Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
When the power goes out, your fridge goes quiet and your heat stops. An emergency generator is your backup plan for a blackout — it keeps your furnace running, your food cold, and your sump pump working through a storm. But wattage ratings, fuel options, and safety features vary widely. The wrong pick can leave you fumbling in the dark.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
A good emergency generator turns a potential disaster into a manageable inconvenience. It gives you whole-house power without the cost of a permanent standby system (a system installed by an electrician that automatically powers your home).
Quick Picks
- DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator — Best Overall
- DuroMax XP13000HXT 13,000-Watt Tri Fuel Portable Generator — Tri-Fuel Pick
- Westinghouse 12500 Peak Watt Dual Fuel Home Backup Portable — Remote Start Winner
- DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable — Budget Champion
- A-iPower 10700-Watt Electric Start Portable Generator Gas — Storm-Proven
- DuroMax XP11000iH 11,000-Watt Dual Fuel Portable Digital — Inverter Pick
How To Choose The Best Emergency Generator
Your generator is only as good as the planning that goes into it. Three decisions determine whether you get whole-home comfort or a dim extension cord run — wattage, fuel type, and safety features. Here is what to weigh before you buy.
Wattage: Running vs. Starting Power
A generator has two power numbers: running watts (the steady output it can sustain) and peak or starting watts (the extra surge needed to spin up motors). A fridge might pull 700 running watts but spike to 2,200 watts when the compressor kicks on. Add a well pump (a pump that brings water from a well into your home), a furnace fan, and a few lights, and you are quickly past 5,000 watts. The rule of thumb is to add up the running wattage of everything you need and pick a generator whose running wattage comfortably exceeds that total — with room for the starting surges.
Fuel: Dual-Fuel vs. Tri-Fuel vs. Single Fuel
Gasoline is the most common fuel, but during a widespread outage, gas stations may run dry or lose power themselves. A dual-fuel generator (gasoline and propane) gives you a backup fuel that stores indefinitely without degrading (unlike gasoline which can go bad after a few months). A tri-fuel adds natural gas — meaning you tap into your home’s gas line for unlimited runtime as long as the utility gas pressure holds. If you live in a region with frequent extended outages, the flexibility of multiple fuels is worth the premium.
Inverter vs. Conventional: Clean Power Matters
A conventional generator produces electricity that is fine for lights, tools, and resistive heaters, but the harmonic distortion (an electrical imperfection) can confuse sensitive electronics like laptops, TVs, and medical devices. An inverter generator steps up the current and then converts it to a cleaner sine wave (a smooth electrical pattern, so your electronics run without glitching). The trade-off is that inverters are typically more expensive and have lower peak output than a comparably sized conventional model.
Safety: CO Detection and Transfer Switch Readiness
Carbon monoxide (CO) poisoning from generators kills hundreds of people every year. Modern generators have a CO sensor that automatically shuts the engine down if carbon monoxide accumulates to dangerous levels — do not buy a generator without it. A transfer switch (either a manual interlock or a professional panel) prevents backfeeding — sending power from your generator into the grid, which can kill a lineman working to restore service. If you plan to plug into your home’s breaker panel, look for a 50-amp outlet and transfer-switch-ready labeling.
Quick Comparison
| Model | Best For | Running Watts | Fuel Type | Engine Displacement | Amazon |
|---|---|---|---|---|---|
| DuroMax XP13000EH | Whole-home gas/propane backup | 10,500W (gas) | Dual Fuel (Gas & Propane) | 500 cc | Amazon |
| DuroMax XP13000HXT | Tri-fuel flexibility with natural gas | 10,500W (gas) | Tri Fuel (Gas, Propane & NG) | 500 cc | Amazon |
| Westinghouse 12500W | Remote fob start & compact build | 9,500W (gas) | Dual Fuel (Gas & Propane) | 457 cc | Amazon |
| DuroStar DS13000MX | Budget-friendly high wattage | 10,500W (gas) | Dual Fuel (Gas & Propane) | 500 cc | Amazon |
| A-iPower AP10700E | Storm-proven reliability | 8,500W (gas) | Gasoline | 459 cc | Amazon |
| DuroMax XP11000iH | Clean inverter power for electronics | 9,000W (gas) | Dual Fuel (Gas & Propane) | 459 cc | Amazon |
In‑Depth Reviews
1. DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator
The heavyweight that runs two ACs and keeps the whole block lit.
