An 18,000-BTU ductless mini split is the closest match to a 1.5-ton split AC in this selection. The DELLA Umbra and ARLIME are single-zone options for one larger room, while DELLA’s 18,000-BTU two-zone system is designed to serve two spaces. The 28,000-BTU three-zone DELLA is a larger-capacity alternative, not a 1.5-ton system. The supplied products include four relevant mini splits; the other listings are unrelated accessories or equipment.
| Product | Best suited for | Listed capacity and coverage |
|---|---|---|
| DELLA Umbra 18,000 BTU | One room with smart features | Up to 1,000 sq. ft. |
| ARLIME 18,000 BTU | One room with multiple operating modes | Up to 1,250 sq. ft. |
| DELLA 18,000 BTU two-zone | Two spaces with separate controls | Two 7,000-BTU indoor units; listing says up to 600 sq. ft. |
| DELLA 28,000 BTU three-zone | Three rooms needing separate controls | Up to 1,350 sq. ft. |
DELLA Umbra 18,000 BTU Mini Split
Best for: Buyers who want a single-zone, 1.5-ton-class system with heating, cooling, and Alexa support. The manufacturer lists 18,000 BTU capacity and coverage up to 1,000 square feet, along with 19 SEER2 and R32 refrigerant.
Features include 4D airflow, an I Feel remote sensor, a 24-hour timer, sleep and energy-saving modes, and dry mode for dehumidifying. Heating is listed for environments as low as 19°F. These functions and the stated capacity make it a relevant option for a larger room or open area.
Limitation: Professional installation is required, and the line set must be vacuumed. The listing also says refrigerant levels need adjustment if line-set length changes.
ARLIME 18,000 BTU Mini Split
Best for: Buyers looking for an 18,000-BTU single-zone heat-pump system with several comfort modes. ARLIME lists coverage up to 1,250 square feet, 19 SEER2, 230V operation, and Alexa support.
Its five operating modes are automatic, cooling, drying, heating, and fan. The listed controls also include sleep, ECO, I-Feel, and self-cleaning modes, plus a timer adjustable from 0.5 to 24 hours. The backlit remote and low-noise operation are relevant for bedrooms, offices, and living spaces.
Limitation: The stated coverage is a manufacturer specification, not a guarantee that the unit will suit every home. Check room layout, insulation, climate, and installation requirements before choosing capacity.
DELLA 18,000 BTU Two-Zone System
Best for: Buyers who need temperature control in two rooms rather than one. The system has two 7,000-BTU indoor units, Wi-Fi and voice control, and a listed 22 SEER2 rating. Its listing identifies the total system as 18,000 BTU and gives coverage up to 600 square feet.
Controls include the DELLA app, Alexa or Google Home voice control, a remote, and a geolocation function. The system offers heating, cooling, dry, and auto modes, along with 4D airflow, a timer, sleep mode, and energy-saving mode. Choose it when separate indoor units are more useful than a single wall-mounted air handler.
Limitation: The listing says this model does not perform its self-cleaning function, even though the option may appear on the display. Its stated coverage is smaller than the two single-zone 18,000-BTU options here.
DELLA 28,000 BTU Three-Zone System
Best for: Buyers cooling or heating three rooms with individual temperature controls. This system includes 9,000-, 9,000-, and 12,000-BTU indoor units and a 28,000-BTU outdoor unit. The listing states coverage up to 1,350 square feet, 20 SEER2, Wi-Fi, and Alexa compatibility.
Separate controllers allow room-by-room adjustment. The product listing also specifies 208–230V operation, inverter technology, a heat pump, and included installation kits and line sets. This is a useful multi-room comparison, but it is a larger system than a 1.5-ton, 18,000-BTU model.
Limitation: It is not a direct 1.5-ton replacement. Professional installation and line-set vacuuming are required, and the listing says the self-cleaning function is not supported.
Buying Guide: How To Choose A 1.5-Ton Split AC
What does 1.5 ton mean for a split AC?
In these listings, 1.5 ton corresponds to 18,000 BTU. The DELLA Umbra and ARLIME are single-zone 18,000-BTU options. Match the capacity to the room and home conditions rather than relying only on a square-foot estimate.
Should you choose a single-zone or multi-zone system?
Choose a single-zone system when one indoor unit can serve the intended space. A multi-zone model has indoor units for separate rooms, which can provide individual controls. Compare the indoor-unit capacities and the manufacturer’s coverage statement; a larger total capacity does not automatically make a system a better fit.
Which features should you compare?
Compare the listed SEER2 rating, voltage, heating capability, operating modes, smart controls, and remote-sensor features. Coverage claims vary across these products. Room size, ceiling height, sunlight, insulation, and local climate can affect actual comfort, so seek a qualified sizing assessment when uncertain.
Does a mini split need professional installation?
Installation requirements vary by product, but the DELLA listings explicitly require professional installation and line-set vacuuming. Confirm electrical requirements and installation details before purchase. Do not assume that an included installation kit makes a system a do-it-yourself project.
Frequently Asked Questions
Is an 18,000-BTU mini split the same as 1.5 ton?
These products are marketed as 1.5-ton systems at 18,000 BTU. Check the model’s capacity and specifications when comparing equipment.
Which listed system is best for one large room?
The DELLA Umbra or ARLIME is a single-zone 18,000-BTU option. Their listed coverage differs, so compare those claims with the room and home conditions.
Can a 1.5-ton mini split heat as well as cool?
The listed 18,000-BTU DELLA Umbra, ARLIME, and DELLA two-zone systems include heat-pump heating as well as cooling. Check each product’s operating-temperature details for your climate.
Is the 28,000-BTU DELLA a 1.5-ton system?
No. Its listed capacity is 28,000 BTU, making it a larger-capacity, three-zone alternative rather than a direct 1.5-ton match.