Brand | Champion Power Equipment |
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Wattage | 6250 watts |
Fuel Type | Gasoline |
Power Source | Gas Powered |
Item Weight | 121 Pounds |
Voltage | 240 Volts |
Output Wattage | 6250 Watts |
Special Feature | Portable, Super Quiet, Lightweight |
Included Components | USB Adapter |
Color | Black/Yellow |
Product Dimensions | 26.6"L x 25.6"W x 23.7"H |
Model Name | 6250-Watt |
Engine Type | 4 Stroke |
Tank Volume | 4.2 Gallons |
Engine Displacement | 301 Cubic Centimeters |
Runtime | 12 hours |
Frequency | 60 Hz |
Manufacturer | Champion Power Equipment |
Part Number | 100519 |
Item Weight | 121 pounds |
Country of Origin | China |
Item model number | 100519 |
Is Discontinued By Manufacturer | No |
Size | 301cc |
Style | 6250-Watt + Gas |
Pattern | Inverter |
Item Package Quantity | 1 |
Special Features | Portable, Super Quiet, Lightweight |
Batteries Included? | No |
Batteries Required? | No |
Warranty Description | Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts |
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Champion Power Equipment 100519 6250-Watt Open Frame Inverter with Quiet Technology
Delivery & Support
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Purchase options and add-ons
Brand | Champion Power Equipment |
Wattage | 6250 watts |
Fuel Type | Gasoline |
Power Source | Gas Powered |
Item Weight | 121 Pounds |
Voltage | 240 Volts |
Output Wattage | 6250 Watts |
Special Feature | Portable, Super Quiet, Lightweight |
Included Components | USB Adapter |
Color | Black/Yellow |
About this item
- Quiet technology and extended run time: 69 dba noise level is great for your next project or home backup, with 6250 starting watts and 5000 running watts for up to 12.5 hours run time on gasoline
- Advanced open frame inverter design: 50% quieter and 20% lighter than a traditional Champion 5000-watt generator
- Clean power and economy mode: confidently connect your sensitive electronics and save fuel
- Intelligauge: Monitor voltage, frequency and operating hours with ease; Frequency: 60 Hz
- Champion Support: includes 3-year limited Warranty with free lifetime technical support from dedicated experts
- What's In The Box: Champion 6250 Watt Inverter, Flexible Oil Funnel, Wheel Kit, USB Adapter, Battery Charging Cables
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This Item Champion Power Equipment 100519 6250-Watt Open Frame Inverter with Quiet Technology | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $808.78$808.78 | $572.20$572.20 | -24% $652.50$652.50 List: $861.92 | $617.00$617.00 | -27% $986.74$986.74 List: $1,359.00 | -20% $1,999.00$1,999.00 List: $2,499.00 |
Delivery | Get it as soon as Monday, Apr 1 | Get it as soon as Monday, Apr 1 | Get it as soon as Monday, Apr 1 | Get it as soon as Wednesday, Apr 3 | Get it as soon as Monday, Apr 1 | Get it Wednesday, Apr 3 |
Customer Ratings | ||||||
Maneuverability | 4.4 | 3.8 | 4.6 | 4.6 | 4.4 | — |
Noise level | 3.8 | 3.6 | 3.9 | 4.2 | 4.6 | — |
Portability | 4.2 | 3.5 | 4.3 | 4.7 | — | — |
Value for money | 4.8 | 4.2 | 3.8 | — | — | — |
Tech Support | 4.0 | 4.0 | — | — | 4.1 | — |
Sold By | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
fuel type | Gasoline | Gasoline | Gasoline | Gasoline | Gasoline, Propane (LPG) | electric |
power source | Gas Powered | Fuel Powered | Gas Powered | Fuel Powered | Fuel Powered | Gas Powered |
engine type | 4 Stroke | 4 Stroke | 4 Stroke | 4 Stroke | 4 Stroke | 4 Stroke |
output wattage | 6250 watts | 4250 watts | 4250 watts | — | 4500 watts | 8500 watts |
runtime | 12.5 hours | 22 hours | 22 hours | 11.5 hours | 14 hours | 14 hours |
tank volume | 4.2 gallons | 4 gallons | 4 gallons | 1.1 gallons | 0.6 quarts | 5.3 gallons |
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From the manufacturer
Since 2003 Champion Power Equipment has earned a reputation for designing and producing the finest power equipment. From our headquarters in California Champion has expanded its North American footprint to include facilities in Tennessee, Wisconsin and Canada.
