SPRING SPECIAL, Limited Time Offer. Save $3,000 on a New System Installation. While Supplies Last. More details...
Heating and Air Conditioning Services in San Mateo, CA
Expert Heating, Cooling & Air Quality Solutions
Quick Answers About San Mateo HVAC Services
Get instant answers to the most common questions
What HVAC services does Galaxy offer in San Mateo?
We provide complete HVAC services in San Mateo including heat pump installation, furnace repair and replacement, AC installation and repair, ductless mini-split systems, indoor air quality solutions, and 24/7 emergency service. Our NATE-certified technicians serve all San Mateo neighborhoods.
How quickly can Galaxy respond to service calls in San Mateo?
We offer same-day service throughout San Mateo and are available 24/7 for emergencies. Most service calls are scheduled within 24 hours, and our emergency technicians can typically arrive within 2-4 hours for urgent heating or cooling failures.
Does Galaxy serve all neighborhoods in San Mateo?
Yes! We proudly serve every neighborhood in San Mateo and throughout San Mateo & San Francisco Counties. Our San Mateo-based technicians are familiar with local housing types, climate conditions, and the unique HVAC needs of San Mateo homes and businesses.
What makes Galaxy the best HVAC contractor in San Mateo?
Galaxy stands out in San Mateo with 24/7 phone availability, NATE-certified technicians, American Standard Platinum Dealer status, upfront pricing, same-day service, and A+ BBB rating. We specialize in the San Mateo climate and offer lifetime warranty coverage on qualifying systems.
Have more questions? Call us at (925) 578-3379 or schedule a consultation
What HVAC Services Do You Offer in San Mateo?
San Mateo serves as the Peninsula's anchor city — a balanced mix of residential neighborhoods, a thriving downtown along Third Avenue, easy BART and Caltrain access, and a location that splits the geographic difference between San Francisco and Silicon Valley. The city's housing diversity reflects its anchor role: historic neighborhoods with Craftsman and Tudor homes near downtown; established family neighborhoods in Baywood Park and Beresford Manor; newer developments closer to the Bay; and significant commercial and multi-family housing throughout. Galaxy serves all of it.
We work throughout San Mateo's varied neighborhoods: downtown-adjacent Craftsman homes where ductless heat pumps provide modern comfort while preserving original architecture; established residential neighborhoods in Beresford Park and Baywood where mid-century homes benefit from heat pump conversions; Bay Meadows and newer developments where modern construction gets variable-speed upgrades; and San Mateo's significant commercial corridor from El Camino Real through downtown where retail, restaurant, and office HVAC requires reliable business service.
San Mateo's central Peninsula location creates a climate that's genuinely moderate — warmer than the fog-dominant northern Peninsula, cooler than inland heat pockets to the south, with summers averaging 70–80°F and mild winters rarely requiring heavy heating. This is precisely the climate band where heat pump efficiency shines: moderate conditions allow inverter-driven systems to operate continuously at low speed, delivering precise comfort at minimal energy cost. The upgrade from gas heating to heat pump technology makes strong economic sense in San Mateo's climate.
San Mateo homeowners qualify for We provide free estimates Same-day service available, 24/7 emergency coverage. Call (925) 578-3379.
Why Trust Galaxy for San Mateo HVAC Service?
San Mateo's housing includes post-war single-family neighborhoods, iconic Eichler homes with radiant floors and post-and-beam construction, and modern downtown condos. Many homeowners are upgrading to efficient heat pumps that provide year - round comfort-heating for cool mornings and optional AC for increasingly warm Peninsula days. Eichler homes especially benefit from ductless heat pumps that preserve their architectural integrity.
We serve San Mateo's commercial sector, including downtown retail and restaurants, office buildings, medical facilities, and the San Mateo Event Center. Our commercial team handles rooftop units, multi-zone systems, and precision climate control with reliable service and competitive pricing.
San Mateo's Peninsula location creates a comfortable coastal climate with cool marine layer mornings (often 55-65°F), mild afternoons, and occasional warm inland days reaching 80-85°F. This moderate climate is ideal for efficient heat pumps that provide heating year-round while offering optional cooling during warmer months. Many San Mateo homeowners appreciate heat pumps' all-electric operation and environmental benefits.
Areas We Serve:
Which HVAC Services Are Available in San Mateo?
Click on any service below to learn more about how we can keep your San Mateo home comfortable year-round.
Furnace Repair
Expert furnace diagnostics and repair to restore your heating. Same-day service for all furnace brands serving San Mateo's climate.
AC Repair
Fast, same-day air conditioning repair for all makes and models. Essential for San Mateo's warm summer temperatures.
