Guthrie and Sons | Heating & Air San Diego

Ductless Minisplit Installation

If your home does not have the proper layout to install ductwork for a central HVAC system, or, you want to easily control the temperature in each room of your house individually, a ductless mini split system is the perfect heating and cooling solution for you. Call us or book your appointment online for a free quote on a single or multi-zone ductless mini split system.

Ductless Minisplit Installation Services

No ducts? No problem. An all-in-one heating and cooling solution for you.

If you have an older home or perhaps your home’s layout does not allow for ductwork to be installed, a ductless mini split system is the perfect solution for your heating and cooling needs. Ductless mini split systems consist of an outdoor unit connected to your indoor head 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 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 air system to keep your customers comfortable. Whether it’s located 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 system is the ideal solution for you. Install a zone (also known as a head unit) in each room of your business, allowing you to climate control 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, the first time. You don’t want your heating and air system to fail during business hours. Contact the experts at Guthrie & Sons to book an appointment for a free estimate on a new installation.

How Do Ductless Mini Splits Work?

Mini split heating and cooling systems work without the presence of any 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 & conditioned air around the installed space, and the outdoor unit throws out the absorbed heat into the external atmosphere. Both 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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Take the Next Step with Guthrie

If you have questions on what heating and cooling system is right for your home, or, 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 at (619) 269-3013 or book a free estimate online today.

Ductless Mini Split Benefits


Mini split systems are typically more energy-efficient than central split systems. Many mini splits boast high SEER ratings. A SEER rating is an industry standard for measuring the efficiency of air conditioners.

The SEER ratings for mini split systems usually range between 18-30 SEER. Systems 16 SEER or greater are considered high-efficiency. 


The beauty of ductless systems is that no ductwork is needed. Instead, they use copper line sets to run the refrigerant to the indoor units. 

The lack of ducts makes these ventless air conditioner systems an especially smart choice for when installing ductwork would be too costly or unnecessary. Mini splits offer an easy workaround.


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.


Ductless mini split systems have sound ratings as low as 19 dB for the inside unit. With sound ratings that low, it means that they can operate quieter than a whisper. This allows you to stay comfortable without being distracted by annoying noises.




The Guthrie Way

Why Choose Us

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


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 5-star quality service in every aspect of our work.


With decades of experience in the HVAC industry, our team of 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 will 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 you with the services you need, without any unnecessary extras. Trust us for HVAC solutions that prioritize your comfort and your budget.



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

Arturo TorresArturo Torres
02:01 14 Jun 24
Colin PremdasColin Premdas
20:03 13 Jun 24
Juan was on time, professional and courteous. Highly recommended
Gary LovelyGary Lovely
18:31 13 Jun 24
Rob was very professional and answered all of my questions around the service process. He cleaned up after himself and provided suggestions for prolonging the performance of my AC unit.
Will KnightWill Knight
20:21 11 Jun 24
Quick efficient A/C tune up
San Diego DermatologySan Diego Dermatology
19:59 11 Jun 24
The technician was on time and very courteous. He explained everything thoroughly in layman’s terms and took pictures. He emailed me the pictures and summary of his findings. I would highly recommend this company.
Monica MoraMonica Mora
16:47 11 Jun 24
Jonathan S was great.Definitely recommend Guthrie.
Diane RueschDiane Ruesch
01:47 11 Jun 24
Lorraine RiehmanLorraine Riehman
18:59 10 Jun 24
Thomas AristideThomas Aristide
17:59 09 Jun 24
Jonathan was punctual and addressed both my concerns as well as noted additional items he found during service. Another great service from Guthrie and Sons.
Chad GongChad Gong
17:50 09 Jun 24
Knowledgeable, professional, honest!
Tanya DTanya D
22:18 07 Jun 24
Marilyn RutlandMarilyn Rutland
16:33 05 Jun 24
This was my second annual maintenance for my mini -split system and what a good experience it was. Jonathan was on time, explained the process and was very patient with my questions. From shoe coverings to explanations, Jonathan provided excellent service.
16:29 05 Jun 24
Kelli IlvesKelli Ilves
18:54 04 Jun 24
I requested quotes from 4 different businesses and received 4 different strategies on how to install mini split AC systems in our house. Guthrie & Sons Tech Vlad came up with the most logical and smart strategy on how to install the units on our house. It became clear that he is very knowledgeable and puts in actual thought on how to solve this installation. The Technician is highly trained, knowledgeable and has great soft skills. He answered all my questions well. The quote was competitive, however not the cheapest. The competence was far above the competition, hence we went with them. They were respectful with installation and machines have been running great a year later. There are minor issues with the units that are addressed a year later during the annual maintenance visit by another highly skilled Tech Johnatan. Overall, very happy with the performance of the units and the customer service. I recommend this company without a doubt!
Sandy DavisSandy Davis
19:56 03 Jun 24
Jonathon performed the annual maintenance on system purchased frim Guthrie last year. He was efficient, thorough, had great communication skills and a cheerful disposition. Guthrie & all employees we’ve encountered thus far are tops!
Derek AllenDerek Allen
20:21 02 Jun 24
Jonathan S. continues the stellar service we get from Guthrie & Sons as they install and maintain our HVAC systems.
22:47 29 May 24
Jonathan explained all aspects of what he was doing, took his time to make sure everything was in tip top shape after he repaired AC& Heating unitI have no problem in recommending your company.
M GreenM Green
03:30 29 May 24
As always, Great, from initial phone call, to punctuality and completion
Pamela JonesPamela Jones
20:27 28 May 24
Juan was very professional and very helpful, I was glad to see him again.
chris Rchris R
16:12 28 May 24
The serviceman was on time and very professional. I will recommend them to friends and family or anyone who asks in the future. I highly recommend!

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