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Generac Guardian 6459
Generac Guardian 6459
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Generac Guardian™ 16kW Home Standby Generator
Generac Guardian™ 16kW Home Standby Generator
Model: 6459
Product Discontinued
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Features

Grade

Emergency

Style

Standby (Air Cooled)

Run Watts

16,000 Rated Watts

Voltage

120/240 Single-Phase

Fuel

LP/Natural Gas

Engine

Generac OHVI

Generac Guardian™ 16kW 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."
  • Fully Automatic Operation When Paired With Generac Smart Switch™
  • Operates On Clean Burning, Efficient Natural Gas or LP (Vapor)
  • Generac OHVI Air-Cooled Engine
  • Features plateau honed cylinder walls and plasma moly rings
  • Full pressure lubrication system w/ 2 year oil change interval
  • Aids in cooling the engine for longer life
  • Skewed Rotor Design For Smooth Output Waveform "Clean Power"
  • Automatic voltage regulator equipped for +/- 1% regulation
  • Evolution™ Digital Controller Monitors & Controls All Functions
  • Provides system status for wireless monitors & Mobile Link™
  • Sound Attenuated Weather Proof Steel Enclosure
  • Incorporates electrostatically applied epoxy paint technology
  • Sound dampening enclosure limits sound pressure to a low 66dB(A)
  • Can Be Installed Within 18" Of A Building*
  • Must be away from windows & doors, *Check Local Building Codes
  • Automatic Transfer Switch - ATS (Sold Separately & Requied)
  • Select the ideal ATS & SMM modules for load shed capabilities
  • 12" Flexible fuel line and manual included
  • Built-in Battery Charger (Battery Sold Separately)
  • 5-Year Limited Warranty & 24/7/365 Customer Care

Specifications

6459
specs product image PID-13991
Overview
Weight
513 Pounds
Made in USA
Yes
Consumer Warranty
5 Years
Commercial Warranty
5 Years
Product Style
Standby Generator
Product Length
48 Inches
Product Width
25 Inches
Product Height
29 Inches
UPC
696471064599
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
16000 Watts
Surge Watts
16000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
16000 Watts
LP Power Capacity
16000 Watts
NG Fuel Consumption @ 50% Load
193 ft³/hr
NG Fuel Consumption @ 100% Load
312 ft³/hr
LP Fuel Consumption @ 50% Load
1.99 gallons/hr
LP Fuel Consumption @ 100% Load
3.57 gallons/hr
Rated Amps
67 Amps
Decibel Rating @ 7m Learn More
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.
66 dbA
Transfer Switch
Automatic (Not Included)
Battery
Not Included (525 CCA)
Enclosure
Steel
A/C Ton Rating
4-Tons
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Engine
Engine Brand
Generac OHVI
CC
992 CC
Consumer Engine Warranty
5 Years
Commercial Engine Warranty
5 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes

