post
I put a Generac 18kw on our new house 4 years ago. No problems ever until today. Unit shut down because of low oil pressure. I cleaned up oil in cabinet and refilled with oil and cranked up to find leak. It was the oil pressure sensor right above the oil filter. Called local guy that set mine up and got part from him and back in business now. I have no complaints with Generac, anything mechanical can have an issue. Shut itself down like it was supposed to. Running on NG
Parts are readily available for the Generac. We just ordered a spare oil pressure sensor to keep just in case. Ordered off of Amazon.
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Old 02-18-2021, 08:04 AM   #34
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Any options for those without natural gas? Propane? Diesel?
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Old 02-18-2021, 10:18 AM   #35
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I was wondering the same on other options. Propane and diesel is what I am interested in. The problem I have with them fuel storage and consumption. Kubota has diesels 10/12Kw that use less than a gallon an hour and propane uses a lot more per hour. Decisions and money.
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