Best Portable Generators in 2026

Buying Guides · Updated 2026-11-03

Inverter vs. conventional: the decision that comes first

Two different machines hide under the name "portable generator":

• Inverter generators produce clean, stable power (under 3% THD), throttle down at light loads, and are dramatically quieter — 48–61 dBA for the models here. They're safe for laptops, TVs, CPAPs, and furnace control boards without caveats. They cost more per watt.
• Conventional (open-frame) generators are cheaper per watt and the only way to get 240V and 10,000+ W without spending standby money, but they're loud (67–74 dBA here), burn fuel at a fixed 3,600 rpm regardless of load, and their dirtier power makes some modern furnace boards and electronics unhappy.

Rule of thumb: if it will run near bedrooms or power anything with a circuit board you care about, buy an inverter. If it will sit at the far end of the yard feeding a transfer switch during long outages, a big conventional dual-fuel earns its noise.

How many watts do you actually need?

Portables are sold by starting watts; what matters is running watts versus your loads:

• 1,800–2,000 running W — fridge, lights, phones, router, TV, a fan. Not a furnace blower plus everything else at once.
• 3,500–4,500 running W — the above plus a furnace blower or a window AC, a microwave in turns, or an RV air conditioner. The realistic outage class for most homes using extension cords.
• 10,000+ running W — whole-home territory through an inlet box and transfer switch, including a well pump and (with a soft starter) central AC. At this point also price a standby unit; our standby generator guide and generator sizing guides run that math.

The comparison table

Approximate street prices as of late 2026. Noise figures are manufacturer ratings, usually at quarter load and 21–25 feet — treat them as comparable to each other, not as promises.

The picks, by buyer

Best small generator, full stop: Honda EU2200i. The EU2200i is the unit every other small inverter is measured against: 1,800 running watts, 48 dBA at quarter load, a commercial-grade GXR120 engine, and a dealer network that stocks parts everywhere. It runs 3.2–8.1 hours on less than a gallon, and two can be paralleled if needs grow. The honest criticisms are price (around $1,150, roughly 2.5× the WEN below), recoil-only start, and a small tank that needs attention during long outages. Buy it if the generator will be used often and kept for a decade.

Best budget pick: WEN 56235i. The 56235i matches the Honda's class on paper — 1,900 running watts (100 more than the Honda, in fact), 51 dBA at quarter load, and at 39 lb it's the lightest unit here — for around $450. Its standout feature is unglamorous: a fuel shutoff that lets the carburetor run dry before storage, which prevents the gummed-carb failure that kills most stored generators. Trade-offs are a 2-year warranty and a thinner long-term track record. For a unit that sits in a garage waiting for two outages a year, it's the rational buy.

Best midsize inverter: Westinghouse iGen4500. This is the outage generator we'd hand most households: 3,700 running watts (enough for fridge, furnace blower, sump pump, lights, and router simultaneously), a rated 52 dBA that makes it the quietest in its class by a wide margin, remote/electric/recoil starting, an RV-ready TT-30R outlet, and up to 18 hours at quarter load on 3.4 gallons. At 98 lb it's a two-person lift into a truck. Around $900.

Best dual-fuel inverter: Champion 4500W Dual Fuel. Same size class as the Westinghouse, slightly louder (61 dBA), but it runs on propane as well as gasoline: 3,500 running watts on gas, 3,150 on propane, with runtimes up to 14 hours on a tank of gas or 21 hours on a standard 20 lb propane bottle. Propane stores indefinitely and doesn't gum carburetors, which makes this the set-and-forget pick for people who don't want a fuel-maintenance routine. Electric start and CO Shield auto-shutoff are standard. Around $1,000.

Best budget 240V option: Firman P03631. The P03631 is a conventional open-frame generator, with everything that implies: 3,650 running watts of 120/240V power (so it can feed an inlet box or run a 240V well pump, which no inverter in this price range does), remote start, a 5-gallon tank good for about 14 hours at half load — and 67 dBA of noise and non-inverter power quality. Around $800, it's the cheapest route to 240V backup; just keep electronics on a surge protector and accept the racket.

Best whole-home portable: DuroMax XP13000EH. This is a standby generator's output — 10,500 running watts on gasoline, 10,000 on propane — in a 234 lb wheeled frame, for around $1,300. The 50A outlet connects to a transfer switch or inlet box and runs a well pump, most of a house, and (with a soft-start kit) central AC. It is also 74 dBA, drinks fuel at full tilt, and its conventional output isn't what you'd choose for sensitive electronics. If your plan is "power the house through a panel," it's the value benchmark; compare it against the installed cost in our whole-house generator cost guide before deciding a portable this big beats a standby.

Portable generator or something else?

A portable generator is the cheapest path to real outage wattage, and the only option here that refuels in two minutes at 2 a.m. The costs are your labor: storage, fuel rotation, oil changes, and hauling it out in the weather — our standby maintenance guide covers the upkeep habits that apply to portables too. If your outages are short and your loads are lights-and-fridge, a portable power station is silent, indoor-safe, and zero-maintenance. If outages are long and frequent, that's the case for a standby generator that starts itself. Many owners land on the hybrid: a midsize inverter for long, cheap runtime, charging a power station that carries the house quietly overnight.

FAQ

Can a portable generator run a whole house?

Yes, with conditions. A 10,000 W+ unit like the DuroMax XP13000EH, connected through a transfer switch or interlocked inlet box, runs most homes' essentials plus a well pump — and central AC if a soft starter is fitted and other big loads are managed. The 3,500–4,500 W inverters run a generous set of corded essentials but not a whole panel. Never backfeed through a dryer outlet; it's illegal and genuinely dangerous to line workers.

Is an inverter generator safe for a CPAP, laptop, or furnace?

Yes — that's their main selling point. Inverter models here produce under 3% total harmonic distortion, comparable to wall power. Conventional generators can output 15–25% THD, which most devices tolerate but some furnace control boards, UPS units, and audio gear reject or misbehave on. If a conventional generator is your plan, a power station between it and sensitive loads (charged by the generator, powering the electronics) is a common fix.

How loud is 52 dBA, really?

Roughly a quiet conversation at the same distance. Manufacturer ratings are taken at quarter load, 21–25 feet away; at full load expect several dB more. For context in this lineup: the iGen4500 at 52 dBA is a generator neighbors may not notice; the DuroMax at 74 dBA is lawn-mower territory and everyone will notice. If the generator will run overnight near bedrooms — yours or a neighbor's — noise class should drive the decision as much as wattage.

Is dual fuel worth paying for?

For stored emergency equipment, usually yes. Propane doesn't degrade in storage, doesn't varnish carburetors, and a couple of 20 lb bottles (or one 100 lb tank) outlasts most outages; you give up roughly 10% of running watts versus gasoline. It matters less for generators that also earn their keep camping or on job sites, where they burn fresh gasoline regularly anyway.

How do I keep a portable generator alive in storage?

The failure mode is almost always stale fuel in the carburetor. Run the carb dry (the WEN's fuel shutoff does this by design), use stabilizer in stored gasoline or drain the tank, change the oil on schedule, and exercise the unit under load for 20–30 minutes every couple of months. Propane models sidestep most of this. A generator that won't start during an outage is worse than none — it replaced a plan.