HVAC Installation

HVAC Installation in San Diego County for Year-Round Comfort and Peace of Mind

Need an HVAC system for a new build, rental, or property you manage? We’ve got you! Whether it’s residential or commercial, Guthrie & Sons installs reliable systems at the right price—and we don’t stop there. We service what we install, so you’re never left wondering who to call when your system needs attention. When you choose us, you get local, licensed professionals who show up and do everything properly.

Get the Right HVAC System Installed by a Team You Can Trust

When you’re putting in a new HVAC system, you just want it to work—reliably, efficiently, and without constant headaches or high energy bills. Whether you’re building a new place, fixing up a rental, or upgrading a property you manage, you want a setup that makes sense for your space and budget.

That’s what we do at Guthrie & Sons Heating, Air & Solar. We’re a second-generation, family-owned company that’s been serving San Diego since 2005. Our NATE-certified technicians know this work inside and out—and we treat your install like we’d do it for our own house. We’ll help you pick the right system, get it installed right the first time, and be around if you ever need service. If you’re interested in an HVAC installation in San Diego County, give us a call or request a free quote online—we’re here when you’re ready!

Explore HVAC Pricing With Our Free Online Quoting Tool

Explore HVAC Pricing With Our Free Online Quoting Tool

Trying to figure out what a new HVAC system might cost—but don’t have time to meet just yet? We get it. That’s why we created a free online quoting tool you can use anytime. Just answer a few quick questions about your home, and we’ll give you a ballpark HVAC installation estimate to help you start planning.

If you’re ready later, we’ll follow up with an in-person visit to confirm everything. And of course, our in-home estimates are always free if you prefer to skip the form and meet in person. No pressure. No big sales pitch. Just info to help you make the right call for your home.

Need Help With Financing? No Problem!

Need Help With Financing? No Problem!

A new HVAC system is a major investment, and not everyone’s ready to cover it all at once. That’s why Guthrie & Sons offers flexible financing options to help make your new heating or cooling system more affordable upfront.

Have questions? Call us and speak with one of our friendly team members. We’ll walk you through your options and help you feel confident moving forward. A more comfortable home is within reach—and we’re here to help you get there.

HVAC Installation Services Built Around the Way You Live

San Diego has great weather most of the year, but when it’s hot, it’s hot. Whether you’re building a new place, updating a rental, or finishing out a garage or ADU, you’ll want a system that fits the space.

Not every home here has central AC, and not everyone needs the same setup. That’s why we install all kinds of HVAC systems—so you get comfort that actually works for your home, not someone else’s.

Whether you’re building from scratch or adding air to a space that’s never had it, we install the right heating and cooling system for your needs. We work with all types of homes—from beach cottages to East County rentals—and we’ll help you choose a system that fits your layout, lifestyle, and energy goals.

If your home doesn’t already have central air, we can install an AC system that brings cool, even comfort to every room. Our air conditioning installation services are perfect for new builds, remodels, or homes that have never needed AC—until now. We’ll help you choose a system that’s the right size and efficiency for San Diego’s climate and your home’s square footage. From ductwork to thermostats, we handle it all. From ductwork to thermostats, we handle it all.

Don’t have existing ductwork? A ductless mini split installation gives you powerful heating and cooling without needing to open up walls. It’s a great choice for ADUs, home offices, garage conversions, and older homes. You’ll get zoned comfort and better energy control without the cost of a full HVAC setup. We install systems that blend into your space and keep each room feeling just right.

A heat pump installation gives you year-round comfort from one all-electric system. It cools your home in summer and reverses to heat in the winter—no separate furnace or AC needed. Heat pumps are especially efficient in San Diego’s mild climate and are great for homeowners looking to cut energy use. We’ll help you choose a system that fits your home and your budget.

If your new home has a gas hookup and you want a reliable heating option, we offer expert furnace installation. Furnaces heat your home fast and are ideal for families who want cozy comfort on cooler nights. They also pair well with central air conditioning systems. We’ll size the unit properly and install it to meet safety and efficiency standards.

Comfort isn’t just about temperature—it’s also about the air you breathe. Your HVAC system plays a big role in keeping your indoor air clean, safe, and balanced. We offer indoor air quality installation options that work with new HVAC systems or as standalone upgrades.

Our air purifier installation adds a filtration system to your HVAC setup to capture dust, allergens, and airborne particles. This is great for households with allergies, pets, or anyone who wants cleaner air throughout the home.

Safety comes first. Our carbon monoxide detector installation ensures your home has reliable CO monitoring, especially if you have gas appliances or a furnace. Every home should have one—and we’ll make sure it’s installed properly.

