San Diego, CA Air Conditioning Replacement

Air Conditioning Replacement in San Diego for Better Cooling, Lower Energy Bills

When your AC keeps breaking down, it drains your wallet—and your patience. With Guthrie & Sons’ air conditioning replacement in San Diego, CA, you’ll get a new system that cools better, runs cleaner, and costs less to operate. We’ll swap the stress and high bills for a more reliable system that makes life easier.

Need a New Air Conditioner? We’ll Get You Set Up With the Right System ASAP

Whether your air conditioner quit suddenly or you’ve been planning a replacement for a while, Guthrie & Sons can handle your air conditioning replacement in San Diego, CA. We know it’s a big investment—and there’s a lot to consider. That’s why we act as a true partner, guiding you through your options without pressure and helping you make the right call for your home. We also respect your time and space, showing up when we say we will, wearing booties, laying down drop cloths, and treating your home like it’s our own.

Whether it’s for your home, rental, or business, we’ll help you find an AC unit that cools more evenly, runs quieter, and keeps your energy bills in check. Yes, it is possible! When you’re ready to take the next step, we’ll be here with a free quote and, usually, a next-day installation. Just reach out to our team to get the ball rolling!

Upfront Pricing and Real Help With Rebates, Deals, and Financing

Upfront Pricing and Real Help With Rebates, Deals, and Financing

Nobody likes unexpected costs, especially with something as important as replacing your air conditioner. That’s why we keep everything transparent and easy to understand. With Guthrie & Sons, you’ll always know what you’re paying for and how to make the most of your investment.

Here’s how we help you stay in control:

  • Free in-home estimates so you can make an informed decision before moving forward
  • Free online quoting tool for fast, no-obligation pricing on AC replacements
  • Help with available tax credits and rebates to reduce your overall costs
  • Seasonal promotions that give you added savings when it counts
  • Financing plans so you can get started now without waiting to save up

We’ll talk through your needs, give you straight answers, and help you build a plan that works—for your home and for your finances.

Make Your New AC Last Longer With Our Low-Cost Maintenance Plan

Make Your New AC Last Longer With Our Low-Cost Maintenance Plan

When you’re putting money into a new air conditioner, you want it to last. But most systems don’t just fail out of nowhere; they wear down slowly from lack of maintenance. Skipping AC tune-ups leads to higher energy bills, more repairs, and a shorter lifespan—not just months, but years less.

That’s why now is the right time to set up a plan that protects what you’re investing in.

Our USA Membership keeps your new AC running stronger for longer. It covers everything from traditional central air to ductless mini splits so you’re covered no matter what system you have. We send reminders when service is due and keep things easy year after year. Plus, you get:

  • Discounted repairs
  • Lower service fees
  • Priority scheduling during peak season

Another perk? We help you keep your warranty intact. Most manufacturers require yearly maintenance, and our USA Membership makes it easy to stay on track—no missed checkups, no lost coverage. Have questions or want to get set up during your AC replacement in San Diego? Let’s talk!

What to Look for in a New Air Conditioning System

What to Look for in a New Air Conditioning System

If it’s been years since you last replaced an air conditioner—or if this is your first time—it can feel like a lot to figure out. You’re not just picking a brand or a model. You’re making a long-term decision that’ll affect your comfort, energy bills, and day-to-day life for the next 10 to 20 years. Especially if your last system struggled to keep up, now’s your chance to get it right.

But what’s the best AC for your home? What do ratings like SEER2 and BTU actually mean? What’s worth upgrading—and what isn’t?

Here’s a quick breakdown of the big decisions we’ll help you make when it’s time for your San Diego air conditioning replacement:

AC size isn’t about the physical size of the unit—it’s about how much cooling power (measured in BTUs, or British Thermal Units) your space needs. And many homes actually have the wrong size system.

An air conditioner that’s too small will run constantly and still leave hot spots. An AC unit that’s too big will cycle on and off too often, wasting energy and wearing down parts faster.

We’ll take proper measurements of your space and calculate exactly what size system your home needs—so you get reliable cooling without wasting money or energy.

