Solar and HVAC Services in La Jolla, CA

Serving Every Corner of La Jolla With Comfort-Focused Solutions

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 La Jolla.

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!

La Jolla’s Choice for Cooling, Heating, Indoor Air Quality, and Solar Services

Most days, the radiant sunshine of La Jolla makes comfort a breeze. However, when the temperatures soar or the nights grow cold, Guthrie & Sons is on hand to ensure your home or business maintains the perfect ambiance with our comprehensive suite of residential and commercial HVAC services in La Jolla, California. Whether you live near the shores of La Jolla Cove or the bustling streets of Bird Rock, we've got you covered.

From installing AC in new constructions and vintage homes to ensuring your heater operates efficiently, we're your trusted team for installation, repair, upkeep, and replacement services. Seeking fresher air or contemplating a transition to solar? We provide indoor air quality solutions and solar services as well — all conveniently under one roof! We've worked in homes from the hills of Mount Soledad to the scenic views of Windansea Beach.

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

Service Backed by Integrity, Experience, and Family Values

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 La Jolla 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 in La Jolla, 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!

Maintenance Plans

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.

Learn More About Financing

Air Conditioning Services in La Jolla

Guthrie & Sons is your reliable air conditioning service provider in La Jolla, committed to maintaining your cool comfort. Did you know that by upgrading to an energy-efficient air conditioning system, you can qualify for valuable tax incentives and rebates?

We are here to guide you through the process of finding and applying for these savings. From homes near La Jolla Shores to those tucked away in the Hidden Valley neighborhood, we ensure you stay cool.

Air Conditioning Installation

Guthrie & Sons is a specialist in air conditioning installation for new builds and homes without AC. We design custom systems that maximize energy efficiency and cool your home. We handle everything from ductwork to system selection.

Air Conditioning Maintenance

Ensure your system's longevity and avoid expensive malfunctions with our air conditioning maintenance services. Our skilled technicians conduct AC tune-ups to enhance performance and prolong your air conditioner's life.

Air Conditioning Repair

If your AC is struggling, making strange sounds, or won't power up, it's time for professional air conditioning repair in La Jolla. At Guthrie & Sons, we leverage advanced tools and extensive experience to swiftly diagnose and fix your issues.

Air Conditioning Replacement

Is your air conditioning unit over a decade old, constantly needing repairs, or just inefficient? It might be time for an air conditioning replacement in La Jolla. Our team will guide you in choosing the most energy-efficient system for your home, promising improved cooling and reduced energy expenses.

Mini Split Services in La Jolla

Experience the flexibility and energy efficiency of a ductless mini split system for your La Jolla home. This system allows for zoned temperature control, enabling you to customize comfort in each room and conserve energy by only heating and cooling where necessary.

Whether you're thinking about a new installation or need maintenance for your current system, Guthrie & Sons is ready to provide timely and reliable ductless mini split services in La Jolla when you need us. We've installed systems in homes from the Village to the peaceful streets of La Jolla Heights.

Mini Split Installation

Ductless mini splits are ideal for regulating temperature in spaces such as remodeled garages, sunrooms, or guest rooms without the significant labor required to install ductwork. We tailor and set up ductless mini split systems that cater to your specific needs.

Mini Split Maintenance

Salt air, dust, and daily use can wear down your system, especially in our coastal climate. Our ductless mini split maintenance includes thorough filter cleaning, checking refrigerant levels, and inspecting electrical components.

Mini Split Repair

If your mini split isn't heating or cooling as it should, displays error signals, or functions unevenly, a ductless mini split repair can rectify it. We'll quickly identify problems like refrigerant leaks, electrical issues, or defective sensors and restore your comfort swiftly.

Mini Split Replacement

When your ductless mini split system can't keep pace, requires constant fixes, or hikes up your power costs, it might be time to consider a ductless mini split replacement. We'll examine the state of your existing system and suggest a new, energy-saving model tailored for the weather conditions in La Jolla.

Heat Pump Services in La Jolla

Seeking an energy-efficient method to manage your home's climate? Heat pumps, which provide both heating and cooling in one system, might be the solution.

At Guthrie & Sons, we deliver expert heat pump services in La Jolla, including installation, maintenance, repair, and replacement, ensuring your home remains comfortable throughout the year. From the sunny spots near La Jolla Shores to the cooler areas of Torrey Pines, we have the expertise you need.

Heat Pump Installation

Opting for a heat pump installation is a savvy decision for homeowners in La Jolla who want effective heating and cooling without dealing with multiple systems. We'll evaluate your house's design, insulation, and energy requirements to suggest the perfect unit.

Heat Pump Maintenance

Even in a moderate climate, heat pumps work tirelessly all year, necessitating regular maintenance. We advise biannual heat pump check-ups to monitor refrigerant levels, clean coils, and verify all parts are functioning correctly.

