Solar and HVAC Services in San Diego, CA

Need a quick AC repair? Thinking about upgrading your heating system? Curious if solar power could save you money? At Guthrie & Sons Heating, Air & Solar, we’re your all-in-one team for home comfort in San Diego.

With transparent pricing, skilled service, and no pushy sales, we’ll make sure your home or business stays comfortable — today, tomorrow, and for years to come. Contact us for an estimate!

San Diego’s Choice for Cooling, Heating, Indoor Air Quality, and Solar Services

Most days, San Diego’s sunshine makes it easy to stay comfortable. But when the heat rises or the nights get chilly, Guthrie & Sons is here to keep your home or business feeling just right with our full range of residential and commercial HVAC services in San Diego, California.

From installing AC in new builds and older homes to keeping your heater running strong, we’re your go-to team for installation, repair, maintenance, and replacement services. Need cleaner air or interested in making the switch to solar? We offer indoor air quality solutions and solar services too — all under one roof!

At Guthrie & Sons, we’re more than a business — we’re a family legacy. Passed down through generations, our company is built on trust, care, and a commitment to doing things the right way. That means when you call us, you get the family treatment — genuine care, honest solutions, and no pushy sales.

And with NATE-certified technicians who are truly the best in the business, you can expect five-star service every time. Contact us today — we’re ready to help!

The Guthrie Way

How We Do It the Right Way — The Guthrie Way

As a family-owned company with our name on the line, we take great pride in our work. That means we do things the Guthrie Way. Here’s what you can expect when you call us for service:

5-Star Service

We take pride in setting the gold standard for HVAC service in the local area. Our dedicated team of experts is committed to delivering nothing less than 5-star service in every aspect of our work. Your comfort is our commitment.

Honest Pricing

When we say no hidden fees, we mean it. Our pricing is upfront and transparent, with no fine print or gimmicks. Before we get to work, we’ll walk you through your options and give you a clear breakdown of the costs.

Expert Technicians

Not all technicians are created equal. Ours are NATE-certified — the highest standard in the industry. Whether it’s a simple repair or a complex installation, we bring experience and expertise to every home we enter.

Family Values

We’ve been family-owned and operated for generations, and we treat every customer like one of our own. We’re proud to bring personal care and dedication to every job. When you call us, you’re not just getting a service — you’re becoming part of the Guthrie family.

No Upsells

We’re not here to sell you what you don’t need. Our job is to find the best solution for you, not our bottom line. You can always count on our team for honest recommendations that prioritize your needs and your budget.

Protect Your Home and Wallet With Our USA Membership Plan

Your comfort, health, and safety are our priorities, and we know that a reliable heating and cooling system is key to all three. While plenty of HVAC companies offer maintenance plans, our USA Membership Plan goes further to better meet your needs and save you money.

Regular maintenance is the best way to avoid costly repairs and keep your system running longer. We’ll reach out when it’s time for service, so you never miss a tune-up, even with your busy schedule. As a member, you’ll enjoy repair discounts, lower service call fees, and priority scheduling. Talk to your technician about signing up, or give our office a call to learn more!

Budget Concerns? We Offer Flexible Financing for Your Comfort Needs

Nobody plans for a heating or cooling system to fail, but when it happens, Guthrie & Sons has options to help make investing in new equipment more affordable. Our flexible financing options help you get the heating and cooling system you need now while paying over time. Ready to explore your options? Call us at (619) 269-3013 — we’ll walk you through everything.

Heating and Cooling Services in San Diego, CA

Explore our full range of HVAC services below or reach out to our team to speak to someone on the phone! We’re always happy to answer any questions you may have or help you schedule an appointment.

Air Conditioning Services

San Diego may not face scorching heatwaves, but those warm days can still make your home uncomfortable. At Guthrie & Sons, we’re your trusted air conditioning company in San Diego for keeping things cool.

Did you know that upgrading to an energy-efficient air conditioning system can qualify you for valuable tax incentives and rebates? We’ll help you find and apply for these savings, too!

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Air Conditioning Installation

Guthrie & Sons provides expert air conditioning installation for new builds and homes without existing AC. We design custom systems that fit your space, maximize energy efficiency, and keep your home cool. From ductwork to system selection, we handle it all.

Air Conditioning Maintenance

Protect your system and prevent costly breakdowns with our air conditioning maintenance services. Our technicians perform AC service tune-ups to boost efficiency and extend your air conditioner’s life.

