San Mateo

Heating and Air Conditioning Services in San Mateo, CA

If Something's Been Running Quietly Wrong, We'll Find It

The system is running. The house eventually gets to the temperature. But it takes longer than it used to, or one room never quite gets there, or last month’s bill was higher than what you ran. None of that feels urgent enough to call someone. The repairs that turn into our most expensive visits are usually the ones that announced themselves that way first. Catching a slow refrigerant leak before it damages the compressor is a service call. Catching it after is a replacement conversation.

San Mateo's Peninsula climate makes this pattern worse: the daily swing between cool foggy mornings and warmer afternoons means your system cycles more often than it would in a more stable climate, which means wear accumulates faster when something is already working against it.

AAA Furnace & Air Conditioning has been serving the area since 1957, when Joe Rando founded the company. Joe’s son, our current owner, grew up learning the trade alongside him. We’ve completed more than 10,000 projects across Silicon Valley and the Peninsula, so we know what it takes to do a job right. If your heating or cooling system is showing signs of trouble, we’ll find what’s wrong and give an estimate of service cost before any work begins.

Something not quite right with your San Mateo heating or cooling system? Contact us at (408) 521-1259, and we'll tell you what's going on.

The Full Range of What We Handle

Whether it's an urgent repair or a planned replacement, we cover everything a residential HVAC system in San Mateo might need.

Our services include:

Air conditioning
Heating services
Heat pump services
Ductless mini-split services
Duct cleaning
Indoor air quality

A diagnostic visit costs less than waiting another season to find out what's wrong. New equipment installations include a free estimate before any work is approved.

We Look at the Whole System, Starting with What Your House Has

San Mateo's housing stock ranges from Craftsman homes in Hayward Park with ductwork retrofitted decades after the house was built, to Eichler homes in the Highlands with radiant floor heating and no traditional ductwork at all, to postwar ranches in Beresford and Hillsdale that have been running the same system for 15 or 20 years.

The right evaluation looks at duct condition and air loss, refrigerant charge and coil condition, heat exchanger integrity on any gas furnace, and whether the system was ever correctly sized for the home it's in. What we find drives what we recommend.

Joe Rando founded AAA Furnace & Air Conditioning in 1957, and his son, our current owner, grew up learning the trade alongside him. If you have an Eichler and aren't sure about your heating and cooling options, we can give you a clear answer. If you're in one of Shoreview's bay-adjacent neighborhoods, where outdoor units are exposed to extra moisture year-round, we account for that in how we evaluate and what we recommend.

How we can Help:

Frequently Asked Questions About HVAC Services

The following are the questions we hear most often from homeowners before a first visit.

My System Is Running Fine. Is There Any Reason to Have It Evaluated?

Running and running well are two different things. A system operating with a slow refrigerant leak, degraded duct sealing, or a developing heat exchanger issue may keep your home comfortable for another season before it stops. An evaluation tells you which side of that line you're on. If everything checks out, you have confirmation. If something needs attention, you find out before you're making decisions under pressure.

Do You Work on Eichler Homes?

Yes. The Eichler homes in the Highlands were built with radiant floor heating and no traditional ductwork, which makes central forced-air systems a difficult fit without compromising the architecture. Ductless mini-split systems are typically the right approach, and we have experience working in that specific housing type. If you have an Eichler and aren't sure what your heating or cooling options are, we can walk you through them.

How Long Have You Been Serving the Area?

We've been serving the Peninsula since 1957. The company is in its second generation of family ownership, and our technicians have worked on the full range of San Mateo's housing, from the Craftsman homes in Hayward Park to the Eichlers in the Highlands to the postwar ranches in Beresford and Hillsdale.

You'll Know What We Found Before We Write Up the Estimate

Our technicians explain what we’re doing before we do it. That's how Hector and Josh show up in reviews by name: customers remember the technician who walked them through what the inspection found, told them what it meant, and gave them a clear picture of the options before anything was approved.

On a Peninsula home where the ductwork is 40 years old and the system has been cycling harder than it should, that conversation changes what you decide. You're making an informed call based on what's in your home, with a clear picture of what the work involves before you approve anything.

