CORE COMFORT HVAC · ARIZONA
Cooling-only counterpart to the GX heat pump — ideal for Phoenix where heating is rarely needed.
Single-Zone Cooling Only · Wall-Mounted
Licensed & Bonded | ROC 363306 | Phoenix Metro Area
The MUY-GX | MSY-GX is a Mitsubishi Electric M-Series single-zone cooling only mini-split system paired with a wall-mounted indoor unit. Available in capacities from 9,000 to 36,000 BTU, it uses R-454B refrigerant and reaches up to 28.4 SEER2. Core Comfort HVAC installs the MUY-GX | MSY-GX throughout the Phoenix metro area for garages, casitas, bedrooms, home additions, and light commercial spaces.
As a single-zone system, the MUY-GX | MSY-GX pairs one outdoor condenser with one wall-mounted indoor unit to condition a single room or space. We review your room size, insulation, sun exposure, and ceiling height to confirm the right capacity, then plan placement, line routing, drainage, and the electrical connection.
EQUIPMENT & INSTALLATION
Available model configurations — confirmed during your free estimate
| Capacity | Outdoor Model | Indoor Model | SEER2 |
|---|---|---|---|
| 9,000 BTU | MUY-GX09NL | MSY-GX09NL | 28.4 |
| 12,000 BTU | MUY-GX12NL | MSY-GX12NL | 25.6 |
| 15,000 BTU | MUY-GX15NL | MSY-GX15NL | 22.2 |
| 18,000 BTU | MUY-GX18NL | MSY-GX18NL | 22.5 |
| 24,000 BTU | MUY-GX24NL | MSY-GX24NL | 21.5 |
| 30,000 BTU | MUY-GX30NL | MSY-GX30NL | 19.2 |
| 36,000 BTU | MUY-GX36NL | MSY-GX36NL | 18.5 |
* Final model selection and price confirmed via online estimator or on-site inspection. Basic electrical included when unit is garage-adjacent.
EQUIPMENT & INSTALLATION
Core Comfort HVAC installs the MUY-GX | MSY-GX single-zone cooling only across Phoenix, Scottsdale, Mesa, Tempe, Gilbert, Chandler, and the surrounding valley. Whether you're cooling a garage workshop, a bedroom addition, a casita, or an open commercial area, we size the system to your space and explain the equipment, placement, and schedule before work starts.
A 9,000 BTU unit suits a small room or one-car garage, while the 36,000 BTU configuration handles larger garages, workshops, and open living areas. We review your room's square footage, insulation, window exposure, and ceiling height, then recommend the capacity that keeps the space comfortable without short-cycling. The wall-mounted indoor unit sits high on an exterior-facing wall for clean line routing and even airflow.
Your installation covers mounting the indoor and outdoor units, connecting the refrigerant lines, installing line-set covers, arranging condensate drainage, and completing the required electrical connection. We include a concrete-grade equipment pad and basic electrical when the unit is garage-adjacent. Additional electrical work, long line runs, or difficult access can affect the scope — we explain what's included in your written quote before scheduling.
Every MUY-GX | MSY-GX installation by Core Comfort HVAC is backed by a 10-year labor warranty on installation workmanship, plus the manufacturer's parts warranty on the equipment. We walk you through the controls, filter care, and what to watch for after install. Keep your written quote and equipment documents with your model and serial numbers for warranty registration.
Ready to get started? Use our online estimator for a quick quote, or call (602) 960-2278 to schedule a consultation. You can also explore our mini-split installation services across the Phoenix metro area.
EQUIPMENT & INSTALLATION
LATEST GOOGLE REVIEWS
Read reviews on Google151 Google reviews
"Excellent install job. The unit is quiet, powerful, and keeps my garage perfectly cool. Worth every penny!"
Bob Hunt
Phoenix, AZ
"Arrived on time, worked professionally, cleaned up thoroughly. Had my garage cool by the same afternoon. The 10-year labor warranty sealed the deal."
Mark Dekoster
Phoenix, AZ
"Completely hassle-free. Competitive pricing, great workmanship. Transparent and fair pricing compared to other quotes."
Jigntao Li
Phoenix, AZ
Free online estimate or call to schedule a consultation.
Licensed & Bonded | ROC 363306 | Serving Phoenix Metro Area
Tell us what your home needs. Our team will follow up to discuss your options and the next step toward a site-specific quote.
Prefer to talk? Call (602) 960-2278.
