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The Best 4Aggregated review·9 sources·updated October 16, 2026·checked September 15, 2026

Best Mini Split Air Conditioners

Top 4 mini split air conditioners reviewed and ranked.

This guide aggregates 9 published reviews across 4 products; the thinnest-sourced pick rests on 1. No publisher printed a score for the top pick — its rating is derived from what reviewers wrote. How we rank.

Verdict is reader-supported. As an Amazon Associate we earn from qualifying purchases. Some links on this page are affiliate links — if you click through and buy, we may earn a small commission at no extra cost to you. Our ratings are sourced from independent publications, not sponsors.
Quick answer

Quilt Ductless Heat Pump (Quilt Mini-Split System) is our top pick for mini split air conditioners — an averaged 4.4/5 across 2 published reviews. Runner-up: Senville LETO 9,000 BTU 115V (SENL-09CD-16) (~$699.99).

Read the Quilt Ductless Heat Pump (Quilt Mini-Split System) review →Buy at quilt.com
At a glance4 products ▾
1Quilt Ductless Heat Pump (Quilt Mini-Split System)Top Pick
2 sourcesall derived
Best for: homeowners without ductwork who want a professionally installed, good-looking heat pump
Buy at quilt.com
2Senville LETO 9,000 BTU 115V (SENL-09CD-16)
1 sourceall derived
$699.99Best for: Handy owners cooling or heating a single room on a 115V circuit who own, or are willing to buy, a vacuum pump, gauges and a flaring tool
$699.99 · Check Price on Amazon
3Della Optima Series 12,000 BTU 115V
1 source
$969.96Best for: Buyers who want a low-cost 115V heat pump for one room and can live without location-based automation.
$969.96 · Check Price on Amazon
4LG Artcool Deluxe KNSAL
Unrated5 sources
$2,637Best for: homeowners in cold climates needing reliable heating and cooling
$2,637 · Buy at hvacdirect.com

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

The full ranking

How we rank →
Quilt Ductless Heat Pump (Quilt Mini-Split System)
#1 · Top Pick
Best for: homeowners without ductwork who want a professionally installed, good-looking heat pump
Quilt Ductless Heat Pump (Quilt Mini-Split System)
2 sourcesall derived
▾Why it's ranked here

The Quilt is a ductless mini-split heat pump with a slim wall-mounted indoor head, outdoor units that serve two or three zones, and dial and smartphone controls, sold and installed only through certified contractors. Wirecutter's overnight test in the Catskills found it kept a room comfortable at single-digit outdoor temperatures and stayed near 50 dB at full fan speed, and it judged the design and controls a clear improvement on typical mini-splits. Gary Cruz, reviewing five heads in his own home after three months, praised the design, app and support but called the roughly $6,500-per-room price steep. It suits homeowners without ductwork who want an installed, good-looking system and can pay a premium; DIY installers and buyers outside Quilt's contractor network should look elsewhere.

Strengths
  • — Kept Wirecutter's test room warm with outdoor temperatures in the single digits °F
  • — Barely reached 50 dB at top fan speed in Wirecutter's noise test
Watch-outs
  • — About $6,500 per room installed, steep next to DIY systems such as MrCool
  • — Only available through a limited network of certified contractors
Buy at quilt.comFull review →vs. Senville LETO 9,000 BTU 115V (SENL-09CD-16) →
Senville LETO 9,000 BTU 115V (SENL-09CD-16)
#2
Best for: Handy owners cooling or heating a single room on a 115V circuit who own, or are willing to buy, a vacuum pump, gauges and a flaring tool
Senville LETO 9,000 BTU 115V (SENL-09CD-16)
1 sourceall derived$699.99as of Oct 16
▾Why it's ranked here

The Senville LETO SENL-09CD-16 is a 9,000 BTU ductless mini-split heat pump that runs on a 115V circuit. In a video review after about three weeks of use in his kitchen, Fix It Scotty called it very quiet, inside and out, and economical, and said it would be a win overall if it lasts. The catch is installation: he describes it as a job for a fairly advanced DIYer, because the line set has to be cut, re-flared and vacuumed down with a pump before the refrigerant is released.