Champion’s product line has expanded to include portable generators, home standby generators, inverter generators, engines, winches and more. With over 2.5 million generators sold, Champion is a leader in the power equipment field.
6250-Watt Open Frame Inverter with Quiet Technology
Power Your Life
Champion's innovative 6250-Watt is 50% quieter and 20% lighter than a traditional 5000-watt generator. With Quiet Technology, Extended Run Time, Economy Mode and Clean Power, this inverter is the cost-effective, advanced power solution you need.
- Starting Wattage: 6250W
- Running Wattage: 3500W
- Engine: 4-stroke 301cc OHV
- Fuel Tank: 4.2 Gallon
- Run Time: Up to 13.5 hr.
- Assembly Required: Yes
- Product Dimensions: 26.6" x 25.6" x 23.7"
- Included Items: USB Adapter, Wheel Kit, Flexible Oil Funnel, Battery Charging Cables, Handle, Vibration Mounts
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Champion SupportChampion Support and our nationwide network of service centers will back up your purchase with a 3-year limited and FREE lifetime technical support. |
Foldaway HandleThe foldaway handle and never-flat tires make transport and storage a cinch. |
Covered OutletsThe covered outlets in this inverter include a 120/240V 30A locking outlet (L14-30R), four 120V 20A GFCI protected household outlets (5-20R) and a 12V DC automotive-style outlet with a dual USB adapter and battery-charging cables. |
IntelligaugeThe Intelligauge monitors voltage, frequency and operating hours, and Cold Start Technology ensures a quick start in cold weather. |
2000-Watt Ultralight Portable Dual Fuel Inverter Generator | 4000-Watt RV Ready DH Series Open Frame Inverter | Champion 4250-Watt Dual Fuel Open Frame Inverter Generator | 4250-Watt RV Ready Open Frame Inverter Generator, Quiet Technology | 4500-Watt Wireless Remote Start Inverter Generator, Quiet Technology | 6250-Watt Open Frame Inverter with Quiet Technology | |
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Customer Reviews |
4.5 out of 5 stars
556
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4.6 out of 5 stars
1,390
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4.6 out of 5 stars
435
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4.6 out of 5 stars
650
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4.6 out of 5 stars
834
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4.5 out of 5 stars
615
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Surge Wattage | 2000W | 4000W | 4250W | 4250W | 4500W | 6250W |
Running Wattage | 1700W | 3500W | 3500W | 3500W | 3500W | 5000W |
Start Type | Recoil | Recoil | Recoil | Recoil | Recoil, Electric, Wireless Remote | Recoil |
Gasoline Capacity | 1.1 Gallon | 2.9 Gallon | 4 Gallon | 4 Gallon | 2.3 Gallon | 4.2 Gallon |
Run Time at 25% Load | Up to 11.5 hr. (Gas), Up to 34 hr. (Propane) | Up to 17 hr. | Up to 22 hr. (Gas), Up to 21 hr. (Propane) | Up to 22 hr. | Up to 14 hr. | Up to 13.5 hr. |
Engine Displacement | 79cc | 224cc | 224cc | 224cc | 212cc | 301cc |
Noise Level at 23 ft. | 53 dB(A) | 64 dB(A) | 64 dB(A) | 64 dB(A) | 61 dB(A) | 69dB(A) |
Parallel Capability | ✓ | ✓ | ✓ | ✓ | ✓ | |
Outlets | Two 120V 20A Household Outlets (5-20R), 12V DC Automotive, Parallel | 120V 30A RV Outlet (TT-30R), Two 120V 20A Household Outlets (5-20R), 12V DC Automotive, Parallel | 120V 30A RV Outlet (TT-30R), Two 120V 20A Household Outlets (5-20R), 12V DC Automotive, Parallel | 120V 30A RV Outlet (TT-30R), Two 120V 20A Household Outlets (5-20R), 12V DC Automotive, Parallel | 120V 30A RV Outlet (TT-30R), Two 120V 20A Household Outlets (5-20R), 12V DC Automotive, Parallel | 120/240V 30A Locking RV Outlet (L14-30R), Four GFCI 120V 20A Household Outlets (5-20R), 12V DC Automotive |
Item Weight | 39 lb. | 82 lb. | 79 lb. | 75 lb. | 90 lb. | 121 lb. |
Product guides and documents
Product information
Technical Details
Additional Information
ASIN | B07KQ2P49Y |
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Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #7,240 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #32 in Outdoor Generators |
Date First Available | November 19, 2018 |
Warranty & Support
Feedback
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Product Description
