Serra Mesa, San Diego Air Conditioning Services

Same-Day Air Conditioning Services in Serra Mesa

The California sun feels good outside, but in your Serra Mesa home, you want somewhere cool to rest up and relax. At Guthrie & Sons, we provide air conditioning services in Serra Mesa for central air systems, ductless mini splits, and heat pumps. If you need something repaired, installed, or serviced, just let us know and we’ll be on our way!

Get the Air Conditioning Service You Need from the Local Pros at Guthrie & Sons

There’s no doubt about it—the further inland you are, the more you feel the heat. In Serra Mesa, summer heat waves can push temperatures well into the 90s, and when the Santa Ana winds kick up, things only get hotter and drier. That’s why having a dependable air conditioning company matters. At Guthrie & Sons Heating, Air & Solar, we offer fast, same-day air conditioning services in Serra Mesa, San Diego, to keep your home
comfortable.

Whether you’re looking for a quick repair, a brand-new installation, or a full replacement, we’ve got you covered. As a local, family-owned company that’s been in the neighborhood for decades, we know what it takes to keep homes here cool. Call our office or schedule your AC service in Serra Mesa, CA, online today—we’ll be there when you need us.

Upfront Estimates and Extra Savings Every Step of the Way

Upfront Estimates and Extra Savings Every Step of the Way

The last thing you want when fixing or replacing an air conditioner is a confusing price tag or a surprise bill. That’s why we keep things upfront and easy to follow. We’ll give you a straight estimate, explain the options in plain language, and help you find ways to cut costs wherever possible. From rebates and seasonal discounts to convenient financing, we make sure staying cool doesn’t break the bank.

  • Free in-home estimates so there are no surprises
  • An online quoting tool you can use anytime for installs and replacements
  • Guidance on rebates and tax credits that can cut costs
  • Seasonal specials to give you extra savings when you need it most
  • Helpful financing with monthly payments to fit your budget


With Guthrie & Sons, you’ll always know where your money’s going—and feel good about the HVAC contractor working in your home.

Maintenance Plans

We Have Ways to Make Your Air Conditioner Last Longer (and Work Better)

Every summer, we hear from families stuck in hot houses after their AC suddenly quits. And nine times out of ten, the reason is something simple—like a clogged filter, dirty coil, low refrigerant, or a worn part that could have been caught early. Skipping maintenance might feel harmless in the moment, but it often ends up costing a lot more down the road.

That’s why we created the Guthrie & Sons USA Membership. It takes the hassle of air conditioning maintenance off your shoulders with scheduled tune-ups, helpful reminders, priority service during heat waves, and discounted rates on repairs and service calls.

No matter what you rely on—central AC, a ductless mini split, or a heat pump—routine care makes all the difference. It keeps your system running smoothly, protects your warranty, and adds years of life to your equipment. Replacing an AC can set you back thousands. A yearly tune-up? A fraction of the cost—and it spares you a lot of the stress involved. Talk to our team about better protecting your air conditioning system today.

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Explore Our Serra Mesa Air Conditioning Services and Tell Us How We Can Help

Explore Our Serra Mesa Air Conditioning Services and Tell Us How We Can Help

At Guthrie & Sons, we serve all of San Diego County and have HVAC technicians throughout the local area, including plenty in Serra Mesa for residential and commercial air conditioning services.

Our team includes NATE-certified technicians, which means they’re certified by North American Technician Excellence, the leading standard in the HVAC industry. Having a NATE-certified technician in your home is an extra layer of confidence that the work will be done right, start to finish.

We’re proud to serve every corner of Serra Mesa, from Mission Village and Birdland to Cabrillo Heights and Ridgegate. Our team also works in the neighborhoods around Montgomery Field and the homes near Serra Mesa Community Park, where families and longtime residents know us well. No matter which part of Serra Mesa you call home, Guthrie & Sons is nearby and ready to keep your AC running strong.

Air Conditioning Services

Air Conditioning Services

Central AC is common in Serra Mesa homes and makes a big difference when the heat rolls in. Our air conditioning services in Serra Mesa cover everything—whether it’s a quick checkup, a repair when something goes wrong, or replacing an old system that’s past its prime.

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A lot of Serra Mesa homes were built without central AC, so putting one in for the first time is a big upgrade. With our air conditioning installation in Serra Mesa, we handle everything—ductwork, sizing, and setup—so the system fits your home and lifestyle. From day one, you’ll have even, reliable cooling in every room.

