West Coast technician servicing a ductless mini-split system

Our guarantee100% Satisfaction Guarantee

Ductless mini-split repair, maintenance and installation

Mini Split Installation in San Diego, CA

Trust West Coast Heating Air Solar & Plumbing for professional mini split installation in San Diego, CA. Get started with a free quote today!

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Five-star rated on Google, Yelp, Facebook and BBB

Same-day repairsOn most services, 7 days a week

Lifetime labor warrantyOn qualifying installs and repairs

All brands and modelsWhatever you have, we work on it

No service call feeWaived when we do the repair

Serving San Diego

Professional Mini Split Installation in San Diego, CA

Achieving consistent, year-round comfort in your San Diego, CA home can be challenging. Many homeowners face hot, stuffy rooms during summer and cold spaces in winter, all while energy costs rise. Traditional central HVAC systems often underperform, forcing you to heat or cool the entire house to make one room comfortable. This approach is inefficient and costly. At West Coast Heating Air Solar & Plumbing, we provide a smarter alternative, the ductless mini-split system, offering exceptional efficiency, energy savings, and customizable comfort through professional installation.

A ductless mini-split heat pump system delivers precise zoned heating and cooling for individual rooms or areas. This means you control comfort where you need it most while saving energy by avoiding conditioning unused spaces. For San Diego, CA’s mild climate with warm days and cool evenings, mini-splits are ideal. You can cool a sunlit living area in the afternoon while maintaining a comfortable temperature in bedrooms at night, all with whisper-quiet operation and superior energy efficiency.

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West Coast technician greeting a homeowner at her front door

West Coast Heating Air Solar & Plumbing service van

Service call

when we do the repair

Your service call fee is waived when you choose us for the repair while the technician is there. West Coast Club members pay no service call fee when work is performed.

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What we do

Repair, maintenance and installation

Most mini-split problems are repairs, not replacements.

Signs your mini-split needs repair

Technician servicing a wall-mounted ductless mini-split indoor unit

Mini-split repair

We check the indoor unit, the outdoor unit and the lines between them, then fix what’s actually wrong.

Mini-split repair

West Coast technician servicing a wall-mounted mini-split indoor unit

Mini-split maintenance

A yearly cleaning catches a clogged filter, a dirty coil or a slow drain.

Book maintenance

Woman relaxing on her couch under a wall-mounted mini-split

Mini-split installation

Add heating and cooling to an addition, a garage conversion or any room your ducts don’t reach.

Mini-split installation

A craftsman home at dusk with warm glowing windows

Your visit

What happens when our technician arrives

We arrive ready to workLicensed, insured, and respectful of your home.
We show you what we foundYou see the problem and hear what it means in plain language.
You see the price firstYour options, with labor and parts listed separately, before any work begins.
We repair, test and clean upWe test the system before we leave and clean up the space.

Every repair is backed by our lifetime labor warranty on qualifying repairs and our 100% Satisfaction Guarantee. If anything isn’t right, call us and we’ll make it right.

Current offers

More ways to save on your mini-split service

Take advantage of our latest offers and get even more value from West Coast.

Water Heater Special

$500 Off
Any Water Heater Installation

On a new water heater installation. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

New Customer Special

$79 AC
Tune-Up
& Safety Inspection

New customers only. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

Comfort & Peace of Mind

Lifetime Warranty
On Labor

Qualifying system installs and repairs. Transferable. Terms apply. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

New Customer Special

$29 Heating
Tune-Up
& Safety Inspection

New customers only. Extends system life, improves efficiency, prevents costly repairs. Mention this offer when booking. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

Financing Available

0% Interest
For 24 Months

On qualified equipment. On approved credit. Details at consultation. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

Fall Savings

$1,500 Credit
A/C Trade-In

Toward a new A/C system. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

First Visit Special

Free Service Call
With Any Repair

$0 dispatch fee with any completed repair. First-time customers only. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

Why West Coast

Why homeowners choose West Coast

Family-run since 1996, serving San Diego County homeowners from El Cajon.

5-starrated on Google, Yelp, Facebook and BBB

Since 1996family-run in San Diego County

Same dayrepairs on most services, 7 days a week

Lifetimelabor warranty on qualifying installs and repairs

100% Satisfaction Guarantee

“Vlad was incredible! He was on time, the ultimate professional, knowledgeable, patient with my questions, and went above and beyond to make sure my service was impeccable!”

Nancy Scornavacco, Google review

“Amazing service! Eric with West Coast did a fantastic job. Very prompt, immediately diagnosed the issue I was having and offered varying solutions to ensure I have a comfortable option.”

Tim Palmer, Google review

“Eric Young did a great job of explaining the possible solutions to my HVAC problem. I felt very comfortable and was so pleased to feel like I had options, with no effort to “hard sell” me.”

Susan Little, Google review

FAQ

Mini Split Installation in San Diego, CA: questions and answers

Our Comprehensive Mini Split Installation Process

At West Coast Heating Air Solar & Plumbing, our installation process ensures your system’s optimal performance and longevity. A flawless setup is essential to achieve efficiency, durability, and the comfort you expect. Our certified technicians follow a meticulous, step-by-step approach to ensure every mini-split installation in San Diego, CA meets the highest standards.

Step 1: Thorough In-Home Consultation

We begin by understanding your unique comfort needs. Our experts visit your home for a detailed consultation to assess your goals and evaluate your home’s layout, insulation, and electrical capacity. We take the time to discuss your challenges and expectations, ensuring the system we design fits your home perfectly.

Step 2: Custom System Design and Sizing

Next, we perform precise load calculations to determine the correct system size. A properly sized mini-split system ensures efficient performance and comfort. Whether you need a single-zone system for one room or a multi-zone solution for the entire home, we create a custom design. Our technicians determine optimal placement for both indoor and outdoor units for peak aesthetics and performance.

Step 3: Meticulous and Respectful Installation

On installation day, our licensed professionals arrive prepared to complete your installation with minimal disruption. We protect your home using drop cloths and maintain a clean workspace throughout the process.

Secure Mounting: Properly installed indoor and outdoor units for stable, noise-free operation.
Core Drilling: A small, precise opening through an exterior wall connects both units seamlessly.
Line Set Connection: Refrigerant lines, electrical wiring, and condensate drains are routed neatly in protective conduits.
Electrical and Refrigerant Work: All connections and refrigerant charges are completed according to manufacturer standards for peak efficiency.

Step 4: System Commissioning and Homeowner Orientation

After installation, we thoroughly test the system for proper airflow, temperature consistency, and drainage. We guide you through operating your new mini-split, including how to use features like timers and sleep modes, and explain simple maintenance tasks like cleaning filters. For more comprehensive maintenance, we recommend our Maintenance Plan to keep your system performing efficiently year-round.

Single-Zone vs. Multi-Zone Systems: Finding the Right Fit

Ductless mini-split systems are highly flexible, available in single-zone and multi-zone configurations to suit your specific home setup.