Solar and HVAC Services in Rancho Peñasquitos, 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 Peñasquitos.

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!

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

In Rancho Peñasquitos, hardworking homeowners deserve more than just a break from the heat — they deserve systems that deliver year-round comfort. At Guthrie & Sons, we provide expert HVAC, indoor air quality, and solar services that are tailored to how you live. Whether you're up near Black Mountain Ranch or just steps from Los Peñasquitos Canyon Preserve, we help homes and businesses stay comfortable and energy-efficient.

From adding AC to older homes to optimizing heating systems in newer builds, we handle it all: installation, maintenance, repair, and full replacements. Want to breathe easier indoors or lower your bills with solar? We offer complete indoor air quality and solar solutions under one roof. We've served neighborhoods from Hilltop Community Park to Canyonside 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 Peñasquitos 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 Peñasquitos, 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 Peñasquitos

Stay cool with trusted air conditioning services in Rancho Peñasquitos. Whether you need a quick repair or a full upgrade, Guthrie & Sons has the tools and expertise to get the job done right. Thinking about a more efficient system? We’ll help you take advantage of rebates and tax incentives while finding the perfect setup for your home. From homes near Rancho Peñasquitos Skate Park to the communities along Carmel Mountain Road, we know the area and what it takes to stay comfortable here.

Air Conditioning Installation

Guthrie & Sons specializes in air conditioning installation for new constructions and homes without existing AC. We create custom systems to fit your space, boost energy efficiency, and maintain your home's coolness. From ductwork to system selection, we manage it all.

Air Conditioning Maintenance

Secure your system and avoid expensive malfunctions with our air conditioning maintenance in Rancho Peñasquitos. Our skilled technicians conduct AC tune-ups to enhance performance and prolong the lifespan of your air conditioner.

Air Conditioning Repair

If your AC is struggling, making strange noises, or won't turn on, it's time for professional air conditioning repair in Rancho Peñasquitos. At Guthrie & Sons, we leverage advanced tools and years of experience for quick and efficient diagnoses.

Air Conditioning Replacement

Is your air conditioning unit over a decade old, inefficient, or constantly needing repairs? Consider an air conditioning replacement in Rancho Peñasquitos. Our team will guide you in choosing an energy-efficient system that not only cools your home better but also reduces your energy costs.

Mini Split Services in Rancho Peñasquitos

Looking for a flexible, energy-saving option to heat and cool your home? A ductless mini split might be the perfect fit. With zoned temperature control, you can customize comfort in individual rooms and cut down on energy waste. We handle ductless mini split installation, maintenance, and repair throughout Rancho Peñasquitos, including Park Village, Torrey Highlands, and everywhere in between.

Mini Split Installation

Ductless mini splits are ideal for adjusting the temperature in areas such as renovated garages, sunrooms, or guest rooms, 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

Your system can wear down over time due to dust, heat, and regular use. Our mini split maintenance includes deep filter cleaning, refrigerant checks, and electrical inspections. Our ductless mini split maintenance involves deep cleaning filters, checking refrigerant levels, and inspecting electrical components.

Mini Split Repair

If your mini split isn't working as it should, displaying error codes or struggling to maintain consistent comfort, a ductless mini split fix can solve the problem. We'll promptly spot problems like leaks in the refrigerant, electrical glitches, or broken sensors and get your comfort back in a jiffy.

Mini Split Replacement

If your mini split system fails to keep up, needs regular repairs, or increases your energy bills, a ductless mini split replacement could be ideal. We evaluate your current unit's condition and suggest a new, energy-efficient model suited for Rancho Peñasquitos’s climate.

Heat Pump Services in Rancho Peñasquitos

For a home that handles both heating and cooling efficiently, consider a heat pump system. These all-in-one units are ideal for Rancho Peñasquitos’ climate and can save you money year-round. We provide expert installation, regular maintenance, reliable repairs, and full replacements. Whether you're near Twin Trails Park or Adobe Bluffs Park, we’ve helped homeowners just like you make the switch to smarter, cleaner comfort.

