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10 Best HVAC Companies in Union City, CA

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Written By Bradford Cuthrell

Last Updated February 2024

On average, American homeowners devote 55% of their home energy usage to heating and cooling, according to the Department of Energy. You don't want to spend more than necessary on temperature control in your Union City home, so it's important to make sure all systems are functioning properly.

We've assembled this guide to the top HVAC companies in Union City to help you choose the right person for your job and get your system into top shape.

Top 10 Best HVAC Companies in Union City

All About Air

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2415 Radley Ct Suite 8, Hayward, CA 94545 (510) 538-2247 allaboutaironline.com

Reliable customer support

Prompt service delivery

Informative resources

Clear pricing policy

Services Offered

Maintenance
Ac installation
Ventilation
Ductless
Indoor air quality
Ac repair
Furnace installation
Inspection

Contra Costa Heating & Air Conditioning

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14670 Wicks Blvd, San Leandro, CA 94577 (510) 343-9841 contracostaheating.com

Clear pricing policy

Reliable customer support

Informative resources

Free quote

Services Offered

Indoor air quality
Ac installation
Ventilation
Ac repair
Zoning systems
Furnace installation
Inspection
Furnace repair
Maintenance
Ductless
Filtration

AIS Heating & Air Conditioning

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4432 Enterprise St suite a, Fremont, CA 94538 (510) 518-3547 aisheatingandair.com

Reliable customer support

Clear pricing policy

Free quote

Informative resources

Services Offered

Ac repair
Indoor air quality
Maintenance
Ductless
Furnace installation
Ac installation
Furnace repair

Giant HVAC, Inc

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43012 Christy St, Fremont, CA 94538 (510) 624-4268 giant-hvac.com

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Reliable customer support

Prompt service delivery

Informative resources

Clear pricing policy

Services Offered

Maintenance
Ac installation
Ductless
Indoor air quality
Thermostat repair
Ac repair

Bay Area Climate Control

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1930 W Winton Ave # 4, Hayward, CA 94545 (510) 477-6793 bayareaclimatecontrol.com

Reliable customer support

Informative resources

Free quote

Clear pricing policy

Services Offered

Furnace repair
Ac installation
Ductless
Maintenance
Furnace installation

Precision HVAC Heating & Air Conditioning

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24932 Mead Way, Hayward, CA 94541 (510) 925-0450 precisionhvacnorcal.com

Clear pricing policy

Free quote

Reliable customer support

Services Offered

Maintenance
Ac installation
Ac repair
Indoor air quality
Ductless
Ventilation

Copeland Mechanical Inc.

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8040 Wells Ave Suite D, Newark, CA 94560 (510) 795-7216 copelandmechanical.com

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Prompt service delivery

Reliable customer support

Clear pricing policy

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Services Offered

Indoor air quality
Ac installation
Inspection
Maintenance
Emergency services
Ac repair

Art's Heating & Cooling

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1048 Serpentine Ln #314, Pleasanton, CA 94566 (925) 922-5505 artsheatingandcooling.com

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Reliable customer support

Services Offered

Inspection
Ac repair
Ventilation
Furnace repair
Maintenance

4 Seasons Heating & Air Conditioning

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2215 National Ave, Hayward, CA 94545 (510) 886-3112 4seasonsheat.com

Clear pricing policy

Free quote

Informative resources

Reliable customer support

Prompt service delivery

Services Offered

Ventilation
Ac installation
Maintenance
Ac repair
Emergency services

Comfort Energy, Inc.

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1465 N Milpitas Blvd, Milpitas, CA 95035 (408) 560-4050 comfortenergy.com

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Clear pricing policy

Prompt service delivery

Reliable customer support

Free quote

Services Offered

Indoor air quality
Boiler repair
Boiler installation
Filtration
Duct cleaning
Ductless
Furnace installation
Ac repair
Maintenance
Ac installation
Furnace repair
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

If your home's HVAC system isn't working correctly or getting old, you might need an HVAC contractor for maintenance or replacement. Look for these common signs that your system requires professional attention:

  • Refrigerant leaks
  • Unusually high energy bills
  • Poor air circulation or uneven heating/cooling
  • Corrosion, rust, or cracking
  • Frequent breakdowns and need for repairs
  • Temperature control issues or thermostat malfunctions
  • Strange noises when the system turns on
  • An HVAC system that's over 15 years old

If you see any of these HVAC issues, have a technician inspect your system. A local professional can detect problems and determine whether repairing or getting a new HVAC unit is the best solution.

Cost of HVAC Installation and Maintenance in Union City

The cost of HVAC installation or maintenance varies depending on the kind of unit you have. Common varieties of HVAC units include the following:

  • Split or mini-split: If your home lacks the right ductwork for central heating or air, you probably have a split HVAC system. Split or mini-split systems consist of internal units that regulate the temperature in individual rooms. These interior units are all connected to an outdoor unit.
  • Hybrid split: A hybrid split HVAC unit operates similarly to a regular split system. It gives flexibility by having the option to use either electricity or gas for energy.
  • Heat pump: Heat pumps move warm and cool air between your home and the outside. These systems don't make their own heat or AC, so they work more efficiently in moderate climates and may not be as effective during Union City's hot summers.
  • Packaged heating and air: Packaged HVAC systems are a good choice for smaller houses. They have a single heating and cooling unit, usually in an attic or basement. This unit is often space-saving, cost-effective, and easy to maintain.

