San Diego, CA Heating Services

Local Heating Services in San Diego County

When it cools down, you need a good way to warm up. Guthrie & Sons is a heating service provider in San Diego, California, with fast, same-day service and fair, affordable prices. Our longtime family-owned company is trusted and respected throughout the area, and we work with all leading brands of furnace, heat pump, and ductless mini split equipment. A warm home is a happy home, and we’re here to help!

Stay Warm on Those Cool Days and Nights

Most days in San Diego are sunny and mild, but when the sun drops and that cool marine layer rolls in, it can feel colder than you’d expect. Nights in the low 50s and damp mornings by the coast are when you’re glad your heater is ready to go.

At Guthrie & Sons Heating, Air & Solar, we’re the San Diego HVAC contractor you can count on for fast repairs, new installations, and preventative maintenance for gas furnaces, electric furnaces, heat pumps, and ductless mini splits. Every home heats differently, and we make sure your system gets the attention it needs to keep your home warm and your energy bills low. Don’t go without heat or run a struggling heater that will lead to more costly repairs and real safety concerns—reach out to Guthrie & Sons for heating services in San Diego, California.

Clear Pricing and Smart Ways to Save on a New Heater

Clear Pricing and Smart Ways to Save on a New Heater

We know calling for heating service can feel overwhelming—and a lot of that stress comes down to money. You’re already worried about what it’s going to cost. The last thing you need is a company that overcharges, upsells, or sneaks in hidden fees. What you deserve is a company that’s upfront and honest with fair prices for the work involved. And that’s exactly what we do. Here are the other ways we help:

  • Free in-home estimates so you know exactly what your project will cost
  • Free online quoting tool for heater installations and replacements
  • Guidance with rebates and energy credits to lower your total bill
  • Seasonal promotions and special offers for extra savings
  • Financing options so you can move forward with the work now

When you work with us, you’ll never be left wondering what you’re paying for or why. We work with your schedule and your budget.

Maintenance Plans

Get Ahead of the Cold With Care That Pays Off

Even if your heater only runs for part of the year, the wear it takes adds up. Dust accumulates, parts loosen, and small electrical issues can happen from sitting idle. Before you know it, you’re stuck with higher bills and a system that frequently breaks down or requires a replacement far sooner than it should have.

You can drastically cut down on heating repairs and a premature heating replacement simply by scheduling routine heating maintenance each year. It isn’t nearly as difficult to manage with your busy schedule when you’re on our USA Membership plan. Think of it as a VIP pass for your furnace, heat pump, or mini split. You get automatic service reminders, priority scheduling, and member-only perks like discounted repairs and lower service fees.

And here’s another benefit—many people don’t realize that most HVAC warranties require annual maintenance to stay valid. Our plan checks that box for you while also keeping efficiency high and breakdowns low. Replacing a heater early can drain thousands from your wallet. A tune-up? It’s pennies in comparison. You can learn more on our website or talk to our team about signing up.

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Learn More About Our Local Heating Services in San Diego

Learn More About Our Local Heating Services in San Diego

At Guthrie & Sons, we offer top-rated heating repair, installation, maintenance, and replacement throughout San Diego County—including Chula Vista, Oceanside, Escondido, Carlsbad, Vista, and La Mesa, plus neighborhoods like La Jolla, Mission Hills, and San Ysidro.

No matter how you heat your home—or what kind of system you’re considering—we have all the San Diego heating services that you need.

Heat Pump Services

Heat Pump Services

Heat pumps are one of the most versatile and energy-efficient ways to keep your San Diego home comfortable year-round. Instead of making you manage separate heating and cooling systems, a heat pump does both—saving space, energy, and money on utility bills. At Guthrie & Sons, we provide complete heat pump services, including installation, repair, maintenance, and replacement.

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A heat pump doesn’t burn fuel like a furnace—it simply transfers heat. In the summer, the outdoor condenser pulls heat from inside your home and releases it outdoors. In the winter, it works in reverse, drawing heat from the outside air and sending it in through the indoor air handler. For your heat pump installation, we’ll recommend the features that matter most, like variable-speed compressors for steady comfort, ENERGY STAR® models for even better efficiency, and smart thermostat compatibility for easier control.

Heat pumps are pretty low maintenance, and there are easy things you can do at home to keep them in good shape. Swap out filters every 1–3 months, hose down the outdoor coil if it gets dusty, and keep at least two feet of clearance around the condenser. Twice a year, it’s smart to schedule professional heat pump maintenance. During a tune-up, we’ll clean both coils, test refrigerant levels, tighten electrical connections, lubricate motors, and make sure the defrost cycle works properly for the cooler months.

Because heat pumps work year-round, they’re bound to run into issues now and then. Common ones include refrigerant leaks (which cause weak heating and cooling), a stuck reversing valve (so the system won’t switch between heating and cooling), frozen coils from airflow problems, or worn-out capacitors and contactors that keep the unit from turning on. If you’re having issues with your unit, we’ll fix it with the right heat pump repair.

