After years of toughing out southern Arizona summers, Livia Pontual can finally sit back and chill.
Patagonia, Arizona sits in a quiet pocket of the Sonoran high desert, tucked between the Santa Rita and Patagonia mountains. It's a town of cottonwoods, dusty light, and afternoons that can drift past 100 degrees without breaking a sweat, which is more than can be said for the people living through them.
Livia Pontual moved to Patagonia several years ago after becoming an empty nester. She was looking for a smaller, quieter chapter in a place that could accommodate her love of nature. After moving, she turned a back room in her house into a small massage studio and slowly built a steady local clientele, but knew her lack of reliable A/C was a real issue for her clients.
Like many homes without ductwork, adding a traditional cooling system wasn't a simple fix. The house came with an aging system that, charitably, had seen better summers. It sputtered through start-ups, lost refrigerant faster than anyone could explain, and rarely managed to cool more than one room at a time. By August, her high energy bills offered zero comfort in return; the kitchen felt ten degrees hotter than the living room, and the massage studio, the one space where temperature really mattered, was the hardest to keep comfortable.
Even when I convinced myself the heat was manageable, there was always the feeling that my clients and guests were unhappy. I encouraged them to relax, but the heat wouldn’t let them!
— Livia Pontual, Patagonia, AZ
Why MRCOOL® DIY® Made the Short List
When Livia started looking into a real cooling solution, she found herself weighing the cost of a mini split vs. central air system. Two things kept knocking traditional quotes out of reach: the construction expense of retrofitting a ducted vs. ductless system into an older home, and the premium licensed installer labor that came with most standard split systems.
That’s when she discovered the MRCOOL® DIY® Mini Split System. Instead of a bulky packaged unit or a rigid central air system, this setup is a highly efficient heat pump capable of both heating and cooling. The pitch was simple:
- Patented Quick Connect® Line Sets: Pre-charged lines meant no vacuuming, no flaring, and no specialty HVAC tools.
- Homeowner-Friendly Installation: Her nephew could handle the job himself on his own timeline, saving on expensive professional labor.
- Inverter Technology: Unlike old-school compressors that constantly cycle loudly on and off at full blast, an advanced inverter adjusts its speed dynamically. This ensures improved energy efficiency and whisper-quiet performance.
- Flexible Layouts: Whether someone needs to heat a cold climate HVAC region, manage a humid coastal climate HVAC zone, outfit garages/workshops, or condition new room additions, the system scales perfectly.
The Power of Multi-Zone Customization
The ultimate deciding factor for Livia was choosing a multi-zone vs. single-zone setup. Instead of trying to cool the entire house under one thermostat, a whole-home system allowed her to establish three independent zones based on specific BTU requirements by square footage:
- Zone 1 (The Living Room): The heart of the house, where guests gather, the dog naps, and Livia winds down at the end of the day.
- Zone 2 (The Kitchen): Once the hottest room in the house, it now stays steady even with the oven going and the Arizona sun beating down on the west wall.
- Zone 3 (The Massage Studio): Set a few degrees cooler for client comfort with its own dedicated remote control.
A Day and a Half, Three Zones, Zero Service Tickets
The installation took just a day and a half. Holes were drilled through the exterior walls, line sets were uncoiled, and the indoor units were set up using versatile air handler mounting options to keep them sleek and flush. The outdoor condenser unit found a tucked-away spot on the shaded side of the property where it wouldn’t compete with Livia’s planters.
The only phase Livia wanted handled by a professional was the electrical requirements for the HVAC system. A local electrician swung by to safely run a dedicated circuit to power the system condenser. From there, it was just a matter of connecting the pre-charged line sets. Because of its clean electrical profile, it’s also an ideal match for homeowners looking toward future solar integration.
By the end of the second afternoon, all three zones were humming quietly. The first cold blast through the living room vent, Livia says, was the moment the project stopped being a home improvement and started being a lifestyle change.
I didn't realize how much energy I'd been spending just being hot. Now I walk into the kitchen at three in the afternoon and it feels like a different house.
— Livia Pontual, Patagonia, AZ
What Changed, in Numbers and in Feel
Three independent zones. A day and a half of total install time. Zero service calls since.
The numbers are tidy, but the real change is harder to put on a spec sheet. Livia's clients started commenting on the difference within a week. Her kitchen became somewhere she actually wanted to cook. Her living room turned back into a comfortable oasis to host friends in the evenings.
She also gained the ultimate peace of mind. She stopped planning her day around the heat and got her time back.
The Takeaway
Livia's story isn't unique to Patagonia, or to Arizona. All across the country, there are older homes, unique layouts, and homeowners who've been told that real comfort requires a professional contractor and a contractor invoice. MRCOOL® DIY® was built for exactly those spaces. It gives people premium climate control completely on their own terms.
- Disclosure: Livia Pontual received her MRCOOL® DIY® system at no cost in exchange for sharing her testimony. Elements of this story and imagery have been edited and condensed for clarity and marketing purposes.
- Product disclaimer: Individual results vary based on home size, layout, climate, and installation. MRCOOL® DIY® systems are designed for homeowner installation. Consult local codes and the product manual before beginning your project.*