HVAC Repair

HVAC Repair in San Diego County for Fast Fixes at Fair Prices

AC not cooling? Heater not heating? We’ll be right there! Whether the house is heating up when it shouldn’t—or staying cold when you need warmth—we know how frustrating that feels. At Guthrie & Sons, we’re local, licensed, and ready when and where you need an HVAC repair in the San Diego area.

Looking for a Local HVAC Repair Service? Guthrie & Sons Is In Your Neighborhood

Living in San Diego, we’re lucky most days—but when it gets hot, that AC feels wonderful. And when it cools off, you want your heater on. If your heating or cooling system has suddenly stopped working or is behaving out of the ordinary, call the HVAC repair experts at Guthrie & Sons Heating, Air & Solar.

Whether it’s your home, rental, or business, we can quickly send out a trained technician to take a look. We handle repairs for air conditioners, furnaces, heat pumps, and ductless mini-splits, and our pricing is always on par with the work performed. New to us or the neighborhood? We’re a local, family-owned company that’s been part of this community since 2005. We know the homes, we know the weather, and we know how to fix your HVAC system—fast. Call or schedule online today for your HVAC repair in San Diego, California.

Trust the HVAC Repair Team That’s Been Here for Decades

Trust the HVAC Repair Team That’s Been Here for Decades

We’re not some big chain just passing through town. Guthrie & Sons is a second-generation, family-run company that’s been working on HVAC systems in San Diego buildings since 2005. Our techs are NATE-certified, which means they’ve gone through the highest level of training and testing in the industry so you’re getting someone who really knows what they’re doing.

We have fully stocked trucks out every day across San Diego County and the nearby area—from Oceanside to Chula Vista, El Cajon to Carlsbad and Temecula—so when you call, we’re already close by and ready to get to work. We don’t drag it out or leave you with a half-done job—we work quickly, fix it fully, and make sure it’s done right the first time.

How Much Will My HVAC Repair Cost?

We get it—this is the first question you want answered. And while pricing can vary, we’ll always start by coming out, inspecting your system, and talking through what’s going on. Then we’ll give you clear options, get your go-ahead, and get the work done.

Here’s what to keep in mind about your HVAC repair costs:

  • Smaller HVAC repairs usually cost less and often involve things like a faulty thermostat, a clogged drain line, or a worn-out capacitor.
  • Bigger issues—like a failing blower motor, heat exchanger, or a refrigerant leak—can cost more, and in some cases, the price starts to approach what you’d spend on a new system.
  • The age and condition of your equipment also matter. Older systems tend to need more labor, and replacement parts can be harder (and more expensive) to find.

We’ll never push you to replace what can be repaired. For most issues, repair is the smarter, more affordable route—and we’ll always guide you toward the best solution for your system and budget.

Explore Our San Diego HVAC Repair Services

Explore Our San Diego HVAC Repair Services

In San Diego, homes vary a lot—some are brand new with smart thermostats and zoned systems, others still rely on older units that have seen better days. We work on them all. Big houses, small condos, rental units, multi-family setups—you name it, we’ve repaired it. If something’s not working right, we’ll figure it out and get it fixed.

Heating and Cooling Repair

Wondering if we can repair your heating and air conditioning unit? The answer is yes! Our San Diego HVAC repair company works on all major heating and cooling systems.

Wondering if we can repair your heating and air conditioning unit? The answer is yes! Our San Diego HVAC repair company works on all major heating and cooling systems.

If your AC isn’t cooling like it used to, feels weak at the vents, or runs constantly without results, you need an air conditioning repair. It could be low on refrigerant, the coil might be frozen, or a filter could be clogged with dust. We’ll check everything from airflow to electrical parts, clean it up, and get your system cooling again.

Mini-splits are great—until a unit stops responding, starts leaking, or throws a blinking error code. Most of the time, it’s a blocked drain, a faulty sensor, or a control board issue. These things happen with regular wear and tear. During your mini-split repair, we’ll troubleshoot the system, clear out any clogs, reset what needs resetting, and swap out parts if needed.

