HVAC Installation

HVAC Installation in San Diego County for Year-Round Comfort and Peace of Mind

Need an HVAC system for a new build, rental, or property you manage? We’ve got you! Whether it’s residential or commercial, Guthrie & Sons installs reliable systems at the right price—and we don’t stop there. We service what we install, so you’re never left wondering who to call when your system needs attention. When you choose us, you get local, licensed professionals who show up and do everything properly.

Get the Right HVAC System Installed by a Team You Can Trust

When you’re putting in a new HVAC system, you just want it to work—reliably, efficiently, and without constant headaches or high energy bills. Whether you’re building a new place, fixing up a rental, or upgrading a property you manage, you want a setup that makes sense for your space and budget.

That’s what we do at Guthrie & Sons Heating, Air & Solar. We’re a second-generation, family-owned company that’s been serving San Diego since 2005. Our NATE-certified technicians know this work inside and out—and we treat your install like we’d do it for our own house. We’ll help you pick the right system, get it installed right the first time, and be around if you ever need service. If you’re interested in an HVAC installation in San Diego County, give us a call or request a free quote online—we’re here when you’re ready!

Explore HVAC Pricing With Our Free Online Quoting Tool

Explore HVAC Pricing With Our Free Online Quoting Tool

Trying to figure out what a new HVAC system might cost—but don’t have time to meet just yet? We get it. That’s why we created a free online quoting tool you can use anytime. Just answer a few quick questions about your home, and we’ll give you a ballpark HVAC installation estimate to help you start planning.

If you’re ready later, we’ll follow up with an in-person visit to confirm everything. And of course, our in-home estimates are always free if you prefer to skip the form and meet in person. No pressure. No big sales pitch. Just info to help you make the right call for your home.

Need Help With Financing? No Problem!

Need Help With Financing? No Problem!

A new HVAC system is a major investment, and not everyone’s ready to cover it all at once. That’s why Guthrie & Sons offers flexible financing options to help make your new heating or cooling system more affordable upfront.

Have questions? Call us and speak with one of our friendly team members. We’ll walk you through your options and help you feel confident moving forward. A more comfortable home is within reach—and we’re here to help you get there.

HVAC Installation Services Built Around the Way You Live

San Diego has great weather most of the year, but when it’s hot, it’s hot. Whether you’re building a new place, updating a rental, or finishing out a garage or ADU, you’ll want a system that fits the space.

Not every home here has central AC, and not everyone needs the same setup. That’s why we install all kinds of HVAC systems—so you get comfort that actually works for your home, not someone else’s.

Whether you’re building from scratch or adding air to a space that’s never had it, we install the right heating and cooling system for your needs. We work with all types of homes—from beach cottages to East County rentals—and we’ll help you choose a system that fits your layout, lifestyle, and energy goals.

If your home doesn’t already have central air, we can install an AC system that brings cool, even comfort to every room. Our air conditioning installation services are perfect for new builds, remodels, or homes that have never needed AC—until now. We’ll help you choose a system that’s the right size and efficiency for San Diego’s climate and your home’s square footage. From ductwork to thermostats, we handle it all. From ductwork to thermostats, we handle it all.

Don’t have existing ductwork? A ductless mini split installation gives you powerful heating and cooling without needing to open up walls. It’s a great choice for ADUs, home offices, garage conversions, and older homes. You’ll get zoned comfort and better energy control without the cost of a full HVAC setup. We install systems that blend into your space and keep each room feeling just right.

A heat pump installation gives you year-round comfort from one all-electric system. It cools your home in summer and reverses to heat in the winter—no separate furnace or AC needed. Heat pumps are especially efficient in San Diego’s mild climate and are great for homeowners looking to cut energy use. We’ll help you choose a system that fits your home and your budget.

If your new home has a gas hookup and you want a reliable heating option, we offer expert furnace installation. Furnaces heat your home fast and are ideal for families who want cozy comfort on cooler nights. They also pair well with central air conditioning systems. We’ll size the unit properly and install it to meet safety and efficiency standards.

Comfort isn’t just about temperature—it’s also about the air you breathe. Your HVAC system plays a big role in keeping your indoor air clean, safe, and balanced. We offer indoor air quality installation options that work with new HVAC systems or as standalone upgrades.

Our air purifier installation adds a filtration system to your HVAC setup to capture dust, allergens, and airborne particles. This is great for households with allergies, pets, or anyone who wants cleaner air throughout the home.

Safety comes first. Our carbon monoxide detector installation ensures your home has reliable CO monitoring, especially if you have gas appliances or a furnace. Every home should have one—and we’ll make sure it’s installed properly.

Too much moisture in the air can lead to mold, discomfort, and indoor air quality issues. A dehumidifier installation helps regulate humidity, especially in coastal areas or older homes.