Too much moisture in the air can lead to mold, discomfort, and indoor air quality issues. A dehumidifier installation helps regulate humidity, especially in coastal areas or older homes.

A media air cleaner installation traps smaller airborne particles than standard filters can catch. They’re ideal for families that want better long-term air quality with low maintenance.

A new thermostat installation gives you better control over your comfort and energy use. We install smart and programmable thermostats that pair with your HVAC system for more precise temperature control.

UV air cleaner installation uses ultraviolet light to kill bacteria and viruses as air moves through your system. These systems are ideal for homeowners who want an added layer of protection against airborne germs.

A UV light installation helps keep your HVAC coils clean and prevents mold growth inside your system. It’s perfect for humid spots or homes that want to keep air flowing cleanly through ducts and vents.

We also install heat pump water heaters and solar systems—ask us how we can help make your home more energy-efficient from top to bottom!

Helpful HVAC Repair and Maintenance Services to Save You Time and Money

No matter where you live in San Diego County, chances are we’re already working near you. Our team handles HVAC installation and service calls every day—from Oceanside to Chula Vista and everywhere in between.

Even the best heating and cooling systems need some help from time to time. Maybe yours is making odd noises, not keeping up, or running harder than it should. When that happens, it’s time to call us for HVAC repair. We’ll come out, take a look, and get things working like they should again.

But the best way to avoid those surprise issues? Regular maintenance. A yearly tune-up helps catch problems early, keeps your system efficient, and saves you money in the long run.

Want to make it easy? Our USA Membership Plan includes scheduled maintenance, priority service, and discounts on repairs—so you’re covered when it matters most.

Frequently Asked Questions

That depends on your home’s square footage, layout, insulation, and more. We’ll do a Manual J load calculation to make sure your system is the right size—not too big, not too small. That way, it runs efficiently and keeps your home consistently comfortable.

In San Diego, a SEER rating of 15 or higher is a good balance of efficiency and cost. For heating, look for an AFUE rating of 90% or better if you’re going with a furnace. Rest assured that we’ll walk you through your options.

The price varies depending on your home, the type of system, and any added features or upgrades. Most full HVAC installations cost several thousand dollars, but we’ll give you a clear quote up front. We also offer financing options and can help you explore rebates.

Yes—many homeowners qualify for federal tax credits, local utility rebates, or California energy incentives. Programs change often, but we stay on top of what’s available. We’ll help you find every savings opportunity you qualify for.

Heating and Cooling Offers You Can't Miss

Big savings, same great service. See what offers are available now in Carlsbad for our favorite customers.

  • INSTALLATION

*Anniversary Sale*
20% Off GulfCoat Coating

In honor of our 20th anniversary, you can get 20% off GulfCoat coating for your heat pump or air conditioning system ($190 value). This protective coating resists condensation and moisture from sea spray, humidity and other harsh environmental conditions while helping to extend the life and efficiency of your system. Not valid on HVAC rooftop or package units. Can be combined with 20% anniversary sale offers only. Restrictions apply. System must be coated by 10/31/25 to receive this offer.

  • INSTALLATION

*Anniversary Sale*
20% Off Insulation and Ductwork

In honor of our 20th anniversary, you can get 20% off ductwork and insulation. Increase the airflow and energy efficiency in your home. Valid on residential properties only. Can be combined with 20% anniversary sale offers and Federal Tax Credits only. Must mention offer at time of estimate appointment. Restrictions apply. See dealer for details. System must be installed by 10/31/25 to receive this offer.

  • INSTALLATION

*Anniversary Sale*
20% Off a New System

In honor of our 20th anniversary, you can get 20% off a new heater, air conditioner, or water heater installation. Valid on residential properties only. Not valid on HVAC rooftop or package units. Can be combined with 20% anniversary sale offers and Federal Tax Credits only. Must mention offer at time of estimate appointment. Restrictions apply. See dealer for details. System must be installed by 10/31/25 to receive this offer.

  • 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 10/31/25.

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.

Rachel Phillips
22:24 02 Oct 25
We recently had our A/C replaced by Guthrie & Sons, and I cannot recommend them highly enough. After getting five different bids, Guthrie & Sons stood out immediately—not just on price, but on expertise and professionalism. They even brought their engineers out to ensure the work could be done the right way, which gave us tremendous peace of mind.

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!
Liz Staff
17:27 02 Oct 25
We had a wonderful experience with Guthrie and Sons. Anthony was our estimator and he did a very thorough job of explaining all of our options! Matthew, Bryan, and Isaiah were our installers and they were very efficient, capable, and personable. Our home did not have an existing HVAC system so they had to build the whole thing in an older house that had undergone several additions. We were up and running in just three days. They left the worksite clean at the end of each day. We highly recommend Guthrie and Sons!
Neil Domingo
18:09 27 Sep 25
Kareen did an outstanding job with our HVAC system. From start to finish, he demonstrated professionalism, patience, and a strong commitment to getting the job done right. Even when faced with several unexpected challenges, he handled each one with skill and determination, never compromising on the quality of his work.