Air Conditioning Repair

When your AC struggles to keep up, makes odd noises, or won’t turn on, you need professional air conditioning repair services. At Guthrie & Sons, we diagnose issues quickly using advanced tools and years of experience. Our technicians complete most repairs in a single visit.

Air Conditioning Replacement

If your air conditioning unit is over 10 years old, inefficient, or requires frequent repairs, an air conditioning replacement may be the best choice. Our team helps you select the right energy-efficient system for your home, ensuring better cooling and lower energy costs.

Mini Split Services

A ductless mini split system is a flexible, energy-efficient solution for heating and air conditioning your San Diego home. With zoned temperature control, you can adjust the comfort level in individual rooms, saving energy by heating and cooling only where it’s needed.

Whether you’re considering a new installation or need care for an existing system, Guthrie & Sons has the ductless mini split services in San Diego that you need, when you need them.

Mini Split Installation

Ductless mini splits are perfect for heating and cooling spaces like converted garages, sunrooms, or guest suites without the major work involved with installing ductwork. We customize and install ductless mini split systems that meet your unique requirements.

Mini Split Maintenance

Salt air, dust, and everyday use can take a toll on your system, especially in our coastal climate. Our ductless mini split maintenance includes deep cleaning filters, checking refrigerant levels, and inspecting electrical components.

Mini Split Repair

When your mini split isn’t heating or cooling properly, displays error codes, or cycles unevenly, a ductless mini split repair can get to the bottom of it. We’ll quickly identify issues like refrigerant leaks, electrical malfunctions, or faulty sensors and restore your comfort in no time.

Mini Split Replacement

If your mini split struggles to keep up, needs frequent repairs, or drives up your energy bills, a ductless mini split replacement may be your best option. We check out your current unit’s condition and recommend a new, energy-efficient model designed for San Diego’s climate.

Heat Pump Services

Looking for an energy-efficient way to heat and cool your home? Heat pumps work by moving heat in or out of your home, providing both heating and cooling without the need for separate systems.

At Guthrie & Sons, we offer expert heat pump services in San Diego, including installation, maintenance, repair, and replacement to keep your home comfortable year-round.

Heat Pump Installation

A heat pump installation is a smart choice for San Diego homeowners looking for efficient heating and cooling without the hassle of separate systems. We’ll assess your home’s layout, insulation, and energy needs to recommend the ideal unit.

Heat Pump Maintenance

Even in a mild climate, heat pumps work hard year-round, making routine maintenance a must. We recommend biannual heat pump maintenance tune ups to check refrigerant levels, clean coils, and ensure all components are functioning properly.

Heat Pump Repair

Heat pumps can run into trouble over time, especially with regular use. You might notice weak airflow, uneven cooling, or strange noises. We troubleshoot quickly, identifying issues like refrigerant leaks, electrical malfunctions, or sensor problems.

Heat Pump Replacement

When repairs become too frequent or your system has called it quits, a heat pump replacement can save you time, money, and stress. Aging units lose efficiency, leading to higher energy bills. We’ll install a modern, high-efficiency system that keeps you comfortable and your costs down.

HVAC Services

Your home often relies on a combination of systems, like an air conditioner and furnace or a heat pump and air conditioner. Whether you’re managing one unit or a complete HVAC setup, we provide HVAC services to ensure everything runs smoothly.

HVAC Installation

Installing a new HVAC system is about more than choosing a unit — it’s about finding the perfect fit for your home. We carefully evaluate your space, factoring in size and airflow needs, to recommend the ideal heating and cooling solution for lasting comfort.

HVAC Maintenance

Skipping HVAC maintenance is like skipping oil changes for your car — it’s only a matter of time before something goes wrong. We follow both manufacturer guidelines and our own thorough checklist to catch small issues early and keep your system running strong.

HVAC Repair

Strange noises, weak airflow, or rooms that just won’t cool or heat evenly? Those are your HVAC’s way of asking for help. Waiting too long can turn a minor fix into a major breakdown. We respond quickly, figure out what’s going on, and make expert HVAC repairs.

HVAC Replacement

If constant repairs and rising energy bills are wearing you down, let’s schedule an HVAC replacement. We work efficiently to get your replacement installed with minimal disruption. Once it’s up and running, we’ll walk you through how to use it and share maintenance tips.

Heating Services

San Diego’s crisp mornings and cool evenings can still have you reaching for the thermostat. Whether you heat your home with a furnace, heat pump, or mini split, we’ve got the know-how and heating services in San Diego to keep it running right.

From installations and maintenance to repairs and replacements, we’re here to make sure your home stays cozy.

