This is a 2-zone ductless mini split system: one outdoor condenser (AMSCI4H4S24) paired with two indoor heads, cooling and heating two separate rooms from a single outdoor unit. It's built for homeowners who need independent comfort control in two spaces — for example, a bedroom and a home office — without running new ductwork.
The AMSCI4H4S24 outdoor condenser is rated at 24,000 BTU/h with 22 SEER2 efficiency and is AHRI-certified and Energy Star certified, per Air-Con's published Multi Split Series specifications. This listing's default configuration pairs it with two ABXEM4H4S09 wall-mounted indoor heads — a surface-mounted architecture, not a joist-dependent cassette, so no ceiling framing considerations apply. 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/h, 22 SEER2, 208-230V, AHRI-certified, Energy Star certified
- Indoor Head 1 (default configuration): ABXEM4H4S09 — 9,000 BTU/h, wall-mounted
- Indoor Head 2 (default configuration): ABXEM4H4S09 — 9,000 BTU/h, wall-mounted
- Alternate indoor head configurations available — see Options & SKUs table below
Installation Requirements & Accessories
- Voltage: 208-230V. Not compatible with 115V-only circuits.
- Line set sold separately for all zones — not included with any variant of this system.
- Wall-mounting brackets for indoor heads not included.
- Professional installation required — this is a standard flare-connection system, not a pre-charged DIY kit.
- Not a listed match for indoor units outside the AMSCI4H4S24 compatibility table (e.g., ASLEK4H4S18, ASLEK4H4S24, ABXEM4H4S18, ABXEM4H4S24, ASLEC4H4S18, ASLEC4H4S24 are not offered in this listing's variants).
Pro-Installer Tip
Flare connections on multi-zone branch lines are a common leak point, especially where installers over- or under-torque the nut trying to seat a stubborn joint by feel. An under-torqued flare seeps refrigerant slowly and eventually trips a low-charge fault or "E1" style communication/protection code as the system's EEV struggles to compensate for lost charge. Use an Eccentric Flaring Tool to form the flare and a Digital Torque Wrench set to the manufacturer's spec to seat each connection — do not rely on "snug plus a quarter turn." Pull the system down below 500 microns with a calibrated vacuum gauge before charging, and log the hold test. This is standard EPA Section 608 practice for any technician handling refrigerant, and it's what keeps the rated 22 SEER2 efficiency intact over the life of the system.
Key Benefits
- Inverter-driven outdoor compressor delivers variable-speed comfort instead of blunt on/off cycling
- Two independently controlled zones from a single outdoor condenser
- 22 SEER2 rated efficiency on the AMSCI4H4S24 outdoor unit
- AHRI-certified and Energy Star certified system matches
- Wall-mounted indoor heads install without ceiling or joist modifications
- Multiple indoor head combinations available (wall, cassette, and ducted options) under this outdoor unit
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Outdoor Unit Model | AMSCI4H4S24 | — |
| Outdoor Unit Cooling Capacity | 24,000 | BTU/h |
| SEER2 | 22 | — |
| Voltage | 208-230 | V |
| Zone Count | 2 | — |
| Indoor Unit Architecture (default config) | Wall Mounted | — |
| Indoor Head 1 Capacity (default config) | 9,000 | BTU/h |
| Indoor Head 2 Capacity (default config) | 9,000 | BTU/h |
| DIY Status | No — Professional Installation Required | — |
| Energy Star Certified | Yes | — |
| AHRI Certified | Yes — Certificate Available | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Options & SKUs
| Variant Title | SKU | Price (USD) |
|---|---|---|
| ABXEM4H4S09 + ABXEM4H4S09 | AMSCI4H4S24-2ZONE-ABXEM4H4S09-ABXEM4H4S09 | 2397.00 |
| ABXEM4H4S09 + ABXEM4H4S12 | AMSCI4H4S24-2ZONE-ABXEM4H4S09-ABXEM4H4S12 | 2436.00 |
| ABXEM4H4S09 + ASLEC4H4S09 | AMSCI4H4S24-2ZONE-ABXEM4H4S09-ASLEC4H4S09 | 2622.00 |
| ABXEM4H4S12 + ABXEM4H4S12 | AMSCI4H4S24-2ZONE-ABXEM4H4S12-ABXEM4H4S12 | 2303.00 |
| ASLEC4H4S12 + ABXEM4H4S12 | AMSCI4H4S24-2ZONE-ASLEC4H4S12-ABXEM4H4S12 | 2806.00 |
| ASLEK4H4S12 + ASLEK4H4S12 | AMSCI4H4S24-2ZONE-ASLEK4H4S12-ASLEK4H4S12 | 2369.00 |
Compatibility & Fitment
- Compatible: AMSCI4H4S24 outdoor condenser matched with the indoor head combinations listed in the Options & SKUs table above (ABXEM4H4S09, ABXEM4H4S12, ASLEC4H4S09, ASLEC4H4S12, ASLEK4H4S12 models).
- Compatible with dedicated 208-230V single-phase circuits.
- ASLEC and ASLEK indoor models are ceiling cassette and concealed duct types, respectively — confirm ceiling/joist clearance requirements against the manufacturer's installation manual before ordering those configurations.
- Not compatible with 115V-only circuits.
- Not a listed match for indoor models outside this system's variant list — do not substitute indoor heads from other Air-Con series (e.g., Blizzard Series, Blue Series 4) without confirming AHRI-matched combinations.
- Line set is NOT included with any variant — this is a standard flare-connection system, not a pre-charged DIY kit.
- Wall-mounting brackets are NOT included with wall-mounted indoor heads.
FAQ
What breaker size do I need for this system?
Breaker size is [NEEDS VERIFICATION] — not confirmed in the manufacturer specifications provided. Confirm with a licensed electrician using the outdoor unit nameplate before installation.
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 pre-charged DIY kit. Installation by a licensed HVAC professional is required to maintain the warranty.
Is the line set included, and if not, what size do I need to buy?
Line sets are not included with this system. Exact line set diameters and lengths are [NEEDS VERIFICATION] — not specified in the manufacturer data provided; a licensed installer will size line sets per zone based on run length and indoor unit capacity.
Does this system work in cold climates (low-ambient heating)?
Low-ambient heating operating range is [NEEDS VERIFICATION] — not specified in the manufacturer data provided for this model.
Compliance & Warranty
Installation by a licensed HVAC professional is required to maintain warranty. Refrigerant handling must be performed by an EPA Section 608-certified technician. Warranty term details, HSPF2 heating efficiency, and low-ambient heating operating range were not included in the manufacturer data provided for this model; refer to the "Resources (System Manuals and Warranty)" Tab above for full manufacturer documentation.
