Carol Flynn, Inc.

Diamond Certified Company Report
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Carol Flynn, Inc.
545 SURVEYS
21 CONSECUTIVE YEARS
SINCE OCTOBER 2005
CERT 754

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545
Verified Customers
Surveyed
Customer Loyalty
Customer Satisfaction
Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

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  • Survey Responses (reviews)
  • Diamond Certified Video Player
  • Researched Articles & Profile
  • Capabilities
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  • Expert Contributor Advice & Tips
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Diamond Certified Company Report SUMMARY UPDATE September 2025

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Carol Flynn, Inc.

Rated Highest in Quality and Helpful Expertise for 21 Consecutive Years.

Quick Summary

  • Diamond Certified since 2005
  • Installs and repairs heating and cooling equipment for residential and commercial clients throughout the Bay Area
  • Carrier Factory Authorized Dealer
  • Offers free in-home estimates

Top News Updated

COMPANY MILESTONES

Carol Flynn, Inc. is celebrating its 71st anniversary in 2025.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They know what they’re doing, they’re very nice and you feel like you’re getting good service from them. I like that you can call...

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From a recent Diamond Certified Survey Response: “We bought an older home and wanted to start off fresh, so we hired Carol Flynn to clean all the air ducts. They were very thorough in the quality of their work, so we’ve continued to use them. They call and remind us when we need to schedule furnace maintenance, too.”

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Trending Projects

Carol Flynn, Inc. recently repaired an air conditioning system for a homeowner in San Francisco. The client was impressed that the company was able to quickly isolate the problem and...

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Carol Flynn, Inc.
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Carol Flynn, Inc.

Heating & Air Conditioning & Air Duct Cleaning
|
Alameda  Contra Costa  Marin  Napa  San Francisco  San Mateo  Santa Clara  Solano  Sonoma Counties
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545 SURVEYS
21 CONSECUTIVE YEARS
SINCE OCTOBER 2005
CERT 754

Rated Highest in Quality & Helpful Expertise Performance Guaranteed

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  • Business Practices
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Diamond Certified Researched Articles on Carol Flynn, Inc.

researched article

Carol Flynn, Inc. sends a fully stocked service truck to every jobsite.

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Carol Flynn, Inc. installs Carrier furnaces and air conditioners as a Carrier Factory Authorized Dealer. The company maintains, repairs, and cleans all makes and models of furnaces, air conditioners, air ducts, and general heating and cooling equipment for residential and commercial clients throughout the Bay Area. According to President Juan Sandoval, Carol Flynn’s high-quality heating and cooling products, coupled with superior service and low pricing, have made it one of the area’s leading HVAC businesses.

Mr. Sandoval says Carol Flynn, Inc. has installed and repaired tens of thousands of furnaces, air conditioners, and HVAC equipment since opening for business 71 years ago. All its work is performed by North American Technician Excellence (NATE) certified technicians who undergo continuous training to stay current on the industry’s technological advancements.

Carol Flynn, Inc. provides potential customers with a “Before You Buy” Information Guide, which contains heating and cooling facts and options designed to improve air comfort and save money. The company also offers free HVAC consultations, estimates, safety and energy efficiency inspections, and professional advice and recommendations.

Diamond Certified Researched Capabilities on Carol Flynn, Inc.

Service Area

serving area
The Bay Area
Serving the Bay Area

Main Services

Heating & Air Conditioning
  • Ac Tune Ups
  • Air Conditioner Repair
  • Air Conditioning
  • Commercial Air Conditioning
  • Ductless Heating And Cooling Systems
  • Furnace Repair
  • Heat Pump Repair
  • Heating
  • Hvac Installation
  • Hvac Replacement
  • Mini Splits
  • Water Heater Repair
Air Duct Cleaning
  • Air Duct Cleaning
  • Dryer Duct Cleaning
  • Ductwork
  • Hvac Cleaning
  • Insulated Ducts
  • Mini Split With Ducts
  • Vent Cleaning

Additional Services

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Company Info

Hours
Mon
08:00 am - 05:00 pm
Tue
08:00 am - 05:00 pm
Wed
08:00 am - 05:00 pm
Thu
08:00 am - 05:00 pm
Fri
08:00 am - 05:00 pm
Sat
Closed
Sun
Closed
Closed
Contact
Carol Flynn, Inc.

Capabilities Table

Company Name
Carol Flynn, Inc.
Managers
Juan Sandoval, President
Years in Industry
36 (Manager)
# of Employees
15
License
188751
Memberships
Building Trades Association, Electric & Gas Industries Association (EGIA), National Air Duct Cleaners Association (NADCA)
Founded
1954

Key Factors

Select Photos From Carol Flynn, Inc.

1 of 8Picture of Carol Flynn, Inc. sends a fully stocked service truck to every jobsite. - Carol Flynn, Inc.
Carol Flynn, Inc. sends a fully stocked service truck to every jobsite.
Picture of Carol Flynn, Inc. sends a fully stocked service truck to every jobsite. - Carol Flynn, Inc.
Picture of Customers can call Carol Flynn's toll-free number to set their appointments. - Carol Flynn, Inc.
Picture of Carol Flynn, Inc. schedules each inspection at the customer's convenience. - Carol Flynn, Inc.
Picture of Carol Flynn's office staff takes pride in helping customers. - Carol Flynn, Inc.
Picture of Carol Flynn, Inc. can help customers reduce their heating and air conditioning bills. - Carol Flynn, Inc.
Picture of Owner Juan Sandoval takes pride in providing high-quality work and customer satisfaction. - Carol Flynn, Inc.

Diamond Certified Expert Contributor Advice & Tips

Juan Sandoval is a veteran of the HVAC industry and president of Carol Flynn, Inc., a Diamond Certified company since 2005. He can be reached at (650) 530-0965 or by email.

Juan Sandoval is a veteran of the HVAC industry and president of Carol Flynn, Inc., a Diamond Certified company since 2005. He can be reached at (650) 530-0965 or by email.

Juan Sandoval: True Potential

By James Florence, Diamond Certified Program Reporter

SAN MATEO — While he’s found success as the owner of a Bay Area HVAC company, Juan Sandoval may never have reached his true potential if it wasn’t for an insistent employer who pushed him beyond his comfort zone. “I started in this industry back in 1987,” he says. “I had applied for a job as an air duct cleaning technician with a local service company, but the owner wanted to put me in sales. I didn’t feel that I was salesman material, but h...

Read Full Article - Juan Sandoval: True Potential

Carol Flynn, Inc. Website and External Feeds

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FAQs
By Carol Flynn, Inc.

Carol Flynn, Inc. Ratings and Survey Responses (reviews)

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Carol Flynn, Inc.
545 SURVEYS
  • 4.6
  • star image
  • star image
  • star image
  • star image
  • star image
21 CONSECUTIVE YEARS
SINCE OCTOBER 2005
CERT 754

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance
Carol Flynn, Inc.

Based in Brisbane, CA

4.6 avg. star score from 545 Verified Customer Phone Survey Responses

(Reviews: Scroll down to read them.)

Our surveys of only verified real customers produce the country’s most accurate ratings of local companies. Carol Flynn, Inc. scored Highest in Quality and Helpful Expertise and passed the credential-based checks to earn Diamond Certified.

A Star Equivalent Score is calculated for each verified customer rating by weighting the 1–10 Quality score, the YES/NO Loyalty (intent to return) score and the YES/NO Helpful Expertise score. If Helpful Expertise wasn’t surveyed or didn’t apply, it’s simply not shown.