Solar and HVAC Services in Rancho Bernardo, 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 Rancho Bernardo. We’ve helped homeowners all over Rancho Bernardo — from the scenic trails of Lake Hodges to the bustling shops at Bernardo Winery.

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! Our team has worked in nearly every block of Rancho Bernardo, including homes near Rancho Bernardo Community Park and Oaks North Golf Course.

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

Rancho Bernardo's sunshine keeps things pleasant most of the year. But when summer spikes or winter nights roll in, your comfort system needs to perform. At Guthrie & Sons, we deliver dependable HVAC, solar, and indoor air quality solutions built for how you live. Whether you're in a classic home near Westwood Club or a newer build in 4S Ranch, we help keep things running smoothly.

From seamless AC installations to heating system tune-ups, we handle it all. Thinking about better air or lower energy bills? We offer indoor air quality upgrades and solar services too. We've worked everywhere from Rancho Bernardo Inn to Webb Park, and we’re ready to help you next.

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 Rancho Bernardo 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 Rancho Bernardo, 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 Rancho Bernardo

Trust Guthrie & Sons for top-notch air conditioning services in Rancho Bernardo, ensuring your comfort on hot days. Discover the benefits of upgrading to an energy-efficient system with us, including valuable tax incentives and rebates, and let us guide you through the process of finding and applying for these savings. We know the layout of Rancho Bernardo like the back of our hand — especially neighborhoods like The Trails and High Country West.

Air Conditioning Installation

Guthrie & Sons is your expert for air conditioning installation, specializing in new builds and homes without existing AC. We design custom systems to fit your space, maximize energy efficiency, and keep your home cool. We handle everything from ductwork to system selection.

Air Conditioning Maintenance

Ensure the longevity and efficiency of your air conditioner with our expert air conditioning maintenance services in Rancho Bernardo. Our skilled technicians provide tune-ups to prevent costly breakdowns and enhance your system's performance.

Air Conditioning Repair

If your AC is making odd noises, struggling to maintain temperature, or won't turn on, you need professional air conditioning repair. At Guthrie & Sons, we use advanced tools and years of experience to diagnose and fix issues quickly.

Air Conditioning Replacement

Considering an air conditioning replacement? If your unit is over a decade old, needs repairs often, or isn't efficient, a replacement could be beneficial. Our team will guide you in selecting an energy-efficient system that cools your home better and reduces energy costs.

Mini Split Services in Rancho Bernardo

Experience the flexibility and energy efficiency of a ductless mini split system in your Rancho Bernardo home. This system provides zoned temperature control, allowing you to adjust the comfort level in individual rooms, thus saving energy by only heating or cooling where necessary.

Whether you're contemplating a new installation or require maintenance for your current system, Guthrie & Sons is ready to provide the timely and reliable ductless mini split services in Rancho Bernardo that you need, exactly when you need them.

Mini Split Installation

Ductless mini splits are ideal for regulating the temperature in spaces such as renovated garages, sunrooms, or guest rooms, eliminating the need for extensive ductwork installation. We tailor and set up ductless mini split systems to cater to your specific needs.

Mini Split Maintenance

Your system can wear out due to salty air, dust, and regular use, especially in our coastal environment. 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, our ductless mini split repair technicians will diagnose and repair the issue. 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

When your compact air conditioning unit can't keep up, needs regular repairs, or hikes your electricity costs, replacing it with a ductless mini split could be the solution. We'll evaluate your current unit and suggest a new, energy-efficient model suitable for Rancho Bernardo's climate.

Heat Pump Services in Rancho Bernardo

From Carmel Mountain Ranch to Sabre Springs, many homeowners are making the switch to high-performance heat pumps. These systems are an ideal solution for Rancho Bernardo's mild climate — offering year-round comfort from a single system. At Guthrie & Sons, we handle everything from new installations to fast repairs and seasonal tune-ups. Whether you're upgrading an older unit or outfitting a new space, we’ll make sure your system works efficiently.

Heat Pump Installation

Opting for a heat pump installation is a prudent choice for Rancho Bernardo homeowners seeking efficient heating and cooling without separate systems. We'll evaluate your home's layout, insulation, and energy needs to recommend the most suitable unit.

Heat Pump Maintenance

Even in a moderate climate, heat pumps operate continuously, requiring routine maintenance. We suggest biannual checks on your heat pump to assess refrigerant levels, clean coils, and verify all components are functioning correctly.

Heat Pump Repair

Over time, especially with regular use, heat pumps can experience issues. You may observe weak airflow, inconsistent cooling, or odd noises. We diagnose these problems promptly, identifying causes like refrigerant leaks, electrical malfunctions, or sensor issues.

