Ductless Mini Split Installation in San Diego

Efficient, zone-controlled comfort without ductwork. Ideal for room additions, garages, and homes without existing ducts.

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Free quote for residential ductless mini split installation. No purchase necessary. Additional restrictions may apply.

Flexible Comfort for Every Room

Ductless mini split systems are one of the most versatile and energy-efficient ways to heat and cool your San Diego home. Unlike traditional central systems that rely on ductwork, mini splits deliver conditioned air directly to individual rooms or zones, giving you precise temperature control where you need it most.

Whether you’re adding comfort to a room addition, converted garage, home office, or older home without ductwork, ASI’s certified technicians will design and install a ductless system tailored to your space. Mini splits are quiet, efficient, and can provide both cooling and heating from a single unit.

Perfect For

When a Ductless Mini Split Makes Sense

Mini splits solve specific comfort challenges that traditional systems can't address.

Room Additions & Conversions

Adding a bedroom, converting a garage, or finishing an attic? A mini split provides dedicated heating and cooling without extending your existing ductwork.

Homes Without Ductwork

Many older San Diego homes were built without ducts. A mini split system adds modern comfort without the cost and disruption of installing ductwork throughout the home.

Hot or Cold Rooms

If certain rooms in your home are always too hot or too cold, a mini split provides supplemental, zone-controlled comfort exactly where you need it.

Home Offices & Studios

Keep your workspace comfortable year-round without over-cooling or over-heating the rest of the house. Mini splits give you independent temperature control.

The ASI Difference

Benefits of Ductless Mini Split Systems

Mini splits offer unique advantages that make them an excellent choice for many San Diego homes.

Energy Efficiency

Mini splits are among the most efficient HVAC systems available. With no duct losses and inverter-driven compressors, they use significantly less energy than traditional systems.

Zone Control

Each indoor unit operates independently, so you only condition the rooms you're using. This personalized comfort also reduces energy waste.

Whisper-Quiet Operation

Indoor units are remarkably quiet—often as low as 19 decibels. You'll enjoy comfortable temperatures without the noise of a traditional system.

Flexible Installation

With only a small hole needed for the refrigerant line, mini splits can be installed almost anywhere with minimal disruption to your home.

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Our Process

Our Mini Split Installation Process

From assessment to installation, we handle everything.

1. In-Home Assessment

We evaluate your space, discuss your comfort goals, and recommend the right mini split configuration—single-zone or multi-zone—for your needs.

2. System Design

We select the right capacity, placement, and number of indoor units to ensure optimal comfort and efficiency for each zone.

3. Professional Installation

The White Glove Guys mount indoor and outdoor units, run refrigerant lines, and make electrical connections with precision and minimal disruption.

4. Testing & Training

We test every zone for proper operation, set up your remote controls, and walk you through the system features so you get the most out of your investment.

Customer Reviews

What Our Customers Say

Don't just take our word for it — hear from our satisfied San Diego customers.

Scripps West Dental 3 weeks ago

★★★★★

Manny Chavez, is an outstanding quality control employee who truly takes pride in his work. His attention to detail, professionalism, and dedication are unmatched. He consistently goes above and beyond to make sure everything is done correctly and efficiently. What stands out the most is how much he genuinely cares about his job and the quality of the work he delivers. Manny’s positive attitude, strong work ethic, and commitment to excellence make him an incredible asset to the team. It has been a pleasure working with someone so reliable and hardworking. We are especially grateful for how quickly Manny helped us during our AC emergency. His fast response, professionalism, and willingness to help made a huge difference for our office, and we truly appreciated his support during such a stressful situation. Thank you, ASI, for sending us your best employee. Manny has been absolutely amazing, and we truly appreciate all of his hard work and dedication.

Michael Perez in the last week

★★★★★

I recently had maintenance done on my AC and furnace by ASI, and I wanted to highlight the great experience I had—especially with the technician, Jesus. From start to finish, Jesus was extremely professional, thorough, and clearly very knowledgeable about his work. He took the time to carefully service and clean both the AC and furnace, making sure everything was running properly and efficiently. What really stood out to me was his attention to detail—he didn’t rush the job and even went the extra mile by cleaning the outside of the unit, which I truly appreciated. On top of that, his customer service was outstanding. He was friendly, respectful, and took the time to explain what he was doing, which gave me a lot of confidence in the work being performed. Overall, I’m very satisfied with the service and the level of care provided. I will definitely be using ASI again in the future and would highly recommend requesting Jesus if you want the job done right.

Raymond Johnson in the last week

★★★★★

After 21 years of faithful service our heater finally gave out. ASI came to the house and we went over a few options as to repair or replace. We elected the latter, and the very next morning ASI was on site with the new heater. Within 6 hours, Sebastian Garcia and his helper had the new heater installed. Sebastian spent some time explaining how to use the new thermostat, which is so much easier to use than the previous one. By the time they left the garage was clean and all the old stuff was carted away. A great job by an outstanding company. This morning I checked my old paperwork and found that the new heater and thermostat were only a couple of hundred dollars more than the ones I had purchased 21 years ago. ASI really offers good prices and great equipment. A special thanks to the service manager Joe Gondak for keeping in touch with the crew to insure there were no problems during the installation

Ductless Mini Split Questions Answered

Can a mini split heat and cool?

Yes! Most modern mini split systems are heat pumps that provide both cooling and heating from a single unit. They’re an excellent year-round comfort solution for San Diego’s climate.

How many rooms can a mini split system serve?

A single outdoor unit can support multiple indoor units (typically 2-5 zones), each with independent temperature control. We’ll design the right multi-zone configuration for your home.

Are mini splits expensive to operate?

No—mini splits are actually among the most energy-efficient HVAC systems available. Their inverter-driven compressors and absence of duct losses mean lower operating costs compared to traditional systems.

How long does mini split installation take?

A single-zone mini split installation typically takes half a day. Multi-zone installations may take a full day depending on the number of indoor units and complexity of the layout.

How much does a ductless mini split cost to install in San Diego?

Cost depends on the number of zones, the system’s efficiency rating, and the difficulty of mounting the indoor units. A single-zone system generally runs less than a multi-zone setup serving several rooms. ASI provides a free in-home estimate with upfront flat-rate pricing, and financing is available so a new mini split fits your budget.

Is a mini split a good choice for a room addition or converted garage?

Yes. Mini splits are ideal for additions, converted garages, sunrooms, and ADUs because they do not require extending existing ductwork. The indoor unit mounts on a wall or ceiling, and only a small line set connects it to the outdoor condenser. This makes them one of the easiest and most efficient ways to add comfort to a space your central system cannot reach.

Do mini splits require much maintenance?

Mini splits are low maintenance but not maintenance free. Rinsing or replacing the washable indoor filters every few weeks keeps efficiency high, and an annual professional tune-up keeps the coils clean and the refrigerant charge correct. As the White Glove Guys, we recommend a yearly check to protect performance and the manufacturer warranty.

More FAQs

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Ready for Ductless Comfort? Let's Talk.

Whether you need cooling for a single room or a whole-home solution, our White Glove experts will design the perfect mini split system for your space.

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Mini Split Installation Throughout San Diego County

We proudly serve over 50 communities across San Diego County

Ductless Mini Split Installation in San Diego

Flexible Comfort for Every Room