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Product Features
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Product Details
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![]() A 999cc Generac OHVI® Engine delivers reliable performance with its long-life design. View larger. |
![]() The external panel features a main line circuit, at-a-glance status indicator, and GFCI outlet for outdoor power needs. |
![]() Standby generators power up automatically within seconds of a power outage to keep your family safe and comfortable. View larger. |
![]() This automatic standby generator offers simple, digital controls. |
Initial setup is easy. The generator arrives pre-wired and equipped with the necessary installation gear: a 200 Amp service entrance rated transfer switch , an outdoor connection box, a flexible fuel line pigtail, and a composite mounting pad. (Additional items and tools may be needed to complete the installation to meet local codes. Consult a licensed professional for further details.)
The unit can be programmed to perform a weekly exercise at the time of your choice, so it will be ready for continuous and reliable operation on a moment's notice. For convenience, it also offers clear, digital controls, an at-a-glance status indicator, and an external GFCI outlet to accomodate your outdoor power needs.
Superior Technology for Secure Output, Quiet Operation, and Durability
Thanks to Generac's exclusive True Power Technology, this generator provides clean, continuous power, so sensitive electronics and microchip appliances like laptops and HVAC equipment can be operated without the worry that unexpected power surges bring. Also featuring Generac's patented Quiet-Test technology, this generator is truly neighborhood-friendly: it's self-test mode is as hushed as an idling car to ensure that your daily routine is unaffected.
The generator's aluminum enclosure offers superior corrosion resistance and is protected by Generac's proprietary RhinoCoat system--a unique process that binds the paint to the metal surface for a long-lasting, durable finish. This allows the generator to sit outdoors and withstand harsh weather conditions without developing an unsightly appearance.
Like all Generac generators, this model is UL (Underwriters Laboratories) listed for safety.
Rugged, Worry-Free Design
The generator features the 999cc Generac OHVI® Engine, an exclusive air-cooled generator engine with a high-performance design that can accommodate large electrical loads. The engine optimizes power to respond swiftly to changing conditions. To add to your peace of mind, the engine requires routine maintenance only once every two years, or after 200 hours of use.
This Generac generator meets CARB requirements. It requires a Group 26R 12-volt minimum 525 CCA battery (sold separately).
What's in the Box
Generac Guardian Series 5744 20,000 Watt Air-Cooled Propane/Natural Gas Powered Automatic Standby Generator with Aluminum Enclosure; 200 Amp NEMA 3R service entrance rated automatic transfer switch, base fascia and composite mounting pad; installation guide and owner's manual.
| Model # | Rated Power (Watts) | Enclosure Type | Automatic Transfer Switch | CARB Compliant |
|---|---|---|---|---|---|
| 5501 | 8,000 | Steel | 100 Amp NEMA 1 8 circuit load center | Yes | |
| 5502 | 10,000 | Steel | 100 Amp NEMA 1 10 circuit load center | Yes | |
| 5503 | 14,000 | Steel | 100 Amp NEMA 1 14 circuit load center | Yes | |
| 5504 | 17,000 | Steel | 100 Amp NEMA 1 16 circuit load center | Yes | |
| 5505 | 17,000 | Aluminum | 100 Amp NEMA 1 16 circuit load center | Yes | |
| 5744 | 20,000 | Aluminum | 200 Amp NEMA 3R service entrance rated | Yes | |
| 5525 | 20,000 | Aluminum | Not Included | Yes | |
| Model # | Rated Power (Watts) | Enclosure Type | Transfer Switch | CARB Compliant |
| QT02516ANAN | 25,000 | Steel | Not included | Yes | |
| QT03016ANAN | 30,000 | Steel | Not included | Yes | |
| QT04524ANAN | 45,000 | Steel | Not included | No | |
| QT04524ANAY | 45,000 | Steel | Not included | Yes | |
| Model # | Rated Power (Watts) | Enclosure Type | Transfer Switch | CARB Compliant |
| QT02224ANAN | 22,000 | Aluminum | Not included | Yes | |
| QT02724ANAN | 27,000 | Aluminum | Not included | Yes | |
| QT03624ANAN | 36,000 | Aluminum | Not included | No | |
| QT04842ANAN | 48,000 | Aluminum | Not included | No | |
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Most Helpful Customer Reviews
29 of 31 people found the following review helpful:
5.0 out of 5 stars
Generac 20K Home Generator,
By
Amazon Verified Purchase(What's this?)
This review is from: Generac Guardian Series 5744 20,000 Watt Air Cooled Propane/Natural Gas Powered Home Automatic Standby Generator With Transfer Switch (CARB Compliant) (Lawn & Patio)
We haven't had this item very long; however, the ordering experience from Amazon.com went very smooth and the installation went without any problems. The test phase following installation went without incident and the unit fired up on the scheduled date. We hired a contractor to perform the installation for $2700.00 and I watched every step. I would recommend going the contractor route unless you are a professional electrican. I have repaired home electrical appliances, wired new buildings, etc, but I do not consider myself qualified to install this unit.The only problem was: The shipping container was too flimzy to contain such a heavy item and most of it had been mutilated by the time it was delivered. I am surprised that the unit arrived un damaged with the only missing item being one piece of the bottom facia plastic trim, which was replaced by Generac.
20 of 21 people found the following review helpful:
4.0 out of 5 stars
Great whole house generator,
By logger "Russ" (In the Ozarks on Indian Creek) - See all my reviews
This review is from: Generac Guardian Series 5744 20,000 Watt Air Cooled Propane/Natural Gas Powered Home Automatic Standby Generator With Transfer Switch (CARB Compliant) (Lawn & Patio)
I ordered this unit from Electric Generators Direct because at the time they were $500 cheaper than Amazon. This is no longer true. I received the unit in just a few days. I installed the unit and the transfer switch myself without too much difficulty. The entire installation took about 30 hours. There was only one problem with the unit. The transfer switch had a couple of loose connections that could have caused a big problem if not noticed. The transfer switch was humming and I had no power to one phase at my breaker box. When I opened the transfer switch I could hear and see arching. I shut off power to the transfer switch and found two nuts were very loose. I tightened them and ran the start-up tests and everything went great. That was in October 2009. The generator comes on to exercise once a week and has actually carried load for a couple of hours during an intermittent power outage. It was a good purchase and I am happy with it. I do recommend checking all connections including factory connections to make sure they are tight as you install the unit.
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