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AC INSTALLATION AND REPLACEMENT IN THE BAY AREA, CA
AC INSTALLATION & REPLACEMENT IN THE BAY AREA
Airstars HVAC installs and replaces central air conditioners for homes in Hayward, Fremont, San Leandro, Walnut Creek, Oakland, Union City and the surrounding Bay Area. If your AC is old, keeps breaking down or no longer keeps the house cool, call us: we size the new system to your home and check the ductwork before anything is installed.
In the Bay Area, energy costs are rising. Replacing a 15-year-old AC with a modern, high-efficiency system can reduce your cooling costs by up to 40%. We specialize in designing custom cooling solutions that fit your specific home and budget. We don’t just swap boxes; we engineer comfort.
WHAT OUR CLIENTS SAY ABOUT US
★★★★★
I had problems with my heater not starting I call 5 companies and Airstars was the first to respond I make appointment for the same day and the technician came with parts same day and fix the heater good quality service, thank you
Miguel B.
★★★★★
I have nothing but the highest praise for Juan. He was diligent, knowledgeable, friendly, polite, shared some great info. I had initially hired Airstars to just replace a thermostat in an old oven but ended up purchasing a completely new one. No regrets. They made it painless. Will 100% hire them again for whatever appliance needs.
EM S.
★★★★★
Rafael and team have been very responsive, thorough, and accommodating to ensure my HVAC and ductwork are back in better shape than ever. They took pictures and explained everything to me to ensure I knew every step and the extra effort they put in to create a great customer experience!
Dustin S.
OUR HVAC WORK IN THE BAY AREA
5 SIGNS YOU NEED A NEW AC UNIT
Before you spend more money on repairs, consider these warning signs from Energy Star:
- R-22 Freon Use: Older units use R-22 refrigerant, which has been phased out by the EPA. Sourcing this refrigerant is now incredibly expensive.
- The Age Factor: The average lifespan of an AC unit in California is 10–15 years. If yours is approaching this age, efficiency drops significantly.
- Frequent Breakdowns: If you are calling for repairs every summer, you are throwing money away.
- Rising Energy Bills: As internal parts wear out, the system works harder to provide the same amount of cooling.
- Uneven Cooling: One room is freezing while another is sweating. This often indicates the unit is losing compression or was sized incorrectly.
THE AIRSTARS “SCIENCE OF COMFORT” INSTALLATION PROCESS
The most important day in the life of your air conditioner is the day it is installed. Even the most expensive brand will fail if installed poorly. We follow the strict guidelines set by the Air Conditioning Contractors of America (ACCA) to ensure your system is engineered perfectly for your specific home.
Step 1: Manual J Load Calculation (Right-Sizing)
We never guess. We measure your home’s square footage, ceiling height, insulation quality, window orientation, and even local heat load factors.
- Too Big: The unit cools too fast and shuts off (“short cycling”), leaving humidity in the air and wearing out the motor.
- Too Small: The unit runs continuously but never reaches your set temperature.
- Just Right: We calculate the exact tonnage needed for maximum efficiency.
Step 2: Ductwork Inspection & Sealing
Your ducts are the “lungs” of your home. According to the Department of Energy, typical homes lose 20-30% of the air that moves through the duct system due to leaks. Before installing your new AC, we inspect, seal, or repair ductwork to ensure you get every degree of cooling you pay for.
Step 3: Precision Installation
Our NATE-certified technicians handle the entire process:
Testing airflow and static pressure.
Safe removal and recycling of your old unit (refrigerant recovery).
Installation of a new concrete or composite pad to dampen vibration.
Brazing copper lines with nitrogen purging (preventing internal oxidation).
Installing a new matching evaporator coil.
ENERGY EFFICIENCY & SEER2 RATINGS EXPLAINED
In 2023, the Department of Energy introduced stricter testing standards known as SEER2. The higher the SEER2 rating, the less electricity the unit uses.
Replacing a 10 SEER unit (standard in 2005) with a modern 16+ SEER2 system can reduce your cooling costs by 30% to 50%.
Financial Incentives & Rebates
We help you apply for all available rebates to lower your upfront cost:
Learn more about available tax credits at Energy.gov.
Local Utility Rebates: Incentives from PG&E or BayREN for energy-efficient upgrades.
SERVICES WE OFFER
Heating, cooling and indoor air services from Airstars HVAC.
- AC Repair
Diagnosis and repair of central air, heat pumps and ductless systems - Heating Installation and Repair
Furnace and heating repair, replacement and installs - Heat Pump Repair and Installation
Ducted and ductless heat pump work - Ductless Mini-Split Installation
Single and multi-zone ductless systems - HVAC Maintenance
Seasonal tune-ups for heating and cooling - Air Duct Cleaning
Duct cleaning, sealing and airflow checks - Indoor Air Quality
Filtration and indoor air quality upgrades - Plumbing
Home plumbing repair and installation
SERVICE AREAS
Airstars serves homes across the Bay Area and the Central Valley, including:
- HVAC Service in Hayward, CA
- HVAC Service in Oakland, CA
- HVAC Service in Fremont, CA
- HVAC Service in Pleasanton, CA
- HVAC Service in San Ramon, CA
- HVAC Service in Walnut Creek, CA
- HVAC Service in San Jose, CA
- HVAC Service in Sunnyvale, CA
- HVAC Service in Palo Alto, CA
- HVAC Service in Sacramento, CA
- HVAC Service in Elk Grove, CA
- HVAC Service in Stockton, CA
AC INSTALLATION FAQS
How much does a new AC installation cost in the Bay Area?
The price depends heavily on the size of your home, the difficulty of the installation, and the efficiency rating you choose. We provide a guaranteed, flat-rate price in writing after our free site visit—no hidden fees.
How long will my new air conditioner last?
With proper annual maintenance, a modern AC system typically lasts 15 to 20 years. We offer maintenance plans to ensure you get the full lifespan out of your investment.
Do I need a permit to replace my AC in Hayward?
Yes. City codes in Hayward, Fremont, and surrounding areas require a building permit for HVAC replacements to ensure electrical safety and energy compliance (Title 24). Airstars handles all permitting and city inspections for you.
Do you offer financing options?
Absolutely. We believe everyone deserves a fabulous home. We partner with trusted lenders to offer flexible financing plans, including 0% interest options for qualified buyers.
What size air conditioner does my house need?
Size comes from a load assessment of the house itself: its floor area, insulation, windows, sun exposure and ductwork. We measure first and quote second, because an oversized unit short-cycles and an undersized one runs without catching up.
Can you replace my air conditioner without replacing the furnace?
Often, yes. We check that the existing furnace or air handler, coil and ductwork are compatible with the new outdoor unit before recommending a matched replacement or a full system change.
CONTACT AIRSTARS HVAC
BOOK AC INSTALLATION IN THE BAY AREA
Tell us what the system is doing and where the equipment sits, and we will get you booked. Call us or send the request form and we will reply to your inquiry.
OUR SERVICE AREA