Contra Costa &ndash; Air Conditioning, Heating &amp; Ventilation (HVAC)

(925) 456-4989

Serving Sonoma, Napa, Solano, Marin, Contra Costa and San Francisco Counties

Services include HVAC installation & repair, heat pumps, air conditioning service, heater repair and HVAC system evaluations. Brands include Trane... License 740999 | DCID7073484101

Service Champions

7020 Commerce Drive, Suite E
Pleasanton, CA 94588

4430 Yankee Hill Rd, Suite 100
Rocklin, CA 95677

(925) 444-4444

(916) 777-4444

(408) 777-9444

Serving all of Contra Costa and Alameda counties including Concord, Antioch, Richmond, Walnut Creek, Fremont, Oakland, Berkeley and Hayward.

Services include HVAC equipment sales, furnaces, air filtration systems, thermostats, duct work, indoor air quality testing and home AC. Brands include York, Trane and GE... License 817040 |

Haddon Heating & Cooling

1850 Bates Avenue, Suite A
Concord, CA 94520

(925) 521-1380

Serving all Contra Costa, Alameda, Solano and San Mateo Counties

Services include air conditioning service, HVAC repair, commercial HVAC service and heating and cooling systems. Brands include Honeywell, Rheem, Trane... License 855456 |

Moore Mechanical, Inc.

6575-D Trinity Ct.
Dublin, CA 94568

(925) 837-3321

Serving all of Contra Costa and Alameda counties including Concord, Richmond, Antioch, Danville, Walnut Creek, Oakland, Fremont, Berkeley and Hayward.

Services include air duct cleaning, HVAC repair and installation, heat pumps, furnaces and air conditioners. Brands include Carrier, Trane and York... License 785008 |

Map of these Diamond Certified companies

Cities: Antioch, Brentwood, Clayton, Concord, Danville, El Cerrito, Hercules, Lafayette, Martinez, Moraga, Oakley, Orinda, Pinole, Pittsburg, Pleasant Hill, Richmond, San Pablo, San Ramon, Walnut Creek

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Search Diamond Certified Companies

Researched Articles

Why Trust Diamond Certified HVAC Companies Rated Highest in Quality?

An HVAC contractor repairs a residential air conditioning unit.

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.

How to Choose

How to Find a Good Contra Costa County Heating and Cooling Contractor

You'll get the most benefit from your new HVAC system when the furnace and air conditioner are properly sized for your home and your personal preferences. Customized heating, cooling and ventilation systems run more efficiently and can keep your home more comfortable year-round. ...

The best HVAC contractors in Contra Costa County will give you an estimate based on your needs and the square footage of your home. Most will want to see your existing heater and air conditioner before giving you an estimate for new heating and cooling systems, giving you a chance to meet with the contractor in person before signing a contract with them.

Remember, the heating and cooling contractor you choose will be working in and around your home and will have a direct impact on the effectiveness of your new heating and air conditioning system, so make sure you feel comfortable with the company you choose. If cleanliness, friendliness and honesty are important to you, verify that the HVAC company you interview fit these descriptions, and that their employees are held to a high standard.

Choose HVAC Contractors to Install the Best Heating and Air Conditioning Equipment
Good heating, cooling and ventilation systems are an investment. So it's important to hire an HVAC contractor who installs the best heating and cooling systems on the market. Heating and cooling equipment is becoming more complex, so the best HVAC companies will have educated technicians who are skilled at HVAC installation and heating and cooling system repairs. These technicians should be able to answer all of your questions about performance and efficiency. They should also be able to walk you through the range of brands and types of systems to help you make the best choice in a new heating, cooling and ventilation system for your home or business.

Simply buying good HVAC equipment made by the best hearing and air conditioning manufacturers isn't enough. Your HVAC installer needs to know how to install the equipment the right way. Systems that are installed by professional heating and cooling companies may perform better, last longer and be more energy efficient than systems installed by amateur installers.

