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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 6 left in stock, order soon!
Arrives
Nov 29 – Dec 4
At a glance
- Condition
- New
- Style
- 19,300 Starting Watts
- Dimensions
- 58.5"L x 30.9"W x 36.5"H
- Weight
- 450 lb
- Color
- Transfer Switch Compatible
- Material
- Plastic
- Wattage
- 15500 watts
- In the box
- Generac 7705 GP15500EFI 15,500-Watt Gas-Powered Portable Generator - Powerful Electronic Fuel Injection Engine - COsense Technology - Emergency Backup Power and Job Sites - 49 State Compliant
- Warranty
- 3 Year Limited Warranty
Features 5
- Powerful Performance: With an 816cc Electronic Fuel Injection Engine from Generac, the 7705 GP15500EFI portable generator delivers optimal performance and efficiency, ensuring you have the power you need, when you need it
- Smart Protection - Stay safe with the integrated COsense technology. This smart generator can detect and alert you of hazardous carbon monoxide levels during operation, ensuring your safety at home or on the go.
- Extended Runtime: The GP15500EFI boasts a long-lasting engine and a large-capacity steel fuel tank with a built-in fuel gauge, ensuring you have power when you need it most
- Built for Durability: Designed to thrive in rough environments, this generator features covered outlets for added protection, a rugged 1.25-inch steel-tube cradle for strength, and heavy-duty, never-flat wheels for easy transportation
- Maintenance Made Easy: Keep your generator in top shape with the hour meter that tracks maintenance intervals. Plus, the low-oil level shutdown feature automatically safeguards the engine from damage, ensuring a long and reliable lifespan
Description
From emergency home backup to DIY projects to the jobsite, the Generac GP15500EFI portable generator provides high wattage, dependable portable power. Equipped with an 816cc engine with Electronic Fuel Injection, the GP15500EFI delivers power efficiently, providing up to 11 hours of runtime at 50% load. TruePower™ Technology safely powers sensitive electronics, appliances and tools while onboard COsense® Technology provides powerful protection against hazardous carbon monoxide. The GP15500EFI also features electric start (battery included), low-oil shutdown protection, circuit breaker protected outlets and an hour meter with maintenance resets. The included never-flat wheel kit and available lifting eye accessory make transportation easy around the home or jobsite.
Specs 32
| Brand | Generac |
|---|---|
| Wattage | 15500 watts |
| Fuel Type | Gasoline |
| Power Source | Gas powered |
| Recommended Uses For Product | Commercial, Residential |
| Item Weight | 450 pounds |
| Voltage | 120 V AC |
| Output Wattage | 15500 |
| Special Feature | Electric Start |
| Additional Features | Electric Start |
| Engine Type | 4 Stroke |
| Ignition System Type | electric start |
| Tank Volume | 5 gallons |
| Engine Displacement | 816 cubic centimeters |
| Total Power Outlets | 6 |
| Engine Power Maximum | 15.5 KW |
| Starting Wattage | 19300 watts |
| Running Wattage | 15500 watts |
| Frequency | 60 hertz |
| Runtime | 11 hours |
| Color | Transfer Switch Compatible |
| Material Type | Plastic |
| Brand Name | Generac |
| Model Name | GP15500EFI |
| Model Number | 7705 |
| Item Highlight | 15,000 Running Watts, RV Ready, Ultra Quiet Operation, Heavy Duty Frame, Emergency Power, 49 State Compliant |
| Number of Items | 1 |
| UPC | 696471083705 |
| Manufacturer | Generac |
| Item Type Name | 15,500-Watt Gas-Powered Electric-Start Portable Generator with Cosense & EFI engine |
| Manufacturer Part Number | 7705 |
| Item Dimensions L x W x H | 58.5"L x 30.9"W x 36.5"H |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 29 – Dec 4
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Excellent
Style: 19,300 Starting Watts
Used daily for our business It's loud but easy to use. We use non-ethenol fuel in it & change the oil before the recommended & have had no issues. Have almost 500hrs on it. Quality is good, runs well. I wish it were cheaper, but compared to others it's in the money. We had a duramax prior & it didn't run well & ended up frying our equipment. This one is OK for electronics. Would recommend
...
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Reviewed in the United States on December 22, 2024 by Amazon Customer
Great product for value paid.
Style: 19,300 Starting Watts
Great product for the value paid. Easy to start, easy to set-up.
Reviewed in the United States on August 9, 2025 by JWH
Won't even start
Style: 19,300 Starting Watts
I had a bad experience with Amazon after buying this. The first machine that was delivered had a massive dent in the fuel tank where it had clearly been dropped onto the ground from a height. I only found that out after unboxing (something that takes an hour because it's in a crate). I contacted Amazon who did arrange to have it replaced. When the new one arrived, it won't even start. There is something fundamentally wrong with it - the battery is good, it has correct fuel, etc. but the starter motor won't turn over. The local dealer don't know what is wrong with it and Generac are no help at all.
...
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Reviewed in the United States on November 7, 2025 by Saperlo
Runs great
Style: 19,300 Starting Watts
Worked perfect, easy to use.
Reviewed in the United States on February 24, 2024 by Elaine Lippert
Parts Missing
Style: 19,300 Starting Watts
I like the build quality. I'm currently breaking in the generator, runs great. Made in USA definitely a plus. Value for the money spent is good compared to overseas models. The issue is that the axle for the wheel kit is missing from the wheel kit box. You'd expect better quality checking before shipping. Currently have been on hold w/ Generac support 25 min. I got a very nice girl to help me with this issue, so we'll see how good the support is. I'm getting the axle @ N/C under warranty. The drag is the 7-10 business days for shipping because Generac doesn't expedite shipping. UPDATE: Generac did UPS me an axle kinda quick, so kudos to them for that. Generator is running fine so far for 10hrs on brake in, only glitch was having to reset spark plug gap to proper .030 as it started to sputter a little. Spark plugs are gapped wrong from factory @ .018. I'm a auto tech so not a big deal. So far I would recommend this unit. It is well built, not bad on fuel so far & I'm picky. Also I like the fact it has AVR instead of capacitor regulation. Better for electronics.
...
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Reviewed in the United States on October 28, 2024 by Begeiled
My new General generator didn’t work
Style: 19,300 Starting Watts
When I received the generator and put the wheels on, it would not start. Then I called Genrac and the told me to return it.
Reviewed in the United States on January 30, 2024 by Chris Herbin