SEER2 stands for Seasonal Energy Efficiency Ratio, Version 2. It’s a national energy efficiency rating that tells you how much cooling your system provides compared to how much electricity it uses. Think of it like miles per gallon for your air conditioner.

  • Older AC systems often have SEER ratings of 10 or 12.
  • Today’s systems must meet a minimum SEER2 rating of 14.3.
  • High-efficiency systems can go above SEER2 20, delivering major savings.

A higher SEER2 rating means your system cools more for every dollar spent on electricity—especially important during a San Diego summer. We’ll help you balance efficiency and cost so you get solid savings without overspending upfront.

Modern AC systems come with all kinds of added features. Some are helpful, some are just nice-to-have, and others may not be worth the extra cost—depending on how you live and what your home needs.

Here are a few popular options:

  • Wi-Fi control lets you adjust the thermostat from your phone, whether you're across the house or out running errands.
  • Zoned cooling gives you different temperatures in different areas of the home, so everyone stays comfortable.
  • Variable-speed motors run more efficiently and more quietly by adjusting their speed instead of constantly turning on and off.
  • Ultra-quiet operation is a big plus in bedrooms, nurseries, or home offices where noise matters.

We’ll help you figure out which upgrades are actually worth it for your home—not just what looks good on a feature list.

When it’s time to replace your air conditioner, you’re not locked into the same system you had before. Sometimes the old setup still makes sense. Other times, there are better options that could save you money and make your home more comfortable. It all depends on your home’s layout, whether you have ductwork, and how you heat your space.

  • Central air conditioning is a great choice if your home already has ductwork and you want steady cooling throughout the whole house.
  • Ductless mini splits are perfect for homes without ducts, room additions, garages, or areas you want to cool separately. They’re super efficient and let you control the temperature in each room.
  • Heat pumps look like regular AC units but can also heat your home. They’re electric-only, so they’re great if you don’t have gas heating, and they work especially well in our mild winters.

No matter which system you choose, we’ll make sure it fits your home and the way you use it every day. Your installation includes a 2-year labor warranty, with options to extend coverage up to 10 years. Plus, our lifetime workmanship and Property Protection Guarantees mean you’re covered from start to finish—and long after.

Repairing vs. Replacing Your Air Conditioner—Is There a Rule About What to Do?

Repairing vs. Replacing Your Air Conditioner—Is There a Rule About What to Do?

When your AC isn’t working right, it’s natural to ask: Should I fix it or replace it? One rule of thumb we often use is the $5,000 rule—multiply the cost of the repair by the age of your system. If the total is more than $5,000, an air conditioning replacement might be the better investment.

But that’s not the only factor. We take a full look at your system and situation before giving any recommendations. Here’s what else we consider:

  • Age of the Unit: Most systems last 10–15 years. If yours is getting up there, a new one may be more reliable and efficient.
  • Type of Repair Needed: A one-time part swap is one thing. Ongoing refrigerant issues or compressor failures are another.
  • Repair History: Is this your first call in years? Or your third breakdown this season?
  • Warranty Coverage: If your unit is out of warranty, the cost of parts and labor may no longer be worth it.

We won’t push you to replace a system that still has life in it. And we won’t suggest an air conditioning repair if it’s just kicking the can down the road. We’ll give you the facts and walk through the pros and cons so you can feel comfortable about your choice.

Frequently Asked Questions

If your AC is 20 years old, it’s definitely time to start thinking about a replacement—even if it’s still running. Older systems are far less efficient, more likely to break down, and often use outdated refrigerant. A new unit will cool better, cost less to run, and give you peace of mind.

A 20-year-old unit could be using twice the energy of a modern system, especially if it’s below 10 SEER (older rating standard). That means higher electric bills and less comfort for your home. Upgrading to a new, high-efficiency model can cut your cooling costs significantly.

Yes—big time. A properly sized and professionally installed new AC will cool more evenly, dehumidify better, and keep your house more comfortable overall. You’ll notice faster cooling, fewer hot spots, and better airflow right away.

