Generac 5000 / 4000-Watt Dual Fuel Recoil Start Gasoline / Propane Powered Portable Generator-GP4000 DF 81552
- Dual Fuel

Model GEN-4000W-INVERTER-30AInverter Generators
2-Year GridGuardPlus Warranty included. Every item we sell is backed by our two-year warranty. Questions? Call 1-800-680-4080.
This portable 4,000W gas inverter generator delivers clean power with under 3% THD and runs up to 14 hours at 25% load. It has a 30A outlet for heavier loads, and its portable roll-frame design makes it easy to move for camping, RV trips and home backup power.
A gas generator makes its own power from fuel, so it can run for as long as you keep it fueled, with no wall outlet needed. Always run it outdoors and well away from windows, doors and vents.
Add up the wattage of everything you plan to power at the same time and keep it below the generator's output rating. Motors and compressors briefly draw more power when they start. A portable generator is not designed to run an entire home.
Anyone who needs to power an entire home, central air conditioning or other heavy loads at once, or who needs to run power indoors or in an enclosed space.
What can it run?
Add up the running watts of the items you want to power at the same time and keep the total below the generator's 4,000W rating.
Can I use it indoors?
No. Gas generators produce carbon monoxide and must only be used outdoors in open air.
What does under 3% THD mean?
THD measures how clean the power is. Lower is better, and under 3% is good for sensitive electronics such as phones and laptops.
Can I bring it on a plane?
No. Gas generators cannot be transported by air.
Orders placed before 2:00 pm ET on a business day ship the same day from Orlando; Saturday orders before 1:00 pm ET go out that afternoon. After that, it ships the next business day.
Delivery takes 3–5 business days after dispatch to most US addresses, and 5–8 to Alaska, Hawaii and US territories.
Yes — tell us within 30 days of delivery and send it back unused, in its packaging, for a full refund. If it is faulty, damaged in transit or not as described, we pay the return; if you have changed your mind, the return shipping is yours, and we quote it before anything is booked.
Every item under $550 counts, and you can mix them: 2 items save 5%, 3 save 10%, 5 or more save 15%. The saving is taken off automatically in the cart — there is no code to enter.
Online orders are limited to $1,099 each, before sales tax. The quantity selector and the cart stop at that figure, so checkout never surprises you.
Orders over $150 ship with signature on delivery, so a missing parcel can be claimed. Your tracking number is emailed the moment the label prints.
