People who search for Honda generator decibels usually want one number. Honda gives two for every model, and it gives them for all 13 generators it currently sells in the US. That is more than most makers publish. This page lists every one of them, says exactly what Honda's figures mean, and ranks them only where the conditions match.
All figures below come from Honda's US product pages and its 2026 Sound Level Comparison chart, read on October 3, 2026. How Honda compares with other brands is a separate question, and our guide to the quietest generators for camping covers it. For a maker that quotes its portables from 23 feet with no load stated, see our Champion generator decibels page. Yamaha is the closest match to Honda's format: it quotes a quarter load and a rated load figure, and its owner's manuals give the same 7 meters, as our Yamaha generator decibels page sets out model by model.
Our picks are listed above, with full specifications for each.
Each Honda product page has a Noise Level line, such as "57 dB(A) @ rated load 48 dB(A) @ 1/4 load" for the EU2200i. Most pages do not say how far away the reading was taken. Honda's Sound Level Comparison chart, linked from its generator pages, does. Its footnote reads: "Tested in accordance with ISO 9614-2, sound pressure level calculated at 23 Feet (7 meters) using the front plane of the generator (control panel side) per ASHRAE Handbook 2017." It also says "3rd Party Testing by Leading Independent Laboratory."
So every Honda figure is sound pressure, in A-weighted decibels, at 7 meters from the control panel side. The A-weighting tilts the reading toward the frequencies people hear best; our dBA explainer covers it. Seven meters is roughly the far side of a campsite, or the gap between a generator and the neighbor's fence.
The chart then splits the lineup in two. Its inverter models are marked "25% Rated Load-100% Rated Load". Its other models are marked "50% Rated Load-100% Rated Load". That split is why we rank in three lists, not one:
- Rated load is common to all 13, so all 13 can be ranked on it.
- The 25% figure exists only for the seven inverters.
- The 50% figure exists only for the six models that are not inverters.
A 25% figure and a 50% figure are taken at different loads, so we never set one against the other.
Every current Honda generator at rated load
This is the loud end, with each generator delivering its full rated output, at 7 meters. Quietest first:
- EU1000i: 50 dB(A)
- EU2200i, EU2200i Companion, EB2200i and EU3000iS: 57 dB(A)
- EU3200i and EU7000iS: 58 dB(A)
- EB5000: 65 dB(A)
- EM5000SX and EM6500SX: 66 dB(A)
- EG4000 and EB6500: 67 dB(A)
- EB10000: 73 dB(A)
Note the jump. Every inverter sits between 50 and 58 dB(A), and every non-inverter between 65 and 73. Roughly every 10 decibels sounds twice as loud, so the EB10000 at full output, 16 dB(A) above the EU2200i at full output, sounds roughly three times as loud. For where these levels fall among everyday sounds, see our decibel chart.
The inverters at 1/4 load
This is the quiet end for Honda's seven inverter generators, again at 7 meters. Quietest first:
- EU1000i: 42 dB(A)
- EU2200i, EU2200i Companion and EB2200i: 48 dB(A)
- EU3000iS: 50 dB(A)
- EU7000iS: 52 dB(A)
- EU3200i: 54 dB(A)
The gap between the two ends varies more than you might expect. The EU2200i spans 9 dB(A), from 48 to 57. The EU3200i spans only 4, from 54 to 58. A small generator working gently is very quiet, and the larger EU3200i is already fairly busy at a quarter of its output.
The other six at 50% load
These are the models Honda quotes at half load, at 7 meters. Quietest first:
- EB5000 and EM5000SX: 63 dB(A)
- EB6500 and EM6500SX: 64 dB(A)
- EG4000: 66 dB(A)
- EB10000: 71 dB(A)
The half-load figures sit only 1 to 3 dB(A) under the rated-load figures. These engines do not slow down under a light load the way the inverters do, which is the next section.
