HVAC Replacement

HVAC Replacement in San Diego County for a Reliable System That Costs Less to Run

Looking to replace your HVAC system? All you want is something reliable, properly installed, and fairly priced. That shouldn’t be complicated. And with Guthrie & Sons, it isn’t. We’ve been doing HVAC replacement in San Diego for decades, and we’ll help you find a system that’s ideal for your home and budget.

Get a New HVAC System Installed at a Great Price With Guthrie & Sons

If your HVAC system just died—or it’s barely hanging on—you’re probably stressed, sweating, and getting mixed messages from every company you call. One tells you to fix it. Another pushes you to replace everything with the latest top-dollar setup. And you're left wondering who’s being straight with you.

At Guthrie & Sons, we understand the frustration—and we’re here to make it easier. We’re a second-generation, family-owned HVAC company with deep roots in San Diego. Our technicians are licensed, insured, and NATE-certified, which means they’re some of the most qualified in the industry. We don’t overcomplicate things or push what you don’t need. If you’re ready for an HVAC replacement in San Diego, California, give us a call or request a quote online and we’ll guide you through the entire process.

Explore HVAC Replacement Pricing With Our Free Online Quoting Tool

We install HVAC systems in just about every type of property—single-family homes, condos, apartments, ADUs, townhomes, and commercial spaces. If you’re trying to figure out your HVAC replacement cost, but not quite ready to meet yet, it’s not a problem. That’s why we built our free online quoting tool! Just answer a few quick questions and get a ballpark estimate back from our team.

Later on, we’ll follow up with a free in-home estimate to confirm the details. Or if you’d rather skip the form and meet face to face, we’ll schedule a visit—no pressure, no big sales pitch. We go all over San Diego County and the nearby areas, including Oceanside, Chula Vista, Escondido, El Cajon, Carlsbad, La Mesa, Poway, Temecula, Murrieta, and more.

Need Help Paying for Your HVAC Replacement? We’ve Got Options

Replacing your HVAC system isn’t cheap. These days, nothing is. Most people aren’t ready to cover the whole cost upfront, and that’s okay. At Guthrie & Sons, we offer financing options to make it easier to move forward without putting off an upgrade that could affect your home’s health and safety.

Not sure what it costs or what you qualify for? Give us a call. We also run seasonal discounts, and we’ll help you look for rebates and tax credits that can bring the price down. Our goal is to help you stay comfortable and make the numbers work.

San Diego HVAC Replacement Services That Meet Your Home’s Needs

In San Diego, people heat and cool their homes and businesses in all kinds of ways. Sometimes it was the system that fit the building best; other times it was just whatever was standard when the place was built. But if you’re replacing your HVAC system, now’s your chance to rethink it. You’re not stuck with what’s there—you can upgrade to something better or even switch types entirely. There are newer, more efficient options out there that can give you more control, better comfort, and lower energy use. Rest assured, we’ll walk you through all your options.

Central air is great for homes with ductwork and offers full-home cooling that’s simple to use. It’s a good choice for families, larger homes, and properties that need even temperature throughout. If your current AC unit is over 10–15 years old, breaks down often, or struggles to keep up on hot days, it’s time to look at a replacement. We’ll remove the old system, check your ductwork, and install a properly sized unit that cools evenly and runs efficiently without making your energy bills jump.

Heat pumps are a great fit for San Diego’s mild climate because they handle both heating and cooling in one system. If your unit is constantly running, stuck in the wrong mode, or has major issues like a bad compressor or reversing valve, a heat pump replacement will serve you well. We’ll evaluate your current setup, recommend a model that fits your space, and replace it with a modern, energy-efficient system that runs all year without relying on gas.

Mini-splits are a popular option for homes without ductwork, ADUs, converted garages, and rooms that just don’t stay comfortable. They’re also great for zoning—cooling or heating only the rooms you use. If yours is leaking, noisy, or not keeping up, it might be time for a mini-split replacement. We’ll remove the old unit, install new wall or ceiling-mounted heads, and make sure each zone runs quietly and independently with strong performance and control.

