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Generac Guardian™ 17kW Aluminum Home Standby Generator

Generac Guardian Electric Generators and Accessories
Model: 5886
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
3 Reviews
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  • Features
  • Specs
  • 5
  • 3
  • Articles
  • Accessories
Run Watts
Rated Watts
120/240 Single-Phase

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 Nexus Smart Switch™

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

Operates On Clean Burning, Efficient Natural Gas or LP (Vapor)

Skewed Rotor Design For Smooth Output Waveform "Clean Power"
Automatic voltage regulator equipped for +/- 1% regulation

Nexus™ Digital Controller Monitors & Controls All Functions
Provides system status - compatible with Nexus™ wireless monitors

Sound Attenuated Weather Proof Enclosure
Attractive styling with lockable acess doors
Incorporates electrostatically applied epoxy paint technology
Sound dampening enclosure limits sound pressure to a low 66dB(A)
1' flexible fuel line and manual included

Built-in Battery Charger (Battery Sold Separately)

Automatic Transfer Switch - ATS (Sold Separately)
Customize your system based on your actual application
Select the ideal ATS & DLM™ modules for load shed capabilities

Listed to UL2200 Engine/Generator Standard for Safety
Engine Brand
Generac OHVI
992 CC
Consumer Engine Warranty
3 Years
Commercial Engine Warranty
3 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Product Specs
120/240 Single-Phase
60 Hertz
Surge Watts
17000 Watts
Rated Watts
17000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
16000 Watts
LP Power Capacity
17000 Watts
NG Fuel Consumption @ 50% Load
183 (BTU: 183,000 BTU/HR) ft³/hr
LP Fuel Consumption @ 50% Load
1.61 (BTU: 146,108 BTU/HR) gallons/hr
Rated Amps
71 @ 240 Volts (Single Phase) Amps
Decibel Rating @ 7m
66 dbA
Transfer Switch
Automatic (Not Included)
Not Included (525 CCA)
A/C Ton Rating
Cooling System
Air Cooled
UL Listed
Grade Type
Made in USA
421 Pounds
Product Style
Standby Generator
Product Length
48 Inches
Product Width
25 Inches
Product Height
29 Inches
Consumer Warranty
3 Years
Commercial Warranty
3 Years
  5 Questions
Q: Does the 5870 construction (enclosure make up) meet NFPA 37 condition 2 requirement?
by Bob from New Jersey on October 02, 2012

A: Subsection 4.1.4 of NFPA 37 reads as follows:

“4.1.4 Engines Located Outdoors. Engines, and their weatherproof housings if provided, that are installed outdoors shall be located at least 1.5 m (5 ft) from openings in walls and at least 1.5 m (5 ft) from structures having combustible walls.
A minimum separation shall not be required where the following conditions exist:

(1) The adjacent wall of the structure has a fire resistance rating of at least 1 hour.
(2)* The weatherproof enclosure is constructed of noncombustible materials and it has been demonstrated that a fire within the enclosure will not ignite combustible materials outside the enclosure.”

A4.1.4 (2) Means of demonstrating compliance are by means of full scale fire test or by calculation procedures.
Because of the limited spaces that are frequently available for installation, it has become apparent that exception (2) would be beneficial for many residential and commercial installations. With that in mind, the manufacturer contracted with an independent testing laboratory to run full scale fire tests to assure that the
enclosure would not ignite combustible materials outside the enclosure.

Per Generac Owner's Manual (All 8, 10, 14, 17 & 20kW Air Cooled Automatic Standby Generator):

The criteria was to determine the worst case fire scenario within the generator and to determine the ignitability of items outside the engine enclosure at various distances. The enclosure is constructed of non-combustible materials and the results and conclusions from the independent testing lab indicated that any fire within the generator enclosure would not pose any ignition risk to nearby
combustibles or structures, with or without fire service personnel response.

Based on this testing and the requirements of NFPA 37, Sec 4.1.4, the guidelines for installation of the generators listed above are changed to 18 inches (457mm) from the back side of the generator to a stationary wall or building. For adequate maintenance and airflow clearance, the area above the generator should be at least 4 feet with a minimum of 3 feet at the front and ends of the enclosure.
This would include trees, shrubs and vegetation that could obstruct airflow. See the diagram on the installation drawing within the owner’s manual on under the specs link for details.