You get 13,000 watts of peak power backed by a 500 cc engine (the engine size). On gasoline, the XP13000EH delivers enough grunt to run a 3-ton air conditioner, a well pump, a fridge, and home office gear all at once. The dual-fuel interface lets you flip between gasoline and propane in seconds via the front-facing selector. So when gas becomes scarce, you switch to propane without shutting down.
Compared to the similarly-sized Westinghouse 12500W, the DuroMax has a clear edge: a 500 cc engine versus the Westinghouse’s 457 cc engine. That extra displacement helps the DuroMax muscle through simultaneous heavy loads like two HVAC units drawing around 6,000W together. One reviewer noted their entire home comfortably handled that load. The frame is wrapped in heavy-duty all-metal construction with 100% copper windings inside. Buyers report that tolerates years of outdoor storage and rough terrain better than aluminum-wound competitors.
Drawbacks are real. This unit weighs 234 lb, while the Westinghouse weighs 212.1 lb. One buyer described the muffler as “noticeably loud”. It does not produce the clean sine wave of an inverter (a type of generator that makes cleaner power for electronics), so you may hear a hum from sensitive electronics or UPS units (uninterruptible power supplies, which protect electronics from power interruptions). No oil is included in the box. Some owners found the choke label reversed, requiring a quick trial-and-error start on the first run.
The Power to Back It Up
- 500 cc engine with 100% copper windings for superior heat dissipation and life
- Dual-fuel switch works in seconds; runs 3-4 hours on a 20lb propane tank
- 50-amp outlet ready for a transfer switch — powers entire home from one plug
- Owners mention running two HVAC units, fridge, freezers, and office gear without dropout
The Trade-Offs
- No oil, no power cord, and the choke sticker can be reversed — read the manual carefully first
- At 234 lb and 30 inches deep, it needs storage space and a helper to maneuver
- Higher total harmonic distortion (electrical noise) means sensitive electronics may need an inline filter
Whole-home core: If you have a transfer switch and need reliable dual-fuel power for an entire household, this is the practical balance between cost and capability.
Watch for: Noise-sensitive neighbors and the need to store gasoline — propane runs are shorter (3-4 hours per 20lb tank) so plan fuel logistics for long outages.
2. DuroMax XP13000HXT 13,000-Watt Tri Fuel Portable Generator
Run it on natural gas from your home’s line and never hunt for fuel again.
The XP13000HXT takes everything the XP13000EH does and adds a third fuel — natural gas. That means you can connect it to your home’s gas line with the included 15-foot, 3/4-inch hose and run for days without refueling. The 500 cc engine and push-button start with remote control are identical to the dual-fuel sibling. But the HXT ships with a propane regulator and a natural gas hose, so you truly have every option from day one. One reviewer calculated their installed cost — generator, transfer switch, and gas line connection — compared to a permanent standby unit.
The tri-fuel flexibility is decisive. During an ice storm, one owner reported the generator arrived with shipping damage (dents and a broken motor mount bolt), yet still “started right up and performed flawlessly” on propane. The engine’s 500 cc displacement means even at roughly 60% load it runs small AC, furnace, and appliances simultaneously — the same 13,000-watt peak as the XP13000EH. Customer support is responsive; one buyer had a dead battery replaced quickly. The brand recommends running it 15 minutes per month with a battery maintainer (a device that keeps a battery charged) to guarantee readiness.
There is a catch: natural gas requires a high-BTU line rated at 225,000 BTU/hr (British Thermal Units per hour, a measure of fuel flow). The fuel selector knob is stiff from the start — customers note it needs working in. At 240 lb and 30 inches cubed, this is the heaviest unit on the list. The plastic feet can break during rough delivery, so inspect the crate before signing.
