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.

Troy Nabatilan profile picture
Troy Nabatilan
00:21 15 Feb 26
Matt and Bryan are truly the A-Team! Their teamwork was outstanding and the workmanship was meticulous. The air handler was carefully installed, wiring neatly secured, plenum perfectly fitted, and the condenser precisely positioned and leveled for proper clearance and vibration control. The line set was pressure-tested and vacuumed as well. They also left the work area clean and neat.

Please congratulate them for a job well done!
Sunyim Kim profile picture
Sunyim Kim
18:45 06 Feb 26
I called to estimate to install central air conditioner on our second floor condo. Manager came the next day very punctual and knowledgeable about the process. He listened carefully our concerns and let us to make a decision. We truly appreciate his professionalism. Thank you for your service and I would recommend anyone who needs heating and air conditioning services in San Diego.
saul profile picture
saul
18:45 06 Feb 26
Guithre and Sons distinguish themselves not only through their high level of professionalism but also by their unwavering commitment to the quality and durability of every product they sell and the meticulous craftsmanship involved in each project. The company operates with a strong dedication to integrity and respect, fostering long-term relationships with clients and suppliers alike. They prioritize transparency and ethical standards in all business dealings, ensuring customer satisfaction and trust at every interaction. Their customer service team is exceptionally responsive and knowledgeable, consistently exceeding expectations to resolve issues swiftly and effectively.
Ariana Lujan profile picture
Ariana Lujan
17:43 20 Jan 26
Very helpful, quick and easy to schedule! We had an unexpected (but necessary) repair when doing maintenance and both the office and tech Carson were thorough and transparent in their support. Great service!
Graham Davis profile picture
Graham Davis
15:37 18 Jan 26
After dealing with several HVAC companies, Guthrie & Sons clearly stood out as the most ethical, honest, and reliable. From the very beginning, their approach felt transparent and genuinely focused on what was best for us—not on upselling or unnecessary replacements.

We worked with Vlad T., who had previously been out to our home and saved us tens of thousands of dollars by getting our existing AC unit up and running when other companies were pushing for a full replacement. That experience alone earned our trust.

Now that we’re finally ready to purchase new units, there was no question that Guthrie & Sons was the only company we would consider, and Vlad was the obvious choice. He was extremely professional, punctual, and exceptionally knowledgeable, taking the time to explain options clearly and thoroughly. His expertise and honesty made the entire process straightforward and stress-free.

If you’re looking for an HVAC company you can truly trust—one that values integrity, quality workmanship, and customer service—I cannot recommend Guthrie & Sons and Vlad T. highly enough. This is how service should be done.
Blas Falconer profile picture
Blas Falconer
19:35 17 Jan 26
The layout of my condo made installing splits challenging, and before I met with Guthrie and Sons, three companies either told me that it couldn't be done. Vlad studied my apartment until he found a way to install with minimal openings in the walls and without a second condenser. Mallory, who works in the office, always followed through and advised me when I ran into a hiccup and needed detailed plans for the city. My HOA appreciated Guthrie and Sons' thoroughness and was so impressed with the design, that another resident who had been wanting splits for years, decided to install splits at the same time. The team that came in was knowledgeable, professional, and hard working. They finished a day ahead of time. I'm thrilled with the way everything looks and works.
Rob profile picture
Rob
18:12 12 Jan 26
This is by far the best company for your HVAC needs. They are honest very caring. Good fair pricing and got the job done efficiently and on time. I also signed up for their bi-yearly service which they performed the winter one and went very well. Thanks
Tania Reyes profile picture
Tania Reyes
23:47 05 Dec 25
I’ve been using Guthrie & Sons for over 15 years. They installed my whole AC system and maintained it all those years and never had an issue. Well it was time for an upgrade and they’ve recently installed my second system. The team 15 years ago and the team this time around were both amazing, professional and clean. I can’t recommend them enough Matt, Ben, Christian and Bryan get 10 stars. They are a bit pricier but worth the investment when you have peace of mind and almost two decades of great service and no issues.
Trejos Marcela profile picture
Trejos Marcela
17:27 04 Dec 25
I had an excellent experience with Guthrie & Son AC & Heater Company. Their customer service was outstanding, and they took the time to answer all my questions thoroughly. Every technician who has worked on my AC/heater installation and now the ongoing service has been knowledgeable, respectful, and always on time. I highly recommend them to anyone in need of HVAC services!
I only wish the annual service was cheaper 🙂
Paula Remmel profile picture
Paula Remmel
06:34 02 Dec 25
I have a maintenance plan for my heat pump and air conditioner which Guthrie & Sons installed two years ago. I am very happy with my system as well as the maintenance plan. Wayne, one of their excellent technicians, just completed the Fall service and now the system is ready for winter use. He is knowledgeable and has been able to answer any questions I have about my system. In addition, the office at Guthrie & Sons is very responsive and follows through on any questions and concerns within 24 hours if not immediately. Great service from a great company.
Bill Cogan profile picture
Bill Cogan
22:04 24 Nov 25
Guthrie & Sons responded immediately to my online request, and was able to send someone out immediately. Zack, our technic-ian was very friendly, professional, knowledgeable and gladly answered all of our questions. He found the problem immediately, and left the work area clean and in good order. We would highly recommend Guthrie & Zack! They are real assets to our community.
Dani P profile picture
Dani P
03:27 16 Nov 25
I've been using Guthrie & Sons for over 10 years and two homes. I really like that they are a family-owned and an established business. Always professional, on time, and always quality work. I've used their services from simple routine maintenance to having a new AC installed.I've never had a bad or even mediocre experience; I'm just always overall pleased with their work.
David Downhour profile picture
David Downhour
02:47 10 Nov 25
We bought our HVAC system from Guthrie & Sons. They have been monitoring our system online and later noticed a heat sensor issue.

Zach M. came by and installed on new one. He was extremely professional and completed the installation promptly.

This was another great experience all around and I gladly recommend Guthrie and Son's for all your HVAC needs.
Rachel Phillips profile picture
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 profile picture
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 profile picture
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 profile picture
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 profile picture
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 profile picture
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 profile picture
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.

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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