Ductless Mini-Split Services in San Diego

If your home doesn’t have the proper layout to install ductwork for a central HVAC system, or if you want to easily control the temperature in each room individually, a ductless mini-split system is the perfect heating and cooling solution for you.

Call us or schedule your appointment online for a free quote on a single or multi-zone ductless mini-split system.

Our Ductless Mini-split Services

No Ducts? No Problem: An All-in-One Heating & Cooling Solution

If you have an older home or your home’s layout doesn’t allow for ductwork, a ductless mini-split is the perfect solution for your heating and cooling needs. Ductless mini-split systems consist of an outdoor unit connected to your indoor units, which are installed in various rooms of your house. These convenient, multi-zone systems allow you to individually control each room of the house, making it an ideal and energy-efficient solution for many San Diego homeowners.

Residential Ductless Mini-Split Installation

When you’re looking for a heating and cooling system, a central split system might first come to mind. But, what if the layout of your home doesn’t allow for ductwork to be installed? The solution is easy – a ductless mini split system. Ductless systems allow you to heat and cool your home and gives you climate control for each zone.

If you need help determining whether a central or ductless system is right for your home, we’re here to help. Our certified technicians will evaluate the layout of your home, discuss your home comfort needs, and provide the perfect solution for you.

Commercial Ductless Mini-Split Installation

When it comes to your business, you want a reliable and efficient heating and AC system to keep your customers comfortable. Whether it’s in a free-standing building or in a shopping center, depending on where your business is located, your building may not have the necessary configuration to install a central split system with ductwork.

A ductless mini-split is the ideal solution. Install a zone (also known as a head unit) in each room of your business, allowing you to control the climate of each room individually. Ductless systems both heat and cool, so no additional heating or cooling units are needed.

Commercial HVAC systems are complex and require certified technicians to ensure a perfect installation. You don’t want your heating and AC system to fail during business hours. Contact the experts at Guthrie & Sons Heating, Air & Solar to schedule a free estimate on a new installation.

Ductless Mini-Split Repair

When your ductless mini-split system breaks down or stops performing efficiently, it can leave you uncomfortable in the San Diego heat. Prompt and professional repairs are essential to restore your system to peak performance. Our experienced technicians specialize in diagnosing AC issues and repairing ductless mini-split systems, ensuring you get back to enjoying consistent, efficient cooling.

We pride ourselves on delivering fast, reliable, and affordable ductless mini-split repairs. Whether you’re dealing with an unexpected breakdown or noticing gradual performance issues, our team is ready to help. Don’t let a malfunctioning system compromise your comfort — contact us for expert repair services that will keep your ductless mini-split operating smoothly all year.

How Do Ductless Mini-Splits Work?

Mini-split heating and cooling systems work without needing ductwork. These types of systems consist of two separate units: an outdoor compressor and an indoor unit.

The indoor unit is responsible for introducing cool and conditioned air around the installed space, and the outdoor unit throws the absorbed heat out into the external atmosphere. The indoor and outdoor units are connected through a small hole in the wall.

One of the major benefits of a ductless system is that each indoor head unit (also known as a zone) can be controlled individually.

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Current Offers

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German Engineering. Designed to Last. Only from Bosch.

German-engineered and built to last, our line of Bosch ductless mini split systems are the ideal solution for homeowners who want to maximize energy-efficiency and need individual climate control. Due to the nature of its’ design, Bosch mini splits allow you to both heat and cool your home. Install a head unit in any room of your house to allow for individual climate control. Bosch mini split systems are the perfect solution for:

Home additions: Building a new ADU or home office conversion in your garage? Bosch mini splits are the perfect solution for home additions. Install a single zone system for individual climate control.
Conserving energy: You can install a Bosch mini split head unit in any room of your house allowing you individual climate control. Only want to heat or cool the room you’re currently in? This is the ideal solution for you. Homeowners can opt to heat/cool only their office space during work hours and heat/cool only their master bedroom during nighttime.
Homes with no space for ductwork: Depending on your home’s layout, you may not have room for ductwork which is necessary for traditional, central HVAC systems. Bosch mini splits do not require ductwork making it the perfect solution for homes without attics or crawlspaces.
Budget conscious homeowners: Federal tax credits and rebates are available on Bosch mini split systems. In addition, mini splits are a great solution for homeowners looking to keep their installation costs low as you can prioritize heating or cooling a single room or just a few rooms, versus your whole house.

