Which is the best sunroom mini split?

For a sunroom mini split, our top pick is Mitsubishi Electric M-Series FS 12k 230V (MSZ-FS12NA / MUZ-FS12NAH). The premium pick where a sunroom must stay usable in winter.

Which matched system has the lowest published equipment price?

For a sunroom mini split, GREE Livo R32 12,000 BTU (230V) has the lowest published equipment price among the matched systems currently shown here at $1,379. Recheck current retailer pages before buying because prices and availability can change.

Use-case guide

Best Mini Splits for a Sunroom

Find mini splits sized around glass, solar gain, and seasonal sunroom use.

Size this room Open finder

Matched systems: 6

Recommended BTU Range

Sizing range

9k to 18k BTU/h

Sunroom frame with sunny exposure and a sunroom load adjustment. The frame models 120 to 200 sq ft; use the calculator CTA for actual dimensions, climate, ceiling height, windows, and insulation.

Calculator

Planning Notes

Glass Swing Loads

Glass can create large cooling and heating swings. Size the room to the sun exposure, not just floor area.

sizing calculator

Winter Use

Three-season rooms used in winter need low-ambient heating data. A cooling-only decision can disappoint as soon as outdoor temperatures drop.

cold-weather performance guide

Dedicated Single Zone

A dedicated single-zone system is often the cleanest fit because the sunroom load does not behave like the rest of the house.

single vs multi-zone guide

Matched Systems

Our top pickRank 1

Mitsubishi Electric / M-Series FS

Mitsubishi Electric M-Series FS 12k 230V (MSZ-FS12NA / MUZ-FS12NAH)

Why it fits

The premium pick where a sunroom must stay usable in winter. It is the only system in this group publishing capacity at temperature rather than just a minimum: 12,300 Btu/h at 47F, 7,560 at 17F, and 11,000 maximum at -13F - which is what matters in the worst-insulated room in the house. Certified SEER2 26.3, HSPF2 10.4 (AHRI; the manufacturer submittal claims 11.1 and we publish the certified figure). Pro install, 230V.

Cooling

12,000BTU/h

Heating

12,300BTU/h

Efficiency

SEER2 26.3 / HSPF2 10.4

Electrical

230V / Professional install

Low ambient

-13F

Noise and controls

Indoor cooling 21-24-29-36-44; heating 21-28-32-38-43 / Wi-Fi

Data completeness: 100%

Verified Jul 2026

49 source records

No current retail listing is available for the top pick.

Rank 2

Senville / AURA

Senville AURA 12k 230V (SENA-12HF)

Why it fits

The strongest published low-ambient heating in the matched set extends sunroom season deep into winter; its efficiency lead pays off in a space with the house's worst envelope.

Cooling

12,000BTU/h

Heating

12,000BTU/h

Efficiency

SEER2 25.4 / HSPF2 10.5

Electrical

230V / Professional install

Low ambient

-22F

Noise and controls

Indoor 47/40/34/24 / Wi-Fi

Data completeness: 88%

Verified Jul 2026

31 source records

Rank 3

GREE / Vireo R32

GREE Vireo R32 12,000 BTU (230V)

Cooling

12,000BTU/h

Heating

12,000BTU/h

Efficiency

SEER2 24.5 / HSPF2 9.5

Electrical

230V / Professional install

Low ambient

-22F

Noise and controls

Indoor 20 - 43 / Wi-Fi

Data completeness: 98%

Verified Jul 2026

53 source records

Rank 4

Mitsubishi Electric / M-Series GS

Mitsubishi Electric M-Series GS Hyper-Heating 12k 230V (MSZ-GS12NA / MUZ-GS12NAHZ)

Cooling

12,000BTU/h

Heating

12,300BTU/h

Efficiency

SEER2 21.7 / HSPF2 9.6

Electrical

230V / Professional install

Low ambient

-13F

Noise and controls

Indoor cooling 19-22-30-37-45; heating 19-22-30-37-43 / Wi-Fi

Data completeness: 100%

Verified Jul 2026

49 source records

Rank 5

GREE / Livo R32

GREE Livo R32 12,000 BTU (230V)

Cooling

12,000BTU/h

Heating

12,000BTU/h

Efficiency

SEER2 19 / HSPF2 8.5

Electrical

230V / Professional install

Low ambient

-13F

Noise and controls

Indoor 27 - 47 / Wi-Fi

Data completeness: 98%

Verified Jul 2026

53 source records

Rank 6

MRCOOL DIY 5th Gen 12k single-zone mini-split system with indoor wall unit, outdoor condenser, and line set

MRCOOL / DIY 5th Generation

MRCOOL DIY 5th Gen 12,000 BTU (115V)

Why it fits

Sunrooms swing hard both directions; 12k of cooling with the 0.90-free glass-load reality favors a size up from the floor area math. 115V wiring matters in additions where the panel run is long.