Heating Installation

Need to warm things up? We’re here to help you find the perfect heating system for your home. Whether it’s a furnace, heat pump, or mini split, we’ll walk you through your options and install a system that’s built to last.

Heating Maintenance

Your heater needs more than just a new air filter to stay in top shape. When you call us for heating maintenance, we’ll clean, inspect, and fine-tune every part. That means fewer breakdowns, lower energy bills, and a whole lot more comfort.

Heating Repair

If your heater’s blowing cold air or making noises that belong in a horror movie, it’s time to call us. We’ll figure out what’s going on, explain the fix, and get your home warm again. No runarounds, no upsells — just honest heating repairs that get the job done.

Heating Replacement

When your heater’s on its last legs, a heating replacement doesn’t have to be so hard. We’ll walk you through your options to find a system that’s efficient, reliable, and tailored to your home. Once it’s installed, we’ll test it, fine-tune it, and show you how to keep it running.

Furnace Services

Furnaces are perfect for San Diego homes when those chilly mornings and breezy nights roll in, offering fast, dependable heat for your entire home.

Whether you’re installing a new system, servicing an existing one, or deciding it’s time for an upgrade, we have the furnace services in San Diego that will get you through the winter months.

Furnace Installation

An oversized furnace can short cycle, wasting energy and wearing out faster, while an undersized one will struggle to keep your home warm. We carefully size and perform your furnace installation to match your home’s specs.

Furnace Maintenance

A furnace tune-up once a year — ideally before the cooler months hit — is the best way to keep your system running safely and efficiently. Our furnace maintenance service includes cleaning burners, inspecting the heat exchanger, checking for gas leaks, and testing all safety controls.

Furnace Repair

Strange noises, weak airflow, and rooms that never seem to get warm are all signs you might need a furnace repair. If your system is blowing cold air or won’t turn on, our HVAC technicians respond quickly to get your heat back on.

Furnace Replacement

When your furnace is beyond repair or simply costs too much to run, a furnace replacement is often the best choice. We handle everything — from safely removing the old unit and disposing of it to expertly installing your new, energy-efficient furnace.

Indoor Air Quality Services in San Diego

San Diego’s air may feel fresh, but inside your home, dust, allergens, and pollutants can build up fast. Add in humidity or poor ventilation, and your air quality can take a hit.

We offer indoor air quality services in San Diego— from air purifiers to dehumidifiers — to clear the air. With expert installation, repairs, and maintenance, we’ll help you breathe easier.

Air Purifier Installation

For cleaner, healthier air throughout your home, an air purifier installation is a great choice. We install whole-home air purifiers that trap dust, allergens, and airborne contaminants.

Air Purifier Repair

If your air purifier isn’t doing its job, it may be time for an air purifier repair. From clogged filters to electrical issues, we troubleshoot and fix problems fast to restore clean air circulation.

CO Detector Installation

A CO detector installation ensures your home is protected from dangerous carbon monoxide exposure. We install reliable detectors in key areas to provide 24/7 monitoring.

Dehumidifier Installation

When humidity makes your home feel damp and musty, a dehumidifier installation can restore balance. We’ll select and install the ideal system for your space.

Dehumidifier Repair

If your system isn’t keeping moisture under control, a dehumidifier repair is needed. We solve issues like refrigerant leaks, faulty sensors, and drainage problems.

Duct Sealing

Leaky ducts mean poor air quality, wasted energy, and higher bills. Our duct sealing service finds and fixes leaks to keep clean, conditioned air flowing where it should.

Media Air Cleaner Installation

For homes with allergy concerns, a media air cleaner installation offers better filtration. We install media cleaners that trap even the smallest particles.

Thermostat Installation

The right thermostat installation can improve your comfort and reduce energy use. We install smart or programmable thermostats that save you money.

Thermostat Repair

When your home feels too hot or too cold, a faulty thermostat may be to blame. Call for a thermostat repair to resolve temperature and connectivity issues.

Thermostat Replacement

Outdated or unreliable thermostats can cost you in comfort and energy bills. We’ll recommend and install a model that provides better control and efficiency.

UV Air Cleaner Installation

A UV air cleaner installation adds a powerful layer of protection against airborne germs and allergens. We install UV air cleaners inside your ducts to neutralize bacteria, viruses, and mold.

UV Light Installation

Prevent mold and bacteria growth in your HVAC system with a UV light installation. We place UV lights near your coils to sterilize the air as it passes through to keep your system cleaner.

