Free Shipping & Tax-Free.
Call or Text: 888-332-7989 for Expert Advice & Today’s Best Price.

  FREE SHIPPING & SALES TAX FREE!(Except Wisconsin)

Need Help? Toll Free Call Now:

888-332-7989
support@energysystemscentral.com
Hot
New
In stock
Pre-order
Out stock

Generac 15500W EFI Portable Generator Electric Start COsense 49ST

By: Generac SKU: 7705 IN STOCK
$4,219.00
FOUND A LOWER PRICE?

Let us know and we will beat it. Get the best deal online, Always.

Authorized Dealer
Full Manufacturer Warranty Included
Free Shipping, No Sales Tax*
No Sales Tax Outside Wisconsin
30 Day Return Window
Clear Policies. No Runaround.
Specialist Support Team
Pre And Post Purchase Assistance
Description Shipping & Easy Returns Why Buy From Us

GP15500EFI Portable Generator

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. 

Features

  • Featuring COsense Technology: STOPS. ALERTS. SAVES. Powerful protection against hazardous carbon monoxide.
  • Generac 816cc EFI Engine - Delivers the right amount of power to get the best performance and efficiency out of your engine 
  • TruePower Technology - With less than 5% THD, safely powers sensitive electronics and tools 
  • Low-Oil Pressure Shutdown - Automatically safeguards engine from damage 
  • Large Capacity Fuel Tank - With incorporated fuel gauge, provides durability and extended run times 
  • Homelink Manual Transfer Switch Compatible - When paired with a manual transfer switch, the GP15500EFI is powerful enough to provide whole home backup and is a great alternative to a Home Standby Generator. 
  • Hardened 1 ¼” Steel Tube Cradle - For added strength and durability 
  • Hour Meter - Tracks maintenance intervals
  • Heavy-Duty, Never-Flat Wheels - For reliable portability
  • Electric Start - Battery Included - Provides hassle-free start-up 

Resource

View Spec Sheet

Specifications

  • Product Series: 7705
  • Fuel Tank Capacity (gal): 14.2
  • Oil Capacity (qt): 2.2
  • Starting Method: Electric Start
  • Battery Size: 120/240 VAC
  • Wheel Kit Included:
  • Engine Type: OHVI
  • Engine Size (Liters): 816cc
  • Length (in): 39.5
  • Width (in): 30.9
  • Height (in): 36.5
  • Weight (lb): 420
  • Running Watts (W): 15,500
  • Starting Watts: 19,300
  • Run Time @ 50% Load (hr): 11
  • Extension Cord Included:
  • Parallel Capable:
  • Transfer Switch Included:
  • WiFi Factory Installed:
  • Non Wi-Fi / NFPA 110 Capable:
  • Controller Type: N/A
  • Enclosure: N/A

Free Shipping Across the United States.Read our full Shipping Policy here.

Market-Leading 30-Day Returns Process.Read more about our Returns Policy here.

Choosing the right retailer matters, especially for critical power and off-grid systems. Here’s what sets Energy Systems Central apart.

  • Free Shipping Nationwide: Transparent pricing with no hidden fees at checkout.
  • Best Price Assurance: If you find the same product offered for less, we’ll review and match it where applicable.
  • Easy 30-Day Returns: Clear, straightforward return policies designed for peace of mind.
  • Expert-Led Support: Speak directly with knowledgeable specialists who understand the products. Call us at 888-332-7989.

FREQUENTLY ASKED
QUESTIONS

Yes. We provide free standard shipping on all orders shipped within the United States. Shipping costs are included in the listed price with no hidden fees at checkout.

Most orders are processed within 1 to 2 business days. Delivery times typically range from 3 to 7 business days depending on your location, carrier scheduling, and product size.

We offer a 30 day return window for eligible products that are unused and in original condition. Our support team will guide you through the return or exchange process if needed.

Absolutely. Yes. Our knowledgeable product specialists are available by phone, live chat, or email to help you select the right equipment for your application.

Most products include a manufacturer warranty, typically starting at one year. Warranty terms vary by brand and model and are listed on each product page.

Yes. We are an authorized retailer and only sell brand new, genuine products sourced directly from manufacturers or their approved distributors.

Gas generator rear angle

Generac 15500W EFI Portable Generator Electric Start COsense 49ST

$4,219.00