NEW 2026 Diamond Certified Local Experts Calendar
Each calendar features tips from owners of top rated Diamond Certified companies. These Diamond Certified Expert Contributors give consumers short and effective tips to improve their home, auto, and health.
PETALUMA, Calif., Nov. 24, 2025 /PRNewswire/ — American Ratings Corporation (ARC) has released its annual Diamond Certified Local Experts Calendar for the 2026 calendar year. Every month features helpful tips from Diamond Certified Expert Contributors, highlighted holidays and important events, trending topics from diamondcertified.org, and more. Here’s an example of one of the hundreds of expert tips you’ll find inside:
Kyle Barnhart
Owner, Mike Testa Plumbing, Inc.
Tankless Water Heater Maintenance
To prevent blockages caused by sediment and mineral buildup, tankless water heaters need to be annually flushed with a descaling solution. Tankless water heaters also have air and water filters that require routine cleaning to maintain an uninhibited flow of combustion air and water throughout the unit.
The 2026 Diamond Certified Local Experts Calendar is sent for free to thousands of Diamond Certified Preferred Members throughout the Greater San Francisco Bay Area. Diamond Certified companies also receive copies to hand out to their favorite customers, which reinforces their status as helpful local experts who truly care about their communities.
Diamond Certified Means the Company Scored Highest in Quality and Helpful Expertise
Being a helpful local expert is actually part of the requirements to earn Diamond Certified. Diamond Certified Resource, the source for consumers who love quality local companies, surveys by telephone a large, random sample of only verified real customers to determine whether a company is good enough to earn Diamond Certified. Most companies can’t pass the rating. In these surveys, customers are asked about various elements of their experience with the company, including the quality and Helpful Expertise they received throughout the process. Thus, the meaning of the Diamond Certified rating is High Quality + Helpful Expertise.
“We’re excited to release our 2026 edition of our popular Diamond Certified Local Experts Calendar,” says Greg Louie, CEO of ARC, the creator of Diamond Certified Resource. “It’s old-school, beautifully printed to hang on your wall and check throughout the year. Local experts helping local consumers is what this calendar is, and at its essence, that’s what Diamond Certified Resource is, too.”
Here are the newly released Diamond Certified Company Report SUMMARY UPDATES.
A1 Performance Auto Repair
Ace’s Garage Door Repair & Installation
Alley Cat
Alltek Restoration, Inc.
Alternative Heating & Air Conditioning Solutions, Inc.
AutoShield Collision
Cook’s Kitchen & Bath, Inc.
Degree HVAC, Inc.
Door Pros, Inc.
Duggan’s Serra Mortuary
Enviro Heating & Air Conditioning, Inc.
Evenich Construction, Inc.
Falcon Roofing
FixEm Appliance Repair
Four Paws Pet Ranch
Gar-Cal Corporation
Hometown Heating & Air Conditioning
Ongaro & Sons
Perfect Star Heating and Air Conditioning
PRI-Premiere Roofing Inc.
SF Craftsman, Inc.
Sheila Santwani Real Estate
Wise Builders Remodeling, Inc.
It’s easy to find top rated companies in the San Francisco Bay Area and Other Areas on Diamond Certified Resource.
Alameda County
Contra Costa County
El Dorado County
Fresno County
Los Angeles County
Marin County
Milwaukee County
Monterey County
Napa County
Orange County
Placer County
Sacramento County
San Benito County
San Francisco
San Joaquin County
San Mateo County
Santa Clara County
Santa Cruz County
Solano County
Sonoma County
Yolo County
Yuba County
About American Ratings Corporation
American Ratings Corporation (ARC), the creator of Diamond Certified Resource, the source for consumers who love quality local companies, rates local companies by surveying only their verified real customers to produce the country’s most accurate ratings of local companies. It also creates deeply researched company reports and consumer guides that give consumers the best companies plus the best advice for choosing a local Auto, Home, Health or Personal service type of company.
Only companies rated Highest in Quality and Helpful Expertise® earn Diamond Certified and are backed by their Performance Guarantee. All their deeply researched reports and guides are available for free at diamondcertified.org. They also produce an annual, full-color, printed Diamond Certified Directory with 840,000 copies published in 9 geographic zones in the Greater San Francisco Bay Area. Each April, these are mailed for free to their 182,000 Diamond Certified Preferred Members and selected homeowners and companies.
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SOURCE American Ratings Corporation
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