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10 Best HVAC Companies in Diamond Bar, CA

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Written By Bradford Cuthrell

Last Updated February 2024

On average, 55% of energy use in American homes goes toward heating and cooling, according to the U.S. Department of Energy. Energy expenses in Diamond Bar can be steeper than in some other places, meaning that you'd probably like to save money on your bill.

Our list of Diamond Bar's top HVAC companies can help you get your system into its best shape ever, allowing you to save money while staying comfortable.

Top 10 Best HVAC Companies in Diamond Bar

Temp Air System Inc

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15843 Amar Rd, La Puente, CA 91744 (833) 292-6888 tempairsystem.com

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Clear pricing policy

Prompt service delivery

Informative resources

Reliable customer support

Services Offered

Inspection
Indoor air quality
Ac installation
Ac repair
Maintenance
Emergency services
Filtration
Duct cleaning
Furnace installation
Furnace repair
Ductless
Ventilation

AARD Mechanical Air Conditioning & Heating

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855 W Lambert Rd, Brea, CA 92821 (877) 227-3125 aardmechanical.com

Prompt service delivery

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Free quote

Clear pricing policy

Reliable customer support

Services Offered

Indoor air quality
Furnace installation
Furnace repair
Maintenance
Duct cleaning
Emergency services
Ductless
Ac repair
Ventilation
Ac installation

Metz Air Control

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13784 Monte Vista Ave, Chino, CA 91710 (909) 614-4125 metzaircontrol.com

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Clear pricing policy

Free quote

Informative resources

Prompt service delivery

Services Offered

Furnace repair
Furnace installation
Ac repair
Maintenance
Indoor air quality
Ac installation
Inspection
Duct cleaning
Ductless

Canyon Air Systems

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503 E Rte 66, Glendora, CA 91740 (626) 210-0747 canyonair.com

Prompt service delivery

Reliable customer support

Free quote

Informative resources

Clear pricing policy

Services Offered

Filtration
Indoor air quality
Furnace installation
Ductless
Duct cleaning
Maintenance
Ac installation

Steve's 5 Star Service Cooling, Heating & Plumbing

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665 N Central Ave, Upland, CA 91786 (909) 985-5254 stevesair.com

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Clear pricing policy

Free quote

Informative resources

Services Offered

Ductless
Furnace installation
Emergency services
Indoor air quality
Inspection
Ac repair
Ventilation
Ac installation
Maintenance
Boiler installation

Alber's Air Conditioning & Heating Service

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14617 Ramona Blvd, Baldwin Park, CA 91706 (626) 960-1868 albersair.com

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Reliable customer support

Informative resources

Clear pricing policy

Prompt service delivery

Services Offered

Indoor air quality
Furnace installation
Furnace repair
Ac installation
Emergency services
Maintenance
Ventilation
Ductless

Goldbaum's Air Conditioning & Heating

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1531 W 13th St Ste K, Upland, CA 91786 (909) 981-1001 goldbaumsair.com

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Reliable customer support

Free quote

Prompt service delivery

Services Offered

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

Air CareSaver - Air Conditioning and Heating

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963 Fairway Dr, Walnut, CA 91789 (626) 425-4711 aircaresaver.com

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Clear pricing policy

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Free quote

Prompt service delivery

Services Offered

Furnace installation
Maintenance
Emergency services
Ac installation
Ac repair
Ventilation
Indoor air quality
Filtration

GMC Heating & Cooling

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993 W 8th St, Upland, CA 91786 (909) 331-5313 gmcaircondition.com

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Free quote

Reliable customer support

Clear pricing policy

Services Offered

Inspection
Duct cleaning
Ventilation
Maintenance
Ac installation
Furnace installation
Indoor air quality
Boiler installation
Filtration
Ac repair

Marathon HVAC Services, LLC.

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212 E Rowland St #317, Covina, CA 91723 (626) 338-1511 marathonhvac.com

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Clear pricing policy

Reliable customer support

Prompt service delivery

Services Offered

Ductless
Indoor air quality
Furnace installation
Ac repair
Maintenance
Ac installation
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 HVAC system is faulty or getting old, it likely needs repairs or replacement from an HVAC company. Watch for these signs your system needs service:

  • Higher than normal energy bills
  • Corrosion, rust, or cracking
  • Refrigerant leaks
  • Odd noises when turning on
  • Frequent breakdowns and need for repairs
  • Uneven heating/cooling or poor air circulation
  • Temperature control issues or thermostat malfunctions
  • An HVAC system that's over 15 years old

If you notice any of these HVAC issues, you should have a technician inspect your system. A local professional can diagnose problems and decide whether repairing or getting a new HVAC unit is the correct solution.

Cost of HVAC Installation and Maintenance in Diamond Bar

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

  • Split or mini-split: If your home doesn't have the right ductwork for central air or heating, you likely have a split HVAC system. Split or mini-split systems consist of indoor units that control the temperature in individual rooms, and that are all connected to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions in the same way as a normal split system, but has the benefit of being able to utilize energy from either electric or gas sources.
  • Heat pump: Heat pumps exchange warm and cool air between your home and outside. These systems don't produce their own heat or AC, so they work more effectively in more temperate climates and may not be as effective during Diamond Bar's hot summers.
  • Packaged heating and air: Packaged HVAC systems work best in smaller houses. They consist of a single combined heating and air conditioning unit, usually located in an attic or basement. This unit is typically compact, cost-effective, and straightforward to maintain.

