Product images: Amazon listings
Written from the listing's specs, not from our own use · How we rate
On paper, the Pulsar PG5250B gets the important things right: 4,250 running watts (5,250 at start-up), a gas-or-propane fuel switch and a stated 12-hour runtime at 50 % load. It makes most sense for a home backup plan that doesn't depend on the gas station; we rate it 7.0/10 from its listing.
| Brand | Pulsar |
|---|---|
| Category | Dual fuel generators |
| Running output | 4250 W |
| Peak output | 5250 W |
| Listed fuels | gasoline, propane |
| Stated runtime | Up to 12 hours at 50 % load |
| Fuel tank | 4 gallons |
| Engine | 224 cc |
| Stated warranty | 1 years |
| ASIN | B01N1G15SD |
Full listing title: Pulsar 5,250W Dual Fuel Portable Generator with Switch and Go Technology, PG5250B
| Running output | Exact listing |
|---|---|
| Peak output | Exact listing |
Rated from the listing's specs, no buyer reviews yet
What it's made for: a home backup plan that doesn't depend on the gas station.
Two generators that are also open frames, of about the same size, closest to it on our rating, each with a dated price.
That's the running figure the listing states, on gasoline. Enough on paper for the fridge, the freezer, the sump pump and a few circuits of lights. Central air on top of that is where the sum stops working.
What it has going for it
Gasoline or propane. Propane keeps for years in a sealed tank and won't gum up the carburetor between storms; gasoline gives you more watts. Propane is rated lower, so find that figure in the manual.
12 h runtime, 4 gal. That is at 50 % load, per the listing. Put the fridge, the furnace fan and the sump pump on it and the hours drop, so plan fuel for the overnight stretch: stabilised cans or a spare 20 lb propane tank.
Extension cords: run a heavy cord from the Pulsar PG5250B's 120 V outlets to the fridge and the freezer, and you're set for a night. Hard-wired loads like the furnace and the well pump can't join in that way.
A transfer switch: the listing doesn't name a 30 or 50 amp twist-lock outlet, so look at the panel on the unit itself before you plan an inlet box around it.
What the Pulsar PG5250B listing names:
Warranty & support: A 1-year warranty, as stated in the listing.
That is the maker's promise, not ours. Keep the order confirmation, and register the Pulsar PG5250B if the maker asks you to.
The manual has the last word on fuel, oil and the outlet ratings; read it before the first start.
At the price on Sep 30, 2026, each 1,000 running watts works out at about $129.18 (price ÷ stated running watts, our arithmetic). That puts it in the cheaper third of the 18 generators of 4,000 to 8,000 running watts we have a price and a stated running figure for.
Count the hookup in the budget too: a heavy cord, an inlet box and a transfer switch or interlock, wired by an electrician, are a separate bill.
The button opens the exact listing (ASIN B01N1G15SD), where today's price, stock and seller apply.
Want it quieter, or cleaner power for electronics? The Westinghouse 5,000W Dual Fuel Inverter (9.2/10) is an inverter, per its listing.
Rather not pull a cord on a January morning? The WEN DF451i (7.4/10) has electric start.
Want a CO shutoff? The WEN DF680iX (7.3/10) names a CO sensor that shuts the engine off.
Our take
What we'd buy the Pulsar PG5250B for is 4,250 running watts (5,250 at start-up), with a gas-or-propane fuel switch as a bonus. No buyer reviews yet, so the Pulsar PG5250B has to win you over on paper. The catch with this Pulsar generator: no CO sensor in the listing, while most picks here have one. We'd pick it if you'd rather store propane tanks than cans of gas; otherwise, put it next to the DuroMax XP5500EH first.
Fill it with oil before the first start, then run it for a few minutes outside with a small load. Fit the wheel kit first; it is easier on the ground.
Pull the cord, let it warm up, then add loads one at a time, the biggest motor first. Propane or gas: decide before the storm and have the hose and the tank ready. The 12 hours on the listing are at a light load; plan a refill at night.
Run it every month or so for 20 minutes. On propane you avoid stale gas in the carburetor; on gas, add stabiliser or run it dry before storage. Our maintenance schedule has the full list.
First oil change after the break-in hours in the manual (the hour meter counts them), then on schedule. Air filter and spark plug once a season, and a cover for the months it sits.
Before the Pulsar PG5250B ships, check your load list: 4,250 running watts (5,250 at start-up) have to cover everything you run at once, motor surges included.
Read the label on each appliance (or the manual) for its running watts, and note which ones have a motor. Our running vs starting watts guide explains why the motor ones need the extra surge.
Plan on heavy-duty extension cords to the appliances, or ask an electrician which inlet and switch would match its outlets. Our interlock vs transfer switch guide compares the two routes.
Outside only, about 20 ft from doors, windows and vents, exhaust pointing away. Pick the spot now, before the storm. Our CO safety and placement guide has the details.
Gasoline goes stale in a few months without stabiliser; propane keeps. Check the propane rating in the manual if propane is your plan. Our fuel storage guide covers storage.
How the Pulsar PG5250B stacks up against the closest alternative, the DuroMax XP5500EH.
| Criterion | Pulsar PG5250B | DuroMax XP5500EH |
|---|---|---|
| Our rating | 7.0/10 | 7.0/10 |
| Running watts | 4,250 W | 4,500 W |
| Peak watts | 5,250 W | 5,500 W |
| Start | Not stated | Electric |
| Runtime | 12 h at 50 % | 9 h |
Both score 7.0/10. The DuroMax XP5500EH adds more running watts (4,500 W) and a higher peak (5,500 W), while the Pulsar PG5250B brings a longer stated runtime (12 h).
We rate it 7.0/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
The listing or manual states 4,250 W running and 5,250 W peak, usually for gasoline. Size your load list against the running watts and keep the peak for motor starts; propane and natural gas ratings are lower. These are the seller's figures, not our measurements (our sizing calculator turns your loads into a running and peak pair).
The listing names gasoline and propane. Output differs by fuel, so check the per-fuel running watts in the manual and whether the hoses you need come in the box. Run it outdoors only, away from doors, windows and vents.
Its listing states 4,250 running watts (5,250 at start-up), the choice of gasoline or propane and up to 12 hours on a 4-gallon tank at 50 % load. These are the seller's figures, not our measurements: how loud it is in your driveway and how it handles your well pump's surge can't be read from a listing.
Your load list: read the label on each appliance (or the manual) for its running watts, and note which ones have a motor. Our running vs starting watts guide explains why the motor ones need the extra surge. How it reaches the house: plan on heavy-duty extension cords to the appliances, or ask an electrician which inlet and switch would match its outlets. Our interlock vs transfer switch guide compares the two routes. Where it will run: outside only, about 20 ft from doors, windows and vents, exhaust pointing away. Pick the spot now, before the storm. Our CO safety and placement guide has the details. Fuel for three days: gasoline goes stale in a few months without stabiliser; propane keeps. Check the propane rating in the manual if propane is your plan. Our fuel storage guide covers storage.
We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.
No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula, plus our editors' read of how it compares with its rivals.