San Diego, CA Ductless AC
Spend Less to Stay Cool
Whether you’re updating an older home, converting a garage, or just want better comfort control room by room, ductless mini splits give you powerful heating and cooling without the need for ductwork. Call us for a free quote on a ductless air conditioner or schedule service for an existing unit online.
Need Ductless Mini Split Services in San Diego? We Do It All!
Ductless mini splits are everywhere in San Diego, and we love what they bring to the table. From older homes and garage conversions to guest suites, home offices, and business buildings, these systems fit right in! Ductless mini split units are compact, quiet, and energy efficient. Best of all, they don’t rely on air ducts, so you can install them just about anywhere you need AC.
If you’re thinking about installing a ductless air conditioner, Guthrie & Sons Heating, Air & Solar can help you find the right system and get everything set up in no time.
Already have a ductless system? We bet you’ve been enjoying everything they have to offer! But like any HVAC system, they need regular upkeep and only last so long. If yours is due for service, needs a repair, or is ready to be replaced, just let us know. Call now or schedule online for trusted ductless mini split services in San Diego, CA. Family-owned. Fast service. Fair prices. Everything you both want and deserve!
Know What You’re Paying for (And How to Save More)
We know you have questions, and “how much does a ductless mini split cost?” is usually the first one. The answer depends on a few things, like how many zones you need, the size of your space, and the system that fits best. We break it all down for you so you know exactly what you’re paying for. No hidden fees, no last-minute add-ons—that’s not how we do business. With us, you can expect:
- Free in-home estimates so you’ll know your mini split pricing right up front
- Free online quoting tool for ductless mini split installs and replacements
- Help applying for available tax credits and rebates to reduce your total cost
- Seasonal specials and limited-time offers to help you save even more
- Financing options with monthly payments so you can get started now
Plenty of mini split companies will sell you a system. We make sure you get the one that fits your wants, your needs, and what you’re ready to spend. Schedule a consultation today!
Protect Your Mini Split Air Conditioner With a Maintenance Plan
Your ductless mini split may be small, but it does a big job every day—cooling one room, five rooms, maybe your whole house! And since it works as a full heating and cooling system, it doesn’t get much of a break. If you don’t give it the TLC it needs, sooner or later it’ll remind you.
Usually on the hottest day of the year. Usually, when you’ve got people over. And usually, when every HVAC company in town is booked out for days.
That’s why we offer the USA Membership. It keeps your system clean, improves energy efficiency, and ensures all parts are in good shape. You’ll get automatic tune-up reminders, discounts on services, priority scheduling during busy times, and other perks. One visit a year saves you a heck of a lot of trouble later.
And if your ductless system is under warranty, that annual maintenance isn’t optional—it’s required. We help you stay covered, save money, and avoid the stress of surprise breakdowns. No one wants to spend a summer weekend with no AC. Let’s protect your investment and peace of mind. Talk to our team about signing up!
Reliable Ductless Services in Your San Diego Neighborhood
At Guthrie & Sons, we install and maintain ductless mini split systems across San Diego County, including homes and businesses in Chula Vista, Oceanside, Escondido, Carlsbad, Vista, and La Mesa. We’re also regularly out in neighborhoods like La Jolla, Mission Hills, and San Ysidro.
Whether you’re cooling individual rooms, working around existing ductwork, or trying to stop wasting energy, ductless systems are a smart solution. Explore our affordable ductless air conditioning services below and let us know how we can help.
Mini Split Installation
A mini split installation lets you create separate cooling zones throughout your home without adding ductwork. The system connects one outdoor unit to indoor air handlers using a refrigerant line that runs through a small hole in the wall. Each indoor unit controls its own space with a remote control, so you’re not wasting energy cooling rooms you aren’t using. Most units are typically mounted on the wall, but some can be installed in the ceiling depending on the layout.
They work especially well in San Diego homes for guest rooms, converted garages, garage apartments, additions, offices, and older houses where a ducted system can be difficult to install. Compared to window units, they’re quieter, more efficient, and do a much better job keeping rooms comfortable year-round.
Mini Split Maintenance
Mini split maintenance helps your system keep up with daily heating and cooling without losing performance over time. During service, the indoor air handlers, filters, coils, drain lines, and outdoor units are cleaned and inspected to keep the air conditioning system running properly. Refrigerant levels, airflow, electrical parts, and system controls are also checked to catch small problems before they turn into expensive repairs.
Regular maintenance helps your mini split AC system deliver more efficient cooling, better airflow, and more consistent temperatures from room to room. It can also help lower energy use and reduce wear on important components. If you want your home heating and cooling system to last longer and run more reliably, yearly maintenance has a huge impact.
Mini Split Replacement
In San Diego, a ductless heat pump works well year-round since it can cool your home during warm weather and provide heat when temperatures drop at night. A mini split air conditioner also does a great job handling our long stretches of 70-, 80-, and even 90-degree weather. Even though most ductless mini splits last around 15 to 20 years, there comes a point when repairs add up and performance starts slipping.