Heat Pump Installation

Choosing to install a heat pump is a wise decision for homeowners in Rancho Peñasquitos who want effective heating and cooling without the need for different systems. We'll examine your house's design, insulation, and energy requirements to suggest the perfect unit.

Heat Pump Maintenance

Even in a temperate climate, heat pumps operate continuously, necessitating regular maintenance. We advise biannual service checks on your heat pump to monitor refrigerant levels, clean coils, and verify all components are functioning correctly.

Heat Pump Repair

Over time, with regular use, heat pumps may encounter problems. Signs could include reduced airflow, inconsistent cooling, or odd sounds. We diagnose swiftly, identifying issues like refrigerant leaks, electrical faults, or sensor problems.

Heat Pump Replacement

If your system constantly needs repairs or has completely broken down, a new heat pump replacement can help you avoid ongoing issues and unnecessary costs. Older units lose efficiency, leading to increased energy bills. We'll install a new, high-efficiency system that ensures your comfort and reduces your costs.

HVAC Services in Rancho Peñasquitos

No matter how your home is set up — with a single unit or a complete HVAC system — we keep it running at peak performance. Our HVAC services in Rancho Peñasquitos include installations, tune-ups, repairs, and replacements designed around your comfort. We've installed efficient systems near Ridgewood Park and Peñasquitos Creek Park and bring the same level of care to every home we enter.

HVAC Installation

Installing a new HVAC system isn't simply about selecting a model; it's about identifying the perfect one for your home. We meticulously assess your home, considering its size and ventilation requirements, to recommend the most suitable heating and cooling system for sustained comfort.

HVAC Maintenance

Neglecting HVAC maintenance is like ignoring car oil changes — it's only a matter of time before issues arise. We follow both manufacturer's guidelines and our checklist to catch minor issues early and keep your system efficient.

HVAC Repair

Odd sounds, poor ventilation, or inconsistent temperature in your rooms? These are signs that your HVAC system needs attention. Delaying can turn a small repair into a significant malfunction. We act promptly, diagnose the issue, and perform professional HVAC fixes. Don’t wait — let us help keep your HVAC system running strong.

HVAC Replacement

Are you exhausted from continuous repairs and increasing energy costs? Perhaps it's time for an HVAC replacement. Our team operates quickly to install your new system, causing minimal disruption. Once everything is installed and operational, we'll instruct you on its use and provide some useful maintenance suggestions.

Heating Services

You work hard to keep your home running — your heating system should do the same. At Guthrie & Sons, we offer expert heating services in Rancho Peñasquitos to ensure your system runs reliably, efficiently, and safely. Whether you're maintaining an older furnace, tuning up a mini split, or upgrading to a high-efficiency heat pump, we handle it all with care.

Heating Installation

Looking to heat things up? We're ready to help you find the perfect heating system for your home. 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 requires more than simply replacing the air filter to remain in peak condition. When you reach out to us for heating upkeep, we'll thoroughly clean, check, and adjust each component. This leads to less frequent malfunctions, reduced energy costs, and significantly increased comfort.

Heating Repair

When you wake up to a cold home or your heater starts to show signs of wear, it's time to give us a call. We'll identify the problem, explain the solution, and make your house warm again. No runarounds, no upsells — just honest, effective heating repairs.

Heating Replacement

When your heater is nearing its end, replacing it doesn't need to be difficult. We'll guide you through the options to find a system that's efficient, reliable, and fits your home. After installation, we'll test it, adjust it, and teach you how to keep it running.

Furnace Services in Rancho Peñasquitos

Furnaces are still one of the most popular ways to heat homes in Rancho Peñasquitos — and we make sure yours is up to the task. Whether you're upgrading an aging system, scheduling a tune-up, or dealing with a sudden breakdown, our furnace services cover everything you need. We’ve handled challenging installations in elevated neighborhoods like Black Mountain Ranch and repairs in older homes near Los Peñasquitos Canyon Preserve.

Furnace Installation

An oversized furnace can cycle frequently, wasting energy and wearing down quicker, while a too small one will struggle to warm your home. We measure and perform your furnace installation to fit your home's specs.

