Air-Con | 24000 BTU | 22 SEER | Mixed Indoor Heads | Multi-Zone Mini Split System | 208-230V | AMSCI4H4S24-3ZONE-ABXEM4H4S09-ABXEM4H4S09-ABXEM4H4S09

This is a 3-zone ductless mini split system for cooling and heating three rooms from one outdoor condenser, without ductwork. It's built for homeowners who need independent temperature control in multiple rooms — additions, converted attics, or multi-room retrofits where running ducts isn't practical.

The AMSCI4H4S24 outdoor condenser is AHRI-certified and Energy Star qualified at 22 SEER, 208-230V, per Air-Con's published Multi Split Series specifications. This listing covers six matched 3-zone indoor combinations — wall-mounted (ABXEM4H4S09), 4-way ceiling cassette (ASLEC4H4S09), and concealed duct (ASLEK4H4S09) heads — so you can match indoor architecture to each room. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.

System Components

• Outdoor Condenser: AMSCI4H4S24 — 24,000 BTU, 22 SEER, 208-230V, Energy Star certified, AHRI certified
• Indoor Head Options (select combination in Options & SKUs table below): ABXEM4H4S09 (9,000 BTU wall mounted), ASLEC4H4S09 (9,000 BTU 4-way ceiling cassette), ASLEK4H4S09 (9,000 BTU concealed duct) — all 208-230V

Installation Requirements & Accessories

• Voltage: 208-230V single-phase for the outdoor unit and each indoor head — NOT compatible with 115V-only circuits
• Line set sizing per indoor head is [NEEDS VERIFICATION] — confirm against the manufacturer spec sheet before purchase
• Line Set Sold Separately — not included with this system
• Professional Installation Required — this is a standard flare-connection system, not a pre-charged DIY kit
• Not compatible with indoor units outside the ABXEM4H4S, ASLEC4H4S, and ASLEK4H4S 09-series listed here for this outdoor unit combination
• Wall sleeve/mounting bracket NOT included for concealed duct or cassette installations

Pro-Installer Tip

On 3-zone flare systems like this one, the branch-box and indoor-head flare connections are the most common source of slow refrigerant leaks — a loose or under-torqued flare on any one of the three zones can bleed charge from the whole system over time, tripping an E1 communication or low-charge fault months after install. Torque every flare joint to spec with a digital torque wrench rather than "feel," and pull the full line set network down below 500 microns with a calibrated vacuum gauge before opening the service valves — a soft 29.9 mmHg reading on an analog gauge is not sufficient on multi-zone runs with this much total line length. This is EPA Section 608 territory: any technician evacuating or charging this system must hold current 608 certification, and proper evacuation is what protects both the compressor's efficiency rating and your refrigerant charge from nuisance callbacks.

Key Benefits

• Inverter-driven outdoor compressor delivers variable speed comfort instead of on/off cycling across all three zones
• Independent zone control — cool or heat one room without running the other two
• Mix-and-match indoor architecture: wall mounted, 4-way ceiling cassette, or concealed duct per room
• 22 SEER outdoor unit is Energy Star certified and AHRI certified
• No ductwork required — reduces installation disruption versus central air retrofits

Technical Table

Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.

Options & SKUs

Compatibility & Fitment

• Compatible: AMSCI4H4S24 outdoor unit matched to 9,000 BTU indoor heads in the ABXEM4H4S, ASLEC4H4S, and ASLEK4H4S 09-series, per the six combinations listed above
• Compatible: dedicated 208-230V single-phase circuits
• Not compatible: 115V-only circuits
• Not included: line set (must be purchased separately, sized per manufacturer specification)
• Not included: wall sleeve or mounting bracket for cassette/concealed-duct installations
• Ceiling cassette joist-bay clearance is [NEEDS VERIFICATION] — confirm with manufacturer specification before framing

FAQ

What breaker size do I need for this system?

The outdoor unit (AMSCI4H4S24) operates on a 208-230V circuit. Exact breaker amperage is [NEEDS VERIFICATION] — refer to the manufacturer nameplate or the Resources tab for the certified breaker size.

Is professional installation required to keep the warranty valid, or is this a true DIY kit?

This is a standard flare-connection multi-zone system, not a DIY pre-charged kit. Installation by a licensed HVAC professional is required to maintain warranty.

Is the line set included, and if not, what size do I need to buy?

Line sets are not included. Exact line set sizes per indoor head are [NEEDS VERIFICATION] — confirm sizing against the manufacturer specifications in the Resources tab before ordering.

Will the ceiling cassette fit between standard 16-inch on-center joists?

This configuration's ceiling cassette (ASLEC4H4S09) is a traditional 4-way cassette. Joist bay clearance requirements are [NEEDS VERIFICATION] — confirm dimensions in the manufacturer specification sheet before framing.

Does this system work in cold climates (low-ambient heating)?

Low-ambient heating performance and minimum operating temperature for this specific model combination are [NEEDS VERIFICATION] — refer to the manufacturer's Resources tab for the certified heating operating range.

Compliance & Warranty

Installation by a licensed HVAC professional is required to maintain warranty. Refrigerant handling on this system must be performed by an EPA Section 608 certified technician. For full warranty terms, registration requirements, and manufacturer documentation, see the "Resources (System Manuals and Warranty)" Tab above.