If your system is struggling, we install trusted brands like Mitsubishi Electric and Daikin with newer models that are quieter, more efficient, and better at controlling temperatures from room to room. We’ll help you find the right mini split replacement and get everything installed quickly.
Not Just Another Ductless Mini Split Company—We’re a Family Caring for Yours
Guthrie & Sons started back in 2005 with a couple of trucks, a small team, and a simple way of doing business: treat people right, do solid work, and stand behind it. A lot has changed since then, but that part hasn’t. We’re still family-owned, still focused on honest service, and still the kind of company that believes good work speaks for itself.
We also believe great service starts with the people doing the work. That’s why we invest in our technicians with training, support, and the right tools so they can take their time and do things properly. No rushed jobs. No pushy sales talk. Here’s more of what you can expect from our local San Diego ductless mini split service company:
- 100% Customer Satisfaction Guarantee: If something’s wrong, we’ll make it right.
- Upfront, Honest Pricing: We explain the cost clearly before any work begins.
- Expert Technicians: Our NATE-certified technicians have advanced certification.
- Family-Owned: We’re one of the last family-run HVAC companies in the area.
- Lifetime Workmanship Guarantee: When we install something, we make sure it lasts.
- 2-Year Labor Warranty: Every new installation comes with a 2-year labor warranty.
- Free Quotes on New Systems: We’ll come out and provide all of the pricing upfront.
- Convenient Financing Options: We offer payment plans so you have a path forward.
- Property Protection Guarantee: From drop cloths to clean-up, we protect your space.
If you want to see what ductless heating and cooling can do for your home, we’d love to help you get started. And if your current ductless split system needs service, just give us a call or schedule online—we’ll take good care of you.
Frequently Asked Questions
Are ductless air conditioners any good?
Absolutely. A ductless air conditioner is one of the easiest ways to get comfortable cooling without tearing into your house for ductwork. They’re quiet, efficient, and great at delivering conditioned air right where you need it. A lot of San Diego homeowners love them because they help keep energy consumption lower while giving each room its own temperature control.
What are the disadvantages of a ductless AC system?
The biggest drawback is usually the upfront price, especially if you want multiple zones throughout the house. Some homeowners also need time to get used to seeing the indoor wall units instead of hidden vents. But once the system is up and running, most people end up loving the comfort and lower energy costs.
Do you need ductless AC in every room?
Not at all. Some homeowners use a home ductless air conditioner setup for just one problem area, while others build out multiple zones across the house. It really depends on how you use the space and where you want better airflow.
What are the advantages of a ductless AC system?
A ductless cooling system gives you room-by-room control without relying on ductwork hidden behind walls and ceilings. Because it’s a duct-free air system, you don’t lose cooled air through old or leaking ducts like you can with some central systems. Installation is usually cleaner and faster than putting in a full split-system air conditioner, and the systems are known for running quietly.
How much does a ductless air conditioner installation cost?
The cost of ductless air conditioning depends on how many zones you want, the size of the space, and the type of equipment you choose. A single-room setup will cost less than a larger multi-zone cooling system for the whole house. We’ll take a look at your space and give you clear pricing before anything moves forward.
Are ductless systems hard to maintain?
Not at all. Most ductless systems just need basic yearly maintenance to keep everything running smoothly. Cleaning the filters, checking the indoor and outdoor units, and making sure airflow stays strong can go a long way. A little upkeep now helps prevent bigger repairs later and keeps your system cooling the way it should.
Heating and Cooling Offers You Can't Miss
Big savings, same great service. See what offers are available now for our favorite customers.
- INSTALLATION
$625 Comfortably California Rebate
Valid on select systems. Valid on residential properties only. Can be combined with HEERHA rebates, $2,000 heat pump Federal Tax Credit and $600 electrical upgrade Federal Tax Credit. Rebate available until funds last. Restrictions apply. See dealer for details. Offer expires 7/31/2026.
- INSTALLATION
0% APR for 24 Months
Get 0% APR financing for 24 months on a new heating or air conditioning installation. 0% interest with 24 equal monthly payments.
Financing subject to credit approval. Valid on select systems only. Valid on residential properties only. Cannot combine with other offers. Must mention promo at time of estimate appointment. Restrictions apply. See dealer for details. Offer valid for an estimate appointment scheduled before 7/31/2026.
- REPAIR
Free Diagnostic w/ a Repair
Your diagnostic service call fee will be waived if you proceed with a repair.
Cannot combine with other offers. Restrictions apply. See dealer for details. Offer expires 7/31/2026.
- WATER HEATER
Free Estimate on a New Heat Pump Water Heater Installation
Valid for an estimate for a new hybrid heat pump water heater installation or replacement.
Restrictions apply. See dealer for details. Offer expires 7/31/2026.
Real Reviews From Real Customers
We do things differently, and our customers appreciate it. See what some of our thousands of satisfied customers have to say about working with us.