Most heat pumps last around 10–15 years, though here in San Diego the salty coastal air can sometimes shorten the outdoor unit’s life. If you’re facing big repairs—like a failed compressor, major refrigerant leaks, or a bad reversing valve—it may make more sense to replace than repair. When it’s time for a heat pump replacement, we handle everything: removing the old unit, checking your ducts for leaks, installing new line sets or wiring if needed, and setting up the new system with proper airflow testing.

Furnace Services

Furnace Services

Furnaces are still a favorite in many San Diego homes. They heat the house fast, handle the coldest nights better than most systems, and last a long time with the right care. We offer full furnace services—installation, maintenance, repair, and replacement—so whatever your system needs, we’ve got it covered.

When it’s time for furnace installation, we make sure you get a system that’s sized right for your home, installed safely, and built for efficiency. Whether you’re choosing gas or electric, we’ll discuss your options, explain features like variable-speed blowers and high-efficiency AFUE ratings, and install the unit. A properly installed furnace heats your home faster, uses less energy, and stays reliable for years.

With routine furnace maintenance, you can extend the life of your system and avoid costly breakdowns. Our furnace tune-ups include cleaning burners, inspecting the heat exchanger for cracks, replacing air filters, and testing safety controls. Regular maintenance keeps your furnace running efficiently, keeps energy bills lower, and ensures the system is safe to operate on those chilly nights when you really need it.

No one wants to be stuck without heat when the temperature dips. Our furnace repair services cover everything from faulty ignitors and blower motors to strange noises, poor airflow, and thermostat problems. We find the issue quickly and carry the right parts to get your heat back on fast. Same-day furnace repairs are standard with us.

If your furnace is over 15 years old, needs frequent repairs, or isn’t heating the way it should, you may be ready for a furnace replacement. We’ll help you decide if another repair is worth it or if a new system is the better investment. When replacement makes sense, we’ll install a high-efficiency unit that matches your home’s size and heating needs.

Ductless Mini Split Services

Ductless Mini Split Services

Ductless mini splits aren’t just for cooling—they’re also one of the best ways to heat some San Diego homes. They’re popular in older houses without ductwork, rental units, ADUs, garages, guest rooms, sunrooms, and more. Our mini split services cover installation, maintenance, and replacement, so you can count on reliable heat wherever you need it.

Our ductless mini split installation service makes it easy to add heat where you need it. We mount the indoor unit on a wall or ceiling and connect it to a small outdoor unit with minimal disruption. We’ll help you choose the right system size, efficiency level, and number of zones so you get reliable heat without wasting energy.

Even though they’re low-maintenance, mini splits still need attention to run their best. Dusty filters, clogged drains, or dirty coils can cut efficiency and even cause leaks. With our ductless mini split maintenance, we handle all the cleaning, refrigerant checks, and electrical testing so your unit stays dependable when the temperatures drop.

If your mini split is past the 10–15 year mark, struggling to heat, or breaking down more often than not, our ductless mini split replacement service can help. We’ll remove the old system and set you up with a modern, efficient model that heats better, runs quieter, and saves money on your energy bills.

Heat Pump Water Heater Services

Heat Pump Water Heater Services

Heat pump water heaters work a little differently than standard tanks—they pull warmth from the surrounding air and use it to heat your water. That design makes them much more efficient and a lot cheaper to run. They’re quickly becoming a popular choice in San Diego, and we provide full heat pump water heater services to help you make the switch.

Water heating takes up about 20% of your home’s energy use. With our heat pump water heater installation, you can cut that number down—these systems use up to 50% less energy than traditional models. We install options like the ProTerra Hybrid Electric heat pump water heater, which gives you reliable hot water while keeping utility costs in check.

HVAC System Services

HVAC System Services

San Diego homes are all over the map—bungalows in North Park, newer builds in Carmel Valley, townhomes near Mission Valley. They all use heating and cooling differently. That’s why our HVAC system services are never one-size-fits-all. We match the system to your house and how you actually live in it.

When we do an HVAC installation, the first step is making sure the system is the right size for your home. Too small, and it won’t keep up. Too big, and it wastes energy. We look at your home’s layout, ductwork, and airflow to set everything up correctly, so you get even temperatures and a system that lasts.

Think of HVAC maintenance the same way you think about oil changes for your car. You wouldn’t drive for years without changing the oil and expect the engine to hold up—and your heating and cooling system is no different. Filters get dirty, coils collect buildup, and moving parts wear down over time. A simple tune-up twice a year keeps the system running smoothly, helps avoid costly breakdowns, and makes it last years longer.

When you need HVAC repair, it usually shows up in everyday ways: one room won’t stay comfortable, the system starts making unusual noises, or your energy bill jumps for no reason. We track down the issue—whether it’s a leak, a bad thermostat, or a worn-out motor—and fix it so your system works the way it should again.