HVAC maintenance prices vary based on the work needed. HVAC systems are complicated and may need a number of types of maintenance. Prices for common jobs are as follows:

HVAC Unit Type Cost
Split $2,094-$5,338
Hybrid Split $4,243-$7,817
Heat Pump $3,285-$33,475
Packaged Heating and Air $275-$458

Ways to Save Money on HVAC Costs

Taking care of necessary HVAC repairs and replacements when needed is crucial, but can be costly. Luckily, there are actions you can take to reduce gradual wear and tear on your system.

  • Change the position of your blinds seasonally. Leaving your blinds open during the colder months allows passive solar heating to warm your home. Closing the blinds in warmer seasons helps prevent the heat from getting inside. Doing both helps lessen the demand on your HVAC system.
  • Keep your system clean. Keeping your grills, ductwork, indoor evaporator coil, and condenser fan blades clean helps your system run and reduces the chance of mold growth. The National Air Duct Cleaners Association recommends that you clean your HVAC system when it starts to look dirty.
  • Change filters regularly. Air flows most effectively through your HVAC system when you change out or clean the filters every 30–90 days. Also try not to let debris pile up on the outdoor parts of your HVAC.
  • Monitor for potential problems. Monitoring your system for issues — for example, by checking your thermostat and energy bills regularly — helps you get ahead of problems before they get too expensive.

Service Cost
Filter Replacement $69-$183
Condensor Cleaning $1,375-$4,124
Thermostat Repair $92-$229
Ductwork Cleaning $440-$1,100

How To Choose a Local HVAC Company

It's important to know what makes a good HVAC company. Working with a contractor that's properly licensed and highly experienced will give you confidence that they can keep your system running efficiently, providing you with effective air conditioning and heating for your home.

Compare Multiple Bids

Get quotes from three or more HVAC companies. Explain your issues and ask if specialists can inspect your system in person. Review each provider's diagnoses, recommended solutions, estimated cost, timeline, and warranties. Avoid companies that pressure you or demand payment before work.

Check Credentials

Choose an HVAC company with well-trained technicians who have proper licensing and experience. In all states, HVAC contractors have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, contractors must pass an exam (the type of exam depends on what kind of equipment they plan to work with). Section 608 certification is required for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." All other licensing requirements are handled by the state.

HVAC contractors in California must be licensed by the Department of Consumer Affairs Contractors State License Board (CSLB). HVAC contractors are considered specialty contractors by the CSLB. All contractors are required to have four years of experience and to be bonded, and contractors with employees must also meet insurance requirements. You should also check a provider's reviews and complaints with organizations such as the Better Business Bureau (BBB), Google Reviews, and Yelp. You'll want to select a provider with positive reviews and a history of good customer service.

Understand Work Details

Always make sure you understand what a company’s process looks like. When getting HVAC repairs, ask your provider to specify which parts require replacement and why. Confirm that your technician will clean and test the system at the end of the job to ensure proper operation. When replacing your HVAC system, ask the contractor to describe the new features, estimated installation time, model, brand, and energy efficiency. Before signing a contract, ask about the process your provider will use to properly size the new system for your home and how much it will cost.

Compare Warranties

Reputable HVAC companies back their work with warranties. Compare warranties from different companies, keeping in mind that more comprehensive coverage is better. Look for the provider that offers the most coverage for a fair price.

Get Quote in Writing

Get written quotes before beginning HVAC work. The quote should cover costs for both materials and labor. Review all terms carefully before signing.

Frequently Asked Questions About HVAC in Union City, CA

You should have your HVAC system inspected approximately twice yearly. Following an inspection, your technician will tell you what services are required. You should also have your system inspected if you notice new issues such as unusual smells, strange noises, or leaks. If your home has ductwork, it should be inspected every few years.

Usually, it's smart to schedule inspections in the spring and fall, as these times tend to be less busy. This also helps get your system ready for the summer and winter, when it probably sees the most use.

You can save energy during the summer by making it easier for your HVAC system to keep your home cool. Keep your thermostat temperature as close to the outside temperature as you comfortably can, and try to avoid making drastic changes in temperature all at once. Keep your roof in good shape and seal any leaks around your doors and windows to help keep cool air in. Similarly, make sure your attic is well ventilated to avoid trapping excess heat in your home.

Generally, HVAC installation or replacement takes between one and three days for the entire system. Installing or replacing a furnace or air conditioning unit can take as little as half a day or as much as two days. The exact amount of time will depend on factors like how large your home is, how easily accessible different sections are, and whether your technician runs into any problems.

For a 2,000-square-foot home, you should look for around 2.5 to 5 tons of air conditioning capacity. In Union City, you'll probably want to explore units on the higher end of this range. For homes over 1,000 square feet, central air will usually be more effective for cooling than window units.

For a 2,000-square-foot home, you should also look for a furnace that is between 50,000 and 80,000 BTUs (British thermal units). In Union City, you may be able to make do with a lower-capacity furnace.

Normally, HVAC financing is offered through a third-party lender. If your HVAC company doesn't offer these options, you might consider taking out a loan on your own. Be sure to speak with a financial advisor and your HVAC company to determine what options are available and appropriate for your situation.

There are a number of ways you can make your HVAC system more energy-efficient:

  • Make sure your air ducts remain clean, and clean or change your air filters regularly.
  • Have regular inspections to take care of problems as they arise.
  • Make sure your doors and windows are well-sealed and keep your attic well-ventilated.
  • Install a smart thermostat. If you don't want to or can't buy one, try to keep the temperature indoors as close to the outside temperature as you can.
  • When it comes time to replace any part of your HVAC system, see if there are Energy Star-certified or similar environmentally friendly options.

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