Reviews

(15)
Generac Guardian 6459 Reviews & Ratings
Customer Rating
5.00
(16 Ratings)
94% recommend this product
5
(16)
4
(0)
3
(0)
2
(0)
1
(0)
Verified Buyer
Verified Buyer
It Has Arrived!
By Arlon W. 
Dayton, Texas
Purchased 09/09/2016 | 
Review Posted 10/11/2016 
I ordered the generator to replace a 13 KW Generac that I had installed when we built the house 6 years ago. We are ready to move up in size, power few more things when we lose power from our provider. In the six years, we were blessed to have the Generac 13 KW to lean on and if you know Houston TX, it can get pretty uncomfortable without AC and literally the Generac saved our lives. Look forward to this new Generac and the additional rooms we can now have service to.
Arlon W. Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Good Investment
By Dennis B. 
Lockport, Illinois
Review Posted 08/30/2016 
Had PERRO elec. of Rockdale ,IL PAUL install generator. Did all the work himself and was in /out in no time. He knows what he is doing, no mess. Used it two times, no problems GREAT PIECE OF MIND. They stay in touch to make sure you have no problems. NOT TO MANY COMPANIES DO THAT ANYMORE.
Dennis B. Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
Our New Generac Generator
By Donnie C. 
North Judson, Indiana
Purchased 04/23/2016 | 
Review Posted 06/20/2016 
Was pleased to find a unit for a reasonable price with free delivery to our home. Looks good and seems to be working well. Looking forward to having power when our electric goes out.
Donnie C. Recommends This
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Rating Breakdown
Features
4/5
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Quality
5/5
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Performance
4/5
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Value
5/5
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Shepp Electric, Montville, OH
By Anthony M. 
Middlefield, Ohio
Review Posted 06/04/2016 
We found them to be very knowledgeable and handled the installation without any problems. Have not had to have the unit working yet, but feel very comfortable that it will cover any of our worries regarding electrical outages in our area.
Anthony M. Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Value
5/5
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Best Investment EVER!!
By Pam D. 
Merrillville, Indiana
Review Posted 03/04/2016 
We are extremely happy with our purchase, there have been times when the power went out in our area and we were stuck with no power, no heat no lights and just really cold during the winter time, or really heavy rainstorm... My husband saw a commercial for Generac and there was no doubt in his mind that we needed this in our house. This is the best investment we made to our house since we bought it!! When the power goes off Generac comes on within seconds and I do mean seconds!! Thank you guys!!😉
Pam D. Recommends This
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Manufacturer Response
Thank you for providing us with your positive feedback! We are thrilled to learn of your satisfaction with the 16kw automatic standby generator. Don't forget to register with Generac Nation to receive product insights and warranty updates! For your convenience the registration process can be completed online via the following link: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa . Feel free to give us a call at 888-GENERAC (436-3722) if you have any questions.
Generac Guardian
Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Installed Quickly and Professionaly
By Don W. 
Westlake, Ohio
Review Posted 02/01/2016 
My generator was installed by Shepp Electric. The techs were Jason, Jay and Charlie. They had it up and running in no time and were very courteous and professional. I would recommend this company without reservation.
Don W. Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
Generator
By David H. 
Belgrade, Maine
Purchased 09/13/2015 | 
Review Posted 12/03/2015 
It was a great purchase no more worrying about loosing power
David H. Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
Successful Installation
By Rabian B. 
Longwood, Florida
Purchased 09/03/2015 | 
Review Posted 11/05/2015 
We have been very pleased with the Generac Service people. They have been very prompt and easy to work with. He went into great detail to show me how to retrieve the service info on the generator.

We had a 15 KW before and with the 16 KW you can choice for the test to come on every other week instead of weekly. Plus the time is cut down from 12 minutes a week to 5 minutes every other week, therefore Saving propane.

Thanks Generac for your excellent service. It's also a better looking unit too.
Rabian B. Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
TOO EASY
By Patrick T. 
Avondale, Louisiana
Purchased 10/07/2015 | 
Review Posted 10/29/2015 
I replaced an older generator with a model 1 size bigger. Entire sale took less than 7 minutes and that was due to the sales lady having to investigate a technical issue had.
Patrick T. Recommends This
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Rating Breakdown
Features
5/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
Nice install. Small problem.
By David G. 
Bellevue, Michigan
Purchased 06/17/2015 | 
Review Posted 08/21/2015 
This is the 2nd one I have installed. Both were done for friends. Installation was quite simple. (First time I have ever gave a review).

Followed the install directions as before. Had to make a few adjustments to meet local electrical code and mechanical code standards. All went well. Only issue was that the internal clock of the generator seems to be losing time. Actual exercise cycle of the generator keeps moving back about 5 minutes a week. When I checked the clock when owner said it wasn't always the same time it was 20 minutes off. Not sure what is happening, will call Generac on this.
David G. Recommends This
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Manufacturer Response
We are disappointed to learn of the issues that you and the product's owner are experiencing with the unit's clock. To have these particular issues diagnosed and appropriately remedied, we would recommend contacting an independent authorized service provider in the local area. These trained professionals are able to apply any applicable warranty coverage to a unit that has been properly registered. To ensure that the unit is registered for warranty coverage, we would recommend providing the information required via the following link: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa . To locate an independent authorized service provider closest to you, please use your postal code for searching purposes here: http://www.generac.com/dealer-locator?cid=frm-105-ab .
Generac Guardian
Rating Breakdown
Features
4/5
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Quality
5/5
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Performance
4/5
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Value
5/5
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