Eco Throttle, Auto Throttle, and why load matters so much
Honda's inverters use what it calls Eco Throttle (Eco-Throttle on some pages). In Honda's words: "Eco Throttle allows the generator's engine to automatically adjust the engine speed to produce only the power needed for the application in use. Traditional generators have to run at 3600 RPM to produce 60 hertz (cycle) electricity." And on noise: "Eco Throttle also reduces the noise level on our inverter generators. Because the engine is not running at full speed constantly, it is much quieter."
The owner's manuals say when to use it. The EU1000i and EU2200i manuals say the ON position is "Recommended to minimize fuel consumption and further reduce noise levels when less than a full load is applied to the generator." The EU7000iS manual says "when a reduced load or no load is applied". Both add one exception: if high electrical loads are connected at the same time, turn Eco Throttle off to reduce voltage changes.
The EM and EB models have a simpler Auto Throttle system instead. The manuals say it "automatically reduces engine speed when all loads are turned off or disconnected," and recommend it to "further reduce noise levels when no load is applied to the generator." No load, not a light load. That explains why their half-load and rated-load figures are so close. The EG4000 product page lists neither system.
In practice, the cheapest noise reduction Honda offers is sizing. A generator loafing along at a quarter of its output with Eco Throttle on is several decibels quieter than the same generator at full stretch. If the budget is the limit, our guide to the quietest inverter generators under $1,000 explains where Honda's EU2200i sits on price and what the makers below it state with their figures.
Parallel operation, in Honda's words
Honda says "Parallel capability is an additional benefit of inverter technology," and that a special cable can link "two EU1000i, two EU2200i, two EU3000 Handi, or two EU3000is generators together to get as much as double the output." It adds: "you can only parallel two identical units together." The EU7000iS page says two can be paralleled "with an optional kit for up to 14000 watts of power."
The exception is the EU2200i Companion, which Honda says is "designed specifically for parallel operation with another EU2200i," with a built-in 30-amp receptacle. Honda's case for pairing is portability: "extra power when you need it, without having to trade up for a larger, heavier generator."
Honda publishes no noise figure for a pair running together. What its figures do show is that two EU2200i units sharing a load each run lighter, closer to their quiet end, but there are two of them. We do not add the figures together or guess at the result.
What changes the noise between Honda series
- Inverter or not. The EU series and the EB2200i are inverters with Eco Throttle, and all sit at 58 dB(A) or under at rated load. The EM, EB and EG models are not, and none is under 65.
- Size within a series. Within the inverters, rated-load figures rise only from 50 to 58 dB(A) across a jump from 900 to 5,500 rated watts. The quiet-end figures rise faster, from 42 to 54.
- Muffler. Honda credits the EB5000 and EB6500 with a "Special muffler for quieter operation," and says the EB10000's level "is achieved through a large muffler that includes a punching pipe."
Honda's own claims, and how to read them
Honda says several inverters run at "less noise than a normal conversation". Its chart puts normal speech at 60 decibels, and every inverter figure is at or under 58 dB(A), so the claim matches Honda's own scale at 7 meters. Standing next to the generator is a different matter; at a few feet it will be louder than its 7 meter figure.
For the EB10000, Honda says "Quietest in its class!" and "lowest noise rating in its class." We have not checked that claim against other makers, and we do not rank brands here. For home backup, our guide to the quietest home standby generators compares permanent units, which are a different machine from a portable on wheels.
Safety comes before noise
It is tempting to tuck a generator behind a wall to muffle it. The EU2200i manual says "Do not enclose the generator in any structure," and warns that exhaust carbon monoxide "can build up to dangerous levels in enclosed or partly enclosed areas." Every current Honda carries CO-MINDER, which Honda says "automatically shuts down the generator before detected CO levels near the generator become dangerously high." Treat that as a backstop, not as permission to move the generator closer.
We did not measure any of these generators. Every figure on this page is Honda's own, from its US product pages, owner's manuals and Sound Level Comparison chart, read on October 3, 2026, and quoted with the load and distance Honda gives.