Solar Services in San Diego

With San Diego’s endless sunshine, why not make it work for you? At Guthrie & Sons, we provide expert solar panel installation, battery backup systems, and EV charger solutions designed to reduce your energy bills and your reliance on the grid.

By investing in solar, you’ll enjoy clean, renewable energy while protecting yourself from rising utility costs. Looking ahead? Solar is a smart, long-term investment — and we’ll be with you every step of the way.

Heat Pump Water Heater Services in San Diego

At Guthrie & Sons, we bring energy-saving comfort to your home with heat pump water heater installation services in San Diego. Unlike traditional water heaters, these systems use ambient air to generate heat, significantly lowering energy use and reducing your carbon footprint.

The result? Reliable hot water, lower utility bills, and a more eco-friendly home — all backed by our knowledgeable team who’s here to ensure everything runs smoothly.

Current Offers

Why pay more when you don’t have to? Check out our current specials and get the service you need at a price you’ll love.

PROMOTIONS

CURRENT OFFERS

Frequently Asked Questions

Do you offer free estimates on your services?

Yes! We provide free estimates on replacements for heating, air conditioning, and solar systems. Our team will assess your needs, explain your options, and offer clear pricing — no pressure, no gimmicks. You’ll know exactly what to expect before making a decision.

Absolutely. Our technicians are background-checked and committed to your safety and satisfaction. We only hire qualified, experienced professionals who meet our high standards. With Guthrie & Sons, you’re in trusted hands.

We understand that comfort can’t wait. In most cases, we offer same-day or next-day service, depending on availability. Just give us a call, and we’ll find a time that works for you.

Yes, we handle all necessary permits for your HVAC or solar installation. From navigating local regulations to submitting paperwork, we make sure everything is done by the book. You won’t have to worry about a thing.

OUR REVIEWS

Customer Reviews

Our customers say it best. From installations to repairs, see why so many San Diego homeowners choose us. Read their reviews and see the difference our team can make.

