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

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 9/29/25.

WATER HEATER

$2,600 Federal Tax Credit on Heat Pump Water Heater

Valid on a qualifying heat pump water heater installation with electrical panel upgrade. Up to $2,000 (30% of cost) in Federal Tax Credits for a heat pump water heater and up to $600 (30% of cost) for an electrical panel upgrade.

Can be combined with state rebates only. Restrictions apply. See dealer for details. Offer valid for an estimate appointment scheduled before 9/29/25.

INSTALLATION

Up to $7,750 off a New System

Save up to $4,000 in Tech Clean Equity rebates, up to $1,150 in manufacturer rebates and up to $2,600 in Federal Tax Credits for a total of up to $7,750 off a new installation.

Valid on residential properties only. Cannot combine with any other offers or discounts. Must mention promo at time of estimate appointment. Must be income-qualified to receive Tech Clean equity rebate. Restrictions apply. See dealer for details. Offer valid for an estimate appointment scheduled before 9/29/25.

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 9/29/25.

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.

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.

Phil Lane

17:18 10 May 25

Guthrie and Sons has provided great service. There are many HVAC companies in San Diego to choose from. They provided a very reasonable estimate for replacing our two AC systems. Once we said yes installation happened within days. It was a quality install. They answer the phone quickly when I've had questions. Happy to refer them to others.

Dianne Haase

20:57 02 May 25

Great customer service, technicians always on time and friendly. I’ve had my new hybrid heat pump for a few years and Guthrie & Sons are very proactive making sure everything is running smoothly. Very happy in my decision to use them!

Andrea Kossoudji

01:11 30 Apr 25

Great service!! Jonathan was patient, kind, knowledgeable and extremely professional! I love Guthrie & Sons’ reminder system, notification of the technician enroute, the easy invoice system and immediate emailing of the findings, including detailed photographs of the work completed!! 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