Strengths
  • — Very quiet indoors, and Fix It Scotty says the outdoor unit is about as quiet, without the usual compressor grind
  • — Economical: Fix It Scotty cites a $699 retail price for the unit and put his total at under $800, as he already owned the tools
Watch-outs
  • — Installation needs a fairly advanced DIYer: Fix It Scotty had to trim and re-flare the line set, then vacuum it down with a pump and check for leaks with a gauge set before releasing refrigerant
  • — A dedicated circuit and outdoor disconnect are needed; Fix It Scotty suggests an electrician if you are not comfortable working in your panel
$699.99 · Check Price on AmazonFull review →vs. Quilt Ductless Heat Pump (Quilt Mini-Split System) →
Della Optima Series 12,000 BTU 115V
#3
Best for: Buyers who want a low-cost 115V heat pump for one room and can live without location-based automation.
Della Optima Series 12,000 BTU 115V
1 source$969.96as of Oct 14
▾Why it's ranked here

The Della Optima Series 12,000 BTU is a 115-volt, 23 SEER2 heat pump mini split with Wi-Fi app control, listed by Della for spaces up to 550 square feet. Wired rated it 6 out of 10: its reviewer found it cooled and heated the room well, ran quietly and had a capable app with Alexa and Google Assistant support, but could never get the geofencing feature to work and was quoted $3,600 for professional installation, several times the price of the hardware.

Strengths
  • — Wired found it kept the room properly cooled and heated after a professional install
  • — Quiet in Wired's measurements: 50 dB on turbo and 40 dB on night mode at 3 feet, against 30 dB of ambient sound
Watch-outs
  • — Geofencing never worked for Wired, even after 10 days of troubleshooting with Della support
  • — Wired was quoted $3,600 for professional installation, far more than the unit itself
$969.96 · Check Price on AmazonFull review →vs. Quilt Ductless Heat Pump (Quilt Mini-Split System) →
LG Artcool Deluxe KNSAL
#4
Best for: homeowners in cold climates needing reliable heating and cooling
LG Artcool Deluxe KNSAL
Unrated5 sources$2,637as of Oct 17
▾Why it's ranked here

The LG Artcool Deluxe KNSAL delivers efficient year-round comfort with advanced features like LGRED° Core technology that ensures 100% heating capacity down to -13° F. It includes Dual Vane technology for precise airflow, an Occupancy Sensor for energy savings, and innovations such as Soft Air, Freeze Cleaning, and Auto Clean+. While it offers strong performance in heating and cooling, it has fewer power options compared to some competitors. This unit is ideal for homeowners seeking reliable climate control in moderate to cold climates.

Strengths
  • — 13000 BTU heating capacity with 100% heating capacity at -13° F
  • — Dual Vane technology for precise airflow control
Watch-outs
  • — Limited power options compared to other models (only 2.5 and 3.5 KW available)
$2,637 · Buy at hvacdirect.comFull review →vs. Quilt Ductless Heat Pump (Quilt Mini-Split System) →
Reviews aggregated from
FixitscottyWIREDGlowgreenltdLghvacSupplyhouse

Spec comparison

4 products
vs
SpecQuilt Ductless Heat Pump (Quilt Mini-Split System)Senville LETO 9,000 BTU 115V (SENL-09CD-16)
TypeDuctless mini-split heat pump (heating and cooling)—
Cooling Capacity—9,000 BTU
Voltage—115V, 60Hz, 1Ph
Efficiency—21.5 SEER2 (listing)
Refrigerant—R-454B
Model—SENL-09CD-16
Heating Capacity——

Frequently asked questions

What's the strongest pick among mini split air conditioners?
Quilt Ductless Heat Pump (Quilt Mini-Split System) is the top pick for mini split air conditioners — 4.4/5 averaged from 2 published reviews. The Quilt is a ductless mini-split heat pump with a slim wall-mounted indoor head, outdoor units that serve two or three zones, and dial and smartphone controls, sold and installed only through certified contractors. Wirecutter's overnight test in the Catskills found it kept a room comfortable at single-digit outdoor temperatures and stayed near 50 dB at full fan speed, and it judged the design and controls a clear improvement on typical mini-splits. Gary Cruz, reviewing five heads in his own home after three months, praised the design, app and support but called the roughly $6,500-per-room price steep. It suits homeowners without ductwork who want an installed, good-looking system and can pay a premium; DIY installers and buyers outside Quilt's contractor network should look elsewhere.
How current is this ranking?
This guide was last re-checked in October 2026. Prices, links, and source ratings are re-verified on a rolling basis, and the ranking updates when the underlying scores change.

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