A Generac 5500 is a combustion engine. Neglect kills it faster than overuse.
This requires professional installation by an electrician.
First, a critical clarification for buyers: "5500 Generac" is not a single SKU. It refers to a class of generators that produce 5,500 watts of surge (starting) power. Historically, this points to two primary models:
The key spec to look for is Running Watts. A true "5500" unit typically offers:
This distinction is vital. Your microwave needs 1,000 running watts, but your well pump might need 3,000 surge watts just to start moving. 5500 generac
If your 5500 RPM Generac suffers a "rod knock" or loses oil pressure completely while running, do not rebuild it. The crankshaft is likely scored beyond repair, and the block is often damaged.
Real-world cost: A new short block for a 5500 RPM Generac costs $2,200–$2,800. Add labor ($1,000+), and you are better off buying a modern 3600 RPM or inverter generator.
Do not just add gas and pull the cord. Follow these steps to ensure longevity.
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. A Generac 5500 is a combustion engine
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 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). First, a critical clarification for buyers: "5500 Generac"
How does the Generac stack up against Honda, Champion, and Westinghouse?
| Feature | Generac GP5500 | Honda EM6500SX | Champion 5500 Dual Fuel | Westinghouse WGen5500 | | :--- | :--- | :--- | :--- | :--- | | Running Watts | 5,500 | 5,500 | 5,500 | 5,500 | | Engine | Generac OHV | Honda GX390 | Champion OHV | Westinghouse OHV | | Noise Level | ~72 dBA | ~67 dBA | ~73 dBA | ~72 dBA | | Fuel Type | Gasoline | Gasoline | Gasoline/Propane | Gasoline | | Price Range | $$ | $$$$$ | $$ | $ | | Weight | 205 lbs | 190 lbs | 195 lbs | 150 lbs |
Verdict: The Honda is quieter and cleaner (low THD) but costs 3x as much. The Champion adds propane flexibility. The Westinghouse is lighter but has a shorter warranty. The Generac 5500 sits in the middle—reliable, easily serviced (local dealers everywhere), and fair-priced.