If your home uses a gas or electric furnace and it’s older, noisy, or not heating like it used to, a furnace replacement can make a big difference. Furnaces typically last around 15–20 years, but after that, they start costing more in repairs and energy. We’ll inspect your current system, recommend a safe and properly sized replacement, and install it with clean ductwork and up-to-code ventilation. You’ll get better heat, better safety, and a lot more peace of mind.

Want Your New HVAC System to Last Longer? Schedule Maintenance With Us

The truth is, a lot of HVAC systems get replaced earlier than they should, usually because regular maintenance was skipped. Missed tune-ups, ignored warning signs, or overdue repairs all add up. If that was the case, let’s not let that happen again. We recommend yearly HVAC maintenance for your AC, furnace, heat pump, and mini-split to keep everything running smoothly and catch issues early before they get really expensive. Well-maintained systems can last 30–50% longer and run noticeably better day to day.

We get that this is one more thing to track—and that’s exactly why we built our USA Membership Plan. It includes scheduled service reminders, priority scheduling, discounts on service calls and repairs, and even upgraded warranty support. You save time, save money, and avoid surprise breakdowns. That’s a win all around. Talk to us about signing up!

Frequently Asked Questions

If your system’s still fairly new and the repair is small, we’ll usually recommend fixing it. But if it’s over 12 years old, breaking down often, or the cost to fix it keeps adding up, an HVAC replacement may be the smarter long-term move. We’ll always talk you through both options.

Most HVAC replacements take one full day. If it’s a bigger system or there’s extra ductwork involved, it might take a little longer. We’ll give you a clear timeline upfront so you know what to expect.

We do a full load calculation based on your home’s layout, insulation, and square footage. A lot of systems are oversized or undersized, which causes all kinds of problems. Getting the size right means better comfort, lower bills, and fewer breakdowns.

It depends on your home, budget, and energy goals. Most people in San Diego go with something in the 14–18 SEER range. We’ll walk you through the options and help you pick a system that balances performance and cost.

If both systems are older or use shared components, replacing them together can save money and make sure everything runs more efficiently. We’ll take a look at what you’ve got and give you honest advice.

INSTALLATION

$625 Comfortably California Rebate

Valid on select systems. Valid on residential properties only. Can be combined with HEERHA rebates, $2,000 heat pump Federal Tax Credit and $600 electrical upgrade Federal Tax Credit. Rebate available until funds last. Restrictions apply. See dealer for details. Offer expires 3/31/26.

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 3/31/26.

REPAIR

Free Diagnostic w/ a Repair

Your diagnostic service call fee will be waived if you proceed with a repair.

Cannot combine with other offers. Restrictions apply. See dealer for details. Offer expires 3/31/26.

WATER HEATER

Free Estimate on a New Heat Pump Water Heater Installation

Valid for an estimate for a new hybrid heat pump water heater installation or replacement.

Restrictions apply. See dealer for details. Offer expires 3/31/26.

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

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!

Johnathan Yang

18:56 07 Feb 26

Guthrie and Sons was very professional and communicative. Matthew and Bryan did incredible work, and followed up with a lot of testing to make sure my new unit was functioning well. They went above and beyond to ensure that things were done correctly. I could tell their standards were extremely high, and I felt relieved seeing how much care they took in their installation. I’m very pleased with the result!

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

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

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

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

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

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

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

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

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

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

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

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

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!

Request a Free Quote for Your HVAC Replacement in San Diego, CA

Most people only replace their HVAC system once or twice in their lifetime, so it’s normal to have questions. At Guthrie & Sons Heating, Air & Solar, we have answers—and we won’t push you into the biggest, flashiest system on the market. We’ll listen, get to know your home, and recommend what actually makes sense for your space. As a local company, we understand San Diego homes, buildings, and the weather we build for. We also know that your time is valuable, so we try to schedule HVAC replacements as soon as the next time. Call now or fill out the online form to request a quote for your HVAC replacement in San Diego, CA.

8248 Ronson Road
San Diego, CA 92111

(619) 269-3013

HVAC Replacement