Generator exhaust contains DEADLY carbon monoxide gas. This dangerous gas can cause unconsciousness or death. Do not place the unit near windows, doors, fresh air intakes (furnaces, etc.) or any openings in the building or structure, including windows and doors of an attached garage.

by Mike, Product Expert

Q: Can you tell me how many inches of water pressure we need for the 183cubic feet per hour. Aslo, what diameter pipe would be required for a 30 foot run?
by Paul Reale, P.E. from Georgia on March 25, 2012

A: 5 to 7 inches of water column for natural gas and per the manufacturers recommendations on a 30 ft run with a 17kW generator you would need to use a 1 inch pipe which has a maximum distance of 40 ft.

If you need to go any farther then you must step-up to a 1-1/4 inch pipe which has a maximum distance of 190 ft.

by Mike, Product Expert

Q: Jim I have a 100 amp Pre-Nexus service rated transfer switch. Can I use this with a nexus generator? Ive heard there is some special wiring for the battery charger to work
by Mike Noonan from Michigan on April 18, 2011

A: There is a special kit that needs to be added to the switch to accept the 120V connection which provides the power to the internal generator controller for the charger. These kits are available from your local Generac dealer - Part Number: 0H93030SRV.

by Mike, Product Expert

Q: We have a geo thermal system in our home. Obviously, we do not have a compressor for our air conditioning. How does this affect the size of the generator we will need?
by Duane Maxey from Illinois on March 23, 2011

A: A Geo-Thermal system has several pumps that operate within it and these pumps can require a large amount of amperage at start up and can require a large generator. It is recommended to have a certified electrician assist you will properly sizing your generator due to the Geo-Thermal system you have.
by Mike, Product Expert

Q: Can this generator be anchored to the slab? If so, can you provide an anchor bolt layout
by Gregg Deemer from Texas on January 21, 2011

A: Generac's model 5885, as with all of their standby generators, are anchored to the pallet at all 4 corners with special anchors which can be used to anchor the unit directly to your concrete base using concrete bolts.
by Mike, Product Expert

Generac Guardian 5886 Reviews & Ratings
Overall Rating
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
Reliable (1)
Exceeded Expectations (1)
Easy To Use (1)
Durable (1)
None to display.
3 Reviews  Sort by 
Purchased from Electric Generators Direct
Purchased 2/21/13
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Customer Service!
We are an electrical contracting company and we've purchased quite a few generators from Electric Generators Direct. I like their whole purchasing process from start to finish. They say what they are going to do and then follow through. The last generator we purchased was delivered with damage to the front panel and top. We took pictures and reported the damage the same day we received the generator. Jennifer in the logistics department was very helpful in guiding us through the process of... more
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Keith M.
North Stonington, CT
Purchased from Electric Generators Direct
Purchased 6/3/13
5 out of 55 out of 55 out of 55 out of 55 out of 5
Well since i now have a stand by generator I'll probably never loose power again. But it is a nice feeling to know its there just in case.
Pros: Durable, Easy To Use, Exceeded Expectations, Reliable
Keith Recommends This Generac Guardian Product
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Huddleston, VA
5 out of 55 out of 55 out of 55 out of 55 out of 5
Right after we bought this place and moved in (2 yrs ago), a winter storm killed the power for 18 hrs. Fortunately (so to speak), it was so cold, we moved all the frig food out on the screened porch and saved the perishables.
The next day, I had one of these beauties delivered and installed - with the auto transfer switch. We had a Generac at our farm.
While it wasn't the hoss this one is, it did the job at the time.

Since installing, Ma Nature has killed the power several times. After 10... more
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5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
5 Reviews
 1   Q&A


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Shop for the Generac Guardian™ 17kW Aluminum Home Standby Generator at Electric Generators Direct. Research Generac Guardian 696471058864 standby generators air-cooled generator online. Find Generac Guardian 5886 standby generators air-cooled generator & Guardian 17KW liquid propane and natural gas operated generator features and specifications.