Take the Next Step With Guthrie & Sons

If you have questions about which heating and cooling system is right for your home, or if you’re ready to take the next step in maximizing energy efficiency, Guthrie & Sons Heating, Air & Solar is here to help.

Give our office a call or schedule a free estimate online today.

Bosch Climate 5000
Ductless Mini-Split Benefits

HIGH-EFFICIENCY

Delivering up to 25 SEER rating, the Bosch Climate 5000 is an ultra-efficient mini split system offering the perfect climate control year-round.

ULTRA-QUIET OPERATION

Known for their ultra-quiet heat pump systems, Bosch’s Climate 5000 is no exception – operating as low as 20 dBa.

ZONE CLIMATE CONTROL

Multi-zone mini-split systems allow you to keep each zone at a different temperature, giving you the power to control the temperatures throughout your house easily and exactly the way you want.

INCREASE INDOOR
AIR QUALITY

Bosch mini splits have a multi-part air filter system that cleans the air and reduces potential allergens & odors.

PROMOTIONS

CURRENT OFFERS

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 8/29/25.

INSTALLATION

Free Estimate on a New Installation or System Replacement

Valid for an estimate on a new heating, air, or solar installation or replacement.

Restrictions apply. See dealer for details. Offer expires 8/29/25..

MAINTENANCE

$129 A/C Tune Up

Valid on a central heating or air conditioning system. Price is per unit. Unit must be operating at time of service. Cannot combine with other offers. Restrictions apply. See dealer for details. Offer expires 8/29/25.

The Guthrie Way

Why Choose Us?

As a family-owned company with our name on the line, we take pride in our work.

Family-Owned

Guthrie & Sons is family-owned and -operated for two generations. We take pride in treating each customer with the dedication, quality, and care you deserve.

5-Star Service

We take pride in setting the gold standard for HVAC service. Our dedicated team of experts is committed to delivering nothing less than five-star quality service in every aspect of our work.

Expertise

With decades of experience in the HVAC industry, our seasoned professionals know heating and cooling inside and out. Our expertise shines through in every installation, repair, and maintenance service we provide, ensuring your home stays comfortably climate-controlled.

Honest Pricing

As a family-owned company, we aim to keep costs as low as possible for our customers. When you partner with us, rest assured you'll receive expert service at an affordable, competitive price.

No Upsells

We believe in straightforward, no-nonsense HVAC service. When you choose us, you won't encounter any upsells or hidden fees. We're committed to providing the services you need, without any unnecessary extras. Trust us for HVAC solutions that prioritize your comfort and budget.

OUR REVIEWS

FROM OUR CUSTOMERS

Don’t just take our word for it. See what over 850+ customers have to say about working with us!

Meghan Venanzi

23:31 22 Jul 25

We were incredibly impressed with the prompt and professional service! We called on a Saturday morning, and within just a few hours, a technician was at our home. With the recent heat, getting our AC back up and running was a top priority—and they delivered! Mario clearly explained our options and provided a hassle-free solution that was both quick and effective. The repair was completed shortly after we gave the go-ahead. We’ll absolutely be using them again for any future HVAC needs. Highly recommend this company for their affordability, efficiency, and friendly service—we’re already telling our family and friends! Thanks again Guthrie & Sons!

Laurie Edwards

22:10 16 Jul 25

We were very happy from start to finish. Vlad did a great job in helping us decide what would be best for our house and our needs and the installation crew were the very best. Thank you Guthrie and Sons for a job well done.

