Your furnace is arguably the most vital appliance in your house, regardless of your home's size. On a winter night when it is -10° outside, your furnace is the only device protecting your family and keeping your home comfortable and safe. We should return the favor by ensuring your furnace is installed correctly and will continue to operate safely and reliably. A furnace installation conducted by Paragon Mechanical furnace technicians is something we take very seriously and we work hard to provide all of our customers with skilled craftsmen, superior expertise when selecting products and sizes and, most of all, exceptional value. We provide many services but, when installing your home's heating system, we aim to provide you with tremendous value and long-term reliability on each and every job.

Furnace Installations Are NOT Created Equal.


We work incredibly hard, both in your home and at our offices, to make sure your furnace installation is executed properly, efficiently, and within your budget. From the initial furnace consultation, during which we properly size equipment and help customers select among all the features and manufacturers, to the actual installation, we make it easy to achieve perfection in your home's heating system. Our installation crews are among the most knowledgeable and highly trained in the Chicagoland area, so they also have the ability to explain your system to you as proficiently as the project manager whom is dedicated to your project.


As premium comfort specialists, we offer a wide variety of furnace installation options and we will ensure your system is as unique as your home. From the basic "builder models" to the high efficiency, energy saving, premium models, our staff is very well-versed and highly trained in all makes and models available on the heating and cooling market today. You can rest assured knowing we will match you with a furnace designed to effectively heat and cool your home comfortably, all year long. We will walk you through choosing the perfect furnace for your home, and our furnace installers will make sure it is comfortable, efficient, and quiet.

  • Furnace Installation Checklist +

    Tankless Size

    The first thing to know in having a tankless heater installed is to determine the size tankless heater or tankless heaters you need for your home. This step is important and will generally be decided by the number and style of showers that the home owner would like to have able to run at the same time. Tankless heaters are sized in gallon per minute (GPM) rather then gallons per hour so the sizing is based on more any given moment or simultaneous shower. In certain applications it is necessary to have more than one heater installed to meet the customers needs.


    Venting is one of the most critical points on tankless heater installation. Once you know the size and how many you can determine the venting by understanding the specifications of the tankless heater or tankless heaters which you have sized the job for. Two things are a must on every properly installed tankless heater; the first is that all tankless heaters require outside air for combustion intake and second all exhaust must be properly sized according to the manufacturer specification.

    Gas Piping

    The second most common short cut taken on tankless heater installation’s is not sizing the gas pipe correctly. This is typically the most physically demanding parts of a tankless heater installation however this is also critical for the tankless heater to operate correctly on high fire situations. You will find that on all our tankless installations the project manager and field installer will both alike review and make sure that the gas piping for the tankless heater is sized correctly and that your gas meter is also sized properly.

    Return or No Return

    In larger homes it is common that have more than 30 linear feet of plumbing pipe will benefit from a return system if there is not already a return system. A return system is a system that will provide “instant” hot water for those larger homes which the water heater is fair away from the points of use. In retro-fit application’s a return system can be installed in one of the following three ways; First if there is an existing return line then we can retro fit a proprietary return system which will respond exactly the way the existing return system was if not better. The second way would be to actually install a return line if access is available to do this then we could install the return system and you will have “instant” hot water to all points of use. The third is a unique system that utilizes the cold line to create a return system. The only downfall to this system is that the cold water at certain points will be wamer when first opened. The upside is that you will have hot water instantly and without having to open walls or run a dedicated return line.

  • Top Rated Furnace Manufacturers +





    Armstrong Air

    Armstrong Air


  • Furnace Training & Experience +

    Furnace Installations Completed

    Furnace Training and Experience

    Repeat Furnace Customers
  • Dispatch Locations +

    Chicago, IL

    River North • The Loop
    South Loop • Old Town
    Wicker Park • Bucktown
    Gold Coast • Lakeview
    Lincoln Park • Magnificent Mile
    Ukranian Village • West Town

    Arlington Heights, IL

    60004 • 60005

    Elmhurst, IL


    Glencoe, IL


    Highland Park, IL


    Lake Forest, IL


    Naperville, IL

    60540 • 60563 • 60564
    60565 • 60566 • 60567

    Wilmette, IL


    Winnetka, IL

  • Furnace Customer Experiences +

    "Scott and Dave came and installed my new Noritz tankless heater and were very clean and neat to the t"

    Jack M.
    Arlington Heights, IL

    "I love my new tankless heater thank you Paragon"

    Mickey H.
    Northbrook, IL

    "I originally had an eternal tankless installed by another company and when it failed for the third time I found Paragon Mechanical and Doug came and installed my new Noritz tankless heater. I am so happy with my experience thus far and look forward to many years with my new tankless heater."

    Chris Z.
    Hoffman Estates, IL

    "I have never been so happy with a contracting company; they were on-time, very clean and neat and delivered everything that was promised."

    John D.
    Itasca, IL

    "Doug did a great job installing my tankless heater and informed me of everything along the way. He is a great installer and did an awesome job."

    Mike R.
    Arlington Heights, IL

    "I had to replace my tankless heater after only 2 year because the previous company installed it wrong. Scott did a great job and though it was the same product you could see th ediffernece between the previous company and Scott’s craftsmen ship."

    Nick W.
    Northbrook, IL

    "I had a great experience dealing with Paragon and there installation team. I interviewed several companies and am suresure that choosing Paragon for installing my tankless heater was the correct choice."

    Jim P.
    Deerfield, IL

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