The Champion Power Equipment 100519 6250-Watt Open Frame Inverter Generator is 50% quieter and 20% lighter than a traditional 5000-watt portable generator. Powering your life takes on a whole new meaning with our feature-packed, innovative technology and design. We cut the noise level in half by integrating Quiet Technology digital inverter components. Then, we created an efficient mechanical design to decrease the overall footprint and weight by 20 percent. A quiet, lightweight, and cost-effective power solution, this inverter is smaller, quieter, lighter…BETTER! The Intelligauge monitors voltage, frequency and operating hours, and Cold Start Technology ensures a quick start in cold weather. The 301cc engine produces 6250 starting watts and 5000 running watts, and runs for 13.5 hours at 25% load when the 4.2-gallon fuel tank is full. From 23 feet, this inverter operates at 69 dBA, about as loud as a vacuum cleaner. This unit holds 1.2-quarts of oil (recommended 10W-30) and features a low oil shut-off sensor and a Quick Drain oil tube for easy changes. Confidently connect your sensitive electronics since our hybrid produces only Clean Power (less than 3% THD). Our Quick Touch Panel offers fast access to controls, while Economy Mode monitors power consumption in real time to reduce electrical load, providing quieter operation, extended engine life and higher fuel economy. The covered outlets in this inverter include a 120/240V 30A locking outlet (L14-30R), four 120V 20A GFCI protected household outlets (5-20R) and a 12V DC automotive-style outlet with a dual USB adapter and battery-charging cables. The foldaway handle and never-flat tires make transport and storage a cinch. Buy this fully assembled EPA certified and CARB compliant inverter with confidence – Champion Support and our nationwide network of service centers will back up your purchase with a 3-year limited warranty and FREE lifetime technical support.
Important information
6250 watts
240 volts
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, ease of assembly, and value of the electricity generator. For example, they mention it performs very well, is extremely efficient on fuel, and is user friendly. That said, they are satisfied with power, and maneuverability. That being said, opinions are mixed on noise and quality.
AI-generated from the text of customer reviews
Customers like the performance of the generator. They say it runs well, is solid, and in perfect working order. Some customers say it performs flawlessly with load tests. They also say it works perfectly for their coffee trailer, is quieter, lighter, and more powerful than the one they have. Overall, customers are satisfied with the performance and functionality of the product.
"...protective, though the box had some dents and gouges The generator inside was perfect...." Read more
"...Sure enough, it ran the hot water heater great, it did get quite a bit louder but thats just how it is when you ask any generator to run at full load..." Read more
"...It's performed flawlessly for 8+ years. Started every time, ran like a swiss watch, maintenance was minimal. Not to mention it was incredibly quiet...." Read more
"...The generator is quieter, lighter and more powerful than the one we currently have and it was a very good price. Can’t beat that." Read more
Customers find the assembly of the electricity generator to be easy. They say it's user-friendly, with minor assembly that can be handled with a metric socket set. They also say the generator comes with Detailed and complete assembly instructions. Customers also mention that the generator starts on the second pull.
"...super easy), the sound level and the ease of use. Good combination of features while keeping the cost reasonable...." Read more
"...Started every time, ran like a swiss watch, maintenance was minimal. Not to mention it was incredibly quiet...." Read more
"...Changed the oil once after the break-in period. It is easy to start...." Read more
"Easy to assemble started in two pulls runs great Powers my whole home" Read more
Customers like the power of the generator. They mention that it provides clean power with less than 3% THD. Some say that it runs smoothly and provides enough power to their entire home. Overall, most are satisfied with the power and reliability of the product.
