Get up to 750.00 OFF your Furnace Replacement or Installation

7 DAY SERVICE 408-720-9500 / 650-323-2244


Residential and Commercial HVAC Services Since 1985 / 8:00AM - 7:00PM Serving Santa Clara & San Mateo County

Whether you need a routine maintenance check, an emergency repair, Replacement or Installation on  Wall heaters, Floor Heaters, Heat Pumps, Furnaces,  Air conditioning, Central Heating and Air, Roof package Units, Duct work or your thermostat. We are available to handle  all of your heating, cooling and ventilation needs.  We continually strive to exceed expectations by ensuring that each  client receives the very best service. We offer SAME DAY REPLACEMENT AND 3 DAYS NEW INSTALLATION. Our Knowledge, experience and latest tools available guarantee our quality work.



Including: BRYANT, CARRIER, Trane. Lennox, Rheem, Payne, Amana, Coleman, Day & Night, Goodman, Nordyne, Heil, Ruud, Tempstar, York, Cozy, Williams and more. However, we will work with you to find HVAC solutions that fit your heating and cooling needs. We will provide you with a full consultation to explain all of your available options so that you can choose the system that’s right for your home or business.


Customer Satisfaction Guaranteed

We serve both residential and commercial clients and offer a variety of money-saving solutions. We combine our use of the highest quality parts and equipment, and our dedication to delivering  exceptional service to provide you with top quality service. SAVE Money with Nest Thermostat and control your heating and cooling from anywhere you are thru Wi Fi.

Why call Us

We Set Appointments within 2 hours

- We are licensed and bonded contractor

- Over 30 years in business

- Better Business Bureau registered & Rated A+

- Contractor State License in Good Outstanding

- Knowledgeable and courteous technicians

-Fully Stocked Trucks ready to DO your job.


 CITIES WE SERVE: Sunnyvale, Campbell, Monte Sereno, Saratoga, Cupertino, Los Altos, Los Altos Hills, Mountain View, Palo Alto, Stanford, Atherton, Menlo Park,Woodside, Redwood City, San Carlos, Belmont, San Mateo, Foster City, Hillsborough, Burlingame, Millbrae, Half Moon Bay, Pacifica, San Bruno, Daly City, S.S. Francisco, Brisbane.

Bay Air HVAC Services, Inc.


CALL..  (408) 720-9500  (650) 323-2244

Hours: Monday-Saturday 7:00am-7:00pm