This is a single-zone ductless mini split system for heating and cooling one room or open area without ductwork. It's built for homeowners adding efficient comfort to a bedroom, living room, or addition, with a licensed HVAC professional handling the install.
The Serene PLUS is Air-Con's R32 wall-mounted heat pump system, built around an inverter-driven compressor for variable speed comfort rather than the on/off cycling of fixed-speed units. It is offered across 12,000, 18,000, 24,000, and 36,000 BTU capacities so you can match output to actual room size instead of oversizing. This system carries AHRI Reference Number 10272490. 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 unit (model varies by capacity: ASQCI7H4E12/18/24, ASQEM7H4E12/18/24)
- Indoor wall-mounted evaporator unit, matched to outdoor capacity
- Wireless remote control
- 16-foot pre-cut copper line set
- 16-foot signal and power electrical cable
Installation Requirements & Accessories
- Voltage: 208/230V, 60 Hz, single phase across all listed capacities (no 115V option is currently available for purchase)
- Line set: 1/4" & 3/8" for 12,000 and 18,000 BTU models; 1/4" & 1/2" for 24,000 BTU model; line set size for the 36,000 BTU model is [NEEDS VERIFICATION]
- A 16-foot copper line set and 16-foot electrical cable ARE included with this kit — do not purchase a separate line set unless your run exceeds 16 feet
- Licensed HVAC technician required for installation and maintenance; this is NOT a DIY pre-charged quick-connect system
- Not compatible with 115V-only circuits
- Wall mounting bracket/sleeve inclusion is [NEEDS VERIFICATION] — confirm before ordering
Pro-Installer Tip
Flare connections on R32 systems are less forgiving of over-torquing than older R410A joints, and an under-torqued flare is the most common cause of a slow refrigerant leak that shows up months later as reduced capacity or an "E" fault code on the indoor head. Always deburr the copper, apply refrigerant oil to the flare face, and torque to the manufacturer spec with a calibrated digital torque wrench rather than "feel." Pull the system down below 500 microns with a micron gauge before opening the service valves — a rushed vacuum leaves moisture and non-condensables in the line set, which shows up later as icing or compressor strain. This work falls under EPA Section 608 refrigerant handling rules, so only a certified technician should be breaking into the sealed system or recovering refrigerant from it.
Key Benefits
- Inverter-driven compressor for variable speed comfort and lower operating costs versus single-stage units
- R32 refrigerant with a 17 SEER2 rating for reduced monthly electricity use
- Low-ambient heating capability, rated by the manufacturer to continue heating down to -4°F
- WIFI ready — no additional accessory required to enable app control
- Auto clean function to help prevent mold and mildew buildup in the indoor coil
- Dedicated dehumidifier mode plus horizontal and vertical auto-louver airflow control
Technical Table
| Spec | Value | Unit |
|---|---|---|
| Voltage/Frequency/Phase | 208/230 - 60 | V/Hz, Single Phase |
| SEER2 | 17 | — |
| HSPF | 9.5 | — |
| Refrigerant | R32 | — |
| Cooling Capacity — 12,000 BTU model | 12000 | BTU/h |
| Heating Capacity — 12,000 BTU model | 11500 | BTU/h |
| Watts — 12,000 BTU model | 1170 | W |
| Amperage — 12,000 BTU model | 5.1 | A |
| Line Set Size — 12,000 BTU model | 1/4" & 3/8" | in |
| Cooling Capacity — 18,000 BTU model | 18000 | BTU/h |
| Heating Capacity — 18,000 BTU model | 16500 | BTU/h |
| Watts — 18,000 BTU model | 1770 | W |
| Amperage — 18,000 BTU model | 8 | A |
| Line Set Size — 18,000 BTU model | 1/4" & 3/8" | in |
| Cooling Capacity — 24,000 BTU model | 24000 | BTU/h |
| Heating Capacity — 24,000 BTU model | 22400 | BTU/h |
| Watts — 24,000 BTU model | 2365 | W |
| Amperage — 24,000 BTU model | 12 | A |
| Line Set Size — 24,000 BTU model | 1/4" & 1/2" | in |
| Operating Ambient Temperature — Cooling | 62 | °F |
| Operating Ambient Temperature — Heating | 86 | °F |
| Line Set Length Included | 16 | ft |
| AHRI Reference Number | 10272490 | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Options & SKUs
| Variant | SKU | Price (USD) |
|---|---|---|
| 220V / 12000 BTU | ASQCI/EM7H4S12 | 729.00 |
| 220V / 18000 BTU | ASQCI/EM7H4S18 | 969.00 |
| 220V / 24000 BTU | ASQCI/EM7H4S24 | 1159.00 |
| 220V / 36000 BTU | ASQCI/EM7H4S36 | 1499.00 |
Compatibility & Fitment
- Compatible with dedicated 208/230V single-phase circuits for all currently purchasable capacities
- Indoor unit is a standard wall-mounted evaporator — no joist-specific framing or drop ceiling required
- Not compatible with 115V-only circuits; the 110V/12000 BTU variant (ASQCI/EM7H1S12) is currently unavailable and should not be treated as a purchasable option
- Line set and electrical cable ARE included at 16 feet — longer runs require separately purchased line set matched to the correct diameter for your capacity
- Indoor and outdoor units are matched by model family (e.g., ASQCI7H4E12 with ASQEM7H4E12) — do not mix capacities between indoor and outdoor units
- Dimensions and line set size for the 36,000 BTU model are [NEEDS VERIFICATION] in the provided data
FAQ
What breaker size do I need for this system?
Exact breaker size is [NEEDS VERIFICATION] in the provided specifications. Amperage draw varies by capacity: 5.1A for the 12000 BTU model, 8A for the 18000 BTU model, and 12A for the 24000 BTU model. Have your installer size the breaker and disconnect to the nameplate rating of the unit you order.
Is professional installation required to keep the warranty valid, or is this a true DIY kit?
This is not a DIY kit. The manufacturer data states a licensed HVAC technician is required for proper installation and maintenance.
Is the line set included, and if not, what size do I need to buy?
Yes, a 16-foot copper line set and 16-foot signal/power electrical cable are included in the kit. Line set diameter is 1/4" & 3/8" for the 12000 and 18000 BTU models, and 1/4" & 1/2" for the 24000 BTU model.
Will the ceiling cassette fit between standard 16-inch on-center joists?
This system uses a wall-mounted indoor unit, not a ceiling cassette, so joist spacing does not apply.
Does this system work in cold climates (low-ambient heating)?
The manufacturer states the system can continue heating in low ambient temperatures as low as -4 degrees Fahrenheit. Published operating ambient temperature specs list 62°F for cooling and 86°F for heating; confirm the full low-ambient heating range with the manufacturer resources tab before ordering for extreme cold climates [NEEDS VERIFICATION].
Compliance & Warranty
Installation by a licensed HVAC professional is required to maintain warranty. Full warranty terms are published on the Air-Con International Warranty Information page and registration is handled through the manufacturer's Warranty Registration page — see the "Resources (System Manuals and Warranty)" Tab above for these documents. This product carries a California Proposition 65 warning per the manufacturer.