Darius Degher
21:45 22 Apr 25
Carson and Michael were brilliant. The heat pump installation went smoothly, and they are really pleasant and trustworthy fellows. The day after it was installed, I had a plumber at my house. He looked at their work and was impressed. He said it was much cleaner than the way HVAC people usually do it.
Lito Ricasata
19:03 08 Apr 25
First time prospective client of Guthrie and Sons. Very responsive staff in providing updates on my calls. Mario F. came over to check out my existing cooling and heating system and is very thorough and professional in providing necessary information related to repair/upgrades. Pending his quote, my experience with Guthrie and Sons is top notch and most highly recommended.
Michael Myers
00:19 25 Mar 25
My experience with Guthrie & Sons has been excellent, and I am pleased to write a very favorable review about it. They replaced three air conditioners and three propane furnaces with new equipment that utilizes heat pump technology. I had met with other companies and I was close to coming to a conclusion, when a friend recommended Guthrie & Sons. He told me that they are hyper focused on customer service from beginning to end.Their customer service started with the on line completion of a basic information form. Shortly after submitting that form, I heard from Zach who scheduled an appointment at my home.I had already met with three other HVAC contractors, and for that reason, I had some basic information about the systems available and how heat pumps work and whether propane furnaces should also be installed. I signed a contract on a Friday. By Wednesday of the next week they had completed the installation. Wow.The installation of one of the furnaces in the attic caused minor damage to the drywall. THEY BROUGHT IT TO MY ATTENTION and told me a drywall contractor would be in touch regarding its repair. Two days later it was repaired.Since installation, the equipment (heat pumps from Bosch) has been working great and I am optimistic about the future. Meanwhile, their pricing, warranty and terms are far superior to their competitors.Since this is an unusually long review and so favorable, let me add this: This is my honest, uncompensated opinion. I have no relationship with anyone at Guthrie & Sons other than the contract we executed.
Tom H
15:21 20 Mar 25
We recently had Guthrie and Sons install a Mini-Split system in our home. The entire process was handled professionally with no issues occurring at any time. The estimator (Vlad) went through options with us but let us evaluate the best solution for us with zero pressure. The installation team (Matthew and Aaron) showed up on time, reviewed the scope of the job, made sure they understood what we wanted, and then proceeded to complete the installation exactly as discussed. They asked for my input as needed so there were no surprises when the job was completed.They respected my property and made sure everything was left at least as clean was when they arrived. The job was completed on time and as promised and they reviewed the details of the system and its use clearly. I would definitely have Guthrie and Sons do other electrical/HVAC work should the need arise.
Mike Macias
19:43 19 Mar 25
I have been in the construction industry in San Diego for over 50 years. I owned my own contracting company for over 40 years. I have seen all levels of customer service in my years. The level of customer service from Guthrie and Son’s is among the best I’ve ever seen and received. Every time I hear anyone asking for a referral for HVAC work I immediately give them your number. When I recommend a company I in essence am putting my name and reputation on the line. I refer them with 100% confidence in the service they will receive. Thank you very much for your legendary service.
Scott Sypkens
23:32 11 Mar 25
We first hired Guthrie and Sons to replace a furnace after comparing proposals from several heating and air companies. They’ve since been back for annual check ups, and today Kareen came to diagnose and resolve an issue with our mini-splits. My experience each time, including today, is that they hire friendly, knowledgeable people who do good work. They’ve never tried to upsell or do anything unnecessary, which is the way it should be. I’d recommend them to anyone who asks.
Marilyn Rivas
20:07 09 Mar 25
They always come out quickly. They are so polite and careful.
Steven Wheeler
19:28 07 Mar 25
Good technician did everything right yet our heater still not workingJonathan gave us the likeliest problems so we’ll have to get it fixed
Dmitriy
04:01 07 Mar 25
My AC was not working for seven months. Three other companies tried to fix it with no success. Don’t make the same mistake I did—go straight to Guthrie & Sons! They are absolutely worth every penny.
Cecilia Benevich
22:17 05 Mar 25
Rick
21:38 05 Mar 25
Experienced technician gave me the particulars of a replacement HVAC system
Daylan Dauchot
21:28 05 Mar 25
Courteous, in-time, helpful, honest. Would recommend.
Xinxin Wang
22:05 04 Mar 25
Tom Barden
18:26 04 Mar 25
Adair Cooke
19:02 03 Mar 25
Jonathon is a great technician. He is very willing to answer any questions and explains things very well. He is very transparent with letting us know cost, finance options, different furnace models and anything else we want to know. I would highly recommend him to anyone looking for furnace repair or replacement.
Bratso Krsic
00:29 28 Feb 25
Guthrie and Sons took on the challenging project of installing an HVAC system at St. George's Serbian Orthodox Church of San Diego, CA. They were the only company among the six we consulted that saw the project through to the end. The members of our congregation are not just happy, but thoroughly satisfied with the heating and air conditioning. The system, split units/floor units with condensers outside, was installed with minimal intrusion onto the church's artwork. Despite the project taking longer than expected due to permit delays, the results were well worth the wait. We highly recommend Guthrie and Sons Heating and Air.
Jennie Cornsweet
00:10 28 Feb 25
Have been using Guthrie & Sons for several years now and purchase my new HVAC system with them. They do our yearly maintenance and have always been professional, efficient and reliable. Jonathan was the tech that came today and I want to thank him for his great work and great attitude.
Cory Mapston
23:13 27 Feb 25
Always excellent service- customer service oriented - solved our problems promptly
Boris Fratkin
20:56 27 Feb 25
Got recommended this company by my boss who had a whole mini split system installed in his house. Was able to schedule a service appt same week. On morning of service Daniel W. shows up, listens to all of my concerns, and gets right to work. Daniel was able to investigate the problem, took his time making sure he's eliminated all other possible issues before coming up with a recommendation to my original proposal. Fixes up the issue then checks to see if it is working properly. Not only that, he stays with me few more minutes and addresses all the questions I had for him regarding the system, as a whole. Absolutely amazing.I'll be calling back to schedule maintenance services with them going forward. They won me as a customer.
Ehud Kedar
23:05 26 Feb 25
Zach was very knowledgeable and flexible. He did not push us to purchase a new furnace and instead came up with a plant to continue monitor the furnace and air condition. The inspection was good and he replaced a battery. Looking forward to work with him in the future

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Schedule Service With Guthrie & Sons Today

At Guthrie & Sons Heating, Air & Solar, we don’t just show up — we show that we care. Whether your home needs a cooling upgrade, a reliable heater, or energy-saving solar solutions, we’re dedicated to providing service that puts you first.

With free estimates, upfront pricing, and flexible financing, we make repairs and upgrades more affordable. And when we’re done, we’ll leave your space just as we found it — only now it’s more comfortable and energy efficient, which means it feels great and is saving you more money. Now that’s a win-win!

Use our website or call (619) 269-3013 to schedule heating, air conditioning, or solar services in San Diego, California, with Guthrie & Sons Heating, Air & Solar.

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