The Catalog · Ductless Air Conditioners
Ductless Air Conditioners.
No Ductwork. No Problem.
A ductless air conditioner — also called a mini split — cools and heats any space without the ductwork central air requires. Perfect for older homes with no existing ducts, additions and conversions, garages, ADUs, sunrooms, finished basements, or any room that runs hot/cold compared to the rest of your house. Each system pairs a slim outdoor condenser with one or more indoor wall-mounted (or ceiling-cassette) heads. Below are our in-stock ductless systems.
In Stock · Ships to All 50 States
In-Stock Ductless Air Conditioners — Ships to All 50 States
MRCOOL® 9k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 115V
Ships nationwide·In stock
MRCOOL® 12k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 115v
Ships nationwide·In stock
MRCOOL® 18k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 230v
Ships nationwide·In stock
MRCOOL® DIY® Series 5th Gen OuttaSight® 18K BTU 230V One-Way Ceiling Cassette
Ships nationwide·In stock
MRCOOL® 24k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 230v
Ships nationwide·In stock
MRCOOL® 36k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 230v
Ships nationwide·In stock
MRCOOL® DIY® Series 5th Gen OuttaSight® 6K BTU 230V One-Way Ceiling Cassette
Ships nationwide·In stock
MRCOOL® DIY® Series 5th Gen OuttaSight® 9K BTU 230V One-Way Ceiling Cassette
Ships nationwide·In stock
MRCOOL® DIY® Series 5th Gen OuttaSight® 12K BTU 230V One-Way Ceiling Cassette
Ships nationwide·In stock
Advantage 5th Gen 9k BTU 115V System
Ships nationwide·In stock
MrCool DIY Easy Pro 9k BTU Ductless Mini-Split Heat Pump System
Ships nationwide·In stock
9K BTU Heat Pump Condenser & Wall Mount Air handler 115 volt 19 SEER with Enhanced WiFi (Works with Alexa, Works with Google Assistant) and 16ft line set install kit
Ships nationwide·In stock
Buying Guide
Why ductless air conditioners win
Ductless ACs deliver central-air comfort without the ductwork — and in most climates they outperform central air on efficiency, cost, and zone control. Here is what to know before buying.
Best fit: homes without existing ductwork
Older homes (pre-1960s) often lack ductwork. Retrofitting central air requires tearing into walls and ceilings — typical cost $10,000-$25,000. Ductless ACs install in a single afternoon and require only a 3-inch hole through one exterior wall. For homes without ducts, ductless is almost always the right answer.
Solve hot/cold rooms in homes that DO have ductwork
Got a bonus room over the garage that runs 10°F warmer in summer? A second-floor bedroom that never gets cool? A finished basement that fights the central system? Adding a single ductless head solves the problem without touching your existing HVAC. Cheaper and faster than rebalancing or extending ductwork.
Per-room temperature control = lower bills
Central air heats and cools the whole house to one temperature, even rooms nobody is using. A ductless system with multiple zones lets you cool only the rooms you occupy. Real-world energy savings: 25-40% lower cooling bills compared to central AC of equivalent BTU.
Heating + cooling in one system
Modern ductless ACs are heat pumps — they cool in summer AND heat in winter using the same equipment. Hyper Heat models work down to -22°F. This eliminates the need for a separate furnace in mild climates, and reduces gas/oil dependency in cold climates.
Single-zone vs multi-zone vs whole-home
Single-zone: one outdoor + one indoor unit, $700-$2,500. Best for adding cooling/heating to one room. Multi-zone: one outdoor + 2-5 indoor units, $2,500-$5,500. Best for whole-floor or whole-house coverage with per-room control. Whole-home ducted heat pump (with traditional ductwork): $4,000-$9,000. Best for replacing existing central air.
At a Glance
Ductless AC vs window AC vs portable AC
How ductless compares to other ductless-adjacent options:
Swipe the table sideways to compare
| Ductless AC | Window AC | Portable AC | |
|---|---|---|---|
| Cooling efficiency (SEER2) | Up to 25 | 10-12 | 6-10 |
| Heating capability | Yes (heat pump) | No | Heater models exist (poor) |
| Permanent install | Yes (mounted) | Seasonal install/remove | No |
| Window blocked | No | Yes | Yes (vent hose) |
| Noise level (indoor) | 25-45 dB (whisper) | 50-60 dB | 50-65 dB |
| Coverage area | Up to 3,000+ sq ft | ~500 sq ft per unit | ~300 sq ft per unit |
| Lifespan | 12-20 years | 5-10 years | 3-7 years |
Frequently Asked
Common questions
Is a ductless air conditioner the same as a mini split?+
Yes — "ductless air conditioner" and "mini split" describe the same product from different angles. Mini split refers to the form factor (split between an outdoor unit and indoor unit, with no ductwork between them). Ductless air conditioner emphasizes that no ductwork is required. Both terms describe the same system.
How much does a ductless air conditioner cost installed?+
A single-zone ductless AC ranges from $700 (DIY) to $4,500 (premium pro install). A whole-house multi-zone system ranges from $3,500 (DIY) to $12,000 (pro install). DIY pre-charged systems save the $1,500-$3,500 in installation labor. Federal 25C tax credits and state rebates can offset $500-$8,000 of the cost.
Will a ductless AC cool my whole house?+
Yes, with a multi-zone system. One outdoor condenser can support 2-5 indoor heads, each in a different room. Sized correctly (20-25 BTU per sq ft), a multi-zone ductless AC cools an entire house with better efficiency and per-room control than central air. For very large homes (3,500+ sq ft), multiple outdoor condensers may be needed.
Can I install a ductless AC myself?+
Yes — MrCool DIY and EasyPro models are designed for homeowner installation. They ship with pre-charged Quick Connect line sets, so no refrigerant handling or HVAC license is needed. You will need to add a dedicated electrical circuit and disconnect box, which most homeowners hire an electrician for ($200-$500).
Does a ductless AC heat as well as cool?+
Yes — modern ductless ACs are heat pumps. They cool in summer and heat in winter using the same equipment. Standard models work down to about 5°F. For colder climates, Hyper Heat models work down to -22°F and qualify for federal/state rebates.
Are ductless ACs noisy?+
No — ductless ACs are among the quietest cooling systems on the market. The indoor unit runs at 25-45 dB (quieter than a whisper at 30 dB). The outdoor unit runs at 50-65 dB depending on size. Compare to a window AC at 50-60 dB indoors and a portable AC at 50-65 dB indoors.