For reliable HVAC services in San Mateo, homeowners call IRBIS — a Carrier-certified company with same-day availability and licensed technicians ready for any job. From AC repair to full system replacement, we handle the complete HVAC lifecycle so your home stays comfortable in every season.
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IRBIS provides full heating and air conditioning services across San Mateo — cooling, heating, heat pumps, and water heaters — with same-day availability and Carrier-certified status. The Peninsula fog keeps mornings cool, but inland heat events push temperatures to 90–95°F+, and the coast does not fully protect. Having a reliable system matters more than residents expect.
July averages 72–76°F, but inland heat waves push San Mateo to 90–95°F+, and the marine layer offers no guarantee. IRBIS handles AC repair, maintenance, installation, and replacement.
January average lows hit 42°F — and coastal fog can push the felt temperature closer to 35°F. A furnace that just exists is not enough here. Prep before the season matters.
San Mateo's mild winters make heat pumps a practical year-round choice — one system for heating and cooling. Qualifying installations may be eligible for Peninsula Clean Energy (PCE) rebates.
Repair, maintenance, and installation — traditional and heat pump water heaters — for residential homes throughout San Mateo.
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July highs average 72–76°F, but heat waves push inland areas to 90–95°F+ — the coast does not fully protect. January lows hit 42°F, with coastal fog dropping the felt temperature to around 35°F. San Mateo sits within the California Fog Belt, with 100+ fog days per year and summer humidity ranging from 65–80% in Bayside neighborhoods. Systems here face conditions that differ significantly from those in the inland South Bay. Annual rainfall reaches ~24 inches — well above Sunnyvale (16") and Santa Clara (15") — and salt air near Foster City, Coyote Point, and Mariner's Island accelerates corrosion on outdoor HVAC units. San Mateo is served by Peninsula Clean Energy (PCE), the local community choice energy aggregator, which offers rebates for heat pump and high-efficiency AC upgrades.
San Mateo sits in one of the Bay Area's foggiest corridors. Humidity stays elevated through summer, condensation builds inside units year-round, and equipment that works fine in drier climates wears faster here. Maintenance intervals matter more than most homeowners realize.
Homes near Foster City, Coyote Point, and Mariner's Island are exposed to salt-laden air that corrodes condenser coils and electrical contacts faster than standard Bay Area conditions. Coil coatings and annual inspections extend unit life by years in these neighborhoods.
IRBIS delivers HVAC services to every residential property type in San Mateo — from single-family homes in Aragon and Beresford to condos near Hillsdale and pre-1960 properties across Baywood and San Mateo Park.
San Mateo's single-family housing spans mid-century ranches and two-story builds from the 1950s through the 1990s. IRBIS handles full HVAC system upgrades and replacements across all neighborhoods.
Hillsdale, Bay Meadows, and Downtown San Mateo have a growing base of attached homes with shared walls and limited mechanical access. IRBIS sizes and installs systems built for these layouts.
Older homes in Baywood, San Mateo Park, and College Heights were built without central ducts. Ductless mini-split systems deliver full heating and cooling — no major renovation required.
Heat pump, water heater, and EV charger installed as one coordinated package — built for California's 2030 gas equipment ban and eligible for PCE rebates.
Carrier Presidential Award Winner — top 3% of dealers nationwide. IRBIS is the Carrier specialist serving the Peninsula and Bay Area.
Carrier Presidential Award Winner
Not every HVAC company earns this — IRBIS does. Carrier is the benchmark for premium HVAC, and this award confirms our installation and service standards meet their highest criteria.
10-Year Parts & Labor Warranty
Competitors offer 12 months on repairs and 3 years on installations. IRBIS gives you 10 years, in writing.
Same-Day Service, 7 Days a Week
Call before noon, and we will arrive today.
4.9 Google | 4.8 Yelp
1,451 Google reviews and 615 Yelp reviews from real Sunnyvale customers.
Licensed & Insured — CSLB #1048009
Every technician is a licensed HVAC professional, not a subcontractor.