Heat Pump Repair

Over time, heat pumps may show signs of wear, especially with regular use. You might observe poor airflow, uneven cooling, or odd sounds. We diagnose these issues swiftly, pinpointing problems like refrigerant leaks, electrical issues, or sensor faults.

Heat Pump Replacement

If your system frequently breaks down or has stopped working, a new heat pump can save you hassle and expense. Older units lose efficiency, increasing energy bills. We'll install a new, high-efficiency system to keep you comfortable and reduce costs.

HVAC Services in La Jolla

Whether your home has a single unit or a full HVAC system, including air conditioners, furnaces, or heat pumps, we provide comprehensive HVAC services to ensure everything operates seamlessly. We've served homes from the bustling streets of Prospect Street to the serene areas of La Jolla Farms.

HVAC Installation

Setting up a fresh HVAC system isn't just about picking a unit — it's about discovering the best match for your home. We meticulously assess your area, considering its size and the need for airflow, to suggest the perfect heating and cooling solution that will provide enduring comfort.

HVAC Maintenance

Ignoring HVAC maintenance is like neglecting car oil changes — it's a matter of when, not if, problems will occur. We stick to manufacturer's guidelines and our detailed checklist to spot minor issues early, ensuring your system runs efficiently.

HVAC Repair

Odd sounds, poor ventilation, or uneven heating or cooling in your rooms? These are signs that your HVAC system needs attention. Delaying can transform a small repair into a significant malfunction. We act promptly, identify the problem, and carry out professional HVAC fixes.

HVAC Replacement

Are you exhausted from continuous repairs and increasing energy bills? It's time for an HVAC replacement. We ensure a quick and hassle-free installation of your new system. Once operational, we'll guide you on its usage and provide maintenance advice.

Heating Services

Experience the comfort of a warm home in La Jolla's cool climate with our expert heating services. No matter if you use a furnace, heat pump, or mini split, we have the necessary expertise to keep your heating system running efficiently.

We offer a range of services from installation and regular maintenance to quick repairs and complete replacements, all to ensure your home remains cozy and comfortable from on the coolest mornings in La Jolla Shores to cozy evenings in La Jolla Village.

Heating Installation

Want to heat your home? Our team is ready to help you pick the best heating system. Whether it's a furnace, heat pump, or mini split, we'll guide you through your options and install a long-lasting system.

Heating Maintenance

Your heating system needs more than a fresh air filter to stay at its best. When you contact us for heating maintenance, we'll clean, inspect, and fine-tune each part. This leads to fewer breakdowns, less energy costs, and much more comfort for you.

Heating Repair

When your heater begins blowing cold air or producing eerie sounds, it's time to contact us. We'll identify the issue, explain the solution, and make your home warm again. No dodging, no upselling — just honest and effective heating repairs.

Heating Replacement

When your heater is nearing its end, replacement doesn't need to be tough. We'll guide you through options to find a system that's efficient, reliable, and tailored for your home. After installation, we'll test it, fine-tune it, and teach you how to keep it running.

Furnace Services in La Jolla

Furnaces are the ideal solution for La Jolla homes during those cool mornings and breezy evenings, providing reliable, quick heat for your whole house.

Whether you're setting up a new system, maintaining an existing one, or considering an upgrade, our furnace services in La Jolla are designed to keep you warm throughout the winter. From the Muirlands to Torrey Preserve, we ensure warmth and comfort.

Furnace Installation

If your furnace is too large or small it may waste energy and wear out quicker. You need a furnace that will heat your home evenly when temperatures fall. We precisely measure and plan your furnace installation to fit your home's specs.

Furnace Maintenance

An annual furnace check-up, ideally before the onset of cold weather, is the best way to maintain your system's safety and efficiency. Our furnace maintenance service includes cleaning burners, inspecting the heat exchanger, detecting gas leaks, and testing all safety controls.

Furnace Repair

Odd sounds, poor air circulation, and chilly rooms that just don't heat up could all indicate that your furnace needs fixing. If your system is only spewing out cold air or refuses to switch on, our skilled HVAC team will swiftly respond to restore your heating.

Furnace Replacement

If your furnace is beyond fixing or just too expensive to operate, it's usually best to replace it. We take care of it all — from carefully taking out the old furnace and getting rid of it, to skillfully setting up your new, energy-saving furnace.

Indoor Air Quality Services in La Jolla

Experience the freshness of La Jolla's air inside your home with our comprehensive indoor air quality services. We effectively combat dust, allergens, and pollutants that can accumulate quickly in your home. Additionally, we tackle issues related to humidity or poor ventilation that can adversely affect your air quality.

With our expert installation, repair, and maintenance services, you can rest assured that we'll help you breathe easier.

Air Purifier Installation

For fresher, healthier air in your home, installing an air purifier is an excellent choice. We install whole-home air purifiers that trap dust, allergens, and airborne particles.

