Gutherie & Son's Service Area

Service Area

We offer a full range of heating and air conditioning services, including maintenance, repair, installation, and replacement, throughout San Diego County.

Serving San Diego County, CA

Guthrie & Sons Heating, Air & Solar offers expert repair, maintenance, installation, and system replacements for furnaces, heat pumps, ductless mini-split systems, and air conditioning throughout San Diego County, CA, including:

Your Local HVAC & Solar Experts

Guthrie & Sons is proud to be your local HVAC and solar company. You can count on us to handle any job, including:

  • Air conditioning services: Whether you need AC installation for a new home or AC repairs for a malfunctioning heat pump, our technicians can handle it.
  • Heating services: Trust us to take care of any heating installation, repair, or maintenance needs efficiently.
  • Solar services: Our experts have the tools and skills needed to handle your solar panel installation with ease.

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 $1,000 Off a New System

Receive up to $1,000 in manufacturer rebates on select systems. Not valid on “Worry Free System”. 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 10/31/2026.

  • 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. Not valid on “Worry Free System”. 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 10/31/2026.

  • 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 10/31/2026.

  • 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 10/31/2026.

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.

John Wood profile picture
John Wood
1 month ago
Every part of this experience shows the value of working with well-organized and personable firms. From the moment I contacted Guthrie & Sons, every part of the experience has been first-rate. I had one cheaper quote, but the professionalism of this team convinced me that with an investment like this, it was worth it to work with THE A TEAM. Highly recommend!
Rex Roe profile picture
Rex Roe
3 months ago
Guthrie and sons are our Go To for all things AC! Easy to schedule service and very friendly staff. Mario came out today and quickly determined our issue and got us back on track. Thanks so much!
jacqulinet1 profile picture
jacqulinet1
3 months ago
I am very pleased with the service I received for replacing my furnace in my second story condo. This company really tries to please their customers, which is rare these days. Matthew and James were pleasant, knowledgeable and patient with my questions. The office was great about staying in touch regarding date and time to expect the technicians and providing the number to call for questions. I sam so happy I chose this company to do the job.
Keith Mar profile picture
Keith Mar
3 months ago
I was told by a couple other companies that I needed to replace my system. Vlad came out and made sure that my old system actually needed to be replaced and found it could be fixed for a fraction of the price. I appreciate the honesty and would definitely recommend. Edit the technician came out and made the repairs. He did a good job of explaining the situation and giving a couple options.
Darrell Brookstein profile picture
Darrell Brookstein
4 months ago
Have dealt with Guthrie & Sons regularly for more than 12 years. They are super good in every way re: heating and A/C. Special shout-out to their service man, Mario F, who checked out our systems yesterday. He was extraordinary and really helped us on several issues we noted, and a couple of issues he brought to our attention. Kudos!
Jim Hainline profile picture
Jim Hainline
4 months 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
4 months 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
7 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
7 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
7 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
7 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
8 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
8 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
8 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
8 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
9 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
9 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
9 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
9 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
11 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.

Get in Touch

Ready to take the next step? Our certified technicians are here to give you the home comfort you deserve.

We offer free in-home estimates on new installations and replacements.

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