It’s a general rule that says if your repair cost times the age of your system is over $5,000, replacement might make more financial sense. So, if your 15-year-old AC needs a $500 repair, 15 × 500 = $7,500—it may be smarter to upgrade than keep repairing it.

Yes—within reason. While pricing is usually based on equipment, labor, and quality of work, many companies (like us) offer seasonal specials, financing options, or bundled discounts. It never hurts to ask, and we’re always up front about pricing and value.

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

Up to $1,500 Off a New System

Receive up to $750 in manufacturer rebates and up to $750 discount from Guthrie. Valid on select systems. Must mention promotion at time of estimate appointment. Not valid on prior sales. Cannot be combined with any other offers. Restrictions apply. See dealer for details. Offer expires 7/31/2026.

  • 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 7/31/2026.

  • 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 7/31/2026.

  • 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 7/31/2026.

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.

Jim Hainline profile picture
Jim Hainline
3 weeks ago
We had Rob from Guthrie & Sons come out to repair one of our A/C units. Rob was very friendly and professional. Rob resolved the problem quickly.
As far as price goes, I paid a higher flat fee 12 years ago from one of the larger local companies. I'm very impressed with pricing and quality of work.

I highly recommend Guthrie & Sons and Rob.
Amy Graeber profile picture
Amy Graeber
3 weeks ago
Great experience! The company confirmed my appointment and let me know who my technician was via text. They also updated me when he was on his way. The technician was friendly and knowledgeable. I’d recommend Guthrie & Sons to friends and family.
Bobby Orozco profile picture
Bobby Orozco
3 months ago
Great experience working with Guthrie & Sons from start to finish. Vlad was awesome. He was incredibly knowledgeable and explained everything in detail. Stark contrast from other companies we received bids for.

Christian and his crew did a great job on the install everything was smooth from start to finish.

I would definitely recommend this company here in Murrieta.
Sharon Troeger profile picture
Sharon Troeger
3 months ago
Guthrie & Sons has always been super professional and knowledgeable about our system. They did the install a few years ago and have continued to maintain it for us. This year we noticed that our system wasn't performing as well, so when Wayne came out, he noticed a likely leak and was back 2 days later to find and fix it. He was quick, professional, and just extremely nice! 100% recommend.
Jeff Haight profile picture
Jeff Haight
4 months ago
Called one of the "big guys" in town and the estimate to do what needed to be done to diagnose my problem was nearly 1/2 the cost of the system when I purchased it and had it installed 5.5 years ago, I found Guthrie & Sons and they came out the same day and did the same work for 1/4 the price I was quoted for the same exact work! Daniel was friendly, honest and quickly got my system working as expected. I even purchased the service plan so I don't have future problems. I highly recommend these guys, they were awesome, don't get ripped off call Guthrie & Sons!!!
Rocky profile picture
Rocky
4 months ago
I highly recommend Guthrie & Sons; from setting the appointment to the actual service!! Daniel was prompt, able to take care of our issue at a very reasonable price. I will be using them for all our needs in the future!!!! Thanks Daniel and Mackenzie.....you were great!!
Troy Nabatilan profile picture
Troy Nabatilan
5 months ago
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 profile picture
Johnathan Yang
5 months ago
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 profile picture
Sunyim Kim
5 months ago
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
5 months ago
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
6 months ago
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
6 months ago
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
6 months ago
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
6 months ago
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
7 months ago
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
7 months ago
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
7 months ago
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
8 months ago
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
8 months ago
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
8 months ago
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.

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

From North Park to Rancho Bernardo, we’ve helped homeowners all across San Diego County replace outdated AC systems with something better—cooler, quieter, and far more efficient. Whether you’re in Clairemont, Chula Vista, La Mesa, or out in El Cajon or Oceanside, Guthrie & Sons Heating, Air & Solar is here to make your AC replacement smooth and affordable.

If your current system is unreliable or you’re tired of high electric bills, let’s talk. We’ll match you with the right cooling system for your home, your needs, and your budget. Request your free quote today and let’s get started!

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