Unlimited-Run Advantage
- Tri-fuel (gas, propane, natural gas) with all hoses included — no extra parts to buy
- Remote start key fob plus push-button electric start for convenience
- 500 cc engine delivers 13,000 peak watts; reputable support from DuroMax
- Reviewers point out reliable whole-home performance during multi-day outages
Before You Install
- Requires a natural gas line with 225,000 BTU/hr capacity — not every home’s line can deliver that
- Stiff fuel selector knob can be frustrating on first few uses
- Heavy (240 lb) and needs a hand truck or two people to move up stairs
Unlimited fuel, unlimited confidence: This is the pick for homeowners who want the lowest long-term fuel cost (natural gas) and do not want to store gasoline or swap propane tanks.
skip it if: Your home lacks a high-capacity natural gas line or you need a unit light enough to haul to a job site.
3. Westinghouse 12500 Peak Watt Dual Fuel Home Backup Portable Generator
Roll it out and fire it up from inside your house with a key fob.
The Westinghouse brings convenience features that the DuroMax units lack: a remote start key fob that lets you start the generator from up to 80 feet away, plus a fuel gauge on the 6.6-gallon tank so you know when to refuel. At 9,500 running watts on gasoline (8,500 on propane) with 12,500 peak watts, it is slightly less powerful than the DuroStar DS13000MX and DuroMax units. But it earns its spot with a compact footprint (27.2 inches long vs 29.75) and a 212.1 lb curb weight that shoppers say is noticeably easier to roll than the 220+ lb competition.
Buyers consistently report that this unit is “rated best by Consumer Reports & Popular Mechanics”. The plug-and-play kit (remote fob, battery charger, oil, funnel, and a tool kit) makes the first-time setup genuinely under five minutes. The 457 cc cast-iron sleeve engine is a proven Westinghouse design. The automatic low-oil and CO shutdown gives you two layers of protection if you are running it near the house. The outlet panel includes two GFCI (ground fault circuit interrupter) 20-amp household receptacles, a 30-amp RV outlet, and a 50-amp transfer switch outlet — every connection you need for whole-home backup.
Two things to note. The manual mentions an Eco switch that does not actually exist — a harmless but confusing omission. Westinghouse factory-tests every unit, so yours may arrive with faint residual oil or fuel odor. The generator loses efficiency above 2,000 feet elevation, though a high-altitude kit solves that.
Fire-and-Forget Features
- Remote start via key fob means no trip to the garage in the storm
- 6.6-gallon tank with fuel gauge — up to 12 hours runtime per tank
- 3-year limited coverage with nationwide service network
- Buyers highlight near-instant assembly and reliable output for well pumps and water heaters
The Fine Print
- 457 cc displacement gives less headroom for simultaneous heavy starts vs the 500 cc competitors
- Manual contains a ghost-feature reference (non-existent Eco switch)
- Wheels and feet arrive unassembled; you must destroy the box to extract the unit
Best for the convenience-minded: If you want to start your generator with a key fob from the back porch and have the most user-friendly unboxing experience, this Westinghouse is the pick.
Consider otherwise if: You need maximum starting power for a large central AC or plan to use the generator above 2,000 feet elevation without modifications.
4. DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable Generator
Identical power to the top pick at a noticeably lower buy-in.
At first glance, the DuroStar DS13000MX is the DuroMax XP13000EH’s mechanical twin — same 500 cc engine, same 13,000 peak watts, same dual-fuel capability, same 50-amp transfer-switch-ready outlet, same CO alert safety feature. The key difference is the price tag: the DuroStar comes in significantly less expensive, making it the strongest value play in the high-wattage dual-fuel segment. One owner called it “the lowest-priced high-wattage generator” they found and reported that it “powers entire home with ease” — specifically a 1.5-ton AC, fridge, stove, microwave, TVs, and water heater with no hiccups.
The DS13000MX weighs 220 lb, the DuroMax XP13000EH weighs 234 lb, and the A-iPower AP10700E weighs 220.5 lb., so it rolls slightly easier on the included wheel kit. The push-button electric start fired up instantly on propane for one reviewer. The smart throttle maintains stable frequency across varying loads. Unlike the DuroMax tri-fuel, the DuroStar sticks to dual-fuel simplicity — gasoline or propane — but the front-facing fuel selector makes switching as simple as rotating a dial.
The biggest downside is noise. Multiple reviewers describe it as “powerful & loud,” and the sound is a low boom that carries through walls. If you have close neighbors, you will need to position it carefully or build a sound-dampening enclosure. The included instructions are illustrated and clear. This is a bonded-neutral generator — meaning the neutral and ground wires are connected inside the unit. So if you connect it to a house transfer switch, you must remove the neutral-to-ground bond wire first. That step is easy but easy to skip if you do not know to look for it.
