Heating & Air Conditioning


Lennox S L P 98 V Furnace

We carry a complete line of single-stage and multi-stage gas furnaces that run quietly and are engineered for perfect warmth and efficiency. Lennox furnaces can keep temperatures consistent and your house in peace and quiet on those cold days of winter. Our line-up includes products that feature energy ratings of up to 98.7% AFUE, which can save you hundreds of dollars each year on utility bills.

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Air Conditioners

Lennox X C 25 Air Conditioner

Our Lennox air conditioners can keep temperatures where you set them while only using the energy that's needed, even on the most humid days. Solar-ready units can reduce your cooling and heating costs by up to half. The air conditioners we offer are among the quietest and most efficient units you can buy with industry-leading efficiencies of up to 26.00 SEER.

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Heat Pumps

Lennox X P 25 Heat Pump

Electric or solar-powered heat pumps are an efficient choice when you want cool air more often and heated air only on occasion. Heat pumps can keep temperatures where you want them using only the energy that's needed. We can also combine a compatible, energy-saving heat pump with an efficient gas furnace. The furnace would be the primary heat source on extra-cold days, ensuring warmth and comfort.

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outline of home

One possible solution for high energy costs may be buried deep under your lawn. Geothermal heating and cooling systems take advantage of constant temperatures in the ground by using a high-pressure refrigerant to move heat between indoor and underground environments through long loops buried in your yard. There is no flame, flue or outdoor equipment.



In-Floor Heating

in-floor tubing for in-floor heating

Tired of cold floors? Radiant floor heating can warm living spaces while eliminating those hot or cold pockets. With heating components hidden below the floor, you don't have to look at or arrange furniture around vents again. With no ductwork involved, you can get ahead on improving the indoor air quality in your home.



Ductless Mini-Split Systems

Lennox M P B mini-split system

Have a room or space where installing or extending ductwork is not practical? Ductless mini-split systems are a versatile and ideal heating and cooling solution for spaces like add-on rooms. We can install compact, wall-mounted units either indoor or outdoor through a small hole in your wall.

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Packaged (PKG) Units

Lennox L R P 16 G E packaged unit

Packaged units are a perfect all-in-one heating and cooling solution for homes built on a crawlspace instead of a basement. They are self-contained heating and cooling systems installed outside, when no indoor furnace or air handler are required. Gas, electric and heat pump models are available options.

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Garage Heaters

Lennox L F 24 garage heater

We carry heating systems to make your garage or workplace warm and comfortable. These low-profile, reliable and efficient units come in many sizes and are cost-effective, ideal solutions for spaces like home garages and industrial work areas. A garage heater can also provide a warm environment for you to get in and out of your car, keep your pets inside from the cold weather and protect your vehicle from the havoc of cold starts on its engine.

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Lennox heat pump and solar panels

Reduce your energy costs by up to half with solar-ready heat pumps. Our Lennox heat pumps can use SunSource modules to harness free and renewable solar power. While the products we carry efficient on their own, you can save even more money and energy with the addition of solar. If the heat pump isn't running, the solar modules can help power lighting, appliances and other home electronics.

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We offer and install various brands of gas fireplaces, logs and stoves. These products range from direct vent and natural vent (B-vent). We also offer glass doors, vented logs and electric fireplace inserts.




Lennox G W B 9 I H Boiler

We carry Lennox boilers that are built to last. You'll find components in these systems like cast-iron heat exchangers and titanium burners.  They are designed to integrate easily with existing radiator or under-floor heating systems.  Since they do not use standing pilot lights, these boilers are also safer and more dependable.

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Residential Team

Contact Us for details on our products or to schedule a no obligation, free, in-home estimate.


Learn More

A portion of the content and images on this page were provided by Lennox International Inc. To learn more about heating, cooling and indoor air quality solutions we can offer, please visit Lennox Residential.


  • We appreciated the fast and friendly service that your company provided, the guys were very friendly and patiently answered any questions we had, they also did a great job cleaning up.  My husband and I will be calling your company from now on and will recommend your company highly.  Thank You  

    Chuck & Jean - Watson, IL.

  • "I want to compliment you for your staff at Merz. The young lady who answered the phone after 8PM could tell I was a desperate housewife –NO AIR CONDITIONING. The young man who made the service call certainly deserves a pat on the back. He was so courteous and efficient. Thank you!"

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    – Carolyn (Effingham)

  • "Thank you for the prompt service I received on my furnace. It was very frustrating to hear it wasn’t working and me down in Florida. Again, Thank You."

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    – Juanita (Effingham)

  • "Thank you for the work done. The two gentlemen that came to do the work were pleasant & nice to deal with when each were here to do their part of the job required."

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    – Raymond (Effingham)

  • "Thanks again for all of your help. We really appreciate the professionalism of your guys and how nice they were while they were out here working."

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    – Jason (Charleston)

  • "Just wanted to thank you and the crew that installed my new AC & furnace, their expertise and skills are much appreciated! The personal touch in keeping my house clean was nice also."

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    – Karen (Robinson)

  • "Thanks so much for your prompt and courteous service. I really appreciated you getting my system in and operational in one day. I am Cool! Also enjoyed the service guys, very helpful. With sincere appreciation- "

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    – Cheryl (Vandalia)

  • "Thank You Merz Heating & Air Conditioning for an awesome job installing our new furnace! Great installation & customer service! If you have heating & air needs give Daryl Smith a call, he's the man!!"

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    – Jenna (Effingham)