Most systems last 12 to 20 years. If yours is breaking down often or struggling to keep your home comfortable, it may be time for an HVAC replacement. We’ll help you compare the cost of another repair against a new, high-efficiency system, then install the one that makes the most sense for your home and budget.

As a Daikin Pro Elite Contractor, we offer HVAC system monitoring that keeps track of how your system is running in real time. If efficiency starts to slip or a part isn’t performing the way it should, we can spot it early and recommend fixes before it turns into a breakdown. And when you do need service, our techs already have your system data, which means faster visits, fewer surprises, and a system that’s fine-tuned to run the way it should year-round.

Keeping San Diego Homes and Businesses Warm Since 2005

Keeping San Diego Homes and Businesses Warm Since 2005

After a day out at Balboa Park, Liberty Station, or one of San Diego’s great restaurants, the last thing you want is to walk into a cold house. When it happens, it’s stressful—especially if you don’t have a heating company in San Diego you know you can rely on.

With Guthrie & Sons, now you do. We provide heating installation, heating maintenance, heating repair, and heating replacement services for homes and smaller commercial buildings throughout San Diego County.

Here’s what you can expect from our San Diego heating service:

  • 100% Customer Satisfaction Guarantee: If you’re not happy, we’ll make it right.
  • Upfront, Honest Pricing: No hidden fees, no surprises—just fair, transparent quotes.
  • Expert Technicians: Our team services and installs all makes and models.
  • Family-Owned: We’re one of the last family-run HVAC companies in the area.
  • Lifetime Workmanship Guarantee: When we install something, we make sure it lasts.
  • 2-Year Labor Warranty: Every new installation comes with a 2-year labor warranty.
  • Free Quotes on New Systems: Get a clear installation estimate before buying.
  • Convenient Financing Options: We offer payment plans to fit your budget.
  • Property Protection Guarantee: From drop cloths to clean-up, we protect your space.

Frequently Asked Questions

The $5,000 rule is a quick way to decide if you should repair or replace your system. Multiply the age of your HVAC unit by the estimated repair cost—if the number is over $5,000, replacement usually makes more sense. At Guthrie & Sons, we’ll walk you through the math so you can make the choice that’s best for your home.

For most San Diego homes, setting your thermostat between 68–70°F in the winter strikes the right balance between comfort and efficiency. You can nudge it a few degrees lower when you’re asleep or out of the house to save even more. We’re happy to help you fine-tune your thermostat settings during a service visit.

It depends. If you’re only heating a small space for a short time, a single space heater might use less energy. But if you need to warm several rooms or run it for hours, it’s usually less efficient and can even drive your bill up. This also gets to be very unsafe. A well-maintained furnace spreads heat more evenly and often costs less to run over the long haul. We can help you figure out the best heating option for your space.

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.

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.
Patrick Smith
21:42 27 Jun 25
We had central heat and air put in two a year and a half ago. We've need to make a few adjustments to airflow to rooms since then. Each time, they are onsite withing 1-2 days and have resolved the issue each time. Their team is professional and incredibly friendly and knowledgeable. Very happy we went to Guthrie & Sons.
Bennie Beans
15:41 12 Jun 25
Mario was knowledgeable and courteous. He made sure our system would be sized right and that our existing ductwork was able to support the new system. The install team were prompt and efficient. They installed drop cloths and cleaned up inside and out after the job. So far I’ve been very happy with the work Guthrie and Sons have done for us.
Chris Toogood
21:52 06 Jun 25
Great local family business. And you actually get a live person when you call... And the technician was great and they come out quickly. No up selling too. He gave me two different price options on fixing my problem... band aid cheaper way or replacement. Great service.
Nick Schoch
17:58 27 May 25
Jonathan recently inspected the HVAC systems at both my front and guest houses, and I couldn’t be more impressed with his service. He was thorough in his assessment, clearly identifying areas of concern and explaining the recommended repairs in a way that was easy to understand. What stood out most was his honesty and patience—he took the time to answer all my questions without rushing, and I genuinely felt he had my best interest in mind. If you're looking for someone who is knowledgeable, professional, and respectful of your time and property, I highly recommend asking for Jonathan.
Neil Domingo
17:24 15 May 25
If you’re dealing with an AC issue, Mario is definitely one of the best! He quickly diagnosed the problem, worked efficiently, and provided a thorough solution. His expertise and professionalism were clear throughout the entire process. Highly recommend Mario for anyone looking to resolve their AC issues with a reliable and skilled technician.

Get the Heating Service You Need, Now—Schedule with Guthrie & Sons

When you let Guthrie & Sons Heating, Air & Solar into your home, you’re getting licensed, insured technicians who’ve spent years working in San Diego neighborhoods just like yours. We don’t rush through the job or bury you in jargon—we show up on time, walk you through what’s happening, and make sure your system is safe.

From Mira Mesa to Clairemont, Rancho Peñasquitos to Pacific Beach, families count on us to keep the heat on, and we don’t take this trust lightly. When you need a new heating system or your current one serviced, talk to our team about our heating services in San Diego, CA.

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