In fact, some local HVAC contractors are authorized distributors and HVAC installers that have earned certifications from leading heating and air conditioning equipment manufacturers. Many of these cooling and heating companies can simplify the process for you by acting as salesman, contractor and follow-up service providers. Luckily, there are many Contra Costa County heating and air conditioning contractors to choose from, including those that serve the major cities of Concord, Antioch, Richmond, Walnut Creek and Pittsburg, as well as all the smaller towns such as Hilltop Mall, Lafayette, Point Richmond, Moraga, Port Costa, North Richmond, Kensington, Knightsen, Oakley, Pacheco, Pinole, Orinda, Port Chicago, Rheem Valley, Rodeo, Tara Hills, Vine Hill and Walnut Heights. If all-in-one service is important to you, ask the HVAC contractors you interview if they can provide all the services you need for the life of your home heating, cooling and ventilation system.

The Value of Further Research on Good HVAC Contractors in Contra Costa County Including those in the Larger Cities of Concord, Antioch, Walnut Creek, Richmond, Pittsburg, San Ramon, Brentwood, Danville, Martinez and Pleasant Hill

While it's best to choose a Diamond Certified HVAC company because they're rated Highest in Quality, that may not always be possible. If you're unable to choose a Diamond Certified heating and cooling contractor in your area, you can improve your chances of hiring a good heating and cooling company by checking out candidates on the Contractors State License Board website to ensure active license and workers' compensation insurance. Violations will appear on their license record, so you'll know about recent infractions or serious customer grievances that have been reported to the state.

Then verify furnace and air conditioner company credentials. HVAC contractors in the larger cities of Pittsburg, Walnut Creek, Antioch, Concord and Richmond who are members of local organizations and heating and cooling associations may offer better service, and you'll be able to see their past records, including complaints and legal action.

Choose the Contra Costa County HVAC Contractor for You
Now that you've done some initial research, talk with representatives from a few local heating and cooling companies. When you interview HVAC contractors, have a written list of questions and note the answers. Some cooling and heating contractors won't provide estimates over the phone without seeing the job first.

However, don't feel obligated to set an appointment for an in-home estimate if you weren't impressed with your initial contact with the HVAC company. If the local heating and air conditioning contractors you've talked with don't meet your expectations or can't answer your questions about your new air conditioner or furnace satisfactorily, it's your right to end the conversation and move on to the next high-quality heating and air conditioning contractor on your list.

Know What You Want

Know What You Want from Your New HVAC System

Before you interview any heating, cooling and ventilation system contractors in Contra Costa County, you'll want to have some knowledge about HVAC systems and your heating and cooling needs. Think about the answers to these questions to get you started in the right direction:...

Do I want a Diamond Certified company that is rated best in quality and backed by the Diamond Certified Performance Guarantee?
What is my budget for new HVAC system or heating and air conditioner repair?
What do I like about my current HVAC unit?
What would I change about the HVAC system that's currently installed in my house?
Are there any specifics that will make this job more complicated than average or need to be considered during the planning phase (i.e. planning an addition to the home, special requests for the brand or type of system installed, location of the job site or a narrow driveway that may make it hard for work trucks to get to the home, a short timeframe, etc.)?
Do I plan to live in this home long-term? Or is it a rental property or a house I plan to sell?
What qualities or characteristics do I want in a Contra Costa County HVAC contractor?

What to Ask on the Phone

Interview Good Heating and Cooling Contractors in Contra Costa County

Once you've decided what you want from your new heating and cooling system, talk with a few local HVAC contractors in Contra Costa County and ask them a few questions. You'll get better results if you write down your questions and keep a record of the answers you get from each of the heating and cooling specialists you interview. The following are some sample questions to start the process.

Questions to Ask HVAC Companies Over the Phone...

