This is a single-zone ductless mini split system that cools and heats one space using a concealed duct air handler hidden above a drop ceiling or in a soffit — built for rooms where you want a fully ducted, invisible-in-the-room finish rather than a visible wall or ceiling unit.
The ASLCI4H4S12 outdoor condenser is AHRI-matched to the ASLEK4H4S12 concealed duct air handler, forming the Sky Pro Series 12,000 BTU ducted configuration rated at 23 SEER on a 208-230V single-phase circuit. 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: ASLCI4H4S12 (12,000 BTU, 208-230V)
- Indoor Unit: ASLEK4H4S12 concealed duct air handler (12,000 BTU, 208-230V)
Installation Requirements & Accessories
- Voltage: 208-230V single-phase — not compatible with 115V-only circuits
- Line set sold separately; exact size is [NEEDS VERIFICATION] against the installation manual
- Professional installation required — this is not a pre-charged DIY system
- Not included: wall thermostat/controller, ductwork, grilles, and any wall-mounted or cassette-style indoor head not matched to this outdoor unit under the ASLEC/ASLEK4H4S12 AHRI pairing
Pro-Installer Tip
Concealed duct flare connections above a finished ceiling are unforgiving — a joint that seeps slowly will show up months later as a warm room and an E1 or low-charge fault code, and by then the ceiling is already closed up. Torque every flare to spec with a digital torque wrench rather than "feel," and pull the system down below 500 microns with a calibrated micron gauge before opening the service valves — a rushed vacuum is the single most common cause of nuisance callbacks on ducted units. This work falls under EPA Section 608 refrigerant handling requirements, so it must be performed and signed off by a certified technician.
Key Benefits
- Inverter-driven compressor for variable-speed comfort instead of blunt on/off cycling
- Concealed duct design keeps the indoor unit fully out of sight above the ceiling
- 23 SEER rating on the matched ASLCI4H4S12 / ASLEK4H4S12 pairing
- AHRI-certified outdoor/indoor combination for verified performance data
- 208-230V single-phase power supply
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Cooling Capacity | 12,000 | BTU/h |
| SEER | 23 | — |
| Voltage | 208-230 | V |
| Outdoor Condenser Model | ASLCI4H4S12 | — |
| Indoor Air Handler Model | ASLEK4H4S12 | — |
| Indoor Unit Architecture | Concealed Duct Ceiling | — |
| Zone Count | 1 | — |
| DIY Status | No — Professional Installation Required | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- The outdoor condenser ASLCI4H4S12 is AHRI-matched to the indoor concealed duct air handler ASLEK4H4S12 — this specific pairing is what forms the 23 SEER rating for this listing.
- Compatible with dedicated 208-230V single-phase circuits only.
- Not compatible with 115V-only circuits.
- Not a listed match for other indoor head types (such as wall-mounted ABXEM4H4S12 or ceiling cassette ASLEC4H4S12) — those are separate AHRI-certified pairings and are not included with this listing.
- Line set is not included; sold separately.
- Ductwork, grilles, and wall controller are not included.
FAQ
What breaker size do I need for this system?
Breaker size is [NEEDS VERIFICATION]. The system operates on a 208-230V single-phase supply; confirm exact breaker and wire sizing against the unit's nameplate and the Resources tab before rough-in.
Is professional installation required to keep the warranty valid, or is this a true DIY kit?
This is not a DIY pre-charged kit. It uses flare connections and requires an EPA Section 608-certified technician to evacuate the line set and commission the system. Professional installation is required to keep the manufacturer warranty valid.
Is the line set included, and if not, what size do I need to buy?
The line set is not included. Exact line set diameter and maximum run length are [NEEDS VERIFICATION] — confirm against the installation manual in the Resources tab before ordering.
Will the ceiling cassette fit between standard 16-inch on-center joists?
This model is a concealed duct air handler, not a ceiling cassette. It mounts above the ceiling plane and connects to supply/return ductwork. Cabinet dimensions and joist clearance are [NEEDS VERIFICATION].
Does this system work in cold climates (low-ambient heating)?
Heating capacity and low-ambient operating range for this model are [NEEDS VERIFICATION] in the provided specifications. Refer to the manufacturer's Resources tab for cold-climate performance data.
Compliance & Warranty
Installation by a licensed HVAC professional is required to maintain warranty. Refrigerant line set evacuation and charging must be performed by an EPA Section 608-certified technician. Full warranty terms are available in the Resources (System Manuals and Warranty) tab above.