Heat Pump Replacement

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

HVAC Services in Rancho Bernardo

Whether your home utilizes a single unit or a comprehensive HVAC system, we ensure smooth operation with our top-notch HVAC services in Rancho Bernardo. From air conditioners and furnaces to heat pumps, we've got you covered. Our local HVAC experts know exactly how to handle any issue you have.

HVAC Installation

Setting up a new HVAC system isn't just about selecting a device - it's about discovering the right fit for your home and lifestyle. We meticulously assess your area, taking into account dimensions and air circulation requirements, to suggest the best heating and cooling option for enduring coziness.

HVAC Maintenance

Ignoring HVAC upkeep is similar to neglecting oil changes for your vehicle — it's just a matter of time before problems crop up. We adhere to both the manufacturer's instructions and our comprehensive checklist to spot minor issues before they escalate, ensuring your system remains robust and efficient.

HVAC Repair

Odd sounds, poor air circulation, or spaces that don't heat or cool uniformly? These are signs that your HVAC system needs attention. Delaying can escalate a small repair into a big problem. We act promptly, determine the issue, and perform professional HVAC maintenance.

HVAC Replacement

Are you tired of frequent repairs and escalating energy costs? Perhaps it's time for an HVAC replacement. Our team works swiftly to install your new system with minimal disturbance. Once it's operational, we'll guide you on its usage and provide maintenance tips.

Heating Services

Even in Rancho Bernardo, crisp mornings and cool evenings can sneak up on you. Whether you rely on a furnace, heat pump, or mini split, our expert heating services ensure your home stays warm and comfortable when it matters most. From early school runs near Turtleback Elementary to winding down after a walk at Rancho Bernardo Community Park, a reliable heating system makes all the difference.

Heating Installation

Seeking to heat your home? Our team is ready to help you choose the perfect heating system. Whether it's a furnace, heat pump, or mini-split, we'll guide you through your options and install a durable system.

Heating Maintenance

Your heating system needs more than a fresh air filter to stay at peak performance. When you contact us for heater service, we'll clean, inspect, and adjust every part. This means fewer malfunctions, lower energy costs, and increased comfort.

Heating Repair

When your heat cuts out, comfort isn’t the only thing at risk — your whole day can get thrown off. Our team shows up fast to pinpoint the issue, walk you through the fix, and get the warmth flowing again. No guesswork. No pressure. Just honest repairs done right the first time.

Heating Replacement

If your heater is nearing its end, replacing it doesn't need to be difficult. We'll guide you through choosing a system that's energy-efficient, reliable, and tailored to your home. After installation, we'll test it, make adjustments, and show you how to maintain it.

Furnace Services in Rancho Bernardo

Furnaces remain one of the most reliable ways to stay warm during Rancho Bernardo’s chilly mornings and breezy nights. Whether you're installing a new system, scheduling maintenance, or upgrading an outdated unit, our expert furnace services are here to keep your home cozy all winter long. We’ve worked in homes near Black Mountain Open Space Park and the Rancho Bernardo Historical Society — and we’re ready to help with yours, too.

Furnace Installation

A large furnace can short cycle, wasting energy and wearing out quickly, while a small one will struggle to keep your home warm. We precisely size and execute your furnace installation to match your home's specifications.

Furnace Maintenance

Getting your furnace serviced annually, preferably before the cold season starts, is the perfect way to ensure it operates safely and effectively. Our furnace upkeep program involves cleaning the burners, examining the heat exchanger, looking for any gas leaks, and checking all safety mechanisms.

Furnace Repair

Odd sounds, poor air circulation, and chilly rooms that just don't heat up could all point to the need for a furnace fix. If your unit is pumping out cold air or refuses to start, our HVAC experts are ready to act swiftly to restore your warmth.

Furnace Replacement

When your old furnace is irreparable or too expensive to operate, a furnace replacement is often the best option. Our team manages everything - from safely removing and disposing of the old furnace to expertly installing your new, energy-efficient unit.

Indoor Air Quality Services in Rancho Bernardo

Despite the fresh air in Rancho Bernardo, dust, allergens, and pollutants can rapidly accumulate in your home. Humidity and poor ventilation can further deteriorate your indoor air quality. Our indoor air quality services, from air purifiers to dehumidifiers, can help. With expert installation, repair, and maintenance, we strive to improve your home's air quality, making it easier for you to breathe.

Air Purifier Installation

Want 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 contaminants.

Air Purifier Repair

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

Dehumidifier Installation

If your home feels damp and smells musty due to high humidity, installing a dehumidifier can restore balance. We'll choose 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 water drainage.

