AWC

Diamond Certified Company Report
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AWC
258 SURVEYS
10 CONSECUTIVE YEARS
SINCE SEPTEMBER 2016
CERT 2391

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258
Verified Customers
Surveyed
Customer Loyalty
Customer Satisfaction
Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation

Company Report Menu

  • Survey Responses (reviews)
  • Diamond Certified Video Player
  • Researched Articles & Profile
  • Capabilities
  • Photos
  • Expert Contributor Advice & Tips
  • Website & External Feeds

Diamond Certified Company Report SUMMARY UPDATE September 2025

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AWC

Rated Highest in Quality and Helpful Expertise for 10 Consecutive Years.

Quick Summary

  • Diamond Certified since 2016
  • Cleans air ducts, dryer vents, windows, and gutters for residential and commercial clients in San Mateo County and San Francisco
  • Offers free estimates
  • Member of the International Window Cleaning Association (IWCA)

Top News Updated

COMPANY MILESTONES

AWC is celebrating its 79th anniversary in 2025.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They do good work and they’re pleasant to deal with. They’re [also] good about scheduling appointments in the near future, so they have reasonable availability.

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From a recent Diamond Certified Survey Response: “Ron and Carol are fantastic. [If] they give a timeframe and they can’t make it, they’ll call and let you know immediately. They’re so friendly and upfront with everything, and they haven’t raised their prices a lot since we started. I’ve been very happy with them.”

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Trending Projects

AWC recently completed a dryer vent and chimney vent cleaning project for a homeowner in San Francisco. The client said the company’s technicians exceeded her expectations, even cleaning her skylight...

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AWC
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AWC

Air Duct Cleaning
|
San Francisco  San Mateo  Santa Clara Counties
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258 SURVEYS
10 CONSECUTIVE YEARS
SINCE SEPTEMBER 2016
CERT 2391

Rated Highest in Quality & Helpful Expertise Performance Guaranteed

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Diamond Certified Researched Articles on AWC

researched article

AWC uses the newest equipment from Rotobrush to clean its customers’ air ducts.

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AWC cleans air ducts, dryer vents, windows, and gutters for residential and commercial clients in San Mateo County and San Francisco. The family-owned and operated company utilizes a variety of state-of-the-art cleaning equipment to complete jobs quickly and efficiently, and it also offers pressure washing services and is available 24/7 to answer customers’ calls.

Co-owner Carol Frediani says much of AWC’s seven decades of success can be attributed to its customer-oriented approach to cleaning. “This company was established in 1946, so we’ve spent many years developing a reputation for always being there for our clients. They know they can call us any time and we’ll be ready to help them with their cleaning needs, and they really appreciate that.”

AWC maintains a staff of highly skilled and experienced technicians, all of whom are trained to perform work that adheres to the company’s high standards. “We’re very particular about the people we hire,” affirms co-owner Ron Frediani. “Every technician we send to a customer’s home is polite, responsive, on time and professional. Regardless of what a client throws their way, they respond with cheer and get it done.”

(L to R) Owners Ron, Carol and Joe Frediani-AWC
(L to R) Owners Ron, Carol and Joe Frediani

Diamond Certified Researched Capabilities on AWC

Service Area

serving area
San Mateo County
San Francisco
Serving San Mateo County and San Francisco

Main Services

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
12:00 am - 11:59 pm
Tue
12:00 am - 11:59 pm
Wed
12:00 am - 11:59 pm
Thu
12:00 am - 11:59 pm
Fri
12:00 am - 11:59 pm
Sat
12:00 am - 11:59 pm
Sun
12:00 am - 11:59 pm
Closed
Contact
AWC

Capabilities Table

Company Name
AWC
Managers
Ron, Carol and Joe Frediani, Owners
Years in Industry
58 (Ron Frediani), 26 (Carol Frediani), 20 (Joe Frediani)
# of Employees
7
Memberships
Independent Maintenance Contractors Association, International Window Cleaning Association (IWCA), Millbrae Chamber of Commerce, San Bruno Chamber of Commerce
Founded
1946
Payment Accepted
american express,
discover,
mastercard,
visa

Key Factors

Select Photos From AWC

1 of 11Picture of AWC technician Adrian learns how to maneuver a lift at the Cresco lift certification program. - AWC
AWC technician Adrian learns how to maneuver a lift at the Cresco lift certification program.
Picture of AWC technician Adrian learns how to maneuver a lift at the Cresco lift certification program. - AWC
Picture of AWC technician Eduardo rinses gutters to make sure the downspouts are functioning properly. - AWC
Picture of Co-owner Carol Frediani and technician Adrian volunteer at the Millbrae Art and Wine Festival. - AWC
Picture of A look at the difference between dirty solar panels (on the left) and clean solar panels - AWC
Picture of A "before, during, and after" shot of AWC technician Kelvin buffing out a glass door etched with graffiti - AWC
Picture of A "before and after" shot of a dryer vent cleaning job - AWC

Diamond Certified Expert Contributor Advice & Tips

Ron Frediani is the second-generation owner of AWC, a Diamond Certified company. He can be reached at (650) 273-5410 or by email.

Ron Frediani is the second-generation owner of AWC, a Diamond Certified company. He can be reached at (650) 273-5410 or by email.

Ron Frediani: Capable Expansion

By James Florence, Diamond Certified Resource Reporter

MILLBRAE — As second-generation owner of AWC, Ron Frediani hasn’t just maintained his family’s company—he has also managed to expand upon its capabilities. “My dad and uncle started AWC in 1946 and I started working for them in 1965,” he remembers. “Over time, we’ve branched out from mainly doing window cleaning to providing services like gutter cleaning and power washing. About 12 years ago, we added air duct cleaning to our repertoire. ...

Read Full Article - Ron Frediani: Capable Expansion

AWC Website and External Feeds

Website

FAQs
By AWC

AWC Ratings and Survey Responses (reviews)

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AWC
258 SURVEYS
  • 4.8
  • star image
  • star image
  • star image
  • star image
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10 CONSECUTIVE YEARS
SINCE SEPTEMBER 2016
CERT 2391

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
AWC

Based in Millbrae, CA

4.8 avg. star score from 258 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. AWC 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.