The Ultimate Guide to the 5500 Generac Portable Generator The 5500 Generac (specifically the GP5500 and GP5500E series) is often cited as the "sweet spot" for homeowners seeking a balance between portability and high power output. Whether you are prepping for hurricane season, managing a construction site, or powering a large RV, understanding the capabilities and maintenance of this unit is essential for reliable performance. Key Performance Specifications
The Generac 5500 series is designed to handle both steady-state loads and the high "surge" power required to start large motorized appliances. According to Generator Bible, the technical breakdown for the GP5500E includes: Running Watts: 5,500 Watts Starting (Surge) Watts: 6,875 Watts
Engine: Generac 389cc OHV engine with cast-iron sleeves for durability.
Run Time: Approximately 10 hours at 50% load on a 7.2-gallon fuel tank.
Weight: Roughly 171 lbs to 190 lbs depending on the specific model and features like COsense® technology. What Can You Power with 5500 Watts?
A 5500-watt generator is capable of running several essential household appliances simultaneously. Per Jackery, this capacity is generally sufficient for:
Kitchen Essentials: Full-size refrigerators and freezers, coffee makers, and microwave ovens.
Home Comfort: Sump pumps, window air conditioning units, and furnace fans (gas or oil). Connectivity: Laptops, routers, and televisions. 5500 generac
Recreation: Large RV air conditioners (up to 11,000 BTU) and heaters Generator Bible. Critical Features and Safety
Modern iterations of the 5500 Generac, such as the Generac 8150 model, include advanced safety and convenience features:
COsense® Technology: This system automatically shuts down the generator if it detects dangerous levels of carbon monoxide (CO) gas.
Electric Start: While the base GP5500 uses a pull-cord, the GP5500E includes an electric start (battery included) for easier operation in cold weather.
PowerDial™: A single dial that integrates all start, run, and stop functions into one simple interface.
Automatic Voltage Regulation (AVR): Protects sensitive electronics from power surges and dips Outbound Power. Fuel and Maintenance Requirements
To ensure your Generac 5500 lasts for years, following the manufacturer's maintenance schedule is vital. The Ultimate Guide to the 5500 Generac Portable
Fuel Type: Use clean, fresh, unleaded gasoline with a minimum 87 octane rating and no more than 10% ethanol Generac Support.
The 20-20-20 Safety Rule: When operating, follow the NOLA Ready safety protocol: keep the unit 20 feet away from your home, allow a 20-minute cooldown before refueling, and keep a $20 battery-operated CO alarm inside your house.
Oil Changes: Typically, the oil should be changed after the first 20–30 hours of "break-in" use and every 100 hours thereafter. Is the Generac 5500 Right for You?
If you need to power a central A/C unit (5-ton) or an entire large home, you may need a larger 10kW+ unit or a standby generator. However, for the average family looking to keep the lights on, the food cold, and the water pumping during an outage, the 5500 Generac remains one of the most trusted and cost-effective portable options on the market.
When the grid goes down, or when the job site moves off the beaten path, the question isn’t if you need power, but how you will generate it. Among the sea of portable generators, one number consistently rises to the top of homeowner and contractor searches: 5500 Generac.
But what exactly does the "5500 Generac" refer to? Is it a single model? A specific wattage class? And most importantly, is it the right machine for your home or business?
In this deep-dive guide, we will explore the Generac 5500 series—specifically the legendary GP5500 and its variants. We will cover starting vs. running watts, fuel efficiency, real-world applications, maintenance schedules, and how it stacks up against the competition. The Ultimate Guide to the Generac 5500: Power,
It can handle essential appliances simultaneously, such as:
A Generac 5500 is a combustion engine. Neglect kills it faster than overuse.
If your unit has an electric start:
You cannot just plug a Generac 5500 into a wall outlet (backfeeding). It is illegal and kills linemen.
Option A: Extension Cords (Simplest) Run heavy-duty 12-gauge or 10-gauge cords directly to appliances. Works for 90% of homeowners. No installation cost.
Option B: Manual Transfer Switch (Best for Home Backup) Install a 30A or 50A manual transfer switch (e.g., Reliance Controls). This connects the generator to 6-10 specific circuits in your breaker panel. When power fails, you flip switches to move those circuits from utility to generator power.
Cost: $400-$800 installed (excluding generator). This is the right way to do it.
The standard tank holds 7.5 to 8 gallons of gasoline.
For extended outages, you will need to store stabilized fuel or consider a propane conversion kit (some GP5500 models come dual-fuel ready; check your local SKU).