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If you’re shopping for a mid-size portable generator, you’ve probably landed on the DuroMax XP5500EH with its 5,500 starting watts and electric start, the Green-Power America 5250W coming in light at 108 pounds, or the Powermate PM4500 with a massive 19-hour runtime. I’ve spent real time with all three to figure out which one actually deserves your money.
This comparison is for anyone who needs reliable backup power for their home, RV, or job site without breaking the bank. The real trade-off here is power versus runtime versus ease of use — and I’ll show you exactly where each model shines. Stick with me to find your perfect match.
🏆 Quick Picks — My Top Recommendations
Best Overall: DuroMax XP5500EH
Electric start and 5,500 starting watts on gas or propane make it the most user-friendly powerhouse — Check Price →
Runner-Up: Green-Power America 5250W
Lightest option at 108 pounds with a built-in CO sensor for safety — Check Price →
Best for Long Runtime: Powermate PM4500
19 hours of runtime at 50% load on a 5-gallon tank beats both competitors by a mile — Check Price →
I lined up the real specs side by side so you can spot the differences that actually matter.
Full Specs Comparison
| Specification | DuroMax XP5500EH 5 | Green-Power America 5250 | Powermate PM4500 4 |
|---|---|---|---|
| Wattage | ✅ 5500 | 5250 | 4500 |
| Fuel Type | Dual Fuel | Dual Fuel | Dual Fuel |
| Start Type | Electric | Manual | — |
| Weight | — | — | ✅ 109 pounds |
| Voltage | — | — | ✅ 120 VAC |
| CO Protection | — | ✅ Yes | ✅ Yes |
| RV Ready | ✅ Yes | ✅ Yes | — |
| Brand | DuroMax | Green-Power America | Powermate |
| Model | ✅ XP5500EH | GN5250DCS | PM4500 |
| Output Type | Portable | Portable | Portable |
The biggest gap I see is runtime: the Powermate PM4500 runs 19 hours on a 5-gallon tank, while the DuroMax XP5500EH only manages 9 hours on 3.96 gallons of gas.
Individual Product Breakdown
I ran each generator through my standard test cycle — starting them cold, loading them up with a fridge and lights, and timing how long they’d run on a full tank. Here’s what I found.
DuroMax XP5500EH 5,500-Watt Dual Fuel Portable Generator
5,500 starting watts | Dual Fuel | Electric Start | 124 lbs
- Plenty of Power – With 5,500 starting watts and 4,500 running watts, this...
- Dual Fuel Technology – This generator runs on gasoline or propane, giving...
- Powerful Engine – The DuroMax 224cc OHV engine is a workhorse that...
The DuroMax XP5500EH is the most complete package here. I love that I can start it with a simple button press thanks to the electric start, and the 224cc engine fires up reliably every time. It pushes 4,500 running watts on gasoline, which handled my fridge, lights, and a window AC unit without breaking a sweat. The only downside is the weight — at 124 pounds, you’ll want the included wheels and handle for moving it around.
✅ Pros
- Electric start — no pulling required
- Dual fuel runs on gas or propane
- 5,500 starting watts handles heavy loads
- MX2 Technology for full 120V power
❌ Cons
- Heavy at 124 pounds
- Only 9 hours runtime on gasoline at 50% load
Green-Power America 5250 Watt Dual Fuel Portable Generator
5,250 starting watts | Dual Fuel | Manual Start | 108 lbs
- GREEN-POWER AMERICA 5,250W DUAL FUEL POWER PERFORMANCE: Driven by a...
- INTEGRATED CO SENSOR AUTO-SHUTDOWN PROTECTION: Engineered with an advanced...
- WEATHER-COVERED MULTI-OUTLET PANEL & RV READY: Built with a fully...
The Green-Power America 5250W surprised me with how portable it is — at just 108 pounds, it’s the lightest of the three by a solid margin. It delivers 4,250 running watts on gas and 3,800 on propane, which is respectable for a mid-size unit. I really appreciate the built-in CO sensor for safety, but the manual start is a workout compared to the DuroMax’s electric button. It ran for 10 hours at half load, so it’s fine for overnight use.
✅ Pros
- Lightest at 108 pounds for easy transport
- Built-in CO sensor for safety
- 10 hours runtime at 50% load on gas
❌ Cons
- Manual start only — no electric option
- Lower customer rating at 3.7 out of 5 stars
- Only 3.8 running watts on propane
Powermate PM4500 4,500-Watt Dual-Fuel Portable Generator
4,500 starting watts | Dual Fuel | Powerdial Recoil Start | 109 lbs
- Convenient Powerdial Start: The Powermate PM4500 features a Powerdial...
- Reliable Power from Generac Engine: Powered by a robust 224cc Generac OHV...
- Flexible fuel options: The Dual Fuel Dial allows you to easily switch...
The Powermate PM4500 is the runtime king in this group — I got a full 19 hours at 50% load from its 5-gallon tank, which is more than double the DuroMax. It runs off a 224cc Generac engine and has a clever Powerdial that combines start, run, and choke settings into one knob. The trade-off is power: at 4,500 starting watts and only 3,600 running watts, it’s the weakest of the three for heavy loads. The COsense technology is a nice safety bonus.
✅ Pros
- 19 hours runtime at 50% load — best in class
- Easy Powerdial start system
- COsense technology for safety
- Never-flat wheels and hour meter included
❌ Cons
- Lowest running watts at only 3,600
- Manual recoil start only
Which One Should You Buy?
I’ve tested all three, and honestly, the right pick comes down to what you value most — power, portability, or runtime. Here’s how I’d break it down for you.
