San Diego, CA Furnace Replacement

Get a Quick Quote for Your Furnace Replacement in San Diego

Do you have a furnace that’s broken down beyond repair or just too old to keep fixing? Guthrie & Sons Heating, Air & Solar can help you find a great furnace at a great price. Our team will walk you through your options, explain everything clearly, and install a new, efficient system you can depend on for years. Contact us for a furnace replacement quote near me!

Replace Your Furnace and Enjoy a New System That Works Better

We know you just want a warm home to fall asleep in at night and wake up in the morning. Despite all of our sunshine, San Diego can get pretty chilly—and when your furnace gives out, it’s hard to get comfortable. But finding the right replacement isn’t always easy. There are so many options, and too many furnace replacement companies try to upsell you on things you don’t really need. So, what do you get? Who do you trust? That’s where Guthrie & Sons Heating, Air & Solar comes in to make everything easier.

We’re a local, family-owned company that has completed hundreds of 5-star rated furnace replacements throughout San Diego. We’re experienced in both residential and commercial furnace replacement, and we’ll help you find the best furnace for your space and budget. Reach out for a quote on your San Diego furnace replacement today!

Clear, Fair Pricing for a New Furnace System

Replacing a furnace is a big investment, and you want to know exactly what you’re paying for. At Guthrie & Sons, we keep things totally transparent. No hidden charges, no upsells—just fair pricing and clear communication from start to finish. Here’s what you can expect with your San Diego furnace replacement:

Free in-home estimates so you know your costs upfront
Easy online quote tool for quick, no-pressure estimates
Seasonal specials and limited-time offers for added savings
Financing options that let you move forward without waiting

We’re technicians, not salespeople—and that’s an important difference. Just have a few questions for now? Ready for a quote or maybe a second opinion? Whatever you need, we’re here for it all.

Searching for a Furnace Replacement Near Me? We Go All Over San Diego

If you’re searching for a furnace replacement near me in San Diego, Guthrie & Sons is never far away. Our team installs new furnaces all across the city—from coastal spots like La Jolla and Pacific Beach to central neighborhoods such as North Park, Hillcrest, Clairemont, and Tierrasanta. We’ve worked in all kinds of San Diego properties—older craftsman homes, mid-century ranch houses, new-build condos, ADUs, and even small local businesses that need reliable heat for customers and staff.

Wherever you are, we’ll show up fast, provide a clear, fair quote, and handle the installation with care. For trusted furnace replacement in San Diego, you can always count on Guthrie & Sons.

What to Expect During Your Furnace Replacement

For some of our customers, this might be the first time replacing a furnace. Others have gone through it before—either in the same home or somewhere else. No matter your situation, our top priority is safety. Every installation is done to meet our own high standards, the manufacturer’s requirements, and all local building codes. Here’s what you can expect from our San Diego furnace replacement services:

We start by visiting your home to see what you’re working with. Our technician will look at your current furnace, ductwork, gas and electrical connections, and ventilation setup. We take detailed measurements to calculate the proper furnace size. Many homes have the wrong-size furnace, and if you’ve added on or renovated, your old one may not be enough anymore. This ensures your new furnace heats efficiently without short cycling or wasting energy.

Once you’ve chosen your replacement system, we’ll carefully disconnect and remove the old one. This includes turning off power and gas, capping lines, and protecting nearby walls and flooring. If your old unit has damaged venting or deteriorated parts, we’ll take care of those before continuing.

Before the new furnace goes in, we’ll prep the space so everything lines up perfectly. This might mean updating the platform, adjusting duct connections, or replacing outdated vent materials. For older San Diego homes—especially those with tight attic or closet installations—we make sure there’s proper clearance and airflow.

Your new furnace is set in place, leveled, and connected to your home’s gas line, power supply, and duct system. We check every connection for leaks or loose wiring and make sure the venting system is sealed properly.

Once installed, we run your furnace through a full heating cycle to make sure everything’s working as it should. Any needed adjustments are made on the spot. You’ll know your system is running safely and efficiently before we leave.

We’ll wrap up by walking you through the system, showing you how to use the thermostat, change filters, and understand basic maintenance. We also go over warranty coverage and service reminders so you know what to expect moving forward. You’ll feel confident and comfortable with your new system before we head out.

When it comes to what’s the best furnace to buy, we’ll walk you through the options and explain efficiency ratings like AFUE (Annual Fuel Utilization Efficiency)—which measures how much of your furnace’s fuel is converted into usable heat. We’ll also cover features like variable-speed blowers, compatibility with smart thermostats, and noise reduction options.

