Clairemont, San Diego, CA Furnace Replacement

Request a Quote for Your Furnace Replacement in Clairemont

If your furnace has stopped working or yours is older and keeps breaking down, Guthrie & Sons Heating, Air & Solar can help you get a new one you can count on. We’ll go over your options, give you honest pricing, and get it installed quickly so you can warm the place back up. Reach out today for a quote on your furnace replacement in Clairemont, San Diego.

A New Furnace From Guthrie & Sons Means a Warmer, More Comfortable Home

Even in sunny San Diego, Clairemont cools off fast once the sun goes down. Temperatures in the 40s don’t sound bad until you’re feeling it inside your home, and that’s when a working furnace really matters. If yours has stopped keeping up, Guthrie & Sons Heating, Air & Solar is a local furnace company in San Diego, California, that provides residential and commercial furnace replacement services in Clairemont. We’re a family-owned business that’s watched the Clairemont community grow over the years, and we’ve worked on several properties in this area.

You deserve a service experience that’s straightforward, reliable, and focused on what actually matters—not one that feels rushed or full of upsells. We install trusted furnace brands like Daikin and Rheem, and we’ll be here to maintain and service your system for the next decade and beyond. Call or send us a message today to talk about your Clairemont furnace replacement.

Honest Pricing, Real Service—That’s How We Do Furnace Replacements

Honest Pricing, Real Service—That’s How We Do Furnace Replacements

Replacing a furnace can feel stressful—you’re trying to make the right call without getting blindsided by costs or pressure. At Guthrie & Sons, we keep it simple. We give you clear pricing and explain your options so you can make an informed decision. This is your home and the system that you’ll use for years. With us, you’ll have access to:

  • Free in-home estimates so you know your costs upfront
  • An easy online quote tool for quick, no-pressure estimates from home
  • Seasonal specials and limited-time offers to help you save more money
  • Financing options that make upgrading more manageable on your budget

You deserve to feel confident about the work being done in your home and who’s doing it. We’ll make sure you understand what you’re paying for, what your options are, and that the job’s going to be done right.

Searching for a Furnace Replacement Near Me? We’re Right Here in Clairemont

Searching for a Furnace Replacement Near Me? We’re Right Here in Clairemont

If you're looking for a furnace replacement quote near me, Guthrie & Sons can get you one right away. We know this mesa inside and out. We’ve worked on the classic mid-century ranch houses of the area, the duplexes, and the many townhomes and condos that define Clairemont Mesa.

You can count on our experts for fast furnace replacement services in North Clairemont, Clairement Mesa East, and Clairemont Mesa West. We also serve Bay Park and Bay Ho, along with homes and businesses near San Diego Mesa College and out by Marian Bear Memorial Park. For the furnace replacement Clairemont, San Diego, CA, trusts, choose Guthrie & Sons.

What Happens During Your Clairemont, San Diego Furnace Replacement

What Happens During Your Clairemont, San Diego Furnace Replacement

For many homeowners, replacing a furnace isn’t something you do often—it might even be a first. Others have gone through it before, either in the same home or a previous one. No matter where you fall, our top priorities are always your safety and the performance of your equipment. Every installation we complete meets our own high standards, along with all manufacturer requirements and local San Diego building codes. Here’s what you can expect from our Clairemont furnace replacement services:

It starts with a visit to your home so we can see what you’re working with. Your technician will inspect the current furnace, ductwork, gas or electric connections, and ventilation setup. We also take measurements to make sure your new furnace is the right size. That matters so much—if your furnace is too small, it will run constantly and still struggle to keep up; too big, and it will turn on and off too often, wearing out faster and wasting energy. It’s not uncommon to see the wrong-size furnace originally installed. If you’ve renovated your home, you may need a larger heating system as well.

Once everything’s ready, we disconnect and remove the old furnace carefully. That means turning off the power and gas, sealing lines, and keeping your home protected while we work. If the venting or duct connections are worn or outdated, we take care of those before installing the new unit so everything meets code and safety standards.

Before your new furnace goes in, we prep the space to make sure it’s a perfect fit. That might include updating the stand, adjusting ducts, or upgrading vent materials. In older Clairemont homes—especially those with furnaces tucked into closets or tight attics—we make sure there’s enough clearance for safe airflow and easy maintenance access.

