Get In Your Comfort Zone

Your Go-To Team for Heating, Cooling, and Solar in the San Diego Area

At Guthrie & Sons, we’re not here to sell you something—we’re simply here to help! Since 2005, San Diego homes and businesses have trusted us to deliver expert HVAC and solar services with honest advice, fair pricing, and lasting results. That’s the kind of care we believe in. Friendly service. Smart savings. Zero pressure. Schedule your appointment today!

HEEHRA PROGRAM HAS RELAUNCHED!

Save up to $11,225 in rebates and incentives on a new HVAC system.

OUR SERVICES

What We Offer

Air Conditioning
Maintenance

Extend the lifespan of your cooling system with our thorough air conditioning maintenance services.

Air Conditioning
Repair

Beat the heat with our prompt and effective air conditioning repair services.

Air Conditioning
Installation

Enjoy optimal cooling with our top-notch air conditioning installation services.

Heat Pump
Installation

Stay comfortable year-round with our expert heat pump installation services.

Heating
Maintenance

Ensure your heating system runs efficiently all winter long with our comprehensive heating maintenance services.

Heating
Repair

Our expert technicians provide reliable heating repair services to keep your home warm and comfortable.

Heating
Installation

Upgrade to a high-efficiency heating system with our professional heating installation services.

Heat Pump
Water Heater
Installation

Save on energy costs with our efficient heat pump water heater installation services.

How Can We Help You Today?

Every home and business has different HVAC needs, and Guthrie & Sons can meet them all. As a local HVAC and solar company, we offer a full range of residential and commercial services, handled by our expert NATE-certified technicians. Whether it’s maintenance, repairs, or a new system, we’ll make sure you get the right service at the right price.

Call or schedule online, and we’ll find a time that works for you. We have 24/7 live answering in our office and flexible appointment times.
Our technician will check out the issue or discuss the system you’re considering. You’ll get a clear, no-pressure quote for your service.
Once you give us the green light, our team gets to work. We respect your home and your time, working quickly and cleaning up after we’re done.

Heating and Cooling Services

You expect your heating and cooling to just work, and when it doesn’t, you need a team you can trust to solve the problem. At Guthrie & Sons, we repair, maintain, and install all types of HVAC systems, including heat pumps, ductless mini splits, and traditional furnace and central air units. Whether your system is acting up or you’re ready for an upgrade, we have the heating and air conditioning services that you need when you need them.

Air Conditioners
Ductless Mini Splits
Furnaces
Heat Pumps

If you want fewer headaches and more savings, keeping your system maintained is the way to go. Our USA Membership Plan makes it easy—no remembering, no last-minute calls. We’ll remind you when it’s time, give you front-of-the-line priority service, and even knock money off your bill. Talk to our team about signing up!

Indoor Air Quality Services

We love being outside in sunny California, but we bring more than memories back indoors. Dust, pollen, smoke, and bacteria all find their way into your home and stay in the air you breathe. Over time, that buildup can impact your comfort—and your health. Our indoor air quality services help clean things up and keep your home feeling fresh. Let’s talk about how to make your air healthier with the right IAQ product.

Air Purifier Installation
Dehumidifier Installation
Duct Sealing
Thermostat Repair
And More

Solar Services

San Diego gets more than enough sunshine—why not put it to work for your home? Guthrie & Sons installs solar panels, battery backup systems, and EV chargers to help you lower energy bills and depend less on the grid. If you’re planning to stay in your home long-term, solar is one of the smartest investments you can make. We’ll walk you through the options and handle everything from permitting to install. Not sure where to start? That’s what we’re here for!

Water Heater Services

A reliable water heater keeps everything running—showers, dishes, laundry, and daily routines. If you’re replacing an old one or putting in a system for a new home, we’ll help you choose what fits best. We install both traditional tank water heaters and high-efficiency heat pump models.
Heat pump water heaters use a fraction of the energy so you get the same hot water for way less money. Ready to upgrade? Let’s get started!

What Is the Guthrie & Sons Way?

Around here, we like to say we live and work by The Guthrie Way. It’s more than just a saying—it’s how we treat people, how we do business, and how we’ve built lasting relationships across San Diego. We don’t cut corners. We don’t upsell. We show up, do the job right, and make sure you feel good about choosing us. That’s what our family name stands for.

100% Customer Satisfaction Guarantee: We’re not happy until you are.
Honest, Transparent Pricing: You’ll always know the cost upfront—no hidden fees.
Highly Trained Technicians: Our certified techs service and install all makes and models.
Family-Owned and Operated: We’re proud to be one of the few left in the region.
Lifetime Workmanship Guarantee: If something isn’t right, we make it right.
2-Year Labor Warranty: We ensure extra protection is included with every new install.
Free Quotes on New Installations: Get clear, pressure-free pricing before you buy.
Free Online Quoting Tool: Check new system pricing from the comfort of your couch.
Flexible Financing Options: We provide affordable payment plans to fit your budget.
Tax Credit and Rebate Support: We help you find and apply for all eligible rebates and tax incentives.

Give us a call or schedule online—we’ll be there when you need us.

Federal Tax Credits Are Going Away in 2026!

Save up to $3,200 on your next HVAC, solar, insulation, duct sealing, or electrical panel upgrade project. Take advantage while savings last!

PROMOTIONS

Special Offers to Help You Save Even More

We’re committed to keeping your home comfortable—and your costs down. Check out our latest specials and see how much you can save on your next visit.

INSTALLATION

$8,000 HEEHRA Rebate

Get income-qualified and receive an $8,000 rebate on a new heat pump system. Can be combined with up to $625 Comfortably California rebate, $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.

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.

ANNIVERSARY SALE

$2,600 Heat Pump Federal Tax Credit

Valid on select systems. Must be installing a heat pump system with electrical wiring or panel upgrade. Valid on a primary residential home only. Can be combined with HEEHRA rebates and up to $625 Comfortably California rebates. System must be installed by 12/31/25 to receive this tax credit. Restrictions apply. See dealer for details.

OUR SERVICE AREA

Proudly Serving San Diego County

With years of local service experience, Guthrie & Sons is proud to be the go-to source for reliable HVAC and solar services in San Diego. Whether you need air conditioning services in Chula Vista, heat pump installation in Escondido, or heating repairs in La Mesa, our expert HVAC team is here to help keep your home safe and comfortable all year.

OUR REVIEWS

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.

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 needed a new A/C and furnace system. Vlad came by to listen and assess our needs, recommend our new Daikin, and put forth our best estimate.

Carson C. and Michael J. came by to install our unit. They were on time, extremely professional and worked diligently to complete everything. They listened to our needs throughout and made adjustments to our specifications. Carson did not leave until we were totally happy with our unit.

This was a 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!

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.

CONTACT US

Schedule With Guthrie & Sons Today

If you have questions or if you’re ready to book an appointment with our team of certified technicians, give our office a call! We offer 24/7 live answering! For your convenience, you can also book your appointment instantly online.