Patrice Makovic

17:45 09 Jul 25

Last summer, I used Guthrie and Sons to replace my heating system with a new one and added an air conditioning unit. We also added two different zones in the house to be able to turn the system on independently from one zone to another. From the first contact to the six month maintenance visits, everything has gone smoothly. There were a couple of hiccups, but the company is very responsive and I have never had an issue with them not promptly responding and taking action to figure out and solve any problem. I highly recommend this company.

Carrie Reese

17:06 08 Jul 25

Guthrie & Son's did an amazing job on our new AC units. From sales through install they were all knowledgeable and helpful. They were very quick to get us all setup and when our home posed some unexpected issues they were able to pivot quickly and resolve them. I'd highly recommend them!

Kenneth Adelson

16:04 07 Jul 25

Had use Guthrie in the past for HVAC service, this time had them install a solar attic fan and additional vent. The service, as it had been the first time, was professional, polite, and on schedule. Pricing was fair (and consider that they offered a repeat customer discount without having to be asked). Would be happy to use them again when the need arises.
I offer 4 stars because I'm not a grade inflation sort. Three is sufficient, four is better than average. Five is reserved for knock my socks off amazing in ways I didn't expect - doesn't happen very often.

Patrick Smith

21:42 27 Jun 25

We had central heat and air put in two a year and a half ago. We've need to make a few adjustments to airflow to rooms since then. Each time, they are onsite withing 1-2 days and have resolved the issue each time. Their team is professional and incredibly friendly and knowledgeable. Very happy we went to Guthrie & Sons.

Bennie Beans

15:41 12 Jun 25

Mario was knowledgeable and courteous. He made sure our system would be sized right and that our existing ductwork was able to support the new system. The install team were prompt and efficient. They installed drop cloths and cleaned up inside and out after the job. So far I’ve been very happy with the work Guthrie and Sons have done for us.

Chris Toogood

21:52 06 Jun 25

Great local family business. And you actually get a live person when you call... And the technician was great and they come out quickly. No up selling too. He gave me two different price options on fixing my problem... band aid cheaper way or replacement. Great service.

Nick Schoch

17:58 27 May 25

Jonathan recently inspected the HVAC systems at both my front and guest houses, and I couldn’t be more impressed with his service. He was thorough in his assessment, clearly identifying areas of concern and explaining the recommended repairs in a way that was easy to understand. What stood out most was his honesty and patience—he took the time to answer all my questions without rushing, and I genuinely felt he had my best interest in mind. If you're looking for someone who is knowledgeable, professional, and respectful of your time and property, I highly recommend asking for Jonathan.

Neil Domingo

17:24 15 May 25

If you’re dealing with an AC issue, Mario is definitely one of the best! He quickly diagnosed the problem, worked efficiently, and provided a thorough solution. His expertise and professionalism were clear throughout the entire process. Highly recommend Mario for anyone looking to resolve their AC issues with a reliable and skilled technician.

Phil Lane

17:18 10 May 25

Guthrie and Sons has provided great service. There are many HVAC companies in San Diego to choose from. They provided a very reasonable estimate for replacing our two AC systems. Once we said yes installation happened within days. It was a quality install. They answer the phone quickly when I've had questions. Happy to refer them to others.

Dianne Haase

20:57 02 May 25

Great customer service, technicians always on time and friendly. I’ve had my new hybrid heat pump for a few years and Guthrie & Sons are very proactive making sure everything is running smoothly. Very happy in my decision to use them!

Andrea Kossoudji

01:11 30 Apr 25

Great service!! Jonathan was patient, kind, knowledgeable and extremely professional! I love Guthrie & Sons’ reminder system, notification of the technician enroute, the easy invoice system and immediate emailing of the findings, including detailed photographs of the work completed!! Highly recommend!

james beedon

20:47 23 Apr 25

Last summer my air conditioner couldn't cool the house in the hottest period of summer. The HVAC team I was working with came in and said the coils were leaking, the unit was 20 years old. I requested quotes from 5 different companies, and the variation of prices was huge. I went with Guthrie and Sons for these reasons:
1. Local Company
2. Family Owned
3. Great presentation, no pressure
4. Good products
5. Competitive pricing
Just installed yesterday, so jury is still out on the system, but installation was thorough and great communication so far!