Duct Sealing

Ducts with leaks can lead to bad air quality, squandered energy, and increased costs. Our specialized duct sealing service identifies and repairs these leaks, ensuring fresh, temperature-controlled air circulates as it's supposed to.

Media Air Cleaner Installation

For homes with allergy worries, installing a media air cleaner provides enhanced filtration. We install media cleaners that trap even the smallest particles.

UV Air Cleaner Installation

Installing a UV air cleaner offers robust protection against airborne germs and allergens. We fit UV air 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. This helps to clean the air that flows through, keeping your system spotless.

Home Safety & Comfort Controls in Rancho Bernardo

In Rancho Bernardo, a dependable comfort system brings more than just temperature control — it brings confidence and ease. Faulty devices can disrupt your comfort quickly. Our Rancho Bernardo safety and control services are built to keep everything behind the scenes working perfectly — so your home feels just right.

CO Detector Installation

Setting up a CO detector makes sure your house is safe from harmful carbon monoxide. We put in dependable detectors in crucial spots for round-the-clock protection.

Thermostat Installation

Getting the correct thermostat setup can enhance your comfort while minimizing energy consumption. We set up either smart or programmable thermostats, helping you reduce your energy bills.

Thermostat Repair

If your house seems overly warm or excessively chilly, the problem might be with a malfunctioning thermostat. Reach out for a thermostat fix to tackle issues related to temperature and connection.

Thermostat Replacement

Old-fashioned or untrustworthy thermostats can lead to discomfort and higher energy costs. We're here to suggest and set up a version that offers improved management and effectiveness.

Solar Services in Rancho Bernardo

Make the endless sunshine of Rancho Bernardo work for you with Guthrie & Sons' expert solar services in Rancho Bernardo. Our solar panel installation, battery backup systems, and EV charger solutions are designed to reduce your energy bills and grid reliance. Invest in solar for clean, renewable energy and protection against rising utility costs. Solar is not just an investment for today, but a smart choice for the future - and we're committed to guiding you every step of the way. Wind, rain, or heat — we’ve helped keep homes protected across Rancho Bernardo, including near Highland Valley Road and Camino del Norte.

Heat Pump Water Heater Services in Rancho Bernardo

Experience the perfect blend of comfort and energy efficiency with Guthrie & Sons' heat pump water heater installation services in Rancho Bernardo. Unlike traditional heaters, our systems harness the power of ambient air to generate heat, significantly reducing energy consumption and your carbon footprint.

Enjoy the benefits of reliable hot water, decreased utility bills, and a more environmentally friendly home. All these are backed by our knowledgeable and dedicated team, who are always ready to ensure everything runs smoothly.

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.

Erin Guthrie

19:21 03 Sep 25

Daniel was quick and professional. Fixed our AC problem in an hour and the price was very transparent and beyond fair. Didn’t push the subscription maintenance service, simply said it would be a good idea due to the age of our unit. Highly recommend!

Tomankhamen

18:03 28 Aug 25

We had to replace a thermostat that had gone bad. In the old days, I could do it myself. Now, though, the programming of the thing requires technical knowledge that I don’t have. The Guthrie guy that did the job was courteous, professional, and as fast as anyone could be. This has been our experience with Guthrie & Sons for every repair, retrofitting, and equipment replacement that they’ve done for us over quite a number of years now.

Gabrielle Benjamin

18:15 25 Aug 25

Carson Snyder and co-worker (Pablo?) did a great job on the installation of the mini-split cassette. They're hard working, they clearly knew what they were doing, polite, cleaned up afterwards, true professionals. I'd gladly recommend these two gentlemen. However, the Company was not good at keeping me informed although I mentioned to the salesman up front that I was information driven. They were short on details and communicated seldom. Anthony did tell me about the government program available that reduced my cost. I wouldn't have known about it if he didn't mention it. The City did approve their work and signed off on the permit which is an indication of the job done right. I think the Company can improve their customer service

robert johnson

00:53 11 Aug 25

Very pleased with the service we received from Guthrie & Sons! Our AC system needed to be replaced after a huge leak. The tech that came out for diagnosis, Mario, took the time to explain the issue to us, as well as our options for repair. They came out on a Saturday to diagnose and it was fixed the following Tuesday. Matthew was the worker that completed the repair and he did an excellent job. Pricing was reasonable. Much more reasonable than the first company we had come out to take a look. We upgraded our system and our SDG&E bill has already gone down. Highly recommend!

K N

15:52 01 Aug 25

Very knowledgeable and professional. Quoted product was high quality and fair pricing. I highly recommend We ended up not going with them only due to the fact we were also getting Solar and ended up going with one company for our project but I would definitely do business with this company in the future if we need it!

