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10 Best HVAC Companies in St. James, NY

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Written By Bradford Cuthrell

Last Updated April 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 St. James home, so it's important to make sure all systems are working properly.

Explore our list of the top HVAC companies in St. James to find the best choice for you and your home. Our topic contractors can help you stay comfortable while reducing your bills.

Top 10 Best HVAC Companies in St. James

GMG HVAC Inc.

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77 Windsor Pl Suite 11, Central Islip, NY 11722 (631) 309-2535 gmghvac.com

Clear pricing policy

Free quote

Informative resources

Reliable customer support

Services Offered

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

Danisi Energy

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3205 NY-112, Medford, NY 11763 (631) 732-6666 danisienergy.com

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Free quote

Reliable customer support

Clear pricing policy

Services Offered

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

Absolute HVAC Mechanical Systems Inc.

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Granny Rd, Farmingville, NY 11738 (631) 320-0814 absolutehvacli.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Free quote

Informative resources

Services Offered

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

Cool Power LLC

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75 Air Park Dr, Ronkonkoma, NY 11779 (631) 600-7994 coolpowerac.com

Clear pricing policy

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Reliable customer support

Services Offered

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

A1 Heating and Air Conditioning Inc

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11 Hulse Rd, Setauket- East Setauket, NY 11733 (631) 331-2102 a1homeair.com

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Clear pricing policy

Services Offered

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

BOBBY O's HVAC Inc.

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37 Parkridge Cir, Port Jefferson Station, NY 11776 (631) 928-1250 bobbyoshvacinc.com

Reliable customer support

Free quote

Prompt service delivery

Clear pricing policy

Informative resources

Services Offered

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

Jen Air Inc

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1507 Smithtown Ave #17, Bohemia, NY 11716 (631) 563-1318 jenairinc.com

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Free quote

Reliable customer support

Services Offered

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

Cool Air Designs Inc.

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870-2 Marconi Ave, Ronkonkoma, NY 11779 (631) 676-7733 coolairdesigns.com

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Clear pricing policy

Reliable customer support

Services Offered

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

Yas Hvac Corporation

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10 Lawrence Ave # 1, Smithtown, NY 11787 (631) 656-3313 yashvac.com

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Free quote

Services Offered

Furnace installation
Filtration
Ac installation
Inspection
Maintenance
Emergency services

Airco HVAC

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147 Shore Rd, Mt Sinai, NY 11766 (516) 669-2422 aircohvaccorp.com

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Clear pricing policy

Reliable customer support

Informative resources

Services Offered

Maintenance
Ac installation
Filtration
Emergency services
Furnace 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 near the end of its lifespan, it likely needs repairs or replacement from an HVAC company. Look for these signs your system needs service:

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

If you notice any of the above, it's wise to have a local HVAC technician inspect your system. They can identify problems and recommend whether repair or full HVAC replacement is needed.

Cost of HVAC Installation and Maintenance in St. James

Your HVAC installation or maintenance cost fluctuates depending on the type of unit. Common HVAC unit varieties include the following:

  • Split or mini-split: Homes without ductwork for central heating and cooling often have split or mini-split HVAC systems. These systems consist of internal units in each room to control temperature, which all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system performs similarly to a standard split system, but is able to utilize either gas or electricity as energy sources.
  • 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 effectively in more temperate climates.
  • Packaged heating and air: Packaged HVAC systems are more popular in smaller homes. These systems consist of a single combined heating and cooling unit, normally located in an attic or basement. This unit tends to be efficient, compact, and easy to maintain.

HVAC maintenance costs differ depending on the particular service needed. HVAC systems are complicated and may require different maintenance services. Costs for common services are as follows:

HVAC Unit TypeCost
Split$1,948-$4,966
Hybrid Split$3,947-$7,272
Heat Pump$3,056-$31,141
Packaged Heating and Air$256-$426

Ways to Save Money on HVAC Costs

Fixing your HVAC by repairing or replacing parts when needed is important, but can be costly. Luckily, there are steps you can take to slow the wear and tear on your system.

