What does a GREE submittal say about noise?
A GREE submittal prints one indoor range and one outdoor figure per system, in dB(A) sound pressure, such as "20 - 41" and 52 for the Vireo 09.
The indoor row is headed "Sound Pressure Level (Min - Max)"; the outdoor row carries one number with no range. The same sheet lists "Multi Fan Speeds", seven on Vireo, Envo, Sapphire and ZENO heads and six on Livo. It does not say which speed produced the minimum or the maximum, whether the figure is cooling or heating, or how far away the microphone stood. Read the minimum as the head's softest published level and the maximum as its loudest.
None of those blanks are filled in the brochures either, so a GREE figure lines up safely only with another GREE figure from the same row. Our guide to comparing decibel ratings explains why distance and room matter when brands are mixed.
Which GREE mini-splits are current in the US?
GREE's current US mini-splits are five R32 single-zone wall series, Livo, Vireo, Envo, Sapphire and ZENO, plus Multi R32 and Multi ECO R32 condensers and six All Match R32 indoor styles.
Those R32 systems are the ones ranked on this page. GREE's single-zone page also still shows four R410A systems, Livo GEN4, Vireo GEN3, Vireo+ Ultra and the 27 SEER2 Sapphire, with submittals dated 2023 and 2024. They use the older refrigerant, so they sit in a section of their own further down.
Each R32 series covers 9,000 to 24,000 BTU. Livo adds 30,000 and 36,000 BTU, and Livo, Vireo and ZENO also sell their two smallest sizes in 115V. Envo and Sapphire are 230V only.
What is the quietest GREE mini-split?
The quietest GREE mini-splits at the bottom of their range are the Vireo R32 and Envo R32 at 9,000 and 12,000 BTU, both listing 20 dB(A) as their minimum.
Here is every R32 wall unit's minimum, by size, from GREE's submittals.
- 9,000 BTU: Vireo (230V and 115V) and Envo 20; ZENO (230V and 115V) and Sapphire 23; Livo (230V and 115V) 24
- 12,000 BTU: Vireo (230V and 115V) and Envo 20; ZENO (230V and 115V) 22; Livo (230V and 115V) and Sapphire 27
- 18,000 BTU: Vireo 27; Envo 29; ZENO 33; Livo 34; Sapphire 35
- 24,000 BTU: Envo 30; Vireo 34; Livo, Sapphire and ZENO 36
- 30,000 and 36,000 BTU: Livo 36
The Vireo and Envo print identical ranges at 9,000 and 12,000 BTU, so at those sizes noise does not separate them and features decide. The Envo takes an optional fresh air kit; the Vireo comes in 115V.
How loud is a GREE mini-split on its top fan speed?
GREE's R32 wall units list a maximum of 40 to 53 dB(A), and the ZENO has the lowest top figure at both 9,000 and 12,000 BTU. These are the "Max" ends of the submittal ranges, compared only with each other.
- 9,000 BTU: ZENO (230V and 115V) 40; Vireo (230V and 115V), Envo and Livo 230V 41; Sapphire 42; Livo 115V 43
- 12,000 BTU: ZENO (230V and 115V) 42; Vireo (230V and 115V), Envo and Sapphire 43; Livo (230V and 115V) 47
- 18,000 BTU: Vireo and Envo 48; Sapphire 49; ZENO 51; Livo 53
- 24,000 BTU: Envo 48; Livo and ZENO 51; Vireo 52; Sapphire 53
- 30,000 and 36,000 BTU: Livo 52
At 24,000 BTU the Vireo, Envo and Sapphire are rated 22,000 Btu/h in cooling, while the Livo and ZENO are rated 24,000, so the first three reach their figures while rated to move less heat. A head that will run hard on hot afternoons should be judged on this list more than on the minimums above.
How loud is a GREE outdoor unit?
GREE's single-zone R32 condensers list 51 to 62 dB(A), and the Livo is quietest or tied for quietest at every size, with the ZENO level with it everywhere but 18,000 BTU. Condenser figures are ranked here only against other condensers.
