Solar and HVAC Services in Coronado, CA

Power a More Comfortable, Energy-Efficient Home With Trusted Local Experts

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 Coronado.

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!

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

Coronado’s sunshine keeps things pleasant most days, but when temperatures spike or the marine layer rolls in, your home needs dependable systems. At Guthrie & Sons, we deliver HVAC, indoor air quality, and solar solutions tailored to how Coronado residents live. Whether you’re near the Hotel del Coronado or tucked away in a quiet spot near Tidelands Park, we’re here to help.

From upgrading older AC units to installing new heat pumps and maintaining mini splits, we do it all — installs, repairs, and replacements. Ready to breathe cleaner air or tap into solar savings? Our in-house team handles everything 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

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 Coronado 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 Coronado, 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 Coronado

Summers in Coronado call for serious cooling — and Guthrie & Sons delivers. Whether you need a quick AC fix or want to upgrade to a high-efficiency system, we’ll make the process easy. We’ve worked in homes from Orange Avenue to Spreckels Park and know what works best in the coastal climate.

Air Conditioning Installation

Guthrie & Sons is an expert in air conditioning installation, specializing in new builds and homes without AC. We design custom, energy-efficient systems for your space, ensuring a cool home. We handle everything, from ductwork to system selection, providing a seamless installation.

Air Conditioning Maintenance

Safeguard your air conditioning system from expensive malfunctions with our top-notch maintenance services in Coronado. Our skilled technicians conduct AC tune-ups, enhancing efficiency and prolonging your unit's lifespan.

Air Conditioning Repair

If your AC is underperforming, making strange sounds, or refusing to switch on, it's time to seek professional air conditioning repair in Coronado. At Guthrie & Sons, we leverage advanced tools and extensive experience to diagnose and resolve issues swiftly.

Air Conditioning Replacement

Considering an air conditioning replacement in Coronado? If your unit is more than a decade old, constantly needs repairs, or lacks efficiency, it might be time for an upgrade. Our team can guide you to the perfect energy-efficient system, promising improved cooling and reduced energy costs.

Mini Split Services in Coronado

Mini splits are a great solution for Coronado homes that need zoned comfort and energy efficiency. Whether you’re adding one to a guest suite or replacing an aging system, we’ll tailor your mini split setup to your space. We’ve installed systems throughout Coronado, including homes near the Ferry Landing and Centennial Park.

Mini Split Installation

Ductless mini splits are ideal for managing the temperature in spaces such as revamped garages, sunny rooms, or visitor suites, without the hefty task of setting up ductwork. We tailor and set up ductless mini split systems that cater to your specific needs.

Mini Split Maintenance

In a coastal climate like Coronado, salty air, dust, and daily use can wear down your system faster than you think. Our ductless mini split maintenance includes thorough filter cleaning, refrigerant level checks, and electrical component inspections.

Mini Split Repair

If your mini split isn't warming or cooling as it should, shows error messages, or operates inconsistently, a ductless mini split repair can solve the problem. We'll promptly spot problems such as leaks in the refrigerant, electrical glitches, or malfunctioning sensors and get your comfort back on track swiftly.

Mini Split Replacement

If your mini split is struggling, needs regular repairs, or increases your energy bills, a ductless mini split replacement could be ideal. We assess your current unit and suggest a new, energy-efficient model suitable for Coronado’s climate.

Heat Pump Services in Coronado

Looking to heat and cool your Coronado home with one smart solution? Heat pumps are ideal for our coastal climate — efficient, quiet, and reliable year-round. Guthrie & Sons offers everything from expert installation and biannual maintenance to fast repairs and full system upgrades. We’ve helped homeowners across Coronado improve comfort and cut energy bills with modern heat pump systems.

Heat Pump Installation

Installing a heat pump is a smart decision for Coronado homeowners seeking an efficient, hassle-free heating and cooling solution. We'll evaluate your home's design, insulation, and energy needs to recommend the best unit.

Heat Pump Maintenance

Despite the climate, heat pumps work hard, making regular maintenance crucial. We recommend biannual heat pump tune-ups to monitor refrigerant levels, clean coils, and ensure all parts are functioning correctly.

Heat Pump Repair

Over time, heat pumps may show signs of wear, especially with frequent use. You may observe weak airflow, uneven cooling, or odd sounds. We diagnose these problems quickly, identifying causes like refrigerant leaks, electrical issues, or sensor malfunctions.

Heat Pump Replacement

If your system frequently needs repairs or has stopped working, replacing it with a new heat pump can save time, money, and stress. Older units lose efficiency, leading to increased energy bills. We'll install a new, high-efficiency system that ensures comfort and reduces costs.

HVAC Installation

Installing a new HVAC system involves more than just selecting a model - it's about identifying the best fit for your home. We thoroughly assess your space, considering the size and ventilation needs, to recommend the perfect heating and cooling solution for lasting comfort.

HVAC Maintenance

Ignoring HVAC maintenance is akin to neglecting car oil changes — it's only time before trouble arises. We follow both manufacturer's guidelines and our comprehensive checklist to identify minor issues early, ensuring your system operates efficiently.

HVAC Repair

Unusual sounds, poor airflow, or spots in your home not heating or cooling correctly? These are indications your HVAC system requires help. Ignoring these for too long could escalate a small repair into a big issue. We react swiftly, diagnose the problem, and offer proficient HVAC repairs.

