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The Kohler 8.5res - 8.5 kw home standby generator is available for purchase today.

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Kohler 8.5RES - 8.5 kW Home Standby Generator

(Based on expert analysis, manufacturer ratings and customer reviews)
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5
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Air Cooled Standby Generators
8.5 kW
Rated Watts
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Kohler Command PRO® OHV Engine
Meets emission regulations for U.S. EPA & California
Powerful and reliable engine with hydraulic valve lifters

PowerBoost™ Technology
Greater motor-starting ability for large electrical loads

Cleaner Power for Sensitive Electronics
Protects sophisticated electronics with low distortion (THD)

Faster Response
Kohler™ generators restore power in as little as 10 seconds

Quiet Operation
Maintains neighborhood solitude 65 dB(A) at 7 m (23 ft)

ADC-RES Advanced Digital Control
Digital voltage regulation & engine speed governing
LED display shows system status and setup information

Easy Installation
Polymer base eliminates the need for a concrete pad
Simple field conversion between natural gas and LP

Galvanneal® Steel Enclosure
Rodent-proof construction

Transfer Switch Sold Separately

  Model Number:8.5RES
 Made in USA:Yes
 HP/CC:15.4 HP/624 cc
 Consumer Engine Warranty:5 Years
 Commercial Engine Warranty:5 Years
 Engine RPM:3600 RPM
 Low Oil Alert/Shutdown:Yes
Product Specs
 Voltage120/240 Single-Phase
 Frequency:60 Hertz
 Cooling SystemAir Cooled
 Fuel TypeLP/Natural Gas
 NG Power Capacity7,000 Watts
 LP Power Capacity8,500 Watts
 NG Consumption (50% Load)93 ft³/hr (BTU: 93,000 BTU/HR)
 LP Consumption (50% Load)1.0 gallons/hr (BTU: 90,750 BTU/HR)
 Rated Amps:35 Amps @ 240 Volts (Single Phase)
 Decibel Rating @ 7m:65 db(A)
 A/C Ton Rating3-Tons
 Mounting PadComposite (Included)
 Transfer Switch:Automatic (Not Included)
 Battery:Not Included (525 CCA)
 UL ListedYes
 Weight:430 Lbs. (195.05 kilograms)
 Dimensions:42.5L x 30.5W x 32.5H
(107.95 x 77.47 x 82.55 cm)
 Consumer Warranty:5 Years
 Commercial Warranty:5 Years
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  1 Question
Q: Can this generator be installed in a basement?
by JimSwigart from Ohio on July 12, 2012

A: All the generators we offer are for outdoor installations only.

by Mike, Product Expert
Kohler 8.5RES Reviews & Ratings
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1 Review  Sort by 
Westfield, NJ
Purchased from Electric Generators Direct
Purchased 9/6/12
4 out of 54 out of 54 out of 54 out of 54 out of 5
Kohler 8.5kw Runs Fine After Tech Fixed Failure At 1 Hour
Bottom line: It appears to be running after an early failure. We won't know for sure until we run it hard in the spring at our camp.

Our 12-year-old Kohler 8500 watt generator packed it in August 2012 at 4800 hours. We considered Generac ($1400 cheaper) but since this for an off-grid solar + storage batteries + generator use, we wanted best possible reliability and went with Kohler. It arrived in 4-5 days, a day longer than we hoped for but everything delivered to the Adirondack is like... more
Mike, the Generator Expert
Product Expert
Please be aware that off-grid use will void almost all brands of generator warranties.
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