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Factory-Direct
Features

Kohler 12RESV - 12 kW Home Standby Generator
Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. Please review all product specs prior to purchase."
- Kohler Series 7000 V-Twin OHV Engine
- Powerful and reliable engine with hydraulic valve lifters
- Powerful Performance w/ PowerBoost™ Technology
- Greater motor-starting ability for large electrical loads
- Premium Power Quality (+/-1% Voltage Regulation)
- Protects sophisticated electronics with low distortion (<5%THD)
- Fast Response Time (Requires Automatic Transfer Switch)
- Kohler™ generators restore power in as little as 10 seconds
- New Silencer Reduces Sound Levels & Provides Quiet Operation
- Maintains neighborhood solitude - approx 71 dB(A) Max
- RDC2 Controller
- ATS status via LED lights on controller; Built-In 2.5A Battery Charger
- Glare-resistant, 2-line 16-character display - No More Codes
- Real time clock allows you to easily set weekly exercise
- Remote Monitoring System (Included)
- Built-in Ethernet card, no hardware needed
- Requires OnCue Plus Wireless Radio Kit For Wireless Monitoring (Sold Separately)
- KOHLER® Energy Management App
- Get real-time alerts on generator status, remote control & maintenance records
- Bold New E-Coat Dipped Steel Enclosure
- Painted with a durable powder coat finish to minimize corrosion
- Automatic Transfer Switch & Group 51 Battery (Required & Sold Separately)
- ***Not Compatible For Off-Grid Applications***
- Approved for stationary standby applications in locations served by a reliable utility source
- Premium Warranty - 5-year/2,000-Hour Limited Warranty
California residents see
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
For more information go to: www.p65Warnings.ca.gov
Specifications
12RESV-QS8

General Information
Product Category
Generator - Standby
Overview
Product Category
Generator - Standby
Weight
433 Pounds
Made in USA
Yes
Consumer Warranty
5 Years
Commercial Warranty
5 Years
Product Style
Standby Generator
Product Length
30.6 Inches
Product Width
28 Inches
Product Height
32.4 Inches
UPC
650531173843
Additional Model Numbers
12RESV, 12RESV-QS8
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
12000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
11000 Watts
LP Power Capacity
12000 Watts
NG Fuel Consumption @ 50% Load
128 ft³/hr
NG Fuel Consumption @ 100% Load
216 ft³/hr
LP Fuel Consumption @ 50% Load
1.6 gallons/hr
LP Fuel Consumption @ 100% Load
2.9 gallons/hr
Rated Amps
50 Amps
Decibel Rating @ 7m
Decibel Rating @ 7m
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
71
Transfer Switch
Automatic (Not Included)
Battery
Not Included (500 CCA)
Enclosure
Steel
A/C Ton Rating
5-Tons
Mounting Pad
Steel (Included)
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Wi-Fi Remote Monitoring
Sold Separately
Engine
Engine Brand
Kohler
Starting System
12v Auto Start
CC
725 CC
Consumer Engine Warranty
5 Years
Commercial Engine Warranty
5 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Reviews
(19)
Kohler 12RESV-QS8 Reviews & Ratings
Customer Photos and Videos

Customer Rating
3.89
(19 Ratings)
5
(11)

4
(3)

3
(1)

2
(0)

1
(4)

Its All In The Installation Manual
By Joe B
Michigan
Review Posted 06/15/2024
Everything works great from 90 degree days to 0 degree days in the winter. Some reviews on here I question, seems like the installs were not done correctly as if a 15amp circuit was not ran to the generator to keep the battery charged, and Kohlers install is a bit different than Generacs. If you are not highly highly mechanically inclined I would recommend having a Kohler certified dealer install it only or i think steps will be missed, most guys want to get in and out in less than a day it seems. I can say this unit is equal to a 14kw Generac and is better than a 12kw brigs. Has much easier serviceability than a brigs 12kw. If you are tight on space and cant fit a lengthy 14kw Generac then this Kohler 12kw is the one to get. Installed mine with a 150amp ATS switch and it runs my whole house with a 2.5 ton ac unit just fine. When you dig into the specs this 12kw is more like a 14kw Generac, has a V-Twin with high surge capability. So keep that in mind, in a nutshell a Kohler 10-12kw is not a Generac 10-12kw…. The Kohlers are underrated and or Generacs over rated so when calculating what you need it can make things a big confusing at first.
Joe B Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Price, I39d Buy It Again, Easy To Store
Had My Kohler Generator For Seven Years
By Jeanne W
Ohio
Review Posted 01/02/2024
Had my generator for seven years and it has never failed me. I know they're expensive but when the power goes out THEY'RE PRICELESS. We've lost power for several days in the summer and winter.
Jeanne W Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
I'd Buy It Again

Good Experience
By Tim W
Virginia
Purchased 02/13/2023 |
Review Posted 04/10/2023
Received quickly. Installed and running with no problems. Started up on first attempt. There are many steps involved between the genset and ATS - take the time to be fully familiar with installation books and you’ll have no problems.
Tim W Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Price
Cons:
None
Fails To Start
By Ed
Texas
Review Posted 02/16/2023
In service for 1 1/2 years 100 hours use, local electrician and propane company install, unit cranks but will not start and getting Kohler service out to look at it is impossible, I can't even get an appointment out of them, Kohler appears to have a weak service network that is extremely limited and for that reason alone i can't recommend this unit, it is basically a yard ornament now.
Ed Does Not Recommend This
Was this review helpful?
Expert Response
Very sorry to hear you're having issues with your generator. Kohler stands behind their products and offer a Premium Warranty - 5-year/2,000-Hour Limited Warranty. Kohler has a large network of dealers. I'd suggest using the Kohler Dealer Locator to location additional service providers in your area.