Darius Degher

21:45 22 Apr 25

Carson and Michael were brilliant. The heat pump installation went smoothly, and they are really pleasant and trustworthy fellows. The day after it was installed, I had a plumber at my house. He looked at their work and was impressed. He said it was much cleaner than the way HVAC people usually do it.

Lito Ricasata

19:03 08 Apr 25

First time prospective client of Guthrie and Sons. Very responsive staff in providing updates on my calls. Mario F. came over to check out my existing cooling and heating system and is very thorough and professional in providing necessary information related to repair/upgrades. Pending his quote, my experience with Guthrie and Sons is top notch and most highly recommended.

Updated review: Kareen, Daniel and Michael worked on the AC replacement, relocation of furnace to the attic and replacement of ductwork. Very professional and knowledgeable team in my opinion. Completed the work in a timely and very satisfactory manner.

Michael Myers

00:19 25 Mar 25

My experience with Guthrie & Sons has been excellent, and I am pleased to write a very favorable review about it. They replaced three air conditioners and three propane furnaces with new equipment that utilizes heat pump technology. I had met with other companies and I was close to coming to a conclusion, when a friend recommended Guthrie & Sons. He told me that they are hyper focused on customer service from beginning to end.

Their customer service started with the on line completion of a basic information form. Shortly after submitting that form, I heard from Zach who scheduled an appointment at my home.

I had already met with three other HVAC contractors, and for that reason, I had some basic information about the systems available and how heat pumps work and whether propane furnaces should also be installed. I signed a contract on a Friday. By Wednesday of the next week they had completed the installation. Wow.

The installation of one of the furnaces in the attic caused minor damage to the drywall. THEY BROUGHT IT TO MY ATTENTION and told me a drywall contractor would be in touch regarding its repair. Two days later it was repaired.

Since installation, the equipment (heat pumps from Bosch) has been working great and I am optimistic about the future. Meanwhile, their pricing, warranty and terms are far superior to their competitors.

Since this is an unusually long review and so favorable, let me add this: This is my honest, uncompensated opinion. I have no relationship with anyone at Guthrie & Sons other than the contract we executed.

Tom H

15:21 20 Mar 25

We recently had Guthrie and Sons install a Mini-Split system in our home. The entire process was handled professionally with no issues occurring at any time. The estimator (Vlad) went through options with us but let us evaluate the best solution for us with zero pressure. The installation team (Matthew and Aaron) showed up on time, reviewed the scope of the job, made sure they understood what we wanted, and then proceeded to complete the installation exactly as discussed. They asked for my input as needed so there were no surprises when the job was completed.
They respected my property and made sure everything was left at least as clean was when they arrived. The job was completed on time and as promised and they reviewed the details of the system and its use clearly. I would definitely have Guthrie and Sons do other electrical/HVAC work should the need arise.

Mike Macias

19:43 19 Mar 25

I have been in the construction industry in San Diego for over 50 years. I owned my own contracting company for over 40 years. I have seen all levels of customer service in my years. The level of customer service from Guthrie and Son’s is among the best I’ve ever seen and received. Every time I hear anyone asking for a referral for HVAC work I immediately give them your number. When I recommend a company I in essence am putting my name and reputation on the line. I refer them with 100% confidence in the service they will receive. Thank you very much for your legendary service.

Scott Sypkens

23:32 11 Mar 25

We first hired Guthrie and Sons to replace a furnace after comparing proposals from several heating and air companies. They’ve since been back for annual check ups, and today Kareen came to diagnose and resolve an issue with our mini-splits. My experience each time, including today, is that they hire friendly, knowledgeable people who do good work. They’ve never tried to upsell or do anything unnecessary, which is the way it should be. I’d recommend them to anyone who asks.

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