Request a FREE, no-obligation appointment with us!

Exceptional Value & Low Pricing


Carol Flynn Promo Banner

Our Services

Welcome to Carol Flynn Heating & Cooling!

Let us design and install a highly efficient heating and cooling system in your home and/or office. Superior products and quality installations for less.

High quality heating and air conditioning products, superior service and low pricing, has made us a Bay Area HVAC favorite for over 65 years.

Today there are over 40,000 heating and cooling products in the marketplace. We have repaired installed, & maintained tens of thousands of them. Our knowledge, expertise, experience & know-how will benefit you greatly.

Carol Flynn Ask This Old House

FREE – 20 pg Carol Flynn Info Guide

Make smarter HVAC decisions. Numerous options to increase your comfort & save you money.


Estimates, safety inspections, energy efficiency inspections, professional HVAC advice and recommendations, product catalogs, and on-site proposals.

Nobody Knows Heating and Cooling Better Than We Do!

Let us save you money on your heating & cooling bills with our patented Energy Star approved air duct testing & internal leak sealing system. The most advanced sealing system in the industry.

We provide quality furnace installation and repairs in Hillsborough, Menlo Park, Redwood City, San Carlos, and Foster City. We are definitely the best when it comes to air conditioning repairs, replacement and installation in Hillsborough, Menlo Park, Redwood City, San Carlos, and Foster City.

Approximately 75% of homes in the US are estimated to have air duct leakage. Average leakage can be 20% to 40% even in new homes. Click “AIR DUCTS-TEST & REPAIR” for detailed information. PGE reimburses some costs in some areas. Call for more information.

Carol Flynn 14 Years
Carol Flynn Air Duct Association

Get Inspired


Our NATE Certified Technicians Repair & Install All Makes and Models of HVAC Equipment.

Our Credentials

Carol Flynn Bbb Logo
Carol Flynn Angie List
Carol Flynn Angies Logo
Carol Flynn Alexander Logo

“Carol Flynn Heating & Cooling is one of SF Bay Area’s Best HVAC Contractors”

– Diamond Certified