For HVAC Fremont homeowners, IRBIS delivers Carrier-certified heating, cooling, and heat pump services with same-day availability. IRBIS handles the full HVAC lifecycle for homeowners — repair, installation, maintenance, and replacement.
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IRBIS takes care of all the HVAC services Fremont homes need — air conditioning, furnaces, heat pumps, and water heaters. The technicians at IRBIS are certified by Carrier and are available every day of the week.
Some neighborhoods in Fremont get really hot. These neighborhoods include Warm Springs, Mission San Jose, and Irvington. It can get up to 90-95 degrees Fahrenheit in these areas. IRBIS can help with air conditioning repair, maintenance, installation, and replacement.
Winters in Fremont are not too cold. It can get chilly in January. The temperature can go down to 43-45 degrees Fahrenheit. It is an idea to get the furnace ready in October or November. This way, it will be ready when it gets cold. IRBIS can help with furnace repair, maintenance, and installation.
The weather in Fremont is nice and mild. This makes heat pumps a choice. They can be used for heating and cooling. IRBIS can help with heat pumps. They can even help with rebates from EBCE and PG&E.
IRBIS can help with water heaters in Fremont. They can repair, maintain, and install them. They can even do it on the day. They work with water heaters and heat pump models. IRBIS is available to help with all kinds of water heaters.
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Alert
July is usually 82°F in Fremont. Neighborhoods like Warm Springs, Mission San Jose, and Irvington often get really hot, up to 90-95°F or more. This is because they are farther from the cooling Bay Breeze. Western Fremont areas like Ardenwood and Centerville are usually 5-8°F cooler in the summer. This difference is important when choosing the right system size. In January, it averages 49°F with lows around 43°F. This means heating systems need to work, not just be there. There's no rain from July to August. This dry spell makes dust build up faster in filters and coils. Fremont is a city in the Bay Area with over 230,000 people. Many tech workers live there. They want smart thermostats and efficient systems. The East Bay Community Energy (EBCE) helps. They offer rebates for people who upgrade to heat pumps and air conditioners.
Fremont merged five separate towns in 1956 — Centerville, Niles, Irvington, Mission San Jose, and Warm Springs. Each has a different housing stock, duct situation, and cooling load. One-size-fits-all sizing does not work here.
Fremont sits at the edge of Alameda County's fire-prone hills — Mission Peak, Vargas Plateau. During Diablo wind events in the fall, air quality drops fast. MERV-13 filtration and sealed ductwork matter more here than in coastal cities.
IRBIS serves all residential property types in Fremont — from 1950s ranch homes in Centerville and Niles to newer condos near the Warm Springs BART corridor.
Ranch-style and split-level homes in five historic districts — Centerville, Niles, Irvington, Mission San Jose, and Warm Springs. Full HVAC system upgrades and replacements.
New residential developments near Warm Springs/South Fremont BART and Fremont BART station include high-density condos and townhomes. IRBIS installs HOA-compliant quiet systems and mini-splits for units without central ductwork.
Many pre-1970 homes in Niles and Centerville were built without central ducts. Ductless mini-split systems deliver full heating and cooling — no renovation or wall work required.
All-electric packages for new builds: heat pump, water heater, and EV charger installed together — built for California's 2030 gas equipment ban.
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.
Alert
The HVAC company homeowners call for any brand — Carrier, Trane, Lennox, Rheem, Daikin, Mitsubishi, Goodman, and more. IRBIS services all major brands regardless of what is currently installed — one call covers any system in your Fremont home.
IRBIS technicians are familiar with HVAC home types across all five historic districts. We serve ZIP codes 94536, 94538, 94539, and 94555, covering Centerville, Niles, Irvington, Mission San Jose, Warm Springs, Ardenwood, Cherry-Guardino, Glenmoor, Sundale, Lake Elizabeth area, Fremont BART corridor, and the Warm Springs/South Fremont BART area.
Summers hit hard in eastern neighborhoods — and Diablo wind season brings its own challenges. The IRBIS Home Care Plan keeps your system ready 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
Alert
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 — 5–8°F on a hot day. Mission San Jose sits further inland and gets less Bay Breeze. Central and western Fremont near Ardenwood run noticeably cooler. System sizing should reflect this.
Start with a free assessment. IRBIS technicians know Irvington's 1960s housing stock well. For no-duct homes, ductless mini-splits are the standard solution — installed in one day, no structural changes.
IRBIS's 10-year parts and labor warranty covers it. Most Fremont contractors offer 1–3 years. Two years in is well within IRBIS's full decade of coverage on parts and labor.
Carrier holds the Presidential Award — top 3% of dealers nationwide. It's not just a brand preference; it reflects technical training standards, parts availability, and warranty support. IRBIS is a certified Carrier dealer.
Replacing an AC unit costs between $5,000 and $14,000. It depends on the system size, brand, and ductwork. IRBIS gives estimates at your home with no obligation.
We can get a mini-split system. IRBIS installs in townhomes like mine near Warm Springs BART. They do it without making any holes in the wall or having issues with the HOA.
Fremont is under EBCE. Pg&e. IRBIS helps with rebate programs. They figure out which ones I qualify for and handle all the paperwork.
IRBIS can get to the home fast for an urgent repair. They offer same-day HVAC service. A technician can come to your door in the afternoon if I call in the morning.
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