Questions to Ask HVAC Companies Over the Phone

Has your company earned and maintained a Diamond Certified rating?
Are you a licensed heating and cooling contractor in Contra Costa County?
What is your state license number?
Do you have liability and workers' compensation insurance?
Are all of your employees covered by your insurance while they're working in my home?
Are you and your employees certified by the EPA to handle Freon refrigerant gas? (This is a legal requirement in the state of California.)
What is your specific experience with new HVAC installations?
I live in _____ (Concord, Richmond, Walnut Creek, San Ramon, Brentwood, Antioch, West County, etc.). Do you charge for local estimates?
If I live in a smaller town such as Antioch, Blackhawk, West Pittsburg, Diablo or Briones, will there be an additional service charge to come to my house?
How do you determine the correct heating and cooling system size? Do you use computerized sizing calculations to ensure my new home heating and air conditioning system is the right size?
Does this HVAC installation or repairs require a permit? If so, will you get the permit, or will I have to get it?
Is there a specific HVAC system brand you recommend (Bryant HVAC systems, Amana Heating & Cooling system, Carrier furnaces, Trane furnaces, York Heating & Cooling, Lennox furnaces, etc.)?
How long has the manufacturer been making the furnaces and air conditioners you install? (A lifetime warranty is worthless if the manufacturer goes out of business.)
Are you authorized by the manufacturer to install new HVAC systems (such as a General Electric Furnace Certified Installer, Certified Kenmore Air Conditioner Installer or Certified Armstrong Heating & Cooling Installer)? Remember: Installation by unapproved contractors could void your manufacturer's warranty.
What guarantees and warranties do you offer on your workmanship and on the air conditioners and heaters?
How long have you been an HVAC contractor in Contra Costa County?

What to Ask References

Previous Customers' Experiences with Local Window Contractors in Contra Costa County

It's best to choose a Diamond Certified heating and cooling contractor because all certified companies have passed an in-depth ratings process that most other companies can't pass. If you want quality from a HVAC contractor in Contra Costa County and the greater Bay Area, you can have confidence choosing a Diamond Certified company. Diamond Certified reports are available online for all certified companies. And you'll never be fooled by fake reviews....

If you can't find a Diamond Certified HVAC company within reach, you'll have to do some research on your own. If you do, it's wise to call some references provided by the heating and air conditioning companies. Keep in mind, though, that references provided to you by the contractors are not equal in value to the large random sample of customers surveyed during the Diamond Certified ratings process. That's because references given to customers from local HVAC companies are often cherry-picked instead of randomly selected from all their customers. So the contractors will likely give you a few customers to call that they know are satisfied.

If you do call references on your own, specifically ask for a list of the company's 10 most recent customers. This will help avoid them giving you the names of only customers they know were satisfied. Then call several of the references and ask them specific questions about the heating and air conditioning contractor you're considering. Here are a few sample questions:

Were you satisfied with the HVAC installation and the customer service from _(HVAC company name)_?
What type of job did they do for you (HVAC repair, cooling & heating installation, residential air conditioning service, HVAC unit replacement, furnace repair, etc.)?
Did the Contra Costa County heating and cooling contractor you hired complete the work on time?
Did the contractor keep you up-to-date on the status of the project?
Were there unexpected costs? If so, what were they for and were they avoidable?
If you live in a smaller town such as Alamo, Bay Point, Canyon, Pinole, Cowell, Bethel Island or Diablo, did the HVAC company charge extra to travel to your home?
Did the HVAC installers show up on time?
Did they clean up after installing your new furnace or air conditioning system?
If you need a new furnace or HVAC repairs in the future, would you use this contractor again?
Would you recommend them to friends or family?

How to Work With

Get the Most Value from Your New HVAC System

Most homeowners want the best value from their new HVAC system. But sacrificing quality to save money on a new heating and cooling system may defeat the long-term value you can get from a high-quality, efficient HVAC system installed by experienced and skilled heating and air conditioning professionals.

To help encourage good HVAC contractors in Contra Costa County to bid on your job, remember:...

To help encourage good HVAC contractors in Contra Costa County to bid on your job, remember:

Look for good value, not just the lowest price. The first question most homeowners ask heating and cooling companies is how much their new furnace and air conditioner will cost, so it's important to show them you understand the significance of quality products, skilled installation and long-term value.
Be upfront with heating and cooling companies if you're interviewing other local HVAC contractors, but assure them that you're accepting three fair bids, not dozens of lowball bids.
Shop among local heating and cooling companies in Contra Costa County. Most HVAC installers like to work in the local area because it allows them to provide better service in a more timely manner. Shopping locally shows contractors you're not looking for cheap HVAC installations, as some fly-by-night furnace and air conditioning services travel long distances to install discounted products that local contractors may not be able to compete with price-wise.
Take the long view when purchasing HVAC equipment. Investing in a quality system and having it installed by professional tradesmen can save you more money in the long run than buying a cheaper system or hiring discount HVAC installers.
Remember that the installation can be as important to the long-term reliability and functionality of your heating, cooling and ventilation system. Even the best systems require proper installation and maintenance to operate safely and at maximum efficiency.