Max Value for the Watts
- 500 cc dual-fuel engine at the most competitive price point in this list
- All-metal construction with a steel frame — no plastic panels to crack
- Push-button start and remote control included in the box
- Buyers confirm it runs an entire home including a 1.5-ton AC and water heater
Know Before You Buy
- Loud — expect a deep thunder during operation; plan placement carefully
- Bonded neutral requires a simple wiring tweak if used with a house transfer switch
- At 220 lb, you still need a hand truck to move it up steps or over rough ground
Smart choice on a budget: If you need DuroMax-level power but want to keep more cash in your pocket, the DuroStar delivers the same 500 cc platform and 13,000-watt output at a lower cost.
Think twice if: Noise is your primary concern — look at the inverter-based DuroMax XP11000iH instead, or plan on building a sound barrier.
5. A-iPower 10700-Watt Electric Start Portable Generator Gas Powered
Ran 80 hours straight after a hurricane and never coughed.
There is no replacement for real-world track record, and the A-iPower AP10700E has one. One buyer mentioned it ran continuously for 80 hours after Hurricane Irma, powering a fridge, a 12,000 BTU air conditioner, televisions, game consoles, fans, and lamps without a single issue. The 459 cc cast-iron sleeve engine produces 10,700 starting watts and 8,500 running watts on gasoline. That is enough for most homes but falls short of the 13,000-watt class leaders — a trade-off that shows up in the weight: 220.5 lb.
What sets the A-iPower apart from the 500 cc DuroMax units is its automatic idle control. When your appliances cycle off, the engine drops to a lower RPM (revolutions per minute, the speed the engine spins), saving fuel and reducing noise. During that 80-hour hurricane run, the owner noted fuel efficiency of 12-13 hours on 7 gallons — meaning less time refueling in the rain. The control panel includes a digital data center, CO sensor indicator, and three outlet types: two 20-amp GFCI, one 30-amp RV outlet, and a 50-amp transfer-switch-ready outlet.
There are some growing pains. Buyers report that GFI outlets can trip and cause no power output until you reset them — one owner resolved it with a quick phone call to customer support. The unit ships with poor packaging; a few units arrived dented or with cracked batteries. The frequency can run slightly high (60.5-62.5 Hz), which causes some APC UPS units to cycle — though Tripp Lite units handle it fine.
Proven Under Pressure
- Automatic idle control cuts fuel use and noise when loads are light
- Real hurricane survivor story: 80 hours continuous without a break
- Push-button electric start with a 50-amp outlet for transfer switch connection
- Voltage stays tight at 119-121V, so your appliances see stable power
Check the Box
- At 10,700 peak watts, it has less headroom than the 13,000-watt DuroMax units for simultaneous heavy starts
- GFI outlets can trip unexpectedly; know the quick reset procedure
- Packaging has been reported as weak — inspect for shipping damage on arrival
Storm-seasoned choice: If you want a generator that has proven itself through real hurricane conditions and appreciate the fuel efficiency of automatic idle control, the A-iPower earns its place.
Better options exist if: You need tri-fuel capability or the absolute highest peak wattage for a large central air conditioner.
6. DuroMax XP11000iH 11,000-Watt Dual Fuel Portable Digital Inverter Generator
Clean power for your laptop, TV, and refrigerator — all from one quiet box.
The DuroMax XP11000iH is the odd one out in this lineup because it is an inverter generator (a generator that produces a clean sine wave, the same type of power your wall outlet provides). Where the conventional generators in this list can cause a computer UPS to click and cycle, the XP11000iH delivers stable power that your TV, laptop, and medical devices accept without complaint. At 11,000 peak watts and 9,000 running watts on gasoline, it is slightly less powerful than the 13,000-watt dual-fuel units like the DuroMax XP13000EH. But it makes up for it with the inverter’s quiet operation and the idle-down feature — the engine throttles back when loads drop, saving fuel and cutting noise dramatically.
