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Best heating and air conditioning pros near Gary, IN

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TRUSTED BY GARY, IN HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon175
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Gary - Updated Nov 2026

Avatar for Porterhouse Heating & Cooling
Porterhouse Heating & Cooling
4.8(
218
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Repair+16 more

Serving Gary, IN and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"A big shout-out to Shawn and his team. He was very knowledgeable, addressed all of our concerns, and made us feel comfortable. We had a full furnace and AC replacement and not only did he make a great offer, but they were on-time, fast and professional. Job well done! I would recommend Porterhouse cooling to everybody who is thinking about some HVAC work."
Work truck
Certification
Business card
Response time9 hrs
17 neighbors recently requested a quote
Recommended by94%of homeowners
C2 Heating & Cooling
4.9(
31
)
Central A/C - InstallCentral A/C - Service or RepairGas Furnace / Forced Air Heating System - Install+7 more

Serving Gary, IN and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"I hired C2 Heating and cooling to move a Furnace in a rental property purchased. They began work the day after contacting them and had finished by the end of that same week. They built a new furnace room and installed a new furnace, they also ran all the utility and HVAC lines to the new furnace room. I am very satisfied with C2 Heating and Cooling. I would recommend them to anyone seeking professional HVAC service."
Response time10 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for C2 Heating & Cooling LLC
C2 Heating & Cooling LLC
4.6(
35
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Gary, IN and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Craig was wonderful to work with. After leaving a voicemail to inquire about his services, I very shortly received a text that he was tied up at the moment but would be able to call me back a little later. When he arrived later that same day, he was very thorough in describing the workings of the system when I had some questions. He was very flexible in working around our schedule and was right on time. In dealing with the various systems of a home, finding a friendly and trustworthy service provider in each category can sometimes be an overwhelming process, with hits and misses along the way. The HVAC service category just got taken care of for me! I would use and recommend C2's services again without hesitation."
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+47 more

Serving Gary, IN and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

We are family owned and operated. We service all brands, makes and models. From furnace and water heater repair and replacements, all the way to a leaking kitchen faucet or bathroom toilet. One call REALLY does it all. Faucets, toilets, sinks, drain rodding, water heaters, boilers, furnaces, air conditioners and humidifiers. New construction to radiant heat. You know you called the pros the first time. Licensed, bonded and insured, we offer easy approval and affordable financing as well!

21 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Champion Technology Services Management
Champion Technology Services Management
4.8(
58
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+6 more

Serving Gary, IN and surrounding areas

Approved

In business since 2008

Free estimates

Credit card accepted

"I was extremely pleased with their customer service, attention to detail, and transparency. The entire team was professional, and they worked extended hours to meet my timeline. The price was very reasonable compared to the amount of work I got done and in comparison to other quotes. I would definitely recommend Champion and I will be using them for all my future installs for HVAC. Cory"
15 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for LEE'S HEATING AND COOLING
LEE'S HEATING AND COOLING
5.0(
9
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair+2 more

Serving Gary, IN and surrounding areas

Approved

In business since 2014

Emergency services offered

Small jobs welcome

Lee?s Heating & Cooling provides dependable residential HVAC service throughout Northwest Indiana. We help homeowners with AC and furnace repair, system diagnostics, poor airflow, thermostat problems, seasonal maintenance, and comfort concerns. \n \nOur family-rooted business was created to honor the legacy of our Grandfather, a Vietnam veteran whose values of service, hard work, honesty, and dependability still guide us today. We believe customers deserve clear answers, respectful treatment, and approval before any repair begins; not pressure, unnecessary work, or surprise charges. \n \nStephanie and Zach are committed to responsive communication and treating every home with care. Whether your system will not start, is blowing warm air, is not heating properly, or simply needs maintenance, we are ready to help. \n \nLeesHeatingNWI.com | 219-455-1453

Replacing Air Filter
HVAC Cleaning Check
Roof top Unit
HVAC Cleaning Check
HVAC Cleaning Check

+10

20 neighbors recently requested a quote
Avatar for Dynamic Comfort HVAC Specialists
Dynamic Comfort HVAC Specialists
5.0(
5
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallCentral A/C - Service or Repair+4 more

Serving Gary, IN and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

With over 10 years of experience we take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Furnace Install
9 neighbors recently requested a quote
Below Zero
4.8(
32
)
Furnace / Forced Air Heating System - Install or ReplaceFurnace / Forced Air Heating System - Install or Replace - For BusinessFurnace / Forced Air Heating System - Repair or Service+1 more

Serving Gary, IN and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

Below Zero welcomes you to experience a tradition of customer satisfaction that will exceed your greatest expectations. We are a growing company that still believes in having a one-on-one relationship with our customers. We highly value our customers and will do our very best to give them excellent service. We are known for are prompt service and our superior attention to detail. You can count on us to get the job done right the first time. \n \nWe are a certified Tappan dealer. We install and service furnaces, a/c units, boilers, humidifiers, and duct work and professional water heaters. We offer free estimates on installations and will beat any written estimate. We will meet you at your convenience and will not keep you waiting. \n \nCall Below Zero today and you will be glad you did. \n

Recommended by93%of homeowners
Avatar for Geothermal Specialist, Inc.
Geothermal Specialist, Inc.
4.5(
35
)
Geothermal Heating or Cooling System - InstallGeothermal Heating or Cooling System - Service

Serving Gary, IN and surrounding areas

Approved

In business since 1983

Warranties offered

Credit card accepted

"This is hard to believe but the HVAC guy that installed the GeoThermal refused to repair it because it was 4 years old. I found Geothermal Specialist through HomeAdvisor, these people got on the repair in less than 24 hours after my call, but also showed me that the Modine Geothermal has a 10 year parts and labor warranty."
Response time2 hrs
Response rate87%
5 neighbors recently requested a quote
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Showing 1-10 of 345
Heating and Air Conditioning FAQs, answered by experts

AC leaks are common, and an HVAC pro can usually fix them. You may be able to resolve some leaks on your own, but a professional HVAC technician should handle most AC leak repair. If left ignored, an AC leak could cause serious damage to your system or leave you with expensive water damage, usually leading to more costly repairs or replacements.

There are ways to detect a refrigerant leak with several different testing methods. However, most homeowners can figure out something’s wrong with their AC unit by noticing these common signs:

  • Ice forming on the evaporator coil

  • Water leaks near the AC unit

  • Frequent hissing sounds

  • Increased electric bills

  • Unit takes longer than usual to cool

  • Unit is blowing hot air

Yes, mini-split systems are generally less expensive to run than central air conditioners and are significantly more energy-efficient. Because mini-splits do not rely on ductwork, they avoid the energy loss associated with ducted systems, allowing cooled or heated air to reach its destination more efficiently. Additionally, they offer zoned control, meaning you can run units in individual rooms and turn them off in unoccupied areas. This capability can lead to energy savings of about 30% compared to a central air system, resulting in a lower monthly energy bill.

If both your furnace and AC unit are more than a decade old, it may be a good idea to replace both of them. However, your furnace can last up to three decades, and your air conditioner can typically last up to 15 years, so consulting with a pro before deciding to replace both of them is best. If it’s before that time limit for each, you can fix many problems with repairs or just replace one.

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

The Gary, IN homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.