- 9,000 BTU: Livo (230V and 115V) and ZENO (230V and 115V) 51; Vireo (230V and 115V) and Envo 52; Sapphire 56
- 12,000 BTU: Livo, Vireo, Envo and ZENO 52; Sapphire 55
- 18,000 BTU: Livo 57; ZENO 58; Vireo, Envo and Sapphire 59
- 24,000 BTU: Livo, Vireo and ZENO 58; Envo 61; Sapphire 62
- 30,000 and 36,000 BTU: Livo 62
The multi-zone condensers list, from their own submittals: Multi R32 MUL18HP230V1R32AO and MUL19HP230V1R32AO 51; MUL24 55; MUL30 58; MUL36, MUL42, MUL48 and MUL60 59. Multi ECO R32 MUE18 52; MUE24 and MUE30 55; MUE36 60; MUE42 61.
The Sapphire's efficiency comes with the loudest condenser in three of the four sizes it comes in. If the unit will sit under a window or near a property line, that is worth more weight than its SEER2.
Is the GREE Vireo or Livo quieter?
The Vireo R32 has the lower indoor minimum at every size both series share, while the Livo R32 condenser lists the same or less.
At 12,000 BTU the Vireo's range is 20 - 43 dB(A) against the Livo's 27 - 47.
At 9,000 BTU the gap indoors is four dB(A) at the bottom, 20 against 24, and nil at the top on 230V. At 18,000 BTU the Livo's 34 - 53 is the loudest R32 head at that size, while its condenser, at 57, is two quieter than the Vireo's 59. At 24,000 BTU the Livo's top figure, 51, is one under the Vireo's.
The Livo is the series that goes beyond 24,000 BTU and runs six fan speeds; the Vireo has seven and heats down to -22°F, against -13°F for the Livo. For a bedroom the Vireo's lower minimum counts for more; for a condenser by a neighbor's window, the Livo 18 has the edge.
Does a bigger GREE mini-split make more noise?
Yes, size moves a GREE figure more than series does. Every R32 line's minimum climbs between 12,000 and 24,000 BTU, from 20 to 30 on the Envo and from 27 to 36 on the Livo and Sapphire.
The jump is steepest past 12,000 BTU. The Vireo reads 20 at 12,000 BTU, then 27 at 18,000 and 34 at 24,000; the ZENO goes from 22 to 33. Condensers follow the same path, with the Sapphire rising from 55 at 12,000 BTU to 62 at 24,000.
The practical answer is to size each head to its room rather than the house. Two 9,000 or 12,000 BTU heads on a multi-zone system, or two single-zone pairs, will list lower minimums than one 24,000 BTU head trying to cover both rooms.
How quiet are GREE's All Match cassette, duct and floor units?
GREE's All Match R32 indoor units list minimums from 23 dB(A), on the 9,000 BTU mini console, to 48 on the floor-standing unit.
Each style is compared only within its own type, since a cassette or ducted head sends sound into a room differently from a wall unit.
These are the single-zone submittal ranges, Min - Max in dB(A), for each style and size:
- 360° cassette (CAS): 9,000 BTU 27 - 40; 12,000 29 - 41; 18,000 28 - 44; 24,000 38 - 44; 30,000 38 - 51; 36,000 38 - 52
- One-way cassette (OWC): 9,000 BTU 28 - 37; 12,000 28 - 41; 18,000 32 - 43; 20,000 36 - 46
- Slim duct (DUC): 9,000 BTU 25 - 38; 12,000 25 - 39; 18,000 25 - 41; 24,000 27 - 43; 30,000 37 - 44; 36,000 39 - 45
- Floor ceiling (FLR): 9,000 BTU 26 - 38; 12,000 25 - 40; 18,000 34 - 49; 24,000 37 - 52; 30,000 43 - 53; 36,000 44 - 54
- Mini console (CON): 9,000 BTU 23 - 40; 12,000 25 - 45; 18,000 32 - 47
- Floor standing (FSU): 36,000 BTU 48 - 54
In single-zone use the heads up to 24,000 BTU pair with a Vireo, Envo or Sapphire R32 condenser, and the submittal lists each pairing's figure, 52, 52 or 56 dB(A) at 9,000 BTU. The 30,000 and 36,000 BTU heads pair with Livo condensers, at 62. The slim duct's figure is at the unit, and the ductwork decides how much reaches the room.
