This is a 2-zone ductless mini split system for cooling and heating two separate rooms from a single outdoor condenser. It's built for homeowners who need independent temperature control in two spaces — for example a bedroom and a living room — without running new ductwork.
The Air-Con Multi Split Series pairs an AMSCI4H4S36 outdoor condenser with two matched wall-mounted indoor heads (ABXEM4H4S12 and ABXEM4H4S18), an AHRI-certified combination per Air-Con's published compatibility tables. This configuration is designed for two-room comfort applications where wall space is available for standard wall-mounted indoor units. 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: AMSCI4H4S36 — 36,000 BTU/h combined capacity, 21 SEER, 208-230V, Energy Star qualified, AHRI certified
- Indoor Unit 1: ABXEM4H4S12 — 12,000 BTU/h, wall-mounted architecture, 208-230V
- Indoor Unit 2: ABXEM4H4S18 — 18,000 BTU/h, wall-mounted architecture, 208-230V
Installation Requirements & Accessories
- Voltage: 208-230V single-phase for the outdoor condenser and both indoor heads
- Line sets are sold separately and must be sized to each indoor head per the installation manual
- Not compatible with 115V-only circuits
- Not a DIY pre-charged kit — this is a standard flare-connection multi-zone system requiring vacuum evacuation
- Wall-mounted indoor units require a mounting plate and wall sleeve; confirm inclusion with your installer, as these are not confirmed as included in the provided data
Pro-Installer Tip
With two indoor heads sharing one outdoor unit, flare connection quality at each branch joint matters twice as much. A loose or over-torqued flare nut on either the 12K or 18K indoor line set is the most common cause of slow refrigerant leaks and eventual "E1" or communication fault codes on multi-zone systems. Torque every flare connection to the fitting manufacturer's spec using a digital torque wrench — don't estimate by feel. Before charging, pull the full line set network down below 500 microns with a micron gauge and hold it there to confirm no leaks; this protects both zones' EEV operation and long-term efficiency. Refrigerant handling on this system requires EPA Section 608 certification.
Key Benefits
- Inverter-driven variable speed compressor for steady comfort across both zones
- Independent temperature control for two rooms from a single outdoor unit
- Energy Star qualified and AHRI certified matched combination
- 21 SEER rated outdoor unit for efficient two-zone operation
- Wall-mounted indoor units for straightforward placement in most rooms
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Outdoor Unit Model | AMSCI4H4S36 | — |
| Outdoor Unit Cooling Capacity | 36000 | BTU/h |
| Outdoor Unit SEER | 21 | SEER |
| Voltage | 208-230 | V |
| Zone Count | 2 | zones |
| Indoor Unit 1 Model / Capacity | ABXEM4H4S12 / 12000 | BTU/h |
| Indoor Unit 2 Model / Capacity | ABXEM4H4S18 / 18000 | BTU/h |
| Indoor Unit Architecture | Wall Mounted | — |
| Energy Star | Yes | — |
| AHRI Certified | Yes | — |
| DIY Status | No — Professional Installation Required | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Options & SKUs
| Variant | SKU | Price (USD) |
|---|---|---|
| ABXEM4H4S12 + ABXEM4H4S18 | AMSCI4H4S36-2ZONE-ABXEM4H4S12-ABXEM4H4S18 | 3367.00 |
| ABXEM4H4S12 + ABXEM4H4S24 | AMSCI4H4S36-2ZONE-ABXEM4H4S12-ABXEM4H4S24 | 3479.00 |
| ABXEM4H4S12 + ASLEK4H4S24 | AMSCI4H4S36-2ZONE-ABXEM4H4S12-ASLEK4H4S24 | 3417.00 |
| ABXEM4H4S18 + ABXEM4H4S18 | AMSCI4H4S36-2ZONE-ABXEM4H4S18-ABXEM4H4S18 | 3479.00 |
| ASLEC4H4S12 + ABXEM4H4S24 | AMSCI4H4S36-2ZONE-ASLEC4H4S12-ABXEM4H4S24 | 3810.00 |
| ASLEC4H4S18 + ASLEC4H4S18 | AMSCI4H4S36-2ZONE-ASLEC4H4S18-ASLEC4H4S18 | 3906.00 |
Compatibility & Fitment
- The AMSCI4H4S36 outdoor unit is matched to indoor heads per Air-Con's published multi-zone combination tables; the ABXEM4H4S12 + ABXEM4H4S18 pairing shown here is one of several available combinations (see Options & SKUs table above).
- Wall-mounted indoor units (EM series) fit standard interior wall space — they are not ceiling cassettes and do not require joist-specific framing.
- Not compatible with 115V-only circuits — this system requires a dedicated 208-230V single-phase circuit.
- Line sets are NOT included with any variant of this system.
- Wall mounting brackets/sleeves are not confirmed as included; verify with your installer before ordering.
FAQ
What breaker size do I need for this system?
Breaker size is [NEEDS VERIFICATION]. The outdoor unit AMSCI4H4S36 operates on 208-230V; a licensed electrician should size the circuit per the nameplate and local code.
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. Line set sizing per indoor head is [NEEDS VERIFICATION] — confirm sizing with the installation manual before ordering.
Does this system work in cold climates (low-ambient heating)?
Low-ambient heating performance and operating temperature range are [NEEDS VERIFICATION] in the provided specifications.
Compliance & Warranty
Installation by a licensed HVAC professional is required to maintain warranty. This system uses standard flare fittings and requires EPA Section 608 certified handling of refrigerant during installation and service. Warranty term length is [NEEDS VERIFICATION] — refer to the Resources (System Manuals and Warranty) Tab above for the full manufacturer warranty document.