Cooling

12,000BTU/h

Heating

12,000BTU/h

Efficiency

SEER2 23.5 / HSPF2 10.2

Electrical

115V / DIY-marketed

Low ambient

-13F

Noise and controls

Indoor 43.0/39.5/33.5/24.0/18.0 dB(A)

Data completeness: 88%

Verified Jul 2026

31 source records

Current Retail Options

Some retailer links may earn us a commission at no extra cost; paid relationships never change scores or recommendations. Affiliate disclosure

Paid link

Senville AURA 12k 230V (SENA-12HF)

Check price at Senville

$1,400 / Fresh price - checked Jul 18, 2026

GREE Vireo R32 12,000 BTU (230V)

Check price at HVACDirect

$2,143 / Fresh price - checked Jul 21, 2026

GREE Livo R32 12,000 BTU (230V)

Check price at HVACDirect

$1,379 / Fresh price - checked Jul 21, 2026

MRCOOL DIY 5th Gen 12,000 BTU (115V)

Check price at HVACDirect

$2,359 / Fresh price - checked Jul 18, 2026

Equipment And Installed Cost Ranges

Equipment: $900 to $1,900
DIY installed: $1,670 to $5,015
Pro installed: $3,145 to $8,615

12k

Equipment: $1,000 to $2,400
DIY installed: $1,820 to $5,665
Pro installed: $3,495 to $9,665

18k

Equipment: $1,400 to $3,200
DIY installed: $2,320 to $6,715
Pro installed: $4,295 to $11,515

Common Mistakes

Sizing a sunroom as though glass area does not matter.
Ignoring winter low-ambient performance for three-season use.
Expecting the main house system to control a room with separate solar gain.

Frequently asked questions

Which is the best sunroom mini split?: For a sunroom mini split, our top pick is Mitsubishi Electric M-Series FS 12k 230V (MSZ-FS12NA / MUZ-FS12NAH). The premium pick where a sunroom must stay usable in winter.
Which matched system has the lowest published equipment price?: For a sunroom mini split, GREE Livo R32 12,000 BTU (230V) has the lowest published equipment price among the matched systems currently shown here at $1,379. Recheck current retailer pages before buying because prices and availability can change.

Sources

Calculator sources

Room-sizing calculator methodretrieved 2026-07-18
SplitAtlas installation-cost methodologyretrieved 2026-07-18
SplitAtlas planning-range methodologyretrieved 2026-07-18
SplitAtlas editorial cost estimateretrieved 2026-07-18

System sources

AHRI: AHRI certificate 214779350 for LIV12HP230V1R32AO / LIV12HP230V1R32AHfor GREE Livo R32 12,000 BTU (230V)
Covers cooling capacity, heating capacity, HSPF2, SEER2; retrieved Jul 21, 2026
GREE Comfort: GREE Livo R32 submittal 12MBH 230Vfor GREE Livo R32 12,000 BTU (230V)
Covers voltage range, indoor noise, Wi-Fi support, low-ambient heating; retrieved Jul 21, 2026
HVACDirect: HVACDirect product page GREE Livo R32 12,000 BTU (230V)for GREE Livo R32 12,000 BTU (230V)
Covers price; retrieved Jul 21, 2026
AHRI: AHRI certificate 214813257 for VIR12HP230V1R32AO / VIR12HP230V1R32AHfor GREE Vireo R32 12,000 BTU (230V)
Covers cooling capacity, heating capacity, HSPF2, SEER2; retrieved Jul 21, 2026
GREE Comfort: GREE Vireo R32 submittal 12MBH 230Vfor GREE Vireo R32 12,000 BTU (230V)
Covers voltage range, indoor noise, Wi-Fi support, low-ambient heating; retrieved Jul 21, 2026
HVACDirect: HVACDirect product page GREE Vireo R32 12,000 BTU (230V)for GREE Vireo R32 12,000 BTU (230V)
Covers price; retrieved Jul 21, 2026
HVACDirect: HVACDirect product page DIY-12-HP-WM-115D25-Ofor MRCOOL DIY 5th Gen 12,000 BTU (115V)
Covers low-ambient heating, price; retrieved Jul 18, 2026
MRCOOL: MRCOOL R454B DIY-5 submittalfor MRCOOL DIY 5th Gen 12,000 BTU (115V)
Covers voltage, indoor noise, cooling capacity, heating capacity; retrieved Jul 18, 2026