Which GREE document should you trust for decibels?
GREE's submittals are the documents to rank on, because each covers one model pair and carries a catalog date.
Service manuals list a figure per fan step, but they cover several model codes at once and do not always agree with the submittal.
The Sapphire R32 shows the gap most clearly. Its service manual gives the SAP09HP230V1R32AH a cooling sound pressure of "42/41/40/38/33/28/23/19" dB(A), eight steps ending at 19, while the submittal and brochure give "23 - 42". The 12,000 BTU head reads "43/42/40/39/33/29/27/19" in the manual against "27- 43" on the submittal.
GREE's remote lists the fan steps as Low, Low-Medium, Medium, Medium-High, High and Turbo, plus a Quiet speed, but the manual never matches those names to the figures. We used the submittal ranges throughout and quote the 19 only here.
What about GREE's R410A Sapphire, Livo and Vireo systems?
GREE's R410A wall systems still on its single-zone page list indoor ranges from 19 to 56 dB(A), with the 9,000 BTU Sapphire SAP09HP230V1AH lowest at 19 - 46.
Their submittals date from 2023 and 2024, so they are grouped here, apart from the R32 rankings.
- Sapphire (27 SEER2): 9,000 BTU 19 - 46, outdoor 57; 12,000 22 - 49, outdoor 53; 18,000 34 - 51, outdoor 59; 24,000 34 - 54, outdoor 59
- Livo GEN4: 9,000 BTU 26 - 41, outdoor 51; 12,000 (230V) 27 - 47, outdoor 52; 18,000 32 - 50, outdoor 57; 24,000 36 - 51, outdoor 57; 30,000 and 36,000 37 - 56, outdoor 62
- Vireo GEN3 with BO condensers: 9,000 BTU 25 - 40, outdoor 52; 12,000 27 - 43, outdoor 52; 18,000 29 - 49, outdoor 59; 24,000 34 - 52, outdoor 62
- Vireo+ Ultra: 30,000 BTU 36 - 55, outdoor 61; 36,000 36 - 55, outdoor 63
The R410A Sapphire's 19 is the lowest minimum on any current GREE wall unit submittal, but its 46 at the top is five above the R32 Vireo 09. GREE's older Vireo GEN3 sheets, paired with AO condensers, print slightly different numbers at 18,000 and 24,000 BTU. Ask the installer which refrigerant a quote is for before comparing it with the R32 figures above.
Does a GREE mini-split have a quiet mode?
Yes, GREE wall units have a Quiet fan speed on the remote, and their submittals list "Quiet Mode" among the features. GREE prints no separate decibel figure for it.
The service manuals also describe a night setting for the condenser: "Under cooling or heating mode, when turning on sleep mode and turn to low speed or quiet notch, the outdoor unit would enter into night mode." The same manuals note that the outdoor fan slows "by the command of the indoor/outdoor unit quiet operation." If the room then feels short of cooling or heat, the manual says to pick another fan speed or press Sleep to leave night mode.
Why is my GREE mini-split making noise?
A GREE mini-split can make normal noises at start and stop, from parts expanding and refrigerant moving, according to the troubleshooting table in its service manuals. Rattles, buzzing coils and a shaking compressor are listed as faults for a technician.
The table calls a popping sound when the unit turns on or off normal, writing it as "PAPA" and saying the "Abnormal sound will disappear after a few minutes." It gives the same verdict for a "Water-running sound", caused by refrigerant flowing inside.
Faults it lists include loose parts or foreign objects touching inside the indoor or outdoor unit, an electromagnetic sound from the valve coil during heating, and an "Abnormal shake of compressor". For those, GREE's fixes run from tightening screws and adding damping material to replacing the coil or compressor, which is work for a GREE contractor.