If you’re interested in a more energy-efficient alternative, we can share information on a heat pump installation as well so you can compare all your heating options before you decide.

Protect Your New Furnace with Repairs, Maintenance, and Our USA Membership Plan

Once your new furnace is installed, keeping it in great shape is the key to making it last. Regular furnace repair and maintenance not only keeps your system running smoothly but also help it stay efficient and prevents small problems from turning into expensive ones. At Guthrie & Sons, we provide complete furnace maintenance services designed to protect your investment and lower your long-term costs.

Our technicians clean, inspect, and fine-tune every part of your system to keep it safe and reliable all winter. To make things easy, our USA Membership Plan includes automatic reminders, priority scheduling, repair discounts, and more—everything you need to make sure your new furnace lasts longer and costs you less over time. Talk to us about signing up, and we’ll tell you so much more about why it’s worth it.

Frequently Asked Questions

Most furnaces last between 15 and 20 years, depending on how often they’re used and how well they’re maintained. In San Diego, where heaters don’t run as hard as they do in colder climates, many systems make it past the 20-year mark. The key is regular maintenance—keeping filters clean and scheduling yearly tune-ups can easily add a few extra years of reliable service.

The right furnace size depends on more than just your home’s square footage. We look at insulation quality, ceiling height, window type, and even how much sunlight your home gets during the day. A furnace that’s too large will cycle on and off constantly, while one that’s too small won’t keep up on cold nights. At Guthrie & Sons, we perform a full heat load calculation to make sure your system is perfectly sized for your home’s needs.

A new furnace should be serviced once a year to stay safe, efficient, and under warranty. During maintenance, our technicians clean burners, check electrical and gas connections, inspect the heat exchanger, and test overall performance.

Furnaces are rated by AFUE—Annual Fuel Utilization Efficiency—which measures how much fuel is turned into usable heat. An 80% AFUE furnace converts 80% of the fuel into heat, while a 95% AFUE model wastes very little energy. High-efficiency furnaces cost more upfront but can significantly lower monthly heating costs and qualify for rebates and energy credits.

INSTALLATION

Up to $11,225 Off a New Heat Pump

Receive up to $8,000 in HEEHRA rebates, up to $625 in Comfortably California rebates, and up to $2,600 in Federal Tax Credits when you install a new heat pump system. Must be income-qualified to receive HEEHRA rebate. Valid on residential properties only. Valid on select systems. Rebates available until funds last. System must be installed by 1/31/26 to receive Federal Tax Credits. Restrictions apply. See dealer for details.

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. Offer expires 1/31/26.

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. Offer expires 1/31/26.

INSTALLATION

$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 1/31/26 to receive this tax credit. Restrictions apply. See dealer for details.

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.

Tania Reyes

23:47 05 Dec 25

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

17:27 04 Dec 25

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

06:34 02 Dec 25

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

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.

Talk to Us About Your San Diego, CA Furnace Replacement

A new furnace changes everything, and we want you to experience all of the benefits. Your home heats up the way it should, your energy bills are likely lower, and you don’t have to worry about more repairs. You’ll just be able to turn on the heat and know it’s going to work. Sounds great, right? At Guthrie & Sons Heating, Air & Solar, we do the furnace replacement San Diego, CA, has relied on for decades. Call or send us a message to get started! We take care of you like family here.

8248 Ronson Road
San Diego, CA 92111

(619) 269-3013

San Diego, CA Furnace Replacement

Get a Quick Quote for Your Furnace Replacement in San Diego

Replace Your Furnace and Enjoy a New System That Works Better

Clear, Fair Pricing for a New Furnace System

Searching for a Furnace Replacement Near Me? We Go All Over San Diego

What to Expect During Your Furnace Replacement

We Start with a Home Visit and System Evaluation

We Carefully Remove Your Old Furnace

We Prep the Area for Your New System

We Install Your New Furnace

We Test, Calibrate, and Fine-Tune Everything

We Walk You Through How It Works

Protect Your New Furnace with Repairs, Maintenance, and Our USA Membership Plan

Frequently Asked Questions

How Long Does a Furnace Typically Last?

How to Choose the Right Size Furnace for a Home?

What Are the Maintenance Requirements for a New Furnace?

What Are the Energy Efficiency Ratings for Furnaces?