A heat pump relies on the reversing valve to switch between modes and refrigerant to keep everything moving. But if the refrigerant is low, the valve sticks, or the coil ices up, your system might blow the wrong temperature or stop altogether. When you call us for a heat pump repair, we’ll test the system, find what’s throwing it off, and make the necessary repairs.

If your furnace isn’t turning on, keeps shutting off, or sounds like something’s shaking inside, it’s time for a furnace repair. Often it’s a worn ignitor, a dirty flame sensor, or a blower motor starting to fail. We’ll do a full checkup to figure out what’s causing the trouble and take care of it so your heating system runs smoothly once again.

Indoor air quality products are one of the best upgrades you can make for your home. Because of our dry climate and long cooling seasons, you made a smart decision by installing one. But like anything connected to your HVAC system, these units can break down, too. When they do, we’re here to repair them, along with the thermostats that help control your whole system.

When your air purifier isn’t cleaning the air like it used to, the filter may be clogged or the unit could have a failing fan or UV light. We handle all types of air purifier repairs, from basic maintenance to part replacement.

If your whole-home dehumidifier isn’t draining, keeps shutting off, or feels like it’s doing nothing at all, a quick dehumidifier repair is in order. We often see blocked drain lines, faulty float switches, or sensors that need recalibrating.

Sometimes the issue isn’t with your HVAC unit—it’s the thermostat sending the wrong signals. Faulty sensors or wiring can stop the system from turning on or reaching the right temperature. We’ll take care of the thermostat repair so your heating and cooling systems respond correctly.

Do I Need an HVAC Repair or HVAC Replacement?

In most cases, if your system is under 10 years old and the issue is isolated or minor, an HVAC repair makes sense. But if your system is 12–15 years old or more, has a history of repeated breakdowns, or the HVAC repair cost is getting close to half the price of a new unit, it may be time to consider an HVAC replacement.

If that’s the case, we’ll walk you through the options. We offer financing, a free online quoting tool to help estimate costs, and we’ll even help you find manufacturer rebates, seasonal discounts, and any available tax incentives in the San Diego area. We don’t pressure you to replace what can be repaired—we just give you the honest facts.

Make Fewer Repair Calls With More Regular Maintenance

Make Fewer Repair Calls With More Regular Maintenance

It may not always seem like it, but we ask a lot from our HVAC systems. We run the AC all day when it’s hot, the heat on cold mornings, and air purifiers during wildfire season—all sometimes in the same week. Our air also has dust, salt, and moisture in it, and that stuff gets into your system. Coils get dirty. Filters clog. Parts overheat. When you skip maintenance, those things pile up and turn into expensive HVAC repairs.

No matter what kind of system you have, annual HVAC maintenance makes a big difference. At Guthrie & Sons, we offer seasonal tune-ups for everything—ACs, heat pumps, furnaces, and mini-splits. Want to make it even more worth your time and money? Our USA Membership Plan gives you priority service, repair discounts, reduced service fees, and extended warranty options. We have plans to fit your needs and your system. Talk to your technician or give us a call to find out more.

Frequently Asked Questions

Yes, all of our HVAC repairs are backed by a workmanship warranty. We’ll go over the details with you before any work begins. We stand behind everything we do.

First, check your thermostat settings and circuit breaker—sometimes it’s a quick fix. If that doesn’t work, give us a call and we’ll send someone out. We’ll find the issue and walk you through your options.

We don’t recommend it. HVAC systems involve high-voltage electricity, gas, and refrigerant—none of which are safe to troubleshoot without training. Give us a call and let a licensed technician take care of it.

Most repairs can be diagnosed and fixed in one visit. It depends on the problem and whether parts are needed. Either way, we work quickly and keep you informed every step of the way.

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.

Schedule Your HVAC Repair in San Diego, CA With Guthrie & Sons

If you haven’t worked with Guthrie & Sons Heating, Air & Solar before and you’re searching for “HVAC repair near me”, you’re probably facing a long list of options. Take the time to do your research because your heating and cooling system is too important to leave in unqualified hands. One bad repair can lead to more damage and bigger bills. Our technicians are highly trained, have real in-the-field experience, and show up ready to work. They’ll treat your home and your time with respect. Call today or fill out our online form to schedule an appointment for HVAC repair in San Diego, CA, and the surrounding cities.

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