Furnace Maintenance

Annual furnace check-ups, ideally before cold weather, ensure safe and efficient operation. Our furnace maintenance includes cleaning burners, inspecting the heat exchanger, checking for gas leaks, and testing safety controls.

Furnace Repair

Odd sounds, faint air circulation, and chilly rooms despite the heater being on are all indicators that your furnace might require fixing. If your system is pushing out cold air or refuses to start, our skilled HVAC experts will promptly come to your aid to restore your heating.

Furnace Replacement

If your furnace is irreparable or just too expensive to operate, it's usually a good idea to replace it. We take care of it all - from securely taking out the old model and getting rid of it, to professionally setting up your new, energy-saving furnace.

Indoor Air Quality Services in Rancho Peñasquitos

Clean air shouldn’t stop at your front door. We help Rancho Peñasquitos homeowners improve indoor air quality with systems that reduce dust, allergens, and humidity. From whole-home purifiers to dehumidifiers and smart ventilation, we install and maintain it all. With nearby outdoor gems like Hilltop Community Park, your indoor air should feel just as fresh.

Air Purifier Installation

For cleaner, healthier air in your home, installing an air purifier is a great decision. We set up whole-home air purifiers that trap dust, allergens, and airborne contaminants.

Air Purifier Repair

When your air purifier isn't working as it should, you might need to consider getting it repaired. Whether it's due to blocked filters or electrical glitches, we swiftly diagnose and solve issues to bring back fresh air flow.

Dehumidifier Installation

If your home feels damp due to high humidity, installing a dehumidifier can restore balance. We'll choose and set up the perfect 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 detectors, and issues with water drainage.

Duct Sealing

Leaky ducts can result in poor air quality, wasted energy, and elevated bills. Our duct sealing service identifies and resolves these leaks, ensuring clean, conditioned air is circulated properly.

Media Air Cleaner Installation

If you're concerned about allergies in your home, a media air cleaner installation can help. We install these devices that effectively trap 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 directly in your ducts, neutralizing bacteria, viruses, and mold.

UV Light Installation

Prevent the proliferation of mold and bacteria in your HVAC system with a UV light installation. We strategically locate these UV lights near your coils. As the air circulates, it gets sterilized, maintaining your system cleaner.

Home Safety & Comfort Controls in Rancho Peñasquitos

Your comfort system should do more than just adjust the temperature — it should make your home safer and smarter too. We install and service CO detectors, smart thermostats, and other essential safety and control devices in Rancho Peñasquitos homes. Whether you’re near Park Village Elementary or enjoying the trails at Canyonside Community Park, you can count on us to keep things running smoothly in the background.

CO Detector Installation

Setting up a CO detector makes sure your house is safe from harmful carbon monoxide leaks. We put trustworthy detectors in crucial spots to offer round-the-clock surveillance.

Thermostat Installation

Correct thermostat installation can enhance comfort and lower energy use. We install smart or programmable thermostats, saving you money.

Thermostat Repair

If your house seems overly warm or chilly, the thermostat could be the culprit. Reach out for a thermostat fix to sort out problems with temperature and connection.

Thermostat Replacement

Old-fashioned or untrustworthy temperature controls can be a drain on your comfort and your wallet. We'll suggest and set up a version that offers improved management and energy efficiency.

Solar Services in Rancho Peñasquitos

Ready to take control of your energy future? With solar services from Guthrie & Sons, you can tap into Rancho Peñasquitos' abundant sunshine for clean, reliable power. We install solar panels, battery backups, and EV chargers that help reduce your energy bills and boost long-term savings.

Heat Pump Water Heater Services in Rancho Peñasquitos

Save energy and enjoy dependable hot water with a heat pump water heater. These innovative systems are perfect for Rancho Peñasquitos homeowners looking to reduce energy usage without sacrificing comfort. Whether you live near Hilltop Community Park or Twin Trails Park, we’ll help you upgrade to a more efficient, environmentally friendly solution for your water heating needs.

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