HVAC Replacement

Are you exhausted from constant repairs and increasing energy bills? It's probably time to think about an HVAC replacement. We promise a quick and seamless installation process that won't interrupt your day-to-day activities. Once it's fully operational, we'll instruct you on how to properly use it and also share useful maintenance advice to keep it running efficiently.

Heating Installation

Looking to heat up your space? Our team is ready to assist you in selecting the ideal heating solution for your home. Be it a furnace, heat pump, or a mini split, we'll guide you through the choices and set up a system designed for longevity.

Heating Maintenance

Heating systems need more than a filter change — regular professional upkeep ensures lasting performance and safety. When you reach out to us for heating upkeep, we'll thoroughly clean, examine, and adjust every component. This translates to less frequent malfunctions, reduced power bills, and significantly increased comfort.

Heating Repair

When your heating system starts puffing out chilly air or producing sounds straight from a scary film, it's a signal to reach out to us. We'll identify the problem, clarify the solution, and restore warmth to your house. No detours, no aggressive sales tactics — simply straightforward heater repairs that accomplish the task.

Heating Replacement

If your heater is nearing its end, replacing it doesn't need to be daunting. We'll guide you through the process, helping you choose a system that's efficient, dependable, and suited to your home. After installation, we'll test it, make adjustments, and teach you how to maintain it for optimal performance.

Furnace Installation

A too-large furnace can short cycle, wasting energy and wearing out quicker, while a too-small one may not adequately heat your home. We precisely size and install your furnace to fit your home’s specs.

Furnace Maintenance

Getting your furnace checked annually, preferably before the cold weather sets in, is the most effective method to ensure it operates safely and at peak performance. Our furnace upkeep services encompass cleaning the burners, scrutinizing the heat exchanger, looking for potential gas leaks, and verifying all safety mechanisms are functioning correctly.

Furnace Repair

Odd sounds, poor ventilation, and chilly rooms that just won't heat up could all indicate that your furnace requires fixing. If your system is pumping out cold air or simply refuses to start, our HVAC experts are always ready to respond promptly to restore your heating.

Furnace Replacement

When your heating system is beyond repair or too costly to operate, furnace replacement is often the best option. We manage everything — from safely removing the old furnace and disposing of it, to expertly installing your new, energy-efficient system.

Indoor Air Quality Services in Coronado

Clean coastal air doesn’t always make it indoors. Dust, allergens, and humidity can impact your comfort and health. Our air quality solutions — from purifiers to dehumidifiers — help you breathe easier in every room. We serve all of Coronado, including homes near Centennial Park and Coronado High School.

Air Purifier Installation

Want fresher, healthier air in your home? Installing an air purifier is an excellent choice. We install whole-house air purifiers that trap dust, allergens, and airborne pollutants.

Air Purifier Repair

When your air purifier isn't working as it should, it might be time to consider air purifier 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 high humidity, installing a dehumidifier can restore balance. We'll select and install the perfect system for your space.

Dehumidifier Repair

When your system isn't managing humidity effectively, it's time for a dehumidifier fix. We tackle problems such as leaks in the refrigerant, malfunctioning sensors, and issues with the drainage.

Duct Sealing

Ducts with leaks lead to bad air quality, unnecessary energy use, and increased costs. Our duct sealing solution identifies and repairs these leaks, ensuring fresh, temperature-controlled air circulates as it should.

Media Air Cleaner Installation

For homes with allergy worries, installing a media air cleaner can be beneficial. These devices, which we install, are excellent at trapping even the smallest particles.

UV Air Cleaner Installation

Installing a UV air cleaner provides a robust shield against airborne germs and allergens. We place these UV air cleaners inside your ducts, neutralizing bacteria, viruses, and mold, ensuring cleaner, safer air.

UV Light Installation

Prevent mold and bacteria in your HVAC system with a UV light installation. We install UV lights near your coils to sterilize the air as it passes, ensuring your system remains clean.

Home Safety & Comfort Controls in Coronado

Comfort goes beyond temperature — we help integrate smart safety and monitoring features into your home. We also install CO detectors, smart thermostats, and home monitoring solutions to enhance safety and convenience. Whether you're in the Cays or steps from the Ferry Landing, we make your home smarter and more secure.

CO Detector Installation

Setting up a CO detector keeps your home safe from the harmful effects of carbon monoxide. We put dependable detectors in crucial spots for round-the-clock monitoring.

Thermostat Installation

Proper thermostat installation can boost comfort and decrease energy use. We install smart or programmable thermostats to help you save money.

Thermostat Repair

If your house feels overly hot or extremely cold, a malfunctioning thermostat might be the issue. To address temperature and connectivity problems, consider calling for a thermostat repair.

Thermostat Replacement

Old or untrustworthy thermostats can lead to discomfort and high energy bills. We'll suggest and install a model for superior control and efficiency.

Solar Services in Coronado

Coronado’s sun is an opportunity — and Guthrie & Sons helps you make the most of it. We install solar panels, battery backups, and EV charging stations with precision and care. Solar helps cut your energy bills and reduce dependence on the grid — all while supporting long-term sustainability. Let’s make it easy.

Heat Pump Water Heater Services in Coronado

Our heat pump water heaters use ambient air to efficiently heat your water — cutting energy costs and reducing emissions. These systems are a perfect fit for Coronado homes looking to go green without sacrificing performance. Whether you live near the Yacht Club or inland, we’ll find the right fit.

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