Every completed job is backed by a one-year warranty on parts and labor. Our current owner wants to hear about it personally if something isn't right. We're an authorized Carrier dealer, EPA-registered, and a BBB Accredited Business with an A+ rating. If you need flexibility on a larger installation, financing is available.

Reach out at (408) 521-1259 or request an appointment online. We serve San Mateo and the surrounding Peninsula communities.

Why Choose AAA Furnace & Air Conditioning?

Warranties on Parts & Labor
Your comfort and peace of mind are our top priorities. That’s why we stand behind our work with a comprehensive one-year warranty on both parts and labor, along with additional warranties for added protection.
Free Estimates on Installations

We proudly offer free estimates on new equipment installations, including furnaces, water heaters, air conditioners, as well as duct cleaning services. Our team provides honest assessments and clear recommendations, ensuring you have all the information you need to make a confident, informed decision.
Financing Available
To make your investment even more accessible, we proudly offer flexible financing options through Service Finance. Our financing solutions are convenient and designed to fit your budget. This allows you to move forward with confidence and comfort—without financial stress.
Family-Owned & Locally Operated in Silicon Valley
At AAA Furnace & Air Conditioning, we take pride in treating our customers with care and respect. We are committed to doing right by our clients, ensuring that each project is approached with a focus on fairness and integrity. Unlike companies that treat customers as mere numbers, we see each client as a valued member of our community, deserving of individualized attention and top-notch service.
Personalized & Tailored HVAC Solutions
As a family-owned business, AAA Furnace & Air Conditioning takes pride in providing personalized service to every customer. We believe in treating our clients like family, ensuring that each interaction is tailored to meet their unique needs and preferences. Our team prioritizes building lasting relationships with our customers, offering a level of care and attention that sets us apart from larger corporations.
Transparent & Competitive Pricing
When you choose AAA Furnace & Air Conditioning, you can expect exceptional pricing without compromising on quality. We believe in fair and transparent pricing, offering honest assessments and upfront pricing to our customers. Our goal is to ensure that you receive the best value for your investment, without any hidden costs or surprises.
70 Years of Experience
One of the key reasons to choose AAA Furnace & Air Conditioning is our unwavering commitment to our customers. Unlike many businesses that may not outlast the warranties they offer, we stand by our work, providing reliable warranties on our HVAC equipment that reflect our confidence in the services we provide. This long-standing dedication to excellence sets us apart from the competition.

I would like to thank AAA for a wonderful job.
“I am happy with the cool and warm home. My installers Hal and Josh-H were very professional and completed on time.”

Elvira R.
Highly recommend him and would have him come out again.
“Josh came out and did a very thorough job of cleaning and checking my HVAC, also my water heater.”

Diane H.
They were done in about 3 hours and the end result looks & runs great.
“We're very satisfied with the quality of service we received with AAA Furnace and will be reaching out to them again for any future HVAC needs.”

Matt W.
They were prompt, respectful, courteous and had excellent customer service.
“In under 4 hours they had the issue fixed. They also uncovered issues w/our ducting that had been missed on prior visits.”

Joanna G.
Friendly, thorough and conscientious about their work
“We have been customers of AAA Furnace & Air Conditioning for a number of years now. We have always been impressed with the personnel and the quality of the work and have never been disappointed.”

Jim R.
Thanks to Hector and Alan for providing quality service.
“They are very professional and do good work. We've been using them for a few years and plan to continue.”

Clayton
He even left a spare air filter for the next time they need to be replaced!
“Hector went above and beyond with service today to ensure every part of my heater/ac unit was checked and cleaned.”

Sara B.
FANTASTIC SERVICE!
“Got the heater up and running best of all, my dog loved him!”

MC Larsen
We recommend them in a heartbeat.
“Excellent work, they were here four days installing ducts and heaters. They are very neat, thoughtful in explaining the process.”

Josh S.

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Proudly Serving Throughout Silicon Valley

(*) Services in these cities are limited to FREE estimates and new installations only.

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