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Why Trust Diamond Certified HVAC Companies Rated Highest in Quality?

SEASIDE — You are the customer. If your goal is to choose an air conditioning, heating and ventilation contractor that will deliver high customer satisfaction and quality, you’ll feel confident in choosing a Diamond Certified HVAC contractor. Each has been rated Highest in Quality in the most accurate ratings process anywhere. And you’re always backed by the Diamond Certified Performance Guarantee. Here’s why the Diamond Certified ratings and certification process will help you find a top-rated HVAC company and is unparalleled in its accuracy, rigor and usefulness:

1) Accuracy: All research is performed by live telephone interviews that verify only real customers are surveyed, so you'll never be fooled by fake reviews.

2) Statistical Reliability: A large random sample of past customers is surveyed on an ongoing basis so the research results you see truly reflect a Diamond Certified company’s top-rated status.

3) Full Disclosure: By clicking the name of a company above you'll see the exact rating results in charts and read verbatim survey responses as well as researched articles on each qualified company.

4) Guaranteed: Your purchase is backed up with mediation and the Diamond Certified Performance Guarantee, so you can choose with confidence.

Click on the name of a Diamond Certified company above to read ratings results, researched articles and verbatim customer survey responses to help you make an informed decision.

More than 200,000 customers of local companies have been interviewed in live telephone calls, and only companies that score Highest in Quality in customer satisfaction–a 90+ on a 100 scale–as well as pass all of the credential-based ratings earn Diamond Certified. By requiring such a high score to qualify, the Diamond Certified program eliminates mediocre and poorly performing companies. Read detailed information about the ratings and certification process.

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DIAMOND CERTIFIED EXPERT CONTRIBUTORS IN THE San Benito County – Heating, Air Conditioning & Ventilation (HVAC) CATEGORY

David Hazel is managing partner at smart72 Inc., a Diamond Certified company since 2014. He can be reached at (877) 312-4191 or by email.

David Hazel

diamond certified contributor profile and expert article

David Hazel: Double Impact

By James Florence, Diamond Certified Resource Reporter

ANTIOCH — A decade after retiring from the police force, David Hazel has continued to make a positive impact on his community, most notably through a career in the HVAC field. “I was a police officer in the Bay Area for 11 years,” he says. “After retiring in 2007, I wanted to get into a new vocation where I could help people, and the residential service industry seemed like a great fit. I started as an installation manager with a local HVAC company and eventually moved upward in management positions. When I met Jason Devries, we found that we shared the same vision and desire to provide the best customer experience possible. Working together, we made our vision a reality by building our own HVAC service company.”

Today, as managing partner at smart72 Inc., David says his two favorite things about his job are working with customers and watching his employees grow in their careers. “Having the chance to get to know our clients and learn from them is second to none. I also really enjoy working with our team members. Being able to provide great lives for them and their families is something that motivates me every day.”

A resident of East Contra Costa County, David expresses his appreciation for life and work in the Bay Area. “The Bay Area is one of the best places to live in the world. In particular, I think the diversity of people living and working together makes this a special place to live and raise a family.”

Outside of work, David likes to extend his positive impact by coaching youth sports like football and baseball. He also enjoys spending time with his wife, Melinda, and their two children. “One our favorite spots to go as a family is Lake Tahoe,” he says. “We relax on the beach, go on hikes and just enjoy the natural beauty around us.”

In regard to his professional career, David espouses the value of great customer service. “I think you should treat your customers the same way you’d treat your friends and family,” he affirms. “I like to repay my positive experiences with our customers by providing them with effective, affordable HVAC solutions. Basically, my goal is to make a new friend on every service call.”

When asked the first thing he’d do if he could retire tomorrow, David says he’d devote more time to coaching. “I would get more actively involved in youth sports, as well as the Special Olympics. I’m not the kind of person who can just sit around and relax—I like to stay busy and be impactful in one way or another.”

Ask Me Anything!

Q: What are your favorite sports teams?
A: The Seattle Seahawks and the Oakland Athletics.

Q: What’s your favorite season?
A: Winter. I love the cold air and the holidays. Our house is often referred to as “the Griswold house” during the holidays because of our lighting display.

Q: What’s the best gift you’ve ever received?
A: My wife, who blessed me with her hand in marriage and gave me two beautiful children.

Q: What’s your favorite snack?
A: Ginger snaps.

Q: Do you collect anything?
A: Baseball cards.

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The Impact of Ducting on HVAC Efficiency


ANTIOCH — Many homeowners think buying a top-of-the-line HVAC system will save them a lot of money on their energy bills, but this isn’t necessarily the case. The problem here is the assumption that energy efficiency is strictly related to the… Read more

Expert Video Tip

Video: Impact of Ducting on HVAC Efficiency

Complete Video Transcription:

ANTIOCH — Host, Sarah Rutan: When it comes to improving HVAC system efficiency, one crucial area to address is the ducting. Today we’re in Antioch with Diamond… Read more



INDUSTRY INFORMATION - San Benito County – Heating, Air Conditioning & Ventilation (HVAC)
  • Carrier

  • Rheem

  • Trane

  • Lennox

  • Mitsubishi

  • Amana

  • Bryant

  • Ares

  • First Air

  • Goodman

Know What You Want
FAQ About Local Heating and Cooling Services

Q: Why choose a Diamond Certified HVAC company?

