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.

Up to $1,500 Off a New System

Receive up to $750 in manufacturer rebates and up to $750 discount from Guthrie. Valid on select systems. 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 7/31/2026.

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 7/31/2026.

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 7/31/2026.

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 7/31/2026.

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.

Jim Hainline profile picture
Jim Hainline
3 weeks 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
3 weeks 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
3 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
3 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
4 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
4 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
5 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
5 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
5 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
5 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
6 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
6 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
6 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
6 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
7 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.
Trejos Marcela profile picture
Trejos Marcela
7 months ago
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 picture
Paula Remmel
7 months ago
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 picture
Bill Cogan
8 months ago
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 picture
Dani P
8 months ago
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 picture
David Downhour
8 months ago
We bought our HVAC system from Guthrie & Sons. They have been monitoring our system online and later noticed a heat sensor issue.

Zach M. came by and installed on new one. He was extremely professional and completed the installation promptly.

This was another great experience all around and I gladly recommend Guthrie and Son's for all your HVAC needs.

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.