Request a Written Estimate and Contract from Your Contra Costa County Heating and Cooling Specialist
When you've found a Contra Costa County heating and cooling company that meets all of your requirements, it's time to sort out the details. Ask for a written estimate and contract that includes a confirmation of the brand and quality of your new HVAC system, any installation details, the price of the system and the labor for installation, and any applicable warranties and HVAC maintenance agreements. You should also get in writing a timeline that details the job start date, major milestones and the expected final installation date.

You may also write in any additional requests or items you and the heating and cooling company representative verbally have agreed upon. Once you're happy with the contract and understand all the terms of the agreement, you can sign with confidence.

Check the Work

Review Your HVAC Service Invoice with Your Local Heating and Cooling Contractor

Once your HVAC system is installed, your heating and cooling professional should supply you with a written invoice. This invoice generally will list:...

Once your HVAC system is installed, your heating and cooling professional should supply you with a written invoice. This invoice generally will list:

The name, physical address and license number of the heating and cooling contractor.
A list of all HVAC work performed.
An itemized list of the new furnace, air conditioner and ventilation system installed and any replacement parts needed.
The total heating and cooling unit installation cost, including an itemized amount due for labor.
Any applicable warrantees or guarantees.

Once you've reviewed the invoice, it's smart to compare the work that was actually done to the written document. Ask your cooling and heating contractor to show you the new system installation or HVAC repairs that were done. Check the products and work against the line-item invoice. This is also a good time to have the furnace contractor explain the HVAC unit to you in detail and show you the best steps to take in running and maintaining your new system. If you have questions about the work that was done or any items that seem to be missing or in conflict with your written contract or invoice, this is the time to ask your contractor.

Written Warranties

Ask Contra Costa County HVAC Contractors for Written Warranties and Care Instructions

Before your heating and cooling contractor leaves the job, confirm with them any warranties and guarantees you've agreed upon. Not all HVAC companies in Contra Costa County offer warranties on their work and products. But if the company you've chosen does, they should give you a written warranty that includes:...

The HVAC contractor's name and physical business address.
What heating and cooling products and work are covered, including whether the contractor will replace or repair your heating and cooling system or give you a refund if you place a warranty claim.
Your responsibility if you need warranty work or a replacement furnace or air conditioner (i.e., if you have to pay for labor when filing a claim for warranty work or pay a prorated amount).
Terms of and limitations on the new HVAC unit warranty.
If the new HVAC system warranty coverage is transferrable to the new owner if you sell your home.
Any exclusions to the warranty must be in writing.

You should also ask for written care and handling instructions for your new air conditioner and furnace, including when to change air filters and how to handle service issues. Knowing what steps you should take to preserve your unit can help keep it running and efficient for years to come.

Top 10 Requests

Top Service Requests Asked of Contra Costa County HVAC Contractors and Air Conditioner Repair Services

The most common air conditioning, heating and ventilation system repairs and services are listed below for your convenience. We've also included a list of the most popular brands of HVAC units available in Contra Costa County, including in the larger cities of Concord, Richmond, Antioch, Walnut Creek, Pittsburg, San Ramon, Danville, Brentwood, Martinez and Pleasant Hill and the greater Bay Area....

AC Repair (Air Conditioner Repair)
Contra Costa County HVAC contractors perform residential air conditioner repairs to fix broken AC units, replace failing air conditioner parts, upgrade air conditioners with new parts that are more energy efficient and prepare AC units for seasonal use.

Heater Repair (Furnace Repair)
As with home air conditioner repairs, home heater repairs upgrade old furnace parts, repair broken furnaces, replace failing heater parts and make old heaters more energy efficient for winter home heating. Heater repair technicians can also check for dangerous furnace emissions, such as carbon monoxide, and can fix any potential leaks.

Furnace Installation
New furnaces can be installed by local Contra Costa County heating and cooling companies. Furnace installers may put in stand-alone furnaces, or can install a new furnace as part of a home heating and cooling system. In order to get the best results and ensure the safety of your new home heater, furnace installation should only be done by an experienced professional.