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Carrier, Trane, Lennox, Rheem, Daikin, Mitsubishi, Goodman — as a trusted HVAC contractor and heating and cooling contractor serving San Mateo, IRBIS services all major brands regardless of what is installed. Our HVAC technicians carry parts for most systems and resolve the majority of repairs in a single visit.
IRBIS technicians know San Mateo neighborhoods inside out — across ZIP codes 94401, 94402, 94403, 94404, and 94497. From Downtown San Mateo and Baywood to San Mateo Park, Hillsdale, Aragon, Beresford, Shoreview, North Shoreview, Mariner's Island, Bay Meadows, Hayward Park, College Heights, and the Coyote Point area — our team understands both the salt air challenges of Bay-adjacent homes and the ductwork gaps common in pre-1960 properties.
Peninsula fog and salt air shorten maintenance intervals for San Mateo systems. The IRBIS Home Care Plan keeps your equipment inspected and tuned year-round — for $24.95 a month.
Seasonal Maintenance
Full HVAC, Plumbing, Electrical Maintenance
Free Inspections
Regular fee $115
VIP Priority Scheduling
Get an appointment within 48h or faster
Special discounts
20% off for repairs, 5% off for replacements
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Step 1
Our trained and licensed specialists will diagnose your furnace, meticulously evaluating all components. This thorough assessment ensures the root cause of any issue is identified, preventing recurring problems and ensuring the system operates at peak efficiency.
Step 2
Based on the assessment, we will recommend tailored solutions to address your furnace’s issues. This approach empowers homeowners to make informed decisions about repairs, considering factors such as budget, urgency, and long-term system performance.
Step 3
Once you select a repair option, IRBIS technicians will carry out the necessary repairs using high-quality parts and tools. Their expertise and well-equipped vans allow them to handle most repairs promptly, ensuring your HVAC system is back to optimal efficiency with minimal downtime.
Step 4
We provide ongoing support and expert advice to help ensure the continued efficiency of your HVAC system.
October 8, 2026
Residents of the City of Santa Clara, California, can get up to $10,000 back when they replace an old gas furnace with an electric heat pump. The rebate is offered by Silicon Valley Power (SVP), the city's municipal electric utility.
October 1, 2026
Search for a cold weather plumbing checklist, and you will get the same list every time: insulate your pipes, disconnect the garden hose, let the faucets drip overnight. It is good advice, and it is written for Chicago.
September 28, 2026
Your furnace has been sitting idle since spring. On some October evening, the Bay Area drops into the 40s, you push the thermostat up for the first time in months, and the system pulls air through whatever furnace filter was left in the slot back in May. That first heat cycle is when a neglected filter does the most damage: months of collected dust, pollen, pet hair, and summer wildfire smoke particles sitting directly in front of your blower.
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Questions & Answers
Yes. Ductless mini-split systems are a direct solution — full heating and cooling with no renovation required. Installation typically takes one to two days.
IRBIS backs every installation with a 10-year parts and labor warranty. Most local contractors offer 1–3 years — we cover a full decade at no extra cost.
Yes. All IRBIS technicians are licensed, Carrier-certified, and background-checked. The company holds CA CSLB #1048009 and carries full insurance on every job.
Yes — same-day service is available 7 days a week across all San Mateo neighborhoods. Call before noon, and we can typically have a technician at your door that afternoon.
Yes. Inland heat events push temperatures to 90–95°F+, and the marine layer offers no guarantee. Most homeowners without AC regret it by late July.
It does. Salt air corrodes condenser coils and electrical contacts faster than standard conditions. Annual coil cleaning and protective coatings significantly extend equipment life for Bay-adjacent homes.
Yes, most HVAC replacements require a permit. IRBIS pulls all required permits, coordinates with the city, and schedules inspections as part of every installation job.
Yes. IRBIS handles the full application process and confirms the current funding status at your estimate. PCE program amounts update throughout the year, so we verify before submitting.
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