Guthrie & Sons HVAC

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!

Gene FischerGene Fischer
16:53 22 Feb 24
Rick was very helpful in giving my Tenant and me another tutorial on operating the Thermostat for the Heat Pump. This Tutorial provided some simple yet essential information as to the basics of the thermostat's operating options.Rick was also helpful in advising me that the return vent filter should be changed every six months, as well as getting the measurements of 14" X 24" for the correct size of the filters to purchase.He was courteous, used his shoe covers consistently, and suggested I consider purchasing Guthrie and Sons' Maintenance and Service Plan.I would appreciate details of the cost and benefits of the Plan.My overall message is one of appreciation for such prompt response to my call, next day scheduling, and expert service delivered by rick.KUDOS TO ALL OF YOU AT GUTHRIE AND SONS, and congratulations on your growth and new home for the business.Gene Fischer
Jennie CJennie C
01:34 21 Feb 24
I have used this company for my heating and cooling service for many many years. Just decided to purchase a new system and Guthrie & Sons gave me a great price, thank you Zach!
Gary HuberGary Huber
00:16 21 Feb 24
Kyle OlsonKyle Olson
17:33 20 Feb 24
Always a pleasant and professional experience. Reliable and straightforward.
Dana FaassenDana Faassen
20:26 19 Feb 24
Sam was excellent! Very knowledgeable, efficient and courteous- Taking time to answer all my questions and renewing our maintenance contract for our heating and cooling- Love Guthrie and Sons!
Matthew BallMatthew Ball
19:50 18 Feb 24
Just top notch professional work, great pricing. Five stars! Everyone should go to Guthrie for their AC needs
Boz KamyabiBoz Kamyabi
05:32 18 Feb 24
Professional and performed the work well.
Pat DrummyPat Drummy
18:06 17 Feb 24
Juan is great and knowledgeable
Greg HowardGreg Howard
05:51 17 Feb 24
Very responsive to my service request. Dave diagnosed the issue quickly and corrected the situation so that the failure will be less likely to happen again. He explained the additional repairs which were necessary. Guthrie ordered the part and quoted the job the following day.
Matt O'MearaMatt O'Meara
00:29 17 Feb 24
Jonathan came for our pre-paid maintenance visit. Very professional, friendly informative
Miff LaracyMiff Laracy
22:08 16 Feb 24
More than once I have had Guthrie and Sons come out for heater issues and they have solved the issues every time, given honest assessments, and offered reasonable costs. I will use them more in the future.
Rand SmedleyRand Smedley
17:28 15 Feb 24
I have been using Guthrie & Sons Heating and Air since I moved to San Diego over 10 years ago now . When I later relocated to the far north county area I was happy they served customers that far away. They’re always on time, professional and reasonable on price. What else could anybody ask for?
Michael HollinsMichael Hollins
18:57 14 Feb 24
Professional service
Carol HamiltonCarol Hamilton
01:30 13 Feb 24
Excellent maintenance visit. Thank you Rich!
Mike TristaniMike Tristani
20:32 12 Feb 24
Got the job done!
William HillWilliam Hill
17:20 12 Feb 24
Jonathan was an excellent technician. He explained everything and was very polite and efficient.
Jenna PetersonJenna Peterson
17:14 12 Feb 24
Beverly SumwaltBeverly Sumwalt
18:33 09 Feb 24
Polite , provided efficiency and expertise and good customer service.
20:38 08 Feb 24
Prompt, courteous, efficient, knowledgeable, and gave great explanations
Cleve HardakerCleve Hardaker
21:55 07 Feb 24
Rich called ahead as promised and showed up right on time.His inspection was thorough and he installed a new filter.He got it done in time to beat the rain!

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