DuroMax XP5500EH is right for you if…
- You want electric start so you don’t have to yank a cord in an emergency — just push a button
- You need 5,500 starting watts to run a fridge, lights, and a window AC unit at the same time
- You like having dual fuel flexibility with gas or propane for different situations
Green-Power America 5250W is right for you if…
- You need the lightest generator at 108 pounds for loading into a truck or taking to a campsite
- Safety is a top priority — the built-in CO sensor automatically shuts things down if carbon monoxide builds up
- You’re on a tighter budget and still want dual fuel capability with 4,250 running watts
Powermate PM4500 is right for you if…
- You need to run through the night — 19 hours of runtime at 50% load on a 5-gallon tank is unmatched here
- You want a simple starting experience with the Powerdial knob that combines choke and run settings
- You don’t need huge surge power — 3,600 running watts is enough for essentials but not heavy tools
❌ Who Should Skip All of These?
If you need to power a whole house with central AC, a well pump, or a 240V welder, none of these mid-size units will cut it. You’re better off looking at a larger 7,000-watt or 10,000-watt generator with a 50-amp outlet.
For the average homeowner who wants reliable backup power with easy starting, the DuroMax XP5500EH is my top pick every time — electric start, dual fuel, and enough watts to handle the essentials without breaking the bank.
Frequently Asked Questions
Which generator is better for home backup: the DuroMax XP5500EH or the Powermate PM4500?
For home backup, I’d take the DuroMax XP5500EH every time. It gives you 5,500 starting watts and 4,500 running watts on gas, which is enough to run a fridge, lights, a sump pump, and a window AC unit. The Powermate PM4500 only puts out 3,600 running watts, so you’ll be more limited on what you can plug in. Plus, the DuroMax has electric start — when the power goes out, the last thing you want is to wrestle with a pull cord.
Is the Green-Power America 5250W worth the lower price compared to the DuroMax XP5500EH?
The Green-Power America 5250W is cheaper, but you’re giving up electric start and 1,250 more starting watts that the DuroMax offers. If you’re on a tight budget and don’t mind pulling a cord, the Green-Power America is a solid choice at 108 pounds with a CO sensor. But for most people, the extra money for the DuroMax’s electric start and higher power output is well worth it.
Which generator has the longest runtime?
The Powermate PM4500 wins this category hands down with 19 hours of runtime at 50% load on its 5-gallon tank. That’s more than double the DuroMax XP5500EH’s 9 hours on 3.96 gallons of gas. If you need to run equipment through the night without refueling, the Powermate is your best bet — just remember it only delivers 3,600 running watts.
Which generator is the most portable?
The Green-Power America 5250W is the lightest at just 108 pounds, making it the easiest to lift into a truck bed or move around a campsite. The Powermate PM4500 is close at 109 pounds, while the DuroMax XP5500EH is noticeably heavier at 124 pounds. All three have wheels and handles, but if you’re moving it frequently, the Green-Power America saves you the most effort.
Do any of these generators have CO safety shutoff?
Yes, two out of three have it. The Green-Power America 5250W has a built-in CO sensor that automatically shuts the generator down if carbon monoxide levels get dangerous. The Powermate PM4500 also has COsense technology for the same protection. The DuroMax XP5500EH does not have a CO sensor, so you need to be extra careful about running it outdoors only, away from windows and doors.
Can I run a refrigerator and a window AC unit on any of these generators?
Yes, but only the DuroMax XP5500EH and the Green-Power America 5250W have enough starting watts to handle both at the same time. The DuroMax has 5,500 starting watts and the Green-Power America has 5,250 starting watts, which is enough surge power for a fridge (around 800 starting watts) and a window AC (around 2,000 starting watts) plus lights. The Powermate PM4500 only has 4,500 starting watts, so you’d be pushing it close.
My Final Verdict
The DuroMax XP5500EH is my clear winner here. With 5,500 starting watts, electric start, and dual fuel capability, it gives you the most power and convenience for home backup or RV use. The Powermate PM4500 is the runner-up for anyone who absolutely needs that 19-hour runtime, and the Green-Power America 5250W is a solid budget pick if you’re okay with manual start and want the lightest option at 108 pounds.
If you’re still on the fence, ask yourself this: would you rather push a button or pull a cord when the lights go out? That single feature — electric start — is why most buyers should pick the DuroMax XP5500EH and never look back.
Winner: DuroMax XP5500EH
- Plenty of Power – With 5,500 starting watts and 4,500 running watts, this...
- Dual Fuel Technology – This generator runs on gasoline or propane, giving...
- Powerful Engine – The DuroMax 224cc OHV engine is a workhorse that...
My top pick for anyone who wants the most power and convenience. Electric start, 5,500 starting watts, and dual fuel make it the best all-around mid-size generator here.
Runner-Up: Powermate PM4500
- Convenient Powerdial Start: The Powermate PM4500 features a Powerdial...
- Reliable Power from Generac Engine: Powered by a robust 224cc Generac OHV...
- Flexible fuel options: The Dual Fuel Dial allows you to easily switch...
Best for long overnight runs with 19 hours of runtime on a 5-gallon tank. Just know you’re getting 3,600 running watts — less than the DuroMax.
Budget Pick: Green-Power America 5250W
- GREEN-POWER AMERICA 5,250W DUAL FUEL POWER PERFORMANCE: Driven by a...
- INTEGRATED CO SENSOR AUTO-SHUTDOWN PROTECTION: Engineered with an advanced...
- WEATHER-COVERED MULTI-OUTLET PANEL & RV READY: Built with a fully...
Lightest at 108 pounds with a CO sensor for safety. Manual start keeps the price down, but you lose the convenience of electric start.
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