"...The clean inverter power is great for my UPS units, they work well on it and do not complain...." Read more
"...I connected to my 5KW garage furnace, and it powered that easily. Checked the current draw, it measurd 20.5 Amps @ 242 VAC...." Read more
"...That was kind of surprising. However, I know that this is producing clean power and for the price you can’t beat it." Read more
"...Bottom line; there is no such thing as a quiet, high power, low distortion, low cost generator, so you need to weigh your tradeoffs carefully...." Read more
Customers like the value of the generator. They mention it's superb value for the money, the best budget generator, and a great buy for new homes with high-tech HVAC systems and appliances.
"...Good combination of features while keeping the cost reasonable...." Read more
"...This Champion is a great value, I'd suggest you snatch one up before supplies get tight and prices spike. You know that's gonna happen..." Read more
"...and more powerful than the one we currently have and it was a very good price. Can’t beat that." Read more
"Very useful and good price" Read more
Customers like the maneuverability of the electricity generator. For example, they mention it's light enough to move around easily, has a 240V outlet, and is portable on the wheels. Some say it'll start on the first pull. Overall, most are happy with the product's maneuverability.
"...It's a pretty heavy unit but rolls easily with the included wheel kit and handle...." Read more
"...The generator is quieter, lighter and more powerful than the one we currently have and it was a very good price. Can’t beat that." Read more
"I think this generator has a lot of features. It is very portable and easy to get around on the wheels. Mine started on the first pull...." Read more
"...Those enclosed smaller units are quieter and lighter than the open frame unit, however, they will not produce 240V; only 120V. In my case, I could..." Read more
Customers are satisfied with the efficiency of the generator. They mention that the variable throttle is on point for fuel savings, and the economy mode definitely helped save fuel. The inverter technology reduces its fuel consumption, and it has an almost infinite number of speeds that it will call upon. It adjusts to variable load quickly.
"...Fuel efficiency rating is good. I did several oil changes in the first 5 hours and broke it in slowly. Happy with the quality...." Read more
"...This unit seems to have and almost infinite number of speeds that it will call upon depending on the load placed on the device...." Read more
"...The economy mode definitely helped save fuel over the 24 hours...." Read more
"...it supporting 120/240 VAC and the inverter technology which reduces its fuel consumption, and knocks a few dB of the sound level..." Read more
Customers are mixed about the noise of the electricity generator. Some mention it's much quieter, while others say it'd be a bit noisy.
"...for better sound insulation, don't get me wrong this one's probably pretty quiet for the open frame design and it is a definite buy...." Read more
"...That was no surprise. But it was noticably quieter than the other two open-frame gensets I had owned before (about the same capacity)...." Read more
"...Sure enough, it ran the hot water heater great, it did get quite a bit louder but thats just how it is when you ask any generator to run at full load..." Read more
"...The generator is quieter, lighter and more powerful than the one we currently have and it was a very good price. Can’t beat that." Read more
Customers are mixed about the quality of the generator. Some mention that they are impressed with the build quality, and the generator is solid and reliable. However, others say that it failed after a few years of use, and it seems like typical quality control from China. Some customers also mention that the generator does not have autostart or electric start ability.
"...Pretty nice inverter generator. I bought it shipped and the box was nicely protective, though the box had some dents and gouges The generator inside..." Read more
"...To date I've got a little over 22 hours on it - and it's been completely reliable. I connected to my 5KW garage furnace, and it powered that easily...." Read more
"...Lastly, the item I would like to se fixed is that ther is no master power switch...." Read more
"Best budget generator it runs everything essential in my house perfect stand by emergency generator" Read more
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Sure enough, it ran the hot water heater great, it did get quite a bit louder but thats just how it is when you ask any generator to run at full load. When running with ECO mode on and the water heater breaker OFF, I found the sound level very reasonable, I could not even hear when I was in the front of my house (it was in the backyard) and I have a small tenth of an acre yard (new construction lol). I feel like this generator is probably at the limit of what I would accept sound wise, anything louder is likely to be disruptive to my neighbors as we are all so close together. The clean inverter power is great for my UPS units, they work well on it and do not complain. After I floated the neutral, they kept popping the GFCI when connected directly via extension cord, but the 240 volt twist lock is not GFCI protected, so when connected to my transfer switch, there is no issue. Just something I noticed and wanted to make note of here, if you do convert to floating neutral.
Overall, im happy with the customer service (had a video on how to break neutral bond! super easy), the sound level and the ease of use. Good combination of features while keeping the cost reasonable. We dont all have $5000+ for a Honda EU7000, so im glad this exist for a fraction of the cost. If anything im regretting I didnt get the newer model they (champion) just came out with , but oh well, this works great for my needs.
