Air-Con | 36000 BTU | 21 SEER | Mixed Indoor Heads | Multi-Zone Mini Split System | 208-230V | AMSCI4H4S36-3ZONE

This is a 3-zone ductless mini split system for cooling and heating three separate rooms from one outdoor condenser, without ductwork. It's built for homeowners who need to condition multiple rooms — say, three bedrooms or a bedroom, office, and living space — on one 208-230V outdoor unit.

The AMSCI4H4S36 outdoor condenser is AHRI-certified and Energy Star qualified, and pairs with a mix of wall-mounted, ducted, and cassette indoor units depending on the variant you select — letting you match indoor unit architecture to each room's layout. 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: Air-Con AMSCI4H4S36, 36,000 BTU, 21 SEER, 208-230V, 3-zone multi-split condenser
• Indoor Head Options (selected per variant): ABXEM4H4S09/12/18 (Wall Mounted, 9K/12K/18K BTU), ASLEC4H4S09/12/18 (Cassette, 9K/12K/18K BTU), ASLEK4H4S12/18 (Ducted, 12K/18K BTU) — all 208-230V
• Available combinations range from three matched 9K wall units up to mixed 9K/12K/18K cassette and ducted configurations — see Options & SKUs table below

Installation Requirements & Accessories

• Voltage: 208-230V single-phase, required for the outdoor condenser and all indoor heads listed
• Line set sizing: [NEEDS VERIFICATION] — not specified in source data; confirm per indoor head combination with installer
• Line Set Sold Separately — this is not a pre-charged DIY kit
• Not compatible with 115V-only circuits
• Wall sleeve/mounting bracket NOT included for wall-mounted indoor heads
• Professional installation required — this system is not a quick-connect or pre-charged DIY unit

Pro-Installer Tip

On any 3-zone system, flare connections at each indoor head are where refrigerant loss and "E1" communication faults usually start. With three separate line set runs feeding one outdoor unit, torque every flare joint to spec with a digital torque wrench rather than "feel" — an under-torqued flare seeps refrigerant slowly and shows up as a warm zone or a fault code months later, not on startup. Pull the whole system down below 500 microns with a micron gauge before charging, and hold the vacuum to confirm no rise before opening valves. This is EPA Section 608 territory — refrigerant handling on a system this size requires certified handling and proper recovery equipment, not a shortcut.

Key Benefits

• Inverter-driven outdoor compressor delivers variable-speed comfort across three independent zones from one condenser
• 21 SEER rated outdoor unit for efficiency across mixed indoor head combinations
• Energy Star certified and backed by AHRI certification
• Indoor head options span wall-mounted, cassette, and ducted architectures so each room can get the fitment that suits it
• Single 208-230V outdoor unit simplifies electrical planning versus three separate single-zone systems

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

Options & SKUs

Compatibility & Fitment

• Compatible with dedicated 208-230V single-phase circuits only — required for outdoor condenser and all indoor heads
• Outdoor unit AMSCI4H4S36 is matched to the specific indoor head combinations listed in the Options & SKUs table above
• Not compatible with 115V-only circuits
• Line set is NOT included with any variant of this system — this is not a pre-charged DIY kit
• Wall mounting bracket/sleeve NOT included for wall-mounted indoor head options
• Joist bay and ceiling cutout fitment for cassette-type indoor heads is [NEEDS VERIFICATION] — confirm against manufacturer manual before finalizing room layout

FAQ

What breaker size do I need for this system?

Breaker size is [NEEDS VERIFICATION]. The outdoor unit runs on 208-230V single-phase power; confirm exact breaker and disconnect sizing against the nameplate rating in the manufacturer manual before installation.

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

This is not a DIY kit. It requires flare connections, refrigerant line evacuation, and licensed HVAC installation to remain within warranty terms.

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 sizing per indoor head is [NEEDS VERIFICATION] — confirm against the installation manual for each specific indoor unit combination you select.

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

The cassette-type indoor units offered in this system's variants (ASLEC4H4S series) are traditional cassette units; joist bay clearance and drop-ceiling fitment specifics are [NEEDS VERIFICATION]. Confirm ceiling cutout dimensions in the manufacturer manual before ordering.

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

Low-ambient heating performance and minimum operating temperature for this outdoor unit are [NEEDS VERIFICATION] in the provided specifications.

Compliance & Warranty

Installation by a licensed HVAC professional is required to maintain warranty. This system is Energy Star certified and carries AHRI certification for the matched outdoor/indoor combinations listed. Refrigerant handling during installation falls under EPA Section 608 requirements and must be performed by an EPA-certified technician. Refer to the "Resources (System Manuals and Warranty)" Tab above for full warranty terms specific to each indoor unit combination.