Lennox Heating and Cooling


We are a licensed, highly qualified, nationally certified heating and air conditioning contractor, with the skills and know-how to keep your Lennox HVAC equipment operating in top form. GSHA Services, LTD is Your local Lennox Premier Dealer™.

online estimate

HVAC Estimate

Answer a few quick questions and you will get a fast, accurate AC & Heating Estimate sent to your email! >>>

Lennox Furnaces

Lennox Furnaces

View a complete line of Gas and Oil Furnaces engineered for perfect warmth and efficiency.

Lennox Air Conditioners

Lennox Air Conditioners

Air Conditioners are among the quietest and most energy-efficient units you can buy.

Lennox Thermostats

Lennox Thermostats

The Lennox ComfortSense® line of thermostats makes programming an energy-saving schedule remarkably easy

Lennox Mini Split Systems

Mini Split Systems

When only certain rooms need heating and cooling, Lennox Ductless Mini-Split heat pumps provide a smart, flexible solution.

lennox boilers

Lennox Boilers

Lennox Residential boilers are a reliable, high quality resource for those living in northern regions.

Furnace Repair

Furnace Repair

If you are looking for repair in Chicago, IL, contact us today and let us help you keep your home comfortable.

Air Conditioner Repair

Air Conditioner Repair

When your AC stops working, you need qualified help fast. Let us be your resource for air conditioner repair.



    About Us

    GSHA Services, LTD – Service, Maintenance, Installation

    GSHA Services, LTD, is a professional licensed and insured Electric, Heating, Ventilation and Air Conditioning (HVAC) service company dedicated to providing residential and commercial customers with quality products and dependable service. We provide new equipment installations, as well as repairs and maintenance of existing heating and air conditioning equipment.

    Whether you’re facing a broken furnace or electric problem, GSHA Services, is your professional HVAC contractor and electrician in Chicagoland area. Combining expertise in electric and home heating systems, we have the skills and expertise you can rely on for everything from furnace repair to generator. Providing full-service air conditioner, furnace, and generator repair and installation,

    GSHA Servies is here to keep your home comfortable year-round. For the very best customer service and quality, contact us today!

    Same Day Installation

    Fully stocked warehouse & emergency HVAC installation services means your furnace or air conditioner can be installed today!

    Financing Options

    Flexible financing options, with approved credit, are ideal for those who don’t want to tap into their existing funds or use up their credit lines.

    Up-Front Pricing

    Prices you can trust, delivered in full up front. No hourly rates or mystery fees. We offer the best value for your home project or service work.

    Free Estimate

    Looking for someone to tell you up front what that home, heating or cooling project will cost? Your search ends here.

    Receive$150 up to 5% of the Estimate New Furnace Installation and $150 AIR DUCT CLEANING (regular $495)

    Receive$150 up to 5% of the Estimate New A/C Installation and $150 AIR DUCT CLEANING (regular $495)

    Receive$150 up to 5% of the Estimate New Lennox Furnace and/or AC or 18 Months 0% FINANCING

    Receive$150 up to 5% of the Estimate New Air Conditioning Installation or 18 Months 0% FINANCING

    Receive$150 up to 5% of the Estimate New Trane Furnace and/or AC or 18 Months 0% FINANCING

    Receive$300 up to 5% of the Estimate New KOHLER Generator or 0% FINANCING

    Receive$250 OFF New Generac or Briggs & Stratton Generator or 12 Months 0% FINANCING

    Receive$200 OFF New Boiler Installation

    Receive$50 OFF New Water Heater Installation

    For one stop furnace & air conditioning service, repair and installation, trust GSHA Services. We do it all — for you. We’re open 24/7 to serve you. Call today.

    Lennox Premier Dealer™

    GSHA Services, LTD is Your local Lennox Premier Dealer™

    We are proud to wear the Dave Lennox Premier Dealer badge. To earn and maintain ‘Premier ‘ status, Dave Lennox Premier Dealers must participate in an independent Customer Satisfaction program. Only those that consistently meet and exceed customer expectations can identify themselves as a Dave Lennox Premier Dealer.



    3 to 12/mo Zero Interest / NO Monthly Payments – Same As Cash, 25 to 72/mo Zero Interest With Equal Monthly Payments >>>

    HVAC Services

    We Service All Makes & Models

    GSHA Services is an authorized dealer for multiple leading brands, and can service and repair all brands and model of heating and cooling system, not just one brand only.

    Lennox Heating & Cooling logo Carrier Heating & Cooling logo Generac Electric logo Kohler Generators Electric logo Goodman Heating & Cooling logo Amana Heating and Cooling logo National Comfort Products logo Honeywell Thermostats logo

    4.9 out of 5 stars (based on 127 reviews)
    Very good3%

    5.0 rating

    Gsha are the best! They are punctual precise and the best guys for our heating and ac needs. Ive used them for over 7 years and have referred them to everyone.

    Noel Martinez
    5.0 rating

    I had to replace my air conditioner around 10 days ago or so I thought. I had to get a couple quotes at least, even I am not to shop around for too long, especially in the 96 F weather with no cold air coming in. But since everything is around 25 years old, I would’ve gotten the works done – high efficiency 2-stage furnace, HVAC, humidifier, thermostat, clean the air ducks, run the PVC pipes …. .
    Got 3 quotes from the area businesses and these guys were priced very competitively, efficient and most importantly, I could sense the knowledge and precision. Peter came to the house the next morning after I placed a call at around 5pm. Explained everything in detail and gave several options. GSHA Services is a small shop and people who run it do pretty much everything themselves. That’s how it used to be. Before Wal Mart, Costco and Amazon.
    So I have never mentioned the possibility of repairing the broken unit, because well, it is old, very old and so is the furnace and the humidifier. But coming myself from the solid engineering background and at least superficial knowledge of the subject, I couldn’t help to dig a bit deeper into my original Carrier A/C while waiting for the quotes. Just couldn’t. After going via a few not very safe, don’t-try-it-at-home-type motions and experiments, I figured out the problem. That was the capacitor. The price was a couple hundred dollars, vs. well close several thousands.
    So I replaced the capacitor, but when the time will come to do the works, GSHA will be doing it.

    Tony P.
    5.0 rating

    Jakub from GSHA has provided service on my ac, furnace, and thermostat on different occasions. He is always professional and easy to communicate with, and he is great at problem solving.

    Jennifer Thornton


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