Solar and HVAC Services in Del Mar, CA

Reliable Heating, Cooling, and Comfort Solutions From a Team You Can Count On

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 Del Mar.

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!

Del Mar’s Choice for Cooling, Heating, Indoor Air Quality, and Solar Services

Most days, Del Mar's sunshine brings comfort. But when summer heats up or the evenings turn chilly, Guthrie & Sons is here to keep your indoor environment just right with top-tier residential and commercial HVAC services in Del Mar, California.

From homes near Seagrove Park to businesses along Camino Del Mar, we install AC units, maintain heating systems, and provide reliable repair, maintenance, and replacements. Looking to breathe cleaner air or tap into solar energy? We’ve got that covered too — all in one place!

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 Del Mar 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 Del Mar, 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 Installation

We specialize in air conditioning installation for both new construction and older homes without AC. Our custom systems are designed for maximum comfort and efficiency. We handle everything from ductwork to unit selection.

Air Conditioning Maintenance

Protect your system from breakdowns with our detailed air conditioning maintenance in Del Mar. Our thorough tune-ups boost efficiency and help extend your AC’s life.

Air Conditioning Repair

Is your AC underperforming, making odd noises, or not turning on at all? Our experienced technicians deliver fast, accurate air conditioning repair in Del Mar to get you back to comfort quickly.

Air Conditioning Replacement

If your AC is over 10 years old, needs constant repairs, or isn’t cooling efficiently, it may be time for an air conditioning replacement. We'll help you choose a new energy-saving system tailored to your home.

Mini Split Installation

Ideal for sunrooms, guest suites, or additions, our mini split installations provide comfort without major renovations. We’ll customize and install a system that meets your space’s unique requirements.

Mini Split Maintenance

Salt air and daily use can wear down your system. Our maintenance service includes cleaning filters, checking refrigerant levels, and inspecting electronics to keep your mini split running strong.

Mini Split Repair

If your mini split is acting up — cycling unevenly or displaying errors — we’ll find the problem fast. From refrigerant issues to sensor failures, we deliver reliable ductless mini split repair in Del Mar.

Mini Split Replacement

Struggling with an old or inefficient mini split? We’ll inspect your current unit and recommend a high-efficiency replacement that’s ideal for Del Mar’s climate.

Heat Pump Installation

A heat pump is a smart, efficient choice for Del Mar homes. We evaluate your home’s layout and energy usage to recommend the right system for consistent performance.

Heat Pump Maintenance

Even in our mild climate, heat pumps work hard year-round. Our routine maintenance keeps your system clean, efficient, and reliable.

Heat Pump Repair

From strange noises to uneven temperatures, we troubleshoot heat pump problems fast. Count on us to fix leaks, wiring issues, or malfunctioning components.

Heat Pump Replacement

Frequent breakdowns or high bills may mean it’s time for a new system. We’ll install a modern, energy-efficient heat pump that saves you money while keeping your home comfortable.

HVAC Installation

We don’t just install systems — we design HVAC solutions based on your home’s unique needs. Let us help you choose a system that delivers long-term comfort and efficiency.

HVAC Maintenance

Like oil changes for your car, HVAC maintenance is essential. We follow detailed checklists to catch problems early and ensure your system performs at its best.

HVAC Repair

Strange sounds, inconsistent airflow, or temperature issues? Our expert HVAC repair services resolve problems fast so you can get back to comfort.

HVAC Replacement

If your system is old and inefficient, our HVAC replacement service offers a hassle-free upgrade. We’ll handle everything and ensure you know how to use and care for your new unit.

Heating Installation

Need a new heating solution? From selection to installation, we’ll help you choose the best system — and make sure it runs efficiently from day one.

Heating Maintenance

Our thorough heating maintenance includes cleaning and inspecting every component, helping prevent breakdowns and lower energy costs.

Heating Repair

If your heater is noisy or blowing cold air, we’re ready to help. Our team provides clear explanations and fast heating repair — no gimmicks, just honest solutions.

Heating Replacement

Ready for an upgrade? We’ll walk you through heating replacement options and install a system that fits your home’s needs and energy goals.

Furnace Installation

A properly sized furnace matters. We measure and install units tailored to your home’s specific heating needs for consistent comfort.

Furnace Maintenance

Annual service keeps your furnace running safely and efficiently. We clean burners, check for leaks, and test safety controls before colder months hit.

Furnace Repair

Weak airflow? No heat? Odd noises? We provide responsive furnace repair in Del Mar to quickly restore warmth to your home.

Furnace Replacement

If your furnace is inefficient or constantly breaking down, we offer expert furnace replacement with energy-saving models and professional installation.

Air Purifier Installation

Improve your indoor air with a whole-home purifier that removes dust, pollen, and airborne particles for a healthier environment.

Air Purifier Repair

A malfunctioning purifier can’t do its job. We quickly identify and fix filter or electrical issues to get clean air flowing again.

Dehumidifier Installation

If your home feels muggy or musty, a dehumidifier can help. We install systems that reduce moisture and enhance comfort.

Dehumidifier Repair

Leaks, faulty sensors, or poor drainage? Our dehumidifier repair team handles it all to keep your system running right.

Duct Sealing

Leaky ducts waste energy and hurt air quality. Our duct sealing service finds and fixes leaks to restore clean, efficient airflow.

Media Air Cleaner Installation

Capture more allergens with a media air cleaner. We install systems designed to trap even the smallest particles for better indoor health.

UV Air Cleaner Installation

Target bacteria, viruses, and allergens with a UV air cleaner. We install these systems inside your ducts for powerful protection.

UV Light Installation

Combat mold and bacteria buildup in your HVAC system with UV lights installed near your coils. This keeps air clean and your system healthier.

Home Safety & Comfort Controls

Del Mar homes need comfort systems that do more than adjust the thermostat — they should protect your space and simplify your day. When important devices go unchecked, safety and efficiency can take a hit. We offer safety and control services in Del Mar to help your home function better behind the scenes — for comfort you can count on.

CO Detector Installation

Protect your household with CO detectors installed in key locations. We use reliable models for round-the-clock carbon monoxide monitoring.

Thermostat Installation

Take control of your comfort with a smart or programmable thermostat. We install easy-to-use models that help lower energy bills.

Thermostat Repair

Temperature issues? We troubleshoot and repair faulty thermostats to restore comfort and control.

Thermostat Replacement

Upgrade outdated thermostats for better efficiency. We’ll recommend the right model and handle the replacement seamlessly.

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