Air Purifier Repair

When your air purifier isn't working as it should, it might be the right moment for a repair. Whether it's a blocked filter or an electrical glitch, we diagnose and resolve issues quickly to bring back fresh air flow.

Dehumidifier Installation

If your house feels damp and musty due to humidity, installing a dehumidifier can restore balance. We will select and install the best system for your space.

Dehumidifier Repair

When your setup isn't managing humidity properly, it's time to fix your dehumidifier. We tackle problems such as leaks in the coolant, malfunctioning sensors, and issues with water drainage.

Duct Sealing

Duct leaks can result in poor air quality, wasted energy, and increased bills. Our duct sealing service identifies and repairs these leaks, ensuring clean, conditioned air flows where necessary.

Media Air Cleaner Installation

If you're worried about allergies, a media air cleaner installation provides superior filtering. We install media cleaners that catch even the tiniest allergens.

UV Air Cleaner Installation

Installing a UV air cleaner provides a strong shield against airborne germs and allergens. We place these UV cleaners in your ducts to neutralize bacteria, viruses, and mold.

UV Light Installation

Stop the spread of mold and bacteria in your HVAC system by installing a UV light. We position UV lights close to your coils, which sanitizes the air flowing through, helping to maintain a cleaner system.

Home Safety & Comfort Controls

In La Jolla, even a small disruption in your home’s comfort system can affect how your whole day feels. That’s why proper controls and safety devices matter more than you think. From early morning routines to peaceful evenings in Bird Rock, we ensure your home runs smoothly.

Our La Jolla safety and control services are designed to make your home more efficient, safer, and easier to manage — without lifting a finger. In every corner of La Jolla, we have the expertise you need for ideal comfort.

CO Detector Installation

Installing a CO detector is a surefire way to shield your home from the harmful effects of carbon monoxide. We set up dependable detectors in strategic spots for round-the-clock surveillance.

Thermostat Installation

Proper thermostat installation can enhance comfort and reduce energy use. We install smart or programmable thermostats, helping you save money.

Thermostat Repair

If your house is feeling too warm or too chilly, the problem might be with your thermostat. Reach out for a thermostat fix to sort out issues with temperature and connection.

Thermostat Replacement

Old or unreliable thermostats may increase your comfort and energy costs. We'll suggest and install a model for better control and efficiency.

Solar Services in La Jolla

From the coastal homes near La Jolla Shores to the inland homes of La Jolla Village, there's plenty of sun in our city.

Make the most of La Jolla's abundant sunshine with Guthrie & Sons' expert solar services. We specialize in solar panel installation, battery backup systems, and EV charger solutions, all designed to minimize your energy bills. Invest in solar for a clean, renewable energy source and shield yourself from escalating utility costs.

Heat Pump Water Heater Services in La Jolla

Guthrie & Sons offers energy-efficient comfort to your home with our heat pump water heater installation services in La Jolla. Unlike traditional water heaters, our systems utilize ambient air to produce heat, drastically cutting down on energy consumption and reducing your carbon footprint.

The outcome? Reliable hot water, reduced utility bills, and a more environmentally friendly home. All of this is supported by our expert team who are dedicated to ensuring a smooth and seamless service. We've installed systems in homes from the lively streets of Prospect Street to the quiet corners of La Jolla Farms.

Frequently Asked Questions

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.

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.

Phil Lane

17:18 10 May 25

Guthrie and Sons has provided great service. There are many HVAC companies in San Diego to choose from. They provided a very reasonable estimate for replacing our two AC systems. Once we said yes installation happened within days. It was a quality install. They answer the phone quickly when I've had questions. Happy to refer them to others.

Dianne Haase

20:57 02 May 25

Great customer service, technicians always on time and friendly. I’ve had my new hybrid heat pump for a few years and Guthrie & Sons are very proactive making sure everything is running smoothly. Very happy in my decision to use them!

Andrea Kossoudji

01:11 30 Apr 25

Great service!! Jonathan was patient, kind, knowledgeable and extremely professional! I love Guthrie & Sons’ reminder system, notification of the technician enroute, the easy invoice system and immediate emailing of the findings, including detailed photographs of the work completed!! Highly recommend!

james beedon

20:47 23 Apr 25

Last summer my air conditioner couldn't cool the house in the hottest period of summer. The HVAC team I was working with came in and said the coils were leaking, the unit was 20 years old. I requested quotes from 5 different companies, and the variation of prices was huge. I went with Guthrie and Sons for these reasons:1. Local Company2. Family Owned3. Great presentation, no pressure4. Good products5. Competitive pricingJust installed yesterday, so jury is still out on the system, but installation was thorough and great communication so far!

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.Updated review: Kareen, Daniel and Michael worked on the AC replacement, relocation of furnace to the attic and replacement of ductwork. Very professional and knowledgeable team in my opinion. Completed the work in a timely and very satisfactory manner.

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.

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.

8248 Ronson Road
San Diego, CA 92111

(619) 269-3013