  • Keep your system clean. Cleaning your grills, condenser fan blades, ductwork, and indoor evaporator coil 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 once it starts to look dirty.
  • Monitor for potential problems. Monitoring your system for problems — for example, by checking your thermostat and energy bills regularly — helps you get ahead of problems before they get too expensive.
  • Change filters regularly. Changing or cleaning your air filters every 1–3 months helps air flow smoothly through your HVAC system. We also recommend regularly clearing dirt and debris away from the outside areas of your system.
  • 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 is required to do.
ServiceCost
Filter Replacement$64-$170
Condensor Cleaning$1,279-$3,836
Thermostat Repair$85-$213
Ductwork Cleaning$409-$1,023

How To Choose a Local HVAC Company

Knowing what makes a trustworthy HVAC company is crucial for a smooth installation or repair. Hiring an experienced, credentialed HVAC contractor gives you confidence your system can provide consistent heating and air conditioning year-round.

Compare Multiple Bids

Contact at least three HVAC providers for quotes. Explain the issues and have technicians visit to inspect your HVAC system if possible. Compare the providers' explanations, solutions, estimated costs, warranties, and timeframes. Avoid contractors that pressure you or demand payment upfront.

Check Credentials

Look for an HVAC company that employs skilled technicians who have the necessary licensure and training. In all states, HVAC contractors must obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for all technicians 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 what kind of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled by the state.

There is no state-level HVAC licensing in New York; however, there may be local requirements, so be sure to check with your city or municipal government. For example, in some cases, a technician may need a High Pressure Boiler Operating Engineer or Oil Burning Equipment Installer license from the NYC Department of Buildings, or a Certificate of Qualification for Refrigerating System Operating Engineer from the Fire Department of New York. Also look at a company's reviews and complaints on sites such as Google Reviews, Yelp, and the Better Business Bureau (BBB). Pick a company with positive feedback and stories of satisfied customers.

Understand Work Details

It’s important to know what the work process is going to look like. For HVAC repairs, the company should explain the exact parts that need replacement and why. Confirm that your technician will clean and test the full system afterward to ensure proper functioning. For replacement, ask the contractor to explain the new HVAC system brand, energy efficiency, model, estimated installation time, and features. Before work begins, you should understand how your provider will size the system appropriately for your home and the price you'll pay.

Compare Warranties

A reputable HVAC company will back its repair services and installations with a warranty. The longer and more comprehensive the warranty coverage, the better. Carefully compare warranty terms between contractors and choose the company that provides the best protection within your budget.

Get Quote in Writing

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

Frequently Asked Questions About HVAC in St. James, NY

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

Usually, it's smart to have your HVAC system inspected in the spring and fall, as technicians tend to be less busy at these times. 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 throughout the year by reducing the amount of work it takes for your HVAC system to maintain the temperature of your home. Always keep your thermostat as close to the outside temperature as you can, and avoid making drastic changes — adjust it only a few degrees at once. You may also consider purchasing a smart thermostat.

Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing a furnace or air conditioning unit takes anywhere from about half a day up to two days. The exact amount of time will be based on things like how large your home is, how easily accessible different parts of the system are, and whether your technician finds any problems.

For a 2,000-square-foot home, you'll want a furnace that's between 50,000 and 80,000 BTUs (British thermal units).

For a 2,000-square-foot home, you'll also want to look for an air conditioning unit with around 2.5 to 5 tons of capacity. In general, if your home is over 1,000 square feet, central air will be more effective than window air conditioning units.

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

There are several ways you can make your HVAC system more energy-efficient:

  • Make sure your air ducts remain clean, and change or clean your air filters on a regular basis.
  • Have regular inspections to take care of problems 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 keeping your inside temperature as close to the outside temperature as is comfortable.
  • When you need to replace part of your system, see if there are Energy Star-certified or similar environmentally friendly options.

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