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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

Pat Martinez is owner of West Coast Mechanical, a Diamond Certified company. He can be reached at (831) 241-5070 or by email.

Pat Martinez

diamond certified contributor profile and expert article

Pat Martinez: Service-Oriented

By James Florence, Diamond Certified Resource Reporter

LIVERMORE — After years working on the outskirts of the HVAC industry, Pat Martinez decided to venture further in, not realizing just how far those first few steps would eventually take him. “I used to work as a warehouse manager for a supplier of HVAC air filters,” he recounts. “At a certain point, I was feeling tired of managing people and wanted to do something a little more hands-on. I saw these HVAC technicians coming into the warehouse every day and I figured, ‘Why not try that?’ I ended up getting into the union and becoming an apprentice. The funny thing is, soon after I started, my boss basically put me in charge and had me running jobs, so I fell right back into managing people. I guess it just came naturally to me, and he must have seen that.”

After 14 years working for the same company, Pat came to a crossroads that would alter his career’s trajectory. “The company owner was moving toward the construction side of things, whereas my interest was more service-oriented. I had a decision to make: I could stay on and keep moving in that direction or go off on my own. In the end, I chose the latter. I started my own HVAC service company in 2016 and haven’t looked back.”

Today, as owner of West Coast Mechanical, Pat says his favorite part of his job is making customers comfortable. “Most people come to us when their heaters or air conditioners aren’t working and they’re uncomfortable in their homes. Naturally, when we get their systems working again, they’re really happy, so we get a lot of joy from that.” 

A resident of San Jose (where he lives with his wife, Georgina), Pat spends his time outside of work on a variety of active pastimes. “I enjoy outdoor activities like camping and boating,” he details. “Vacations are always nice when we can get them in. I like traveling to new places, seeing new things and having new experiences.” Pat also likes spending time with his three adult children. “Georgina and I have two sons, both of whom are in the HVAC trade, and one daughter. Even though they’re all out of the house at this point, we still get together for Sunday dinners a couple of times a month.”

In his life and career, Pat espouses a simple philosophy. “You have to work hard if you want to play hard,” he says. “In order to enjoy the finer things in life, you need to work hard for them. Nothing comes easy, but if you put in the hours, things will pay off in the long run.”

When asked the first thing he’d do if he were to retire tomorrow, Pat says he’d see the world. “I’d like to travel abroad—that’s something I haven’t done a lot of. There’s a lot a world out there full of beautiful things to see, so if I had the time and money, I’d definitely go see them.”

Ask Me Anything!

Q: What was your first job?

A: I was a paperboy when I was 11 years old. My first job as an adult was at a welding shop.

Q: What’s your favorite sports team?

A: The San Francisco 49ers.

Q: If you could travel anywhere in the world, where would you go?

A: Probably Italy.

Q: What’s your favorite holiday? 

A: It’s a tie between Thanksgiving and Christmas because I enjoy the family get-togethers.

Q: What do you like on your pizza? 

A: Just about everything.

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Understanding HVAC Maintenance


LIVERMORE — You’ve probably heard that HVAC maintenance is important, but you may not know why it’s important or what exactly it consists of. To provide further insight, here’s some basic information on HVAC maintenance. Why is HVAC maintenance important?… Read more

Expert Video Tip

Video: Benefits of HVAC Maintenance

Complete Video Transcription:

LIVERMORE — Pat Martinez: Why is HVAC maintenance important? It lowers your utility bills. It extends the life of your system. You'll have healthier air… 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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