HVAC Unit Installation
HVAC unit installation is a complicated process involving determining which size of heating and cooling equipment is needed, which brand and model of HVAC unit is best for your needs, detailed installation methods to keep air conditioner and furnace warrantees intact, and the actual installation process which must be done correctly in order to preserve the safety and integrity of the equipment. Experts recommend that HVAC equipment, including air conditioners, heaters, home ventilation systems, boiler systems and furnaces, should be installed by professional HVAC installation companies.

Heating and Air Conditioning Unit Repairs
Air conditioning and heating unit repairs include repairs to the heating and cooling elements, air intake, fans and* mechanical components of HVAC units.

Home Ventilation System Installation & Repair
Home ventilation system installation and repairs in Contra Costa County deal with the air intake vents, exhaust fans, home ventilator, air ducts and ventilation system controls. Some ventilation systems are integrated with heating and cooling systems while others are stand-alone ventilation systems. Residential ventilation systems remove stale air from the home, bring in fresh air from outside, and move the air around inside the home.

Energy Star HVAC Systems
Energy Star HVAC systems sold in Contra Costa County are heating and cooling units that are Energy Star certified. Energy Star is labeling system designed by the US Environmental Protection Agency and the US Department of Energy. Energy Star heating and cooling systems, air conditioners, furnaces, boilers and other home comfort systems are extensively tested to ensure high efficiency standards.

Portable Air Conditioning Units
Often seen as window air conditioners or compact air conditioners on wheels, portable air conditioning units are small, movable AC units that are not permanently installed and can be moved from room to room.

Central Air Conditioner Installation
Central air conditioners are cooling and dehumidifying systems that work from a central location in a home or business to distribute cool air throughout the building. Central air conditioners are often installed together with central heating furnaces and are known as HVAC units.

Residential Heating and Cooling System Installation
Contra Costa County HVAC companies offer installation of* residential heating and cooling systems. Installation generally includes removal of old HVAC equipment, installation and custom fitting of new heating and cooling components.

Top 10 Brand Requests for HVAC Equipment in Contra Costa County

Trane Air Conditioning Units
Carrier Furnaces & Air Conditioners
Goodman Air Conditioners
Air Con Systems
Frigidaire Air Conditioners
Mitsubishi Air Conditioners
Bryant Furnaces
Amana Air Conditioning & Heaters
Lennox Air Conditioning & Furnaces
Kenmore Air Conditioners & Heating Units

If Things Go Wrong

The Diamond Certified Performance Guarantee

Diamond Certified HVAC installation contractors are backed by the Diamond Certified Performance Guarantee. If the Contra Costa heating and cooling company you've hired is Diamond Certified and you can't resolve the issue by talking with the owner, contact the mediation department at info@diamondcertified.org or call 800-738-1138....

How to End Conflict with Contra Costa County Heating, Cooling and Ventilation Contractors
By carefully vetting and choosing a good HVAC contractor in Contra Costa County, you can avoid many of the common problems that other consumers can encounter. But it's important to know your rights and options if something does go wrong.

When facing a problem with your heating and cooling company, remember these points:

The most direct route to a positive solution is to resolve the problem directly with your heating and cooling contractor. Talk to your HVAC company contact as soon as your complaint or question arises. Don't wait until the work is done to share your concerns.
Look over the contract in person with your HVAC installer and try to come to a verbal agreement on a solution.
Tell your HVAC contractor that you're willing to agree on a mutually-beneficial solution. Set a deadline with your heating and cooling professional for resolution of your disagreement.
Document your complaint or concerns in writing. Take photos if your concern lies in quality of the heating and cooling unit or workmanship.

If you still cannot get a satisfactory resolution to your conflict, you may have to resort to the following steps:

Consider calling a local building inspector or hiring an HVAC industry expert in Contra Costa County to evaluate your complaint, the materials and workmanship from a neutral viewpoint.
You may file serious grievances with the Contractors State License Board.
You may legally withhold payment until you've resolved your dispute with your HVAC contractor.
If your complaint is serious enough to warrant pressing charges for damages or reimbursement, contact the office of the state attorney general.