Get the WEN 56432i if:
- You lift it a lot. It's 52.9 lb against 72.7 lb.
- You want the data meter WEN lists on the 56432i panel.
- 3,600 running watts covers your loads.
Inverter generators
WEN 56432i vs 56477i (2026): which should you buy?
The short answer
Carrying it by hand? 56432i
Need power and outlets? 56477i
It's power and outlets against weight. The 56432i is about 20 lb lighter and carries by hand. WEN lists the same 62 dB at 1/4 load for both.
Best if you'll carry it
Pick the WEN 56432i if
- You lift it a lot. It's 52.9 lb vs 72.7 lb.
- You want the data meter WEN lists on the 56432i panel.
- 3,600 running watts covers your loads.
Best for more power and outlets
Pick the WEN 56477i if
- You need the extra power: 4,000W running and 4,800W starting.
- You run several cords. It has four 5-20R outlets against two.
- You want wheels and a telescoping handle.
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Key specs
2WEN 56477i
spec rows won
spec rows won
1WEN 56432i
spec rows won
spec rows won
12even or
unclear
unclear
Counted from the chart below: rows where one number is clearly better. It's a tally, not an overall rating.
Bold means one number is clearly better. Blank means it's a tie, it's close, the makers measured it differently, or the sources disagree. I only compare run times at the same load when it's fair, since 1/4 load on a bigger generator is more watts.
| WEN 56432i | WEN 56477i | Clearer | |
|---|---|---|---|
| Starting watts (gasoline) | 4,500W | 4,800W | |
| Running watts (gasoline) | 3,600W | 4,000W | WEN 56477i |
| Fuel | Gasoline | Gasoline | |
| Gas tank | 1.27 gal | 1.9 gal | |
| Run time at 1/2 load (gasoline) | 5.6 hr at 1/2 load with Eco mode on; 3.7 hr with it off | 7 hr at 1/2 load | WEN 56477i |
| Noise (maker figure) | 62 dB at 1/4 load | 62 dB at 1/4 load | |
| Weight | 52.9 lb (manual); 53 lb (product page) | 72.7 lb | WEN 56432i |
| Starting method | Recoil | Recoil | |
| Wheels | Not listed | Yes, with a telescoping handle | |
| Outlets | Two 120V 5-20R, one TT-30R RV outlet, one 12V DC, two 5V USB; data meter | Four 120V 5-20R, one TT-30R RV outlet, one 12V DC, two 5V USB | |
| CO shutoff | Not listed by WEN | Unclear: the Amazon listing says it has WEN's Watchdog CO shutoff; WEN's 56477i page and manual do not mention it | |
| Parallel capable | Yes, with WEN's 120V kit | Yes, with an optional kit | |
| Total harmonic distortion (maker) | Under 1.2% at full load | Under 1.2% at full load | |
| Warranty | 3 years limited | 3 years limited | |
| Engine | 181cc | 224cc |
Run time at 1/2 load is marked for the 56477i because it is the bigger generator and still runs longer.
What it can run
Common things people plug in during an outage or at camp, checked against each generator's own gasoline ratings from the chart above: WEN 56432i 3,600W running and 4,500W starting, WEN 56477i 4,000W running and 4,800W starting. I used the top of each range, so a smaller appliance may do better.
- Yes Runs it with room for small things too
- One at a time Runs it, but not alongside the other big items
- Tight Within about 10% of a limit, or only the low end of the range fits. Check your label.
- No Over the limit for a typical one
| Load | Running watts | Starting watts | WEN 56432i | WEN 56477i |
|---|---|---|---|---|
| Full-size refrigerator | 150–400W | 800–1,200W | Yes | Yes |
| Freezer (chest or upright) | 100–500W | 500–1,000W | Yes | Yes |
| Sump pump, 1/3 HP | 500–800W | 1,000–1,600W | Yes | Yes |
| Sump pump, 1/2 HP | 800–1,050W | 1,300–2,150W | Yes | Yes |
| Gas furnace blower (1/2 HP fan) | 300–800W | 800–1,600W | Yes | Yes |
| Window AC, 5,000 BTU | 450–600W | 900–1,200W | Yes | Yes |
| Window AC, 10,000 BTU | 900–1,200W | 1,800–2,400W | Yes | Yes |
| RV rooftop AC, 13,500 BTU | 1,500–2,000W | 2,800–3,500W | One at a time | Yes |
| CPAP (with heated humidifier) | 60–120W | No extra | Yes | Yes |
| Microwave | 600–1,200W | No extra | Yes | Yes |
| Coffee maker† | 600–1,200W | No extra | Yes | Yes |
| Space heater (1,500W setting) | 750–1,500W | No extra | Yes | Yes |
| Well pump, 1 HP‡ | 1,000–2,000W | 2,000–4,000W | One at a time | Yes |
| Circular saw, 7-1/4 in. | 1,200–1,800W | 2,400–3,600W | Yes | Yes |
| TV (32-55 in.) + router/modem | 90–420W | No extra | Yes | Yes |
| Phone/laptop charging | 20–100W | No extra | Yes | Yes |
| Electric water heater | 3,000–4,500W | No extra | No | No |
‡ Check your well pump's voltage. If it runs on 240V, neither unit can power it, since neither lists a 240V outlet.
Running a few things at once
Add up the running watts. Then take the one item with the biggest starting surge and add its starting watts to everything else's running watts. Both totals have to fit.