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.
Trae Washburn
02:56 16 Sep 25
Professional from beginning to end

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.
David Maycock
01:10 08 Sep 25
Our two old furnaces needed replacing and so we contacted Guthrie & Sons because of their good reputation. They sent Zach the next morning. He quickly verified that our two furnaces were beyond repair and Guthrie could supply and install suitable replacement funaces. He also suggested and explained alternative solutions, but we eventually decided to go ahead with furnace replacement. As soon as we notified Guthrie & Sons of our decision they arranged for Cristian and Pablo to come to our house the next day. They did a good job, explained clearly how to operate the new furnaces and thermostats, and were respectful of our house.
Erin Guthrie
19:21 03 Sep 25
Daniel was quick and professional. Fixed our AC problem in an hour and the price was very transparent and beyond fair. Didn’t push the subscription maintenance service, simply said it would be a good idea due to the age of our unit. Highly recommend!
Tomankhamen
18:03 28 Aug 25
We had to replace a thermostat that had gone bad. In the old days, I could do it myself. Now, though, the programming of the thing requires technical knowledge that I don’t have. The Guthrie guy that did the job was courteous, professional, and as fast as anyone could be. This has been our experience with Guthrie & Sons for every repair, retrofitting, and equipment replacement that they’ve done for us over quite a number of years now.
Gabrielle Benjamin
18:15 25 Aug 25
Carson Snyder and co-worker (Pablo?) did a great job on the installation of the mini-split cassette. They're hard working, they clearly knew what they were doing, polite, cleaned up afterwards, true professionals. I'd gladly recommend these two gentlemen. However, the Company was not good at keeping me informed although I mentioned to the salesman up front that I was information driven. They were short on details and communicated seldom. Anthony did tell me about the government program available that reduced my cost. I wouldn't have known about it if he didn't mention it. The City did approve their work and signed off on the permit which is an indication of the job done right. I think the Company can improve their customer service
robert johnson
00:53 11 Aug 25
Very pleased with the service we received from Guthrie & Sons! Our AC system needed to be replaced after a huge leak. The tech that came out for diagnosis, Mario, took the time to explain the issue to us, as well as our options for repair. They came out on a Saturday to diagnose and it was fixed the following Tuesday. Matthew was the worker that completed the repair and he did an excellent job. Pricing was reasonable. Much more reasonable than the first company we had come out to take a look. We upgraded our system and our SDG&E bill has already gone down. Highly recommend!
K N
15:52 01 Aug 25
Very knowledgeable and professional. Quoted product was high quality and fair pricing. I highly recommend We ended up not going with them only due to the fact we were also getting Solar and ended up going with one company for our project but I would definitely do business with this company in the future if we need it!
LeRoy Lafferty
17:25 31 Jul 25
We had Guthrie and Sons replace our 50 year old house heater with a heat pump. We are very satisfied with the installation performed by Matthew and Andriy. We were impressed with the detail of their work. They paid particular attention to the required sealing and insulating of the system. Even the HERS testing inspector was impressed with their work. We were also impressed by their professionalism and honesty. They gave us an unexpected partial refund off our signed contract.
Nannette Moyer
17:41 29 Jul 25
We have been using Guthrie & Sons for 3 years and I really can’t say enough good things about them. Our technician Mario was incredibly helpful with our most recent AC issue. He spotted the problem quickly and was very knowledgeable when explaining what was happening. I appreciate their honest and fair pricing and would recommend to family and friends. Glad to have an honest company especially with all the price gauging company’s out these days.
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.

Interested in a Residential or Commercial HVAC Installation? Get a Free Quote From Us!

Since 2005, Guthrie & Sons Heating, Air & Solar has been the go-to team for HVAC installations across San Diego County. We’re family-owned, second-generation, and deeply rooted in this community—from Alpine and Ramona to Oceanside and San Ysidro.

We’ve installed systems in everything from single-story homes and new builds to duplexes, rentals, and commercial properties. Whether you're starting fresh or adding an HVAC unit years later, we help you find a setup that fits your space, your budget, and your long-term plans.

We’re not here to upsell—we’re here to get the job done right, and be the company you can rely on for service down the road. That’s what real help should look like. Call or request a free quote for HVAC installation in San Diego, California, online—let’s get your system set up right from the start!

8248 Ronson Road
San Diego, CA 92111
(619) 269-3013
guthrie and sons logo