Ductless Mini Split Repair in San Jose, CA
Here at Sandium Heating and Air Conditioning, we understand the annoyance of having HVAC troubles and are there to assist you with quick, quality ductless mini-split repair in San Jose, CA.

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A ductless mini-split is an excellent option for maintaining year-round comfort in your home, but when it begins malfunctioning, it is no longer fun. If your system is failing to heat and cool as intended, producing odd noises, or turning off prematurely, it's time to contact a professional.
Ductless Mini-Split Issues We Troubleshoot and Repair
Mini-splits are intricate systems, and even minor trouble can hamper performance. Our skilled professionals are trained in performing even the most sophisticated repairs, and we're experts in detecting and resolving issues such as:
- Refrigerant Leaks – Low refrigerant causes your system to have to work overtime and can mean larger issues.
- Electrical Malfunctions – Malfunctioning wiring, faulty sensors, or broken components can lead your unit to suddenly shut off.
- Blower Motor Malfunctions – Dying airflow or airflow at all? That might spell disaster for the blower motor.
- Compressor Issues – When your system's not heating or cooling like it should, a malfunctioning compressor might be the culprit.
- Drainage Problems – Blocked drain lines may result in water leaks, moisture issues, or even mold development.
We're familiar with these systems like the back of our hand and take the time to repair the cause of the problem, not just the symptom, so you won't have to worry about experiencing the same issue again.
Warning Signs Your Mini-Split Needs Repair
Not certain if your mini-split requires professional service? Here are some warning signs to watch for:
✔️ Unbalanced temperatures – Too hot in one room, too cold in another, despite unaltered settings.
✔️ Unusual noises – Grinding, buzzing, or hissing indicate that something's amiss.
✔️ Short cycling – Constantly turning off and on again indicates trouble with the compressor, thermostat, or airflow.
✔️ Higher energy bills – A sudden spike in your bill could mean your system is struggling to keep up.
✔️ Bad odors – Musty or burning smells coming from your unit could indicate mold or electrical issues.
If you’re noticing any of these issues, it’s best to get them checked out before they turn into bigger (and more expensive) problems.
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Why Choose Sandium Heating and Air Conditioning?
We at Sandium Heating and Air Conditioning pride ourselves on delivering excellent HVAC service supported by mechanical engineering know-how. That is, we're not merely repairing issues—we're resolving them with accuracy and attention to detail. When you request ductless mini-split repair from us, you can look forward to:
✅ Complete diagnostics – We don't speculate—we employ state-of-the-art equipment to identify the problem.
✅ Professional technicians – Our technicians are trained to handle all major mini-split brands.
✅ Transparent pricing – No surprise fees or charges—just straightforward, upfront pricing.
✅ Quick turnaround – We know a malfunctioning mini-split is an inconvenience, so we work efficiently to get things back on track.
✅ Durable repairs – Quality workmanship and long-lasting solutions are our top priority.
We understand how important it is to have a comfortable home, and we’re committed to getting your mini-split running smoothly again.
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Frequently asked questions
Everything you need to know about and how we can help.
Unlike central HVAC systems, ductless mini-splits do not require ductwork, making them ideal for areas where traditional ducts are impractical. They offer individual room control for personalized comfort.
Yes, ductless mini-split systems provide both heating and cooling, making them a versatile solution for year-round comfort in all types of spaces.
Regular maintenance includes cleaning or replacing filters, inspecting the outdoor unit for debris, and professional servicing to ensure optimal performance and efficiency.
Don't just take our word for it
Our satisfied customers are our biggest advocates. Don't just take our word for it – hear what they have to say about their experience with Sandium.
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Lisa Rose
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Camila Mata
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Tyler White
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Isaiah Jenkins
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Tyler Anderson
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Jean Schmidt
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Toni Lumpkin

Schneider Katy
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Alax Alisha
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Larry Siegel
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Gianna Estes
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Lisa Rose
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Camila Mata
.png)
Tyler White
.png)
Isaiah Jenkins
.png)
Tyler Anderson
.png)
Jean Schmidt
.png)
Toni Lumpkin

Schneider Katy
.png)
Alax Alisha
.png)
Larry Siegel
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Gianna Estes
Areas we service
Atherton, Campbell, Cupertino, Hillsborough, Los Altos Hills, Los Altos, Los Gatos, Mountain View, Palo Alto, Portola Valley, Redwood City, San Carlos, San Jose, Santa Clara, Saratoga, Sunnyvale, Woodside
Join the Future of Home Comfort
Take the first step towards comfortable, energy-efficient, and stress-free living by scheduling a consultation with Sandium.
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