Q: Why choose a Diamond Certified HVAC company?
A: Diamond Certified helps you choose a local heating and cooling contractor with confidence by offering a list of top-rated local companies who have passed the country’s most in-depth rating process. Only furnace and air conditioning companies rated Highest in Quality earn the prestigious Diamond Certified award. Most companies can’t pass the ratings. American Ratings Corporation also monitors every Diamond Certified company with in-depth and ongoing research and ratings. And your purchase is backed by the Diamond Certified Performance Guarantee. So you’ll feel confident choosing a Diamond Certified heating and cooling company.

Q: How do I know when it’s time to replace my old HVAC equipment?
A: Only a thorough examination from a good heating and cooling contractor will tell you for sure if you need a new home comfort system, but there are a few tell-tale signs that it may be time to replace your HVAC unit:

  • If your furnace, boiler, heat pump, air conditioner or HVAC system is more than 10-15 years old, you may want to consider replacing it with a newer, more energy efficient system.
  • If your HVAC equipment needs frequent repairs, doesn’t seem to be heating and cooling your home as well as it used to, or your energy bills are going up.
  • Sudden humidity problems in your home may be a sign of a poorly-operating HVAC system or heating and cooling equipment failure.
  • Your HVAC system is very noisy when it runs or seems to be struggling to keep up with your heating and cooling needs. This could signal an undersized system or an underperforming HVAC unit.
  • Excessive dust can be a sign of leaky HVAC ducts.

Q: Some rooms in my house are too hot while others are too cold. What could be causing this?
A: Rooms that are too hot or too cold can be caused by duct work problems, poor home insulation, inefficient HVAC equipment or a failing heating and cooling system. You should call a qualified heating and cooling contractor for a home energy audit and a check of your HVAC system. A good HVAC contractor should be able to determine what is causing the temperature fluctuations and tell you the best way to fix the problem.

Q: How often should I have my home HVAC system serviced?
A: Most HVAC companies recommend having your heating and air conditioning equipment checked at least once a year. Some companies advise having a qualified HVAC technician test your heater/furnace in the fall and your air conditioning tested in the spring. HVAC servicing may help your system last longer and stay efficient because regular heating and cooling system maintenance can help locate problems and fix them before they cause an HVAC system failure, help your system run at peak performance and cut down energy costs, maintain healthy and safe operation, and can prolong the life of the furnace and air conditioner equipment.

Q: What features should I look for in a home heating and cooling system?
A: Home comfort systems come with many different features. Your heating and cooling specialist should help you determine which features are best for you, but you may want to spend some time thinking about what is important to you before selecting a home air conditioning unit and furnace. Some HVAC unit features you may wish to consider include home climate control devices such as programmable thermostats, HVAC system noise reduction units, cooling and heating units that preserve home air quality, and high efficiency equipment that helps save money and is better for the environment.

Q: Why should I consider an Energy Star furnace and air conditioner?
A: Energy Star HVAC systems are those that have tested as high efficiency in the Energy Star labeling system designed by the EPA and the US Department of Energy. Energy Star air conditioners, furnaces, boilers and HVAC units may offer better efficiency standards and lower operating costs and environmental costs than competing heating and cooling systems that are not Energy Star certified.

Q: How long will it take to replace my AC and furnace equipment?
A: The amount of time for installation depends on the size of your job, the work you’re having done and the experience level and detail of your heating and cooling contractor. It can take as few as one or two days to add on to an existing HVAC system and up to a week or more to install new furnaces and AC systems. Good contractors will take the necessary time to modify your new heating and cooling unit and ductwork to exactly fit your home.

Q: Do I really need to hire a local heating, cooling and ventilation contractor or can I just install my new HVAC system myself?
A: Poorly-installed HVAC systems can be more expensive to run, can wear out sooner than correctly-installed heating and cooling systems and can even pose a danger to your health. If HVAC systems are installed incorrectly, they can even leak toxic gasses into your home. So it’s important to hire a skilled, licensed HVAC contractor to install, service and inspect your home heating and cooling system. HVAC contractors who know how to do their jobs correctly will install systems without gaps in the ductwork, so systems are more efficient and last years longer than poorly-installed systems.

Q: What is the difference between an upflow furnace, downflow furnace and horizontal furnace?
A: These terms simply refer to how a furnace delivers air. An upflow furnace delivers hot or cold air upwards, pushing heated or air conditioned air up from the top of the furnace into an overhead HVAC duct system and then out through heater vents or air conditioning vents. A downflow furnace is the opposite, pushing air down through the bottom of the furnace and into the home duct system that runs beneath it. Horizontal furnaces, as the name suggests, lay on their side and push the cooled or heated air out into the ducts from a prone position. Horizontal furnaces are most often used in attics, basements or tight spaces because they maximize space.

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