A media air cleaner installation traps smaller airborne particles than standard filters can catch. They’re ideal for families that want better long-term air quality with low maintenance.

A new thermostat installation gives you better control over your comfort and energy use. We install smart and programmable thermostats that pair with your HVAC system for more precise temperature control.

UV air cleaner installation uses ultraviolet light to kill bacteria and viruses as air moves through your system. These systems are ideal for homeowners who want an added layer of protection against airborne germs.

A UV light installation helps keep your HVAC coils clean and prevents mold growth inside your system. It’s perfect for humid spots or homes that want to keep air flowing cleanly through ducts and vents.

We also install heat pump water heaters and solar systems—ask us how we can help make your home more energy-efficient from top to bottom!

Helpful HVAC Repair and Maintenance Services to Save You Time and Money

No matter where you live in San Diego County, chances are we’re already working near you. Our team handles HVAC installation and service calls every day—from Oceanside to Chula Vista and everywhere in between.

Even the best heating and cooling systems need some help from time to time. Maybe yours is making odd noises, not keeping up, or running harder than it should. When that happens, it’s time to call us for HVAC repair. We’ll come out, take a look, and get things working like they should again.

But the best way to avoid those surprise issues? Regular maintenance. A yearly tune-up helps catch problems early, keeps your system efficient, and saves you money in the long run.

Want to make it easy? Our USA Membership Plan includes scheduled maintenance, priority service, and discounts on repairs—so you’re covered when it matters most.

Frequently Asked Questions

That depends on your home’s square footage, layout, insulation, and more. We’ll do a Manual J load calculation to make sure your system is the right size—not too big, not too small. That way, it runs efficiently and keeps your home consistently comfortable.

In San Diego, a SEER rating of 15 or higher is a good balance of efficiency and cost. For heating, look for an AFUE rating of 90% or better if you’re going with a furnace. Rest assured that we’ll walk you through your options.

The price varies depending on your home, the type of system, and any added features or upgrades. Most full HVAC installations cost several thousand dollars, but we’ll give you a clear quote up front. We also offer financing options and can help you explore rebates.

Yes—many homeowners qualify for federal tax credits, local utility rebates, or California energy incentives. Programs change often, but we stay on top of what’s available. We’ll help you find every savings opportunity you qualify for.

Heating and Cooling Offers You Can't Miss

Big savings, same great service. See what offers are available now in Carlsbad for our favorite customers.

  • WATER HEATER

$2,600 Federal Tax Credit on Heat Pump Water Heater

Valid on a qualifying heat pump water heater installation with electrical panel upgrade. Up to $2,000 (30% of cost) in Federal Tax Credits for a heat pump water heater and up to $600 (30% of cost) for an electrical panel upgrade. Can be combined with state rebates only. Restrictions apply. See dealer for details.

  • INSTALLATION

Up to $11,750 Off a New System*

Qualify for HEEHRA and you can get up to $8,000 in HEEHRA rebates, up to $1,150 in manufacturer rebates and up to $2,600 in Federal Tax Credits for a total of up to $11,750 off a new installation. Valid on residential properties only. Cannot combine with any other offers. Must mention promo at time of estimate appointment. Restrictions apply. See dealer for details. Offer valid until funds last.

  • REPAIR

Free Diagnostic w/ a Repair

Your diagnostic service call fee will be waived if you proceed with a repair. Cannot combine with other offers. Restrictions apply. See dealer for details. Offer expires 6/30/25.

  • INSTALLATION

0% APR for 25 Months

Get 0% APR financing for 25 months on a new heating or air conditioning installation. 0% interest with 25 equal monthly payments. Financing subject to credit approval. Valid on residential properties only. Cannot combine with other offers. Must mention promo at time of estimate appointment. Restrictions apply. See dealer for details. Offer valid for an estimate appointment scheduled before 6/30/25.

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.

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!
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.

Interested in a Residential or Commercial HVAC Installation? Get a Free Quote From Us!

Since 2005, Guthrie & Sons Heating, Air & Solar has been the go-to team for HVAC installations across San Diego County. We’re family-owned, second-generation, and deeply rooted in this community—from Alpine and Ramona to Oceanside and San Ysidro.

We’ve installed systems in everything from single-story homes and new builds to duplexes, rentals, and commercial properties. Whether you're starting fresh or adding an HVAC unit years later, we help you find a setup that fits your space, your budget, and your long-term plans.

We’re not here to upsell—we’re here to get the job done right, and be the company you can rely on for service down the road. That’s what real help should look like. Call or request a free quote for HVAC installation in San Diego, California, online—let’s get your system set up right from the start!

8248 Ronson Road
San Diego, CA 92111
(619) 269-3013
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8248 Ronson Road
San Diego, CA 92111

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