Your new furnace is then set in place, leveled, and connected to your home’s gas line, power supply, and duct system. Every connection is double-checked for leaks, and we make sure all venting is properly sealed. Everything is installed to manufacturer and city requirements so your warranty stays valid and your system runs safely.

Once the system’s installed, we run your furnace through several heating cycles, check temperature rise, balance airflow, and calibrate the thermostat. These adjustments make sure your furnace runs efficiently and keeps every part of your home comfortable without hot or cold spots.

Before we wrap up, your technician will walk you through how to use your new furnace—how to adjust the thermostat, when to change filters, and what to expect during your first few months of operation. We’ll also go over your warranty information and our own labor coverage, so you know exactly who to call if you ever need help or have a question down the road.

When you’re deciding on the best furnace to buy, we’ll walk you through what really matters, which are things like energy efficiency and Energy Star certification. We’ll also explain variable-speed motors, which adjust airflow automatically so they’re not always on full blast, and talk about your smart thermostat compatibility.

If you’re considering other options, we can also share more about how a heat pump installation can benefit you. These systems are so highly recommended because they use far less energy than a traditional furnace and can handle both your heating and cooling in one system.

Make Your Furnace Last with Regular Care and Our Membership Plan

Make Your Furnace Last with Regular Care and Our Membership Plan

Once your new furnace is installed, you’re going to want to protect it. As it starts to rack up some miles—and a little dust—keeping up with regular furnace maintenance makes all the difference. That means scheduling a furnace repair the moment you notice something off and booking a yearly furnace tune-up so we can clean, test, and fine-tune everything before winter. A furnace repair every now and then is completely normal as a system ages, but the frequent repairs you may have been dealing with are not. This is just proof that a furnace replacement is worth it.

We’re always looking out for our customers, which is why we created the USA Membership Plan. It keeps your maintenance on track automatically, with reminders, priority scheduling, discounted repairs, and lower service fees available as perks. You can learn more from your technician or give us a call with any questions!

Frequently Asked Questions

Most furnaces here last about 15 to 20 years, depending on how often they’re used and how well they’re maintained. Systems that get yearly tune-ups tend to run cleaner and last longer because small issues are caught before they cause major wear. In milder climates like ours, a well-installed furnace can often stay efficient for two decades or more.

Furnace size is measured in BTUs (British Thermal Units). A smaller home around 1,200 square feet might need a 40,000–60,000 BTU furnace, while a larger 2,000-square-foot home could need something closer to 80,000–100,000 BTUs. We use a process called a Manual J load calculation, which factors in your home’s size, insulation level, window placement, and duct layout. This ensures your furnace is powerful enough to heat your home without wasting energy or straining the system.

Even a brand-new furnace needs routine care. A yearly professional tune-up helps keep parts clean, ensures safe operation, and maintains efficiency. You should also replace or clean air filters every one to three months.

Furnace efficiency is measured by AFUE (Annual Fuel Utilization Efficiency), which shows how much fuel is turned into usable heat. For example, a 95% AFUE furnace converts 95% of the fuel it burns into heat for your home, losing only 5% through exhaust. Higher ratings mean lower energy bills and better long-term savings.

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 $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 12/31/25 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.

  • 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.

  • 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 12/31/25 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 profile pictureTania 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 profile pictureTrejos 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 profile picturePaula 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 profile pictureBill 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 profile pictureDani 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 profile pictureDavid 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 profile pictureRachel 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 profile pictureLiz 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 profile pictureNeil 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 profile pictureTrae 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 profile pictureDavid 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 profile pictureErin 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 profile pictureTomankhamen
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 profile pictureGabrielle 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 profile picturerobert 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 profile pictureK 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 profile pictureLeRoy 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 profile pictureNannette 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 profile pictureMeghan 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 profile pictureLaurie 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 Clairemont Furnace Replacement

Your home needs a good heating system—end of story. Blankets and space heaters aren’t a solution when the temperature drops, and running a failing furnace is just asking for trouble. The same goes for hiring someone who isn’t qualified to install it correctly. Our licensed and insured technicians include Nate-certified professionals who are tested to be among the best in the industry. We have experience in spades and some of the nicest people you’ll ever meet! We’re here to help you enjoy a safe, warm home. Contact us about your furnace replacement in Clairemont, San Diego, CA, today.

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