Most AC breakdowns we see could have been avoided with a little routine care. Our air conditioning maintenance in Serra Mesa includes cleaning, testing, and tune-ups that keep things running smoothly. A short visit now can save you from hot, expensive problems later.

If your AC is blowing warm air, making strange noises, or just not keeping up, it’s time to call us. Our air conditioning repair in Serra Mesa handles issues like refrigerant leaks, broken motors, and clogged drains so your home can cool down fast.

After about 10–15 years, most systems lose efficiency and start breaking down more often. Our air conditioning replacement in Serra Mesa takes out the old unit, installs a new energy-efficient model, and makes sure your home is comfortable again without the constant hassle.

Ductless Mini Split Services

Ductless Mini Split Services

Not every home here has ductwork for a central system, and even those that do often have rooms that never seem to cool properly. If you already have a ductless mini split installed and need it serviced or are thinking about adding one, talk to our team. Our ductless mini split services in Serra Mesa include everything a mini split owner needs.

With our ductless mini split installation in Serra Mesa, we often see these systems added to upstairs bedrooms that trap heat, garage conversions that don’t connect to ductwork, and ADUs tucked behind the main house. The indoor unit mounts neatly on a wall or ceiling, connected to a compact outdoor condenser that takes little space. It’s a smart way to bring reliable cooling to areas where central AC doesn’t reach.

Even the best ductless systems need a little upkeep to stay efficient. Our ductless mini split maintenance in Serra Mesa is all about preventing the small issues—like clogged filters, dirty coils, or blocked drains—that lead to bigger problems later. With routine service, your unit cools better, uses less energy, and lasts longer.

After years of use, ductless systems start showing their age—maybe the bedroom never cools down, the unit leaks, or you’ve had to call for repairs one too many times. That’s when our ductless mini split replacement in Serra Mesa makes sense. We’ll swap out the old equipment for a modern, energy-efficient system.

Heat Pump Services

Heat Pump Services

California is moving away from natural gas, and more homeowners in Serra Mesa are making the switch to all-electric systems. Air-source heat pumps are at the center of that shift because they do the work of both an AC and a furnace while using far less energy. Our heat pump services in Serra Mesa include installation, maintenance, repair, and replacement of these fantastic systems.

Air-source heat pumps pull the heat out of your home and send cool air back in, keeping things comfortable even when temperatures soar. With our heat pump installation in Serra Mesa, we place the outdoor unit, connect it to an indoor air handler, and make sure the system is sized and set up for your space. From the first day it’s running, you’ll notice cooler rooms and lower energy use.

Because heat pumps run almost year-round here, they need a little more attention than traditional systems. Our heat pump maintenance in Serra Mesa includes coil cleaning, refrigerant checks, and performance testing to make sure it’s ready for heat waves and seasonal changes. A small investment in maintenance keeps energy bills down and helps your system last longer.

When a heat pump starts struggling, you’ll usually notice higher bills, nonstop cycling, or rooms that never quite cool off. Our heat pump repair in Serra Mesa gets to the root of the problem—whether it’s a refrigerant leak, a worn motor, or a failing sensor—and restores your comfort quickly. Most fixes can be handled in one visit so you’re not stuck waiting in the heat.

Once a system is 12–15 years old, it’s usually less efficient and more expensive to keep alive. Our heat pump replacement in Serra Mesa gives you a modern, high-efficiency unit that keeps your home cool. It’s an upgrade that lowers energy use, makes your home more comfortable, and lines up with where the state is headed.

HVAC System Services

HVAC System Services

In Serra Mesa, every home is a little different. Some homes run central AC with a furnace, others use all-electric heat pumps, and plenty rely on ductless units. That’s why our HVAC system services in Serra Mesa are flexible—we install, maintain, repair, and replace systems of all types so your home feels comfortable year-round.

Getting a new system starts with a consultation where we walk through your home and talk about what you need. From there, we put together a clear quote with options that fit your space and budget. Once you’re ready, our HVAC installation in Serra Mesa includes setting up the equipment, running ductwork if needed, and making sure the system is tested and working before we leave.

There are a few things you can do at home to keep your system running—swap out filters every few months, keep vents clear, and make sure the outdoor unit isn’t blocked. But the bigger stuff—cleaning coils, checking refrigerant, tightening electrical connections—needs a professional. Schedule your yearly HVAC maintenance in Serra Mesa with us and take advantage of our maintenance membership so you never miss an appointment.