Heat Pump Repair
Professional heat pump repair for efficient year-round comfort. Expert diagnostics and repairs for American Standard, Mitsubishi, Carrier, and Lennox systems.
Furnace Installation
High-efficiency furnaces from American Standard, Carrier, and Lennox up to 98% AFUE for reliable warmth in San Mateo's mild winters. Proper sizing and installation for maximum efficiency.
AC Installation
High-efficiency air conditioning systems from top brands for San Mateo homes. Variable-speed cooling designed for optimal energy savings.
Heat Pump Installation
All-electric heating and cooling with premium heat pumps from American Standard, Mitsubishi, Carrier, and Lennox. Perfect for San Mateo's climate with energy savings up to 50%.
24/7 Emergency HVAC in San Mateo
Heating or cooling failure? We respond fast — day, night, and weekends.
Pricing & Options
Better Comfort
2-stage systems (Carrier & American Standard) – dependable heating for Peninsula climate
Best Comfort
Variable-speed heat pumps (Lennox, Mitsubishi, Carrier) – efficient heating & cooling year-round
Ductless Systems
Perfect for Eichler homes, ADUs, and spaces without ductwork
Recent San Mateo Installations
Hillsdale Neighborhood
Installed a new American Standard high-efficiency gas furnace alongside a matching water heater in the utility closet of a 2,100 sq ft Hillsdale home. The clean side-by-side install replaced 15-year-old equipment, providing efficient year-round heating, smart-thermostat control, and improved combustion safety with new venting. The homeowner reports 34% lower energy costs.
Baywood Neighborhood
Replaced an aging gas furnace with a high-efficiency 20 SEER2 Lennox XC21 variable-speed heat pump in a 1,900 sq ft Baywood home. The new system provides efficient heating, optional AC for warm days, operates whisper-quiet, and integrates with the homeowner's smart home system. The Peninsula's moderate climate makes heat pumps ideal-handling both heating and the occasional need for cooling.
San Mateo Park Neighborhood
Installed a Mitsubishi ductless multi-zone system (model MXZ-3C30 with 3 zones) in a classic Eichler home in San Mateo Park. The home's post-and-beam architecture and radiant floors made traditional ductwork impractical. The new system provides efficient heating, optional AC, independent room control, and preserves the home's iconic mid-century design while delivering modern comfort.
Your Trusted San Mateo HVAC Experts
Serving San Mateo with elite manufacturer certifications, comprehensive warranties, and local expertise you can trust.
American Standard Platinum Dealer
Elite certification for exceptional customer care
Diamond Elite Mitsubishi Authorized
Factory-certified installation excellence
5-Year Labor Warranty Included
Every San Mateo installation protected
BBB A+ & Diamond Certified
Top ratings from San Mateo customers
Local San Mateo & San Francisco Counties Experts
We live, work, and serve here
Flexible Financing
Affordable payment options available
Why Do San Mateo Homeowners Choose Galaxy?
24/7 Emergency Service
HVAC emergencies don't wait for business hours. We're available 24/7 to serve San Mateo residents.
Fast Response Times
Serving San Mateo and throughout San Mateo & San Francisco Counties with same-day service when you need it most.
NATE-Certified Technicians
Our team is trained, certified, and experienced in servicing all major HVAC brands and models.
Upfront, Transparent Pricing
No surprises. We provide clear estimates before starting any work in your San Mateo home.
100% Satisfaction Guarantee
We stand behind our work with a complete satisfaction guarantee on all services.
Locally Owned & Operated
We're your neighbors in the Bay Area, committed to exceptional service for San Mateo residents.
What San Mateo Customers Say
"Last summer, our AC unit decided to give up on one of the hottest days in Hillsdale. I called Galaxy Heating & Air Conditioning, and they were at my house within the hour. The technician quickly diagnosed the issue and had us cooling off again in no time. They really saved us from the heat!"
"I had been struggling with high energy bills in my Baywood home, so I decided to get a new HVAC system. Galaxy helped me choose an energy-efficient model that fits perfectly and works like a charm. The installation was seamless, and I appreciate how knowledgeable the team was. My bills have already started to drop!"
"Our heater broke down in the middle of winter here in San Mateo Park, and I was panicking! I called Galaxy Heating & Air Conditioning, and they sent someone out right away. The technician was friendly and explained everything he was doing. He had it fixed before we knew it, and I was so relieved to have heat again!"
Top HVAC Products for San Mateo Homes
American Standard Platinum Heat Pump
20 SEERModel: 5A6V0X
Our flagship heat pump for San Mateo homes. Fully communicating system pairs with Platinum air handlers for precise, variable-speed comfort year-round.
American Standard Side-Discharge Heat Pump
16 SEERModel: 5HPL50
Built for San Mateo homes where outdoor space is tight. Side-discharge airflow opens up installations in narrow side yards, enclosed pads, or mechanical closets.
