This is a single-zone ductless mini split system for cooling and heating one room without ductwork, using a concealed duct indoor unit designed to hide above a drop ceiling or in a soffit. It's built for homeowners or contractors who want the airflow of a small ducted system without the visible footprint of a wall unit or cassette.
The Sky Pro Series ASLCI4H4S09 outdoor condenser is matched with the ASLEK4H4S09 concealed duct indoor unit, an AHRI-certified pairing per Air-Con International's published product tables. This concealed duct architecture is designed to sit above a ceiling or in a mechanical chase, connecting to short duct runs and a grille rather than mounting on a wall or dropping below the ceiling plane like a cassette. 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 Sky Pro ASLCI4H4S09, 9,000 BTU/h, 19 SEER, 208-230V
- Indoor Unit: Air-Con Sky Pro ASLEK4H4S09 concealed duct (ceiling-concealed) air handler, 9,000 BTU/h, 208-230V
Installation Requirements & Accessories
- Voltage: 208-230V — this is not a 115V-compatible system; confirm your available circuit before ordering.
- Line set size and maximum run length: [NEEDS VERIFICATION] — not specified in manufacturer data provided.
- Line Set Sold Separately: this system does not ship with a pre-charged line set. A licensed installer must supply, run, flare, and vacuum the line set to spec.
- Not compatible with: indoor heads from other Sky Pro sub-lines (cassette-type ASLEC, wall-mounted ABZEM/ABXEM series) — those units are not AHRI-matched to the ASLCI4H4S09 condenser under this listing.
- Wall sleeve, ceiling grille, and duct materials are not included.
Pro-Installer Tip
Flare connections on 9K systems are a common leak point, especially on smaller-diameter suction lines where over-torquing distorts the flare face. Under-torquing, meanwhile, leaves a joint that slow-leaks refrigerant over the first heating season and can trigger nuisance low-charge faults or communication errors between indoor and outdoor boards. Torque every flare nut with a calibrated digital torque wrench to the manufacturer's spec rather than "feel," and always cut and re-flare with an eccentric flaring tool instead of reusing a factory flare. Per EPA Section 608, only certified technicians may handle refrigerant during evacuation and charging — pull the system down below 500 microns before opening the service valves to protect both charge integrity and long-term SEER performance.
Key Benefits
- Inverter-driven compressor for variable-speed comfort rather than blunt on/off cycling
- Concealed duct design keeps the indoor unit out of sight above the ceiling line
- 19 SEER rated efficiency on this 9,000 BTU/h pairing
- AHRI-certified outdoor/indoor match documented by the manufacturer
- 208-230V dedicated circuit design for consistent single-zone performance
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Cooling Capacity | 9,000 | BTU/h |
| SEER2 (Rated Efficiency) | 19 | SEER |
| Voltage | 208-230 | V |
| Indoor Unit Architecture | Concealed Duct Ceiling | — |
| Zone Count | 1 | zone |
| DIY Status | No — Professional Installation Required | — |
| Outdoor Unit Model | ASLCI4H4S09 | — |
| Indoor Unit Model | ASLEK4H4S09 | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- The ASLCI4H4S09 outdoor condenser is AHRI-matched to the ASLEK4H4S09 concealed duct indoor unit — this is the correct paired combination for this listing.
- Compatible with dedicated 208-230V single-phase circuits only. Not compatible with 115V-only circuits.
- Not a listed match for Sky Pro cassette-type (ASLEC series) or wall-mounted (ABZEM/ABXEM series) indoor units under this outdoor condenser listing.
- Line set is NOT included — this is a standard flare-connection system, not a pre-charged DIY kit.
- Ceiling grille, duct materials, and any wall sleeve/mounting hardware are NOT included.
FAQ
What breaker size do I need for this system?
Breaker size is [NEEDS VERIFICATION]. Voltage is confirmed at 208-230V; consult the manufacturer's electrical data sheet on the Resources tab before rough-in.
Is professional installation required to keep the warranty valid, or is this a true DIY kit?
This is a standard flare-connection 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?
The line set is not included. Line set diameter and length are [NEEDS VERIFICATION] — confirm sizing with the installing contractor or manufacturer manual.
Does this system work in cold climates (low-ambient heating)?
This model is documented in manufacturer data as an air conditioner (cooling); heating capacity and low-ambient heating performance are [NEEDS VERIFICATION] in the provided specs.
Compliance & Warranty
Installation by a licensed HVAC professional is required to maintain warranty. Refrigerant handling, evacuation, and charging must be performed by an EPA Section 608 certified technician. Full warranty terms are detailed in the manufacturer documentation — see the "Resources (System Manuals and Warranty)" Tab above on this page.