HVAC maintenance prices vary based on the specific services required. HVAC systems can be complicated and potentially require a number of services. Price ranges for typical jobs are as follows:

HVAC Unit TypeCost
Split$1,918-$4,889
Hybrid Split$3,886-$7,159
Heat Pump$3,009-$30,658
Packaged Heating and Air$252-$420

Ways to Save Money on HVAC Costs

Essential HVAC maintenance is important, but can be expensive. Fortunately, there are steps homeowners can take to reduce wear and tear on their HVAC and lower future maintenance needs.

  • Change the position of your blinds seasonally. During winter, leave your blinds open so your home benefits from passive solar heat. In summer, keep blinds shut to block out heat. Doing both reduces the amount of work your HVAC system needs to do.
  • Change filters regularly. Air flows best through your HVAC system when you change out or clean the filters every 1–3 months. Also try not to let debris pile up on the outdoor parts of your HVAC.
  • Monitor for potential problems. Keeping an eye out for problems, for instance by routinely checking your thermostat and energy bills, lets you resolve them before they get out of hand.
  • Keep your system clean. Cleaning your grills, indoor evaporator coil, condenser fan blades, and ductwork regularly helps keep your HVAC system working efficiently and reduces the risk of mold growth. The National Air Duct Cleaners Association recommends cleaning your HVAC system when it begins to look dirty.
ServiceCost
Filter Replacement$63-$168
Condensor Cleaning$1,259-$3,777
Thermostat Repair$84-$210
Ductwork Cleaning$403-$1,007

How To Choose a Local HVAC Company

Knowing the indicators of a reliable HVAC company is key for a smooth repair or installation. Established providers with certified technicians can offer assurance your HVAC system will deliver consistent coolig and heating year-round.

Compare Multiple Bids

Request estimates from three or more HVAC contractors. Explain your issues and ask if specialists can inspect your system in person. Compare each company's diagnoses, recommended solutions, estimated cost, warranties, and timeline. Avoid providers that pressure you or demand payment before work.

Check Credentials

Look for an HVAC company that employs qualified technicians who have the necessary licensure and training. HVAC contractors in all states need to obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is required for all contractors who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." An individual must pass an exam (the type of exam depends on the type of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.

In California, HVAC contractors 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 must have four years of experience and be bonded, and contractors with employees must also meet insurance requirements. Checking reviews on Google Reviews, Yelp, the Better Business Bureau (BBB), and similar sites can aid your decision as well. Choose a company with great reviews and reports of positive experiences from customers.

Understand Work Details

It’s important to understand what the work process is going to look like. For HVAC repairs, the company should detail the particular parts that need replacement and why. Get confirmation that your technician will clean and test your system afterward to ensure proper functioning. When replacing your HVAC, request that the installation company describe the new estimated installation time, energy efficiency, features, model, and brand. Before work starts, ask how your provider plans to accurately size the unit for your home and how much it will cost.

Compare Warranties

Reputable HVAC companies stand behind their work with warranties. Compare warranties from different companies, bearing in mind that broader coverage is better. Look for the provider that offers the most coverage for a reasonable price.

Get Quote in Writing

Get a written proposal before HVAC work starts. A comprehensive quote includes both labor and material costs. Make sure you understand and agree to all terms before signing the contract.

Frequently Asked Questions About HVAC in Diamond Bar, CA

You should have your HVAC system inspected twice a year. After the inspection, your technician will tell you if any services are required. You should also call a technician if you start noticing issues such as leaks, strange noises, or unusual smells. If your home has ductwork, you should have it inspected every few years.

Usually, it's a good idea to schedule inspections in the spring and fall, as these times tend to be less busy. This also helps make sure your system is prepared for the summer and winter, when it typically sees the most use.

You can save energy during the summer by reducing the amount of power your HVAC system uses to keep your home cool. Keep your thermostat temperature as close to the outside temperature as is comfortable, and 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 avoid letting cool air escape. Similarly, make sure your attic is well ventilated to avoid trapping excess heat in your home.

For a 2,000-square-foot home, you should look for around 2.5 to 5 tons of air conditioning capacity. In Diamond Bar, you'll probably want to choose a unit that's on the higher end of this range. If your home is larger than 1,000 square feet, central air will generally be more effective for cooling than window units.

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

Your HVAC company may offer financing options via a third-party lender, or you may choose to obtain your own loan. It's smart to discuss payment options with your HVAC company and a financial advisor to make sure that you find the best option for you.

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

  • Keep ductwork clean, and clean or change your air filters regularly.
  • Have regular inspections to take care of issues as they come up.
  • 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 your inside temperature as close to the outside temperature as is comfortable.
  • When it comes time to replace any part of your HVAC system, see if there are Energy Star-certified or other environmentally friendly options.

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