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5.001/17/2021
The power actually went out less than a month after I got it
Pretty nice inverter generator. I bought it shipped and the box was nicely protective, though the box had some dents and gouges The generator inside was perfect. I took off the shipping pieces, easily mounted the wheels and handle, poured just a half quart or so of fuel, added 5-30 synthetic and test ran it for a half hour or so till empty. Then put it under a cover in the heated garage for safekeeping. I think the 5:30 synthetic is a good choice because it's really not a lot of oil and often in a generator or more oil doesn't get changed very much so it seemed like pretty cheap protection and allows full temperature range operation without having to change the oil. Anyhow less than a month went by and when the power went out I waited 5 minutes for the power to come back on, when it didn't I went out to the garage and then poured in some gas. It's a pretty heavy unit but rolls easily with the included wheel kit and handle. Which brings up an important point, if you're considering a harbor freight generator the wheel kit is extra, on this wonderful inverter generator they include it. There is no electric starter, but I pulled out the manual choke gave it kind of a week pull and it started on that first pull. Keep in mind brand new oil ran just a week or two ago to be broken in and in a warm condition from inside storage, but yeah I was pretty impressed it started right up.
Alsoo harbor freight doesn't have a 240 volt inverter generator. And that's really the main reason I bought this, it's the cheapest 240 inverter generator that Will meet my power needs. Would be nice to have one that was a little bit bigger, but then the fuel consumption would be higher. This runs all our winter loads except the electric heat in the greenhouse. We have a pretty efficient updated home with all LEDs and modern efficient appliances and should be able to run AC in the summer if we are careful not to run the microwave and the toaster at the same time. So here we are 6 hours into our first outage and watching the Bills against the Ravens in good comfort. Initially I filled it up to about 7/8 full, there's a good gauge on top of the tank, I ran it for about 3 hours before adding more fuel at that point it was at halfway on the gauge. Using a sound meter app on my phone I verified that yeah it was about 68 decibels at 20 ft about 83 right up next to it. that may be a lower reading than a loud person talking next to a meter, but the constant drone of an engine is pretty loud. Basically as they say it is as loud as a vacuum cleaner or maybe a little louder. All in all I'm very satisfied is I don't think there's another generator that offers inverter technology and 240 volts with the low distortion in this price range. I'll keep this until champion or someone else makes all these specs available in a unit that's enclosed for better sound insulation, don't get me wrong this one's probably pretty quiet for the open frame design and it is a definite buy. In my opinion compared to what else is on the market you're getting much more than your paying, but it's not everything you could wish for, how are you going to get that at a bargain price?
Reviewed in the United States on January 17, 2021
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5.001/17/2021
The power actually went out less than a month after I got it
Pretty nice inverter generator. I bought it shipped and the box was nicely protective, though the box had some dents and gouges The generator inside was perfect. I took off the shipping pieces, easily mounted the wheels and handle, poured just a half quart or so of fuel, added 5-30 synthetic and test ran it for a half hour or so till empty. Then put it under a cover in the heated garage for safekeeping. I think the 5:30 synthetic is a good choice because it's really not a lot of oil and often in a generator or more oil doesn't get changed very much so it seemed like pretty cheap protection and allows full temperature range operation without having to change the oil. Anyhow less than a month went by and when the power went out I waited 5 minutes for the power to come back on, when it didn't I went out to the garage and then poured in some gas. It's a pretty heavy unit but rolls easily with the included wheel kit and handle. Which brings up an important point, if you're considering a harbor freight generator the wheel kit is extra, on this wonderful inverter generator they include it. There is no electric starter, but I pulled out the manual choke gave it kind of a week pull and it started on that first pull. Keep in mind brand new oil ran just a week or two ago to be broken in and in a warm condition from inside storage, but yeah I was pretty impressed it started right up.
