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

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 8/29/25.

  • 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 8/29/25.

  • 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 8/29/25.

  • 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 8/29/25.

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.

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!
james beedon
20:47 23 Apr 25
Last summer my air conditioner couldn't cool the house in the hottest period of summer. The HVAC team I was working with came in and said the coils were leaking, the unit was 20 years old. I requested quotes from 5 different companies, and the variation of prices was huge. I went with Guthrie and Sons for these reasons:
1. Local Company
2. Family Owned
3. Great presentation, no pressure
4. Good products
5. Competitive pricing
Just installed yesterday, so jury is still out on the system, but installation was thorough and great communication so far!
Darius Degher
21:45 22 Apr 25
Carson and Michael were brilliant. The heat pump installation went smoothly, and they are really pleasant and trustworthy fellows. The day after it was installed, I had a plumber at my house. He looked at their work and was impressed. He said it was much cleaner than the way HVAC people usually do it.
Lito Ricasata
19:03 08 Apr 25
First time prospective client of Guthrie and Sons. Very responsive staff in providing updates on my calls. Mario F. came over to check out my existing cooling and heating system and is very thorough and professional in providing necessary information related to repair/upgrades. Pending his quote, my experience with Guthrie and Sons is top notch and most highly recommended.

Updated review: Kareen, Daniel and Michael worked on the AC replacement, relocation of furnace to the attic and replacement of ductwork. Very professional and knowledgeable team in my opinion. Completed the work in a timely and very satisfactory manner.

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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