When something breaks, it usually shows up as weak airflow, hot rooms, or a system that never shuts off. Our HVAC repair in Serra Mesa handles everything from refrigerant leaks to worn-out motors and thermostat failures. We get it fixed fast so you’re not stuck waiting in a hot house.

After 15 or so years, even the best systems start breaking down more often and costing more to run. With our HVAC replacement in Serra Mesa, we take out the old unit and install something modern and efficient—whether that’s central AC, a furnace, or a heat pump—so your home cools evenly without draining your wallet.

As a Daikin Pro Elite Contractor, we offer HVAC system monitoring in Serra Mesa for Daikin systems. We can track performance remotely, spot small issues before they turn into big ones, and show up with the right info and parts in hand. That means less trial and error and quicker fixes when you need them.

Trusted Air Conditioning Services in Serra Mesa Since 2005

Trusted Air Conditioning Services in Serra Mesa Since 2005

For several decades now, Guthrie & Sons has been the local name residents of Serra Mesa turn to for heating, cooling, indoor air quality, and solar services. Wes Guthrie started the company in 2005 with a simple promise: do the job right, charge a fair price, and treat every customer with respect. His sons still run things the same way today, carrying on a family tradition of service that puts people first.

When you call us for air conditioning services in Serra Mesa, you won’t get pushy sales tactics or rushed visits. You’ll get clear answers, fair pricing, and technicians who respect your home and your time. Here’s what makes working with Guthrie & Sons different:

  • 100% Customer Satisfaction Guarantee: If something’s not right, we’ll fix it.
  • Upfront, Honest Pricing: What we quote is what you pay—no gimmicks, no games.
  • Expert Technicians: Our team services and installs all makes and models.
  • Family-Owned: We’re one of the last family-run HVAC companies in the area.
  • Lifetime Workmanship Guarantee: When we install something, we make sure it lasts.
  • 2-Year Labor Warranty: Every new installation comes with a 2-year labor warranty.
  • Free Quotes on New Systems: Get a clear installation estimate before buying.
  • Convenient Financing Options: We offer payment plans to fit your budget.
  • Property Protection Guarantee: From drop cloths to clean-up, we protect your space.

Frequently Asked Questions

A window AC can be fine for cooling a single bedroom or small apartment in Serra Mesa, and it’s cheaper up front. But if you’re trying to keep an entire house comfortable—especially older tract homes or multi-room layouts—central air usually does the job more efficiently. Running two or three window units at once often costs more than just one properly sized central system.

On hotter days inland, it’s normal for an AC in Serra Mesa to run 12–16 hours to keep indoor temps steady. If your system is running nonstop without cooling well—or barely running at all—that could mean a clogged filter, low refrigerant, or that the unit isn’t sized right for your house.

With SDG&E’s time-of-use billing, electricity costs more during “on-peak” hours, usually 4 to 9 p.m. That also happens to be when homes in Serra Mesa are holding onto the day’s heat. Pre-cooling earlier in the afternoon or nudging the thermostat up a few degrees during peak hours can help lower your bill.

If your AC is blowing warm air, taking too long to cool, or showing ice on the refrigerant lines, it may be low on refrigerant (commonly called Freon). Since refrigerant doesn’t get “used up,” this usually means there’s a leak. A licensed tech can test the system, repair the leak, and recharge it properly.

Most systems are designed to cool the air inside to about 20°F lower than the outdoor temperature. So if it’s 95°F outside in Serra Mesa, you can expect around 75°F indoors. Trying to push it lower adds stress to the unit and usually just drives up your SDG&E bill.

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.

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.
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.

Schedule Your AC Service in Serra Mesa Today

We live here, work here, and go where you do—whether it’s a trip to Ruffin Canyon, a pickup game at the Serra Mesa Recreation Center, or a weekend stroll through Civita Park. We’re not just your HVAC contractor, we’re your neighbors. And we know how important it is to come back to a cool, comfortable home after a long day of working or playing in the sun. That’s why when you call Guthrie & Sons Heating, Air & Solar for air conditioning services in Serra Mesa, you’ll get the kind of care we’d give our own families. Schedule your air conditioning service in Serra Mesa today.

8248 Ronson Road
San Diego, CA 92111
(619) 269-3013
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