Alsoo harbor freight doesn't have a 240 volt inverter generator. And that's really the main reason I bought this, it's the cheapest 240 inverter generator that Will meet my power needs. Would be nice to have one that was a little bit bigger, but then the fuel consumption would be higher. This runs all our winter loads except the electric heat in the greenhouse. We have a pretty efficient updated home with all LEDs and modern efficient appliances and should be able to run AC in the summer if we are careful not to run the microwave and the toaster at the same time. So here we are 6 hours into our first outage and watching the Bills against the Ravens in good comfort. Initially I filled it up to about 7/8 full, there's a good gauge on top of the tank, I ran it for about 3 hours before adding more fuel at that point it was at halfway on the gauge. Using a sound meter app on my phone I verified that yeah it was about 68 decibels at 20 ft about 83 right up next to it. that may be a lower reading than a loud person talking next to a meter, but the constant drone of an engine is pretty loud. Basically as they say it is as loud as a vacuum cleaner or maybe a little louder. All in all I'm very satisfied is I don't think there's another generator that offers inverter technology and 240 volts with the low distortion in this price range. I'll keep this until champion or someone else makes all these specs available in a unit that's enclosed for better sound insulation, don't get me wrong this one's probably pretty quiet for the open frame design and it is a definite buy. In my opinion compared to what else is on the market you're getting much more than your paying, but it's not everything you could wish for, how are you going to get that at a bargain price?
Unit was well packaged, with no damage. Being no stranger to new engine break-in, I followed Champion's instructions - then went above and beyond. 11 hours (and 3 oil changes) later, I was satisfied the engine was up to snuff. It was louder than my Honda, for sure. That was no surprise. But it was noticably quieter than the other two open-frame gensets I had owned before (about the same capacity). The combination of eco-throttle and auto load governing seemed to work quite well for both noise and fuel consumption. At loads below 30% or so the noise was tolerable - if not "quiet". I'll update more on this later, as well as electrical performance, once I get some real-world hours on it.
As far as features, it's obvious that some nickels and dimes were shaved off to keep the price down. I won't bother listing all the little things I found lacking, but overall I'm satisfied that the critical components are good quality, and don't mind trading some convenience for reliability and a reasonable price. I might not have all the features I'd like, but make no mistake - this is a superb value for the money. Powered everything on our emergency bus, and then some.
Champion Corp. does not build their own generator sets - this is done in China. But realize that there are only a handful of portable gensets still made in the USA - and the number is shrinking. However, Champion does have several research/test facilities located in the US. These facilities are responsible for the engineering specs supplied to the Chinese factories, and I've heard that Champion is pretty strict about how their products are manufactured - including quality control. Indeed, a 3-year warranty seems to confirm this. There's a lot of junk Chinese consumables flooding the market today, but it doesn't look like this is one of them. At least not today.
UPDATE: 9/23/2021
No power outages yet, but I've had time to add on a few more hours to the generator. To date I've got a little over 22 hours on it - and it's been completely reliable. I connected to my 5KW garage furnace, and it powered that easily. Checked the current draw, it measurd 20.5 Amps @ 242 VAC. That works out to about 4961 running Watts (draws a bit more when the blower starts up). Voltage and frequency remained rock steady. After about 45 minutes of steady operation, I felt the inverter's heat sink, and it was only warm - not even close to hot. Great news there. Seems like Champion built in a fair amount of headroom at full capacity, so I'm more confident in the unit's durability now.
Just for giggles, I attempted to power up our 2.5-ton A/C unit. I didn't buy this generator for that purpose, but was curious. Of course it wouldn't start the A/C, but it hung in there for several seconds before tripping the overload fault. Tried 2 more times with the same result. I kinda feel that another 500 Watts of surge capacity might have done the job. But it's good to know that the unit's safety interlocks are working properly. There was no damage to either A/C or generator after this extreme stress test.
Only functional issue I discovered is that the engine has a slight, steady miss at both min and max RPMs. Being no stranger to small engines, this is a classic symptom of a lean mixture condition. Not too surprising, since it has to meet CARB emissions standards. Checked and re-gappd the spark plug, which looked very clean upon removal. Using fresh, clean, no-ethanol fuel - so that's not an issue. Unfortunately, there doesn't seem to be any provision to make small mixture adjustments on the carbureter, which would be the next logical step to smooth the engine out. But I can live with that for the time being, as long as it doesn't get worse.
So I stand by the 4-star rating. I'm confident that any factory defects would have surfaced by now. I might have even considered 5 stars, but hey, I'm downgrading from a Honda - which rocks in every category except price. This Champion is a great value, I'd suggest you snatch one up before supplies get tight and prices spike. You know that's gonna happen...