American Standard Gold 2-Stage AC
17 SEERModel: 5A7A70
A smart upgrade for San Mateo homes with existing gas heat. The 2-stage compressor runs at low stage most of the time — quieter, more efficient, and better humidity control than single-stage units.
Carrier Crossover Series Heat Pump
Up to 26 SEER2Models: 37MURA / 37MUHA
Carrier's ductless crossover heat pump for San Mateo homes. Pairs with a gas furnace or air handler for a hybrid system — or installs standalone for garages and room additions.
Mitsubishi MSZ-GL Mini-Split
Up to 23 SEERSeries: MSZ-GL / MUZ-GL
A reliable, cost-effective ductless solution for San Mateo rooms, garages, and additions. Quiet inverter-driven cooling and heating with no ductwork required.
Lennox SLP99V Variable-Speed Furnace
99% AFUEModel: SLP99V
The most efficient gas furnace we install — 99 cents of every gas dollar goes directly to heat. A top choice for San Mateo homeowners who want to maximize gas savings during winter.
Common HVAC Questions in San Mateo
How often should I have my HVAC system serviced in San Mateo?
We recommend professional HVAC maintenance twice a year—once before cooling season (spring) and once before heating season (fall). San Mateo's Peninsula location creates a moderate coastal climate with cool marine layer mornings, mild afternoons, and occasional warm days inland. Regular maintenance prevents breakdowns, improves efficiency, and extends equipment life. Ask about our maintenance plans for San Mateo homeowners.
Can I get a free quote for heating and cooling installation in San Mateo?
Absolutely! We provide free, no-obligation estimates for all new HVAC installations in San Mateo. Our comfort advisors will visit your home, assess your heating and cooling needs, and recommend the best system for your space and budget. We offer flexible financing options with payments as low as $89/month on approved credit.
What financing options are available for HVAC systems in San Mateo?
We offer flexible financing with convenient monthly payments on approved credit. Whether you're upgrading to a high-efficiency heat pump, replacing an aging furnace, or installing a new AC system, we'll help you find a payment plan that fits your budget. Ask about our 0% interest promotions available to San Mateo homeowners.
What should I expect to pay for heating or AC repair in San Mateo?
Most HVAC repairs in San Mateo range from $225-$550 for common issues like igniter replacement, capacitor failure, or thermostat problems. More complex repairs involving motors or control boards can run $500-$1,200. Remember, our $59 diagnostic fee gets applied to your repair cost. We always provide upfront pricing before starting work.
Does Galaxy provide HVAC service near San Mateo?
Galaxy Heating & Air Conditioning proudly serves San Mateo and all of San Mateo & San Francisco Counties, plus the greater Bay Area including Contra Costa, Alameda, San Mateo, Santa Clara, and San Francisco counties. We serve residential and commercial customers with the same commitment to quality. Our San Mateo & San Francisco Counties-based technicians know local homes and climate conditions.
How much does HVAC diagnostic service cost in San Mateo?
Our diagnostic/troubleshooting fee is just $59, and it gets applied toward your repair if you proceed with service. This covers a complete system evaluation by our NATE-certified technicians. We provide upfront pricing before any work begins—no hidden fees or surprise charges. Call (925) 578-3379 to schedule same-day service in San Mateo.
Is emergency heating and cooling service available in San Mateo?
Yes! Galaxy provides 24/7 emergency HVAC service throughout San Mateo and San Mateo & San Francisco Counties. Whether your furnace fails on a cold winter night or your AC breaks down during a heat wave, our technicians are available around the clock. We serve all San Mateo neighborhoods including Hillsdale, Baywood, San Mateo Park. Call (925) 578-3379 anytime.
Which heating and cooling brands does Galaxy work with in San Mateo?
We install and service all major HVAC brands including American Standard, Carrier, Lennox, Trane, Rheem, Mitsubishi, Daikin, Bryant, Goodman, and more. As an American Standard Platinum Dealer, we offer premium equipment with exclusive warranties. Our NATE-certified technicians are trained on all makes and models for San Mateo homes.
HVAC Services in Cities Near San Mateo
Galaxy serves all of San Mateo & San Francisco Counties. Browse our full lineup of heating, cooling, and heat pump services in nearby communities.
We Also Serve Cities Near San Mateo
Contra Costa County
San Mateo & SF Counties
- › Atherton
- › Belmont
- › Burlingame
- › Daly City
- › Foster City
- › Hillsborough
- › Menlo Park
- › Millbrae
Ready to Get Started in San Mateo?
Call us today for fast, reliable HVAC service from San Mateo's most trusted contractor.