Please congratulate them for a job well done!





We worked with Vlad T., who had previously been out to our home and saved us tens of thousands of dollars by getting our existing AC unit up and running when other companies were pushing for a full replacement. That experience alone earned our trust.
Now that we’re finally ready to purchase new units, there was no question that Guthrie & Sons was the only company we would consider, and Vlad was the obvious choice. He was extremely professional, punctual, and exceptionally knowledgeable, taking the time to explain options clearly and thoroughly. His expertise and honesty made the entire process straightforward and stress-free.
If you’re looking for an HVAC company you can truly trust—one that values integrity, quality workmanship, and customer service—I cannot recommend Guthrie & Sons and Vlad T. highly enough. This is how service should be done.




I only wish the annual service was cheaper 🙂




Zach M. came by and installed on new one. He was extremely professional and completed the installation promptly.
This was another great experience all around and I gladly recommend Guthrie and Son's for all your HVAC needs.

From start to finish, their team was outstanding. They worked incredibly hard, treated our home with respect, and left everything spotless—truly the cleanest job site I’ve ever seen after a major project. The installation itself was seamless, and the quality of their work shows in every detail.
If you’re looking for a company that combines deep knowledge, excellent craftsmanship, and genuine care for their customers, Guthrie & Sons is it. Absolutely five stars across the board!


What really stood out was his problem-solving ability and willingness to go the extra mile to ensure everything was operating as it should. He communicated clearly throughout the process, kept us updated, and made sure we felt confident in the work being done.
It’s not often you come across someone who combines technical expertise with such a strong work ethic and positive attitude. We’re very grateful for his efforts and would highly recommend Kareen to anyone needing reliable HVAC service.

Vlad came out to provide an estimate and was able to size an HVAC system that worked well for my house.
They installed it quickly, without issue and helped me set up an app on my phone to control.
The system is working great to heat and cool my house and is whisper quiet.
Highly recommend going with Guthrie and Sons if you want a high quality experience for large and important purchases.

Schedule Your San Diego Ductless Mini Split Service Today
At Guthrie & Sons Heating, Air & Solar, we help homeowners find the best ductless air conditioner for their space, layout, and budget. Our licensed and insured technicians know these systems inside and out, and we take the time to make sure everything is installed and running properly. Whether you need repairs, maintenance, or help planning for the future, we’re here to help you decide what works best for your home.
We provide ductless heating and cooling services throughout San Diego, including Mira Mesa, Clairemont, Rancho Bernardo, Pacific Beach, and nearby neighborhoods. Give us a call or use our website to schedule service today.