This is also the most expandable generator here. Two XP11000iH units can run in parallel (parallel kit sold separately) to deliver 22,000 peak watts and 18,000 running watts — enough to power two homes. The 459 cc engine uses dual fuel (gasoline or propane). The remote start works from a distance so you do not have to brave the storm to flip the switch. One reviewer called it “phenomenal” and noted the idle-down makes it “more efficient than [their] previous generator.” The unit also includes a CO alert, low-oil shutoff, and a built-in battery tender that keeps the starter battery topped off during storage.
No generator is perfect. The XP11000iH weighs 216 lb, roughly comparable to the A-iPower. But the oil dipstick is famously difficult to access — a frustration multiple owners mention. After-sales support for parts can be slow. A buyer reported waiting 2.5 months for a backordered starting cup, which is unacceptable if the generator is your sole backup. At a premium price point, you pay significantly more for the inverter technology and quieter operation.
Quiet & Clean
- Inverter technology delivers clean sine wave power, safe for laptops and smart TVs
- Idle-down mode reduces fuel consumption and noise when running light loads
- Parallel capability lets you double output to 22,000 peak watts
- Buyers praise the remote start and smooth, quiet operation
Consider the Premium
- 11,000 peak watts is 2,000 less than the conventional 13,000W models — less headroom for big motors
- Parts support can be slow; critical replacement parts have been backordered for months
- Dipstick access is awkward — filling oil requires patience or a funnel extension
For the electronics-heavy home: If you power a home office, medical devices, or expensive AV gear and want a generator that will not buzz or damage them, the inverter-based XP11000iH is worth the upgrade.
Stick with a conventional model if: Maximum peak wattage for a large AC is your priority, or you need guaranteed fast parts availability.
Understanding the Specs
Running Watts vs. Starting Watts
Every generator has two power numbers. Running watts (also called rated watts) is the steady output the generator can maintain for hours. Starting watts (peak watts) is the short burst of power needed to start motor-driven appliances — a refrigerator compressor, a well pump, or an air conditioner. The starting surge can be two to three times the running wattage, so when you add up your loads, the appliance with the biggest surge often decides which generator you need.
Engine Displacement (cc)
The cubic centimeters (cc) of an engine roughly indicates its size and raw power potential. A bigger displacement (like 500 cc vs 457 cc) usually means more torque for spinning the alternator, which translates to better surge capacity for starting heavy loads. But bigger displacement also means more fuel burned and more weight, so the right size depends on whether you expect to run a small AC or a whole-house load.
Dual Fuel vs. Tri Fuel vs. Single Fuel
Single-fuel generators run only on gasoline, which is the most common fuel but degrades over months of storage. Dual-fuel generators let you switch between gasoline and propane — propane stores indefinitely and burns cleaner. Tri-fuel adds natural gas, meaning you can connect to your home’s gas line for unlimited runtime as long as utility service holds. Each additional fuel adds cost but gives you options during a widespread fuel shortage.
Inverter vs. Conventional Generator
A conventional generator produces AC power directly from the alternator, which can have distortion (harmonic distortion) that confuses sensitive electronics. An inverter generator produces AC, converts it to DC, then inverts it back to clean AC — exactly like the power from your wall outlet. Inverters are quieter, more fuel-efficient at light loads, and safe for laptops and TVs, but they cost more and have lower peak output than a comparably sized conventional model.
FAQ
What size generator do I need to run my whole house?
Can I plug a generator directly into a wall outlet?
How long can I run a generator on a full tank of gas?
Do I need an inverter generator for my TV and computer?
What does CO Alert or CO Sensor do?
Can I run my generator in the rain?
What is the difference between a dual-fuel and a tri-fuel generator?
How do I maintain a generator during long periods of non-use?
What is a bonded neutral and why does it matter for a transfer switch?
Can I run a generator on propane permanently?
Final Thoughts: The Verdict
For most people, the emergency generator winner is the DuroMax XP13000EH because it combines 13,000 watts of peak power, dual-fuel flexibility, a 500 cc engine, and a 50-amp transfer-switch-ready outlet at a fair price — covering practically any home’s essential loads. If you want unlimited runtime from your natural gas line and remote start convenience, grab the DuroMax XP13000HXT. And for clean inverter power that protects your electronics with quieter operation, the standout is the DuroMax XP11000iH.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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