Outage basics: fridge + furnace blower + 5 LED bulbs + router
Running: 400 + 800 + 75 + 20 = 1,295W (WEN 56432i 36% of 3,600W · WEN 56477i 32% of 4,000W)
Biggest start: furnace blower starting 1,600 + everything else running 400 + 75 + 20 = 2,095W (WEN 56432i 47% of 4,500W · WEN 56477i 44% of 4,800W)
WEN 56432i YesWEN 56477i Yes
Outage plus: fridge + freezer + 1/2 HP sump pump + 5 LED bulbs + router
Running: 400 + 500 + 1,050 + 75 + 20 = 2,045W (WEN 56432i 57% of 3,600W · WEN 56477i 51% of 4,000W)
Biggest start: 1/2 HP sump pump starting 2,150 + everything else running 400 + 500 + 75 + 20 = 3,145W (WEN 56432i 70% of 4,500W · WEN 56477i 66% of 4,800W)
WEN 56432i YesWEN 56477i Yes
RV evening: 13,500 BTU rooftop AC + RV fridge + portable TV + phones
Running: 2,000 + 600 + 150 + 100 = 2,850W (WEN 56432i 79% of 3,600W · WEN 56477i 71% of 4,000W)
Biggest start: 13,500 BTU AC starting 3,500 + everything else running 600 + 150 + 100 = 4,350W (WEN 56432i 97% of 4,500W · WEN 56477i 91% of 4,800W)
WEN 56432i TightWEN 56477i Tight
Notes and sources
These are typical figures. Check the label on your own appliance. It lists watts, or amps you can multiply by 120 to get watts.
Motors need starting watts. Fridges, freezers, pumps, furnace blowers and air conditioners pull a short surge each time they kick on, well above their running watts (see the Starting column). Heaters, coffee makers and chargers don't.
Running several loads adds up. If two motors start in the same second, both surges stack. Honda's own advice is to start the big ones one at a time.
RV air conditioners: both have the starting watts for a 13,500 BTU unit on paper. A soft starter still eases the start: Micro-Air, which makes the EasyStart, says it cuts startup current by up to 75%, which leaves more room for other loads.
Outlets: Neither generator lists a 240V outlet in the chart above, so anything that needs 240V is out. Check your appliance's label. Both have a 30A RV outlet (TT-30R). Running watts still cap the total, whichever outlet you use.
Water heaters: If your water heater runs on 240V, neither unit can power it, since neither lists a 240V outlet. On watts alone it would be "No" on the WEN 56432i and "Tight" on the WEN 56477i.
Well pumps: Check your well pump's voltage. If it runs on 240V, neither unit can power it, since neither lists a 240V outlet.
Load watts: Champion Power Equipment, Generator Wattage Chart. It covers appliances, not generators. †Coffee maker: 600W for a 4-cup maker from Honda's wattage guide, and 1,200W from Generac's wattage worksheet. Microwave: the wattage on the box is usually cooking power. Honda's guide lists a 1,000W microwave at 1,500W from the outlet, which is "Yes" on both. None of these charts list an 8,000 BTU window AC, so it falls between the 5,000 and 10,000 BTU rows. Start-up advice: Honda. Soft starter: Micro-Air.
Carbon monoxide
One thing before the details: both burn gasoline, so both put out carbon monoxide. WEN doesn't list a CO shutoff for the 56432i, and for the 56477i the sources disagree, so treat both as having none. Keep them outside, well away from doors, windows and vents, with the exhaust pointed away from the house. Never in a garage, shed or on a porch.
Both are WEN gas inverters with a TT-30R RV outlet, a 12V socket and two USB ports.
Who should pick which
Get the WEN 56477i if:
- You need the extra power: 4,000W running and 4,800W starting.
- You run several cords. It has four 5-20R outlets against two.
- You want wheels and a telescoping handle.
- You want the longer half-load run time WEN lists: 7 hours on 1.9 gallons, against 5.6 hours on 1.27 gallons with Eco mode.
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Skip it if
Skip the 56432i
if you need more than two household outlets without a power strip.
Skip the 56477i
if it has to fit behind a car seat or be carried up steps.
What owners report
These points come from owners posting on Reddit, owner forums and retailer reviews, not from my own testing. A point is listed only when at least three separate owners of this exact model said it. Individual units vary.
WEN 56477i
- Many owners call it quiet, though a few found it louder than expected or louder than smaller WEN models.
- Owners say it starts easily, usually in one to three pulls; one says it's occasionally hard to restart after running a while.
- RV owners report it runs their camper air conditioner.
Sources: Amazon reviews, Reddit, iRV2
Questions about this pair
Which one is quieter?
Neither. WEN lists 62 dB at 1/4 load for both.
Does either one have a CO shutoff?
WEN doesn't list one for the 56432i. For the 56477i, the sources disagree: the Amazon listing says it has WEN's Watchdog, and WEN's own page and manual don't mention it.
Which one runs longer?
WEN gives 7 hours at 1/2 load for the 56477i and 5.6 hours (Eco mode on) for the 56432i. The 56477i's half load is more watts, so it's ahead on both counts.
Can I run two in parallel?
Yes. WEN sells a parallel kit, and for the 56432i it names its 120V kit.
Spec notes
Where the sources disagree on a spec:
- WEN 56432i: WEN also sells a 56432iX with its CO Watchdog shutoff. That is a different model and is not the one linked.
- WEN 56477i CO shutoff: the Amazon listing says it has WEN's Watchdog CO shutdown sensor. WEN's own 56477i page and its November 2023 manual do not mention one. This page does not count it either way.
Specs are from WEN, checked October 8, 2026. Any line marked "Amazon listing" is not a maker figure.
Related comparisons
By Mike E. · Last checked October 8, 2026 · Based on manufacturer specs. Lines marked "Amazon listing" are from Amazon, not the maker.