Jared G.
eComfort Product Expert
Manufacturer Response
Hi Ed,
I apologize for this experience. Please call 800-544-2444. We will help to find a responsive dealer for you or get a local manager involved to assist you.
Kohler Home Energy
I apologize for this experience. Please call 800-544-2444. We will help to find a responsive dealer for you or get a local manager involved to assist you.
Kohler Home Energy

Rating Breakdown
1/5
1/5
1/5
1/5
Cons:
Unreliable, Service near impossible from Kohler dealer
Very Unsatisfied Customer
By Mriam M.
Pennsylvania
Review Posted 01/04/2023
Worst product I ever bough. This is not my first generator. I burned 3 batteries in 10 days. It burns too much fuel. It is too loud. Spoke to company they were no help. They got my money and that's what they care about. After the last power I lost all my food and bought 3 batteries. The unit gave me power during the 10 days. Don't but one.
Mriam M. Does Not Recommend This
Was this review helpful?
Expert Response
Very sorry you're experiencing issues with your generator. Kohler provides a 5-Year Warranty on this model. For warranty service, please utilize the Kohler Dealer Locator

Jared G.
eComfort Product Expert
Rating Breakdown
1/5
1/5
1/5
1/5

Don't Buy A Kohler Generator
By Anthony
Iowa
Review Posted 11/18/2022
I bought this to install for a customer. I installed it and the gas company came out to run a gas line. There was no LP gas orifice with the generator. I called Kohler and they said they would get back to me. This was over a month ago. Electric Generators Direct said they ordered an orifice over 2 1/2 weeks ago and still no part. My customer is extremely mad and rightfully so. Stay away from Kohler. Their customer support is non existent.
Anthony Does Not Recommend This
Was this review helpful?
Expert Response
First we'd like to apologize that the generator was shipped missing the part. It looks like original order for the part from us was lost. After reviewing the order notes, it looks like the replacement order is scheduled to ship out directly from Kohler today. One again, we apologize for any inconvenience this may have caused you.

Jared G.
eComfort Product Expert
Rating Breakdown
1/5
1/5
1/5
1/5

Ready For Anything
By Liuba B.
Wharton, New Jersey
Purchased 05/10/2021 |
Review Posted 10/23/2021

After 5 months on back order, My electrician & plumber installed the generator in 1 day. It started on first try and successfully performed a test run. It is now scheduled for a maintenance test every week & ready for a power outage.
Switch to generator power is automatic in about 10 seconds-or less.
Price of unit was best from Electric Generators Direct. Their free delivery was
outstanding, with placement of generator where I wanted.
Switch to generator power is automatic in about 10 seconds-or less.
Price of unit was best from Electric Generators Direct. Their free delivery was
outstanding, with placement of generator where I wanted.
Liuba B. Recommends This
Was this review helpful?
Rating Breakdown
5/5
4/5
5/5
5/5
Pros:
Price, Easy To Use, Features, Reliable

DOES NOT WORK
By Drew M.
Colorado Springs, Colorado
Purchased 03/02/2020 |
Review Posted 07/30/2020
Does not run, period. Have had propane gas experts, others who know generators look at it, it WILL NOT START. Cranks fine, the propane gas is there, battery fully charged, switched to propane (not natural gas), but won't start. No way to get customer support since bought on line. Have called company, no help. Do not buy this generator or use this online company to buy one.
Drew M. Does Not Recommend This
Was this review helpful?
Expert Response
Very sorry you're having problems with your generator. Kohler provides a 5-Year Warranty on this model. I would suggest contacting a Kohler service dealer in your area for warranty service. To find a dealer in your area, Kohler can be reached directly @ (800) 544-2444 or Kohler Dealer Locator

Jared G.
eComfort Product Expert
Manufacturer Response
Drew,
I apologize you are having issues with your generator. I apologize we weren't able to help the first time you called. Please give us a call and provide the serial number for the unit and we investigate how to get your issue resolved.
Laurie
Kohler Customer Service
I apologize you are having issues with your generator. I apologize we weren't able to help the first time you called. Please give us a call and provide the serial number for the unit and we investigate how to get your issue resolved.
Laurie
Kohler Customer Service

Rating Breakdown
1/5
1/5
1/5
1/5
Cons:
Difficult To Use, Unreliable, does not work

Kohler 12RESV
By Phil C.
Greenwood, Mississippi
Purchased 09/11/2019 |
Review Posted 10/02/2019
I started ordering Kohler generators for the company I work for about 5 years ago. This new style Kohler is awesome. Less space and I think it is much quieter than traditional models. I would have given it a 5 star quality rating but the case had a few dings and the top was warpped when it arrived. A simple fix but never the less you should not have to repair something MEW. Over all this is a great unit and I will be purchasing one for my cabin in the near future.
Phil C. Recommends This
Was this review helpful?
Rating Breakdown
5/5
3/5
5/5
5/5
Pros:
I'd Buy It Again, Price, Easy To Use, Quiet
Cons:
Packaging

Excellent Product
By Charles H.
Chetek, Wisconsin
Purchased 07/22/2019 |
Review Posted 08/14/2019
This unit was owner installed and was not difficult to figure things out. Owner did the installation, but had a qualified person on hand to assist.
Charles H. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
I'd Buy It Again, Easy To Use, Features, Reliable
Cons:
NONE
Product Q&A
(2)

Product Questions
Answered by Ken, the eComfort Product Expert
Can you route the exhaust outside?
Jeffrey
from Arizona
August 25, 2018
Can this Kohler 8kW Home Standby generator be started remotely?
Kris
from Idaho
December 22, 2016
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