LeRoy Lafferty

17:25 31 Jul 25

We had Guthrie and Sons replace our 50 year old house heater with a heat pump. We are very satisfied with the installation performed by Matthew and Andriy. We were impressed with the detail of their work. They paid particular attention to the required sealing and insulating of the system. Even the HERS testing inspector was impressed with their work. We were also impressed by their professionalism and honesty. They gave us an unexpected partial refund off our signed contract.

Nannette Moyer

17:41 29 Jul 25

We have been using Guthrie & Sons for 3 years and I really can’t say enough good things about them. Our technician Mario was incredibly helpful with our most recent AC issue. He spotted the problem quickly and was very knowledgeable when explaining what was happening. I appreciate their honest and fair pricing and would recommend to family and friends. Glad to have an honest company especially with all the price gauging company’s out these days.

Meghan Venanzi

23:31 22 Jul 25

We were incredibly impressed with the prompt and professional service! We called on a Saturday morning, and within just a few hours, a technician was at our home. With the recent heat, getting our AC back up and running was a top priority—and they delivered! Mario clearly explained our options and provided a hassle-free solution that was both quick and effective. The repair was completed shortly after we gave the go-ahead. We’ll absolutely be using them again for any future HVAC needs. Highly recommend this company for their affordability, efficiency, and friendly service—we’re already telling our family and friends! Thanks again Guthrie & Sons!

Laurie Edwards

22:10 16 Jul 25

We were very happy from start to finish. Vlad did a great job in helping us decide what would be best for our house and our needs and the installation crew were the very best. Thank you Guthrie and Sons for a job well done.

Patrice Makovic

17:45 09 Jul 25

Last summer, I used Guthrie and Sons to replace my heating system with a new one and added an air conditioning unit. We also added two different zones in the house to be able to turn the system on independently from one zone to another. From the first contact to the six month maintenance visits, everything has gone smoothly. There were a couple of hiccups, but the company is very responsive and I have never had an issue with them not promptly responding and taking action to figure out and solve any problem. I highly recommend this company.

Carrie Reese

17:06 08 Jul 25

Guthrie & Son's did an amazing job on our new AC units. From sales through install they were all knowledgeable and helpful. They were very quick to get us all setup and when our home posed some unexpected issues they were able to pivot quickly and resolve them. I'd highly recommend them!

Kenneth Adelson

16:04 07 Jul 25

Had use Guthrie in the past for HVAC service, this time had them install a solar attic fan and additional vent. The service, as it had been the first time, was professional, polite, and on schedule. Pricing was fair (and consider that they offered a repeat customer discount without having to be asked). Would be happy to use them again when the need arises.
I offer 4 stars because I'm not a grade inflation sort. Three is sufficient, four is better than average. Five is reserved for knock my socks off amazing in ways I didn't expect - doesn't happen very often.

Patrick Smith

21:42 27 Jun 25

We had central heat and air put in two a year and a half ago. We've need to make a few adjustments to airflow to rooms since then. Each time, they are onsite withing 1-2 days and have resolved the issue each time. Their team is professional and incredibly friendly and knowledgeable. Very happy we went to Guthrie & Sons.

Bennie Beans

15:41 12 Jun 25

Mario was knowledgeable and courteous. He made sure our system would be sized right and that our existing ductwork was able to support the new system. The install team were prompt and efficient. They installed drop cloths and cleaned up inside and out after the job. So far I’ve been very happy with the work Guthrie and Sons have done for us.

Chris Toogood

21:52 06 Jun 25

Great local family business. And you actually get a live person when you call... And the technician was great and they come out quickly. No up selling too. He gave me two different price options on fixing my problem... band aid cheaper way or replacement. Great service.

Nick Schoch

17:58 27 May 25

Jonathan recently inspected the HVAC systems at both my front and guest houses, and I couldn’t be more impressed with his service. He was thorough in his assessment, clearly identifying areas of concern and explaining the recommended repairs in a way that was easy to understand. What stood out most was his honesty and patience—he took the time to answer all my questions without rushing, and I genuinely felt he had my best interest in mind. If you're looking for someone who is knowledgeable, professional, and respectful of your time and property, I highly recommend asking for Jonathan.

Neil Domingo

17:24 15 May 25

If you’re dealing with an AC issue, Mario is definitely one of the best! He quickly diagnosed the problem, worked efficiently, and provided a thorough solution. His expertise and professionalism were clear throughout the entire process. Highly recommend Mario for anyone looking to resolve their AC issues with a reliable and skilled technician.

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!

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