New Viessmann Vitocrossal 300, CU3A!

A recent interview with Steve David, Sales Director-East, Viessmann Manufacturing Company (U.S.) Inc., about the new compact, gas-condensing, floor standing Vitocrossal 300 CU3A boiler.

cu3a_adWhat is the Vitocrossal 300 CU3A?

It’s a highly efficient stainless steel gas-fired condensing boiler available in four sizes ranging from 94 to 199 MBH, with a 5:1 turndown ratio. Since its release fifteen years ago in Europe, we’ve sold over 100,000 units in Europe; 34,000 of them in the last four years alone. June 2015 marks the introduction of the Vitocrossal 300 CU3A to the US market, where we expect it be very popular.
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Adventures in the Vitomobile: Indiana

 At the end of May, the Vitomobile was picked up by Gunn & Pegelow in South Haven, Michigan and then began the trek into Fort Wayne, Indiana. Lee McLaughlin then met with contractors and engineers to show off the boilers in the back of the Vitomobile.

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Case Study: Mars Air at Navy Pier

Jutting out from the Lake Michigan coastline of downtown Chicago is the 3,300-foot-long family attraction of Navy Pier. With new construction expected to complete in 2016, Navy Pier is updating its experience, and they’re using Mars Air to improve their environment.


Here are some of the pictures of the job site located just beyond the giant ferris wheel in what will be The Centennial Vision site at Navy Pier.

Mars Air Systems: keep outside air and bugs out, and inside air in.

OLYMPUS DIGITAL CAMERA    Mars Air Curtains are featured above the entrances of multiple spaces. For more information on  Mars Air, contact Gunn & Pegelow at 847-573- 7030, or go the Mars Air  website.



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Adventures in the Vitomobile!

Screen Shot 2015-06-23 at 1.16.25 PM

Starting on Monday June 1st, Gunn & Pegelow began traveling through Indiana and Illinois in Viessmann’s Mercedes-Benz Sprinter, the Vitomobile. The Vitomobile is a Viessmann Boiler live-fire training display van that allows reps to showcase the Vitodens 100, 200, 222-F boilers, racking systems and controls to designers, engineers, and contractors in action instead of on a piece of paper. Our trip takes us through Indiana and Illinois as shown on the map above.

Designers at KJWW take turns viewing the VItodens 200, and 222-F

Designers at KJWW take turns viewing the VItodens 100, 200, and 222-F

The Mobile sitting near a site by Illinois State University.

The Mobile sitting near Illinois State University.

     We will be updating our blog with pictures of the different locations we have gone, highlighting certain aspects of the boilers as we go.

  For more on Viessmann, visit their website or call Gunn & Pegelow at 847-730-7030.  For more information on Viessmann’s Vitomobile, click here.


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Case Study: Viessmann CM2 Boilers at Liberty Bank


New Viessmann CM2-186 Boilers at Liberty Bank

A Viessmann CM2 186 Boiler weighs  726 pounds. Two of them now sit at a Liberty Bank in Chicago’s Logan Square Neighborhood where Sherman Mechanical installed a boiler replacement system this fall.  Each of these Vitocrossal 200 models produces 643MBH output, together providing a redundant heating system for the bank’s heating needs while fitting in a small freight elevator and through a 36″ door.

Old Incinerator

Original incinerator from 1958

The bank was built in 1958 and still operated from much of the original equipment from the year it was built until this year. You can see the boilers during installation (below) and an old incinerator (left), both located in the basement. The Viessmann CM2 boilers can hold between 74 and 131 gallons of water and all have a max operating pressure of 75 psig.

The high mass capability affords these particular condensing, high-efficiency, boiler models to be a “drop-in” replacement of older vintage boiler styles such as cast-iron, which would normally require significant piping changes and other considerations.

CM2 Install

Viessmann CM2 boilers undergo commissioning

During the installation process, Sherman Mechanical also updated the piping by encasing them with insulation to reduce heat loss to bring the installation up to par with the 97% thermal efficiency offered by the CM2 boilers.

Finally, you can see the bank managers, Sherman Mechanical, and Gunn & Pegelow’s Michael John Hofer all in front of the completed boiler installation for a walk through of the system. We are confident they are going to love their new system and it will be there for a long while to come!

Owner training

Owner training


With each Viessmann boiler purchase, whether it is residential or commercial, owners are likely eligible to receive a rebate from the Nicor Gas Energy Efficiency Program.

Please contact Gunn & Pegelow if you are interested in learning more about Viessmann or if we can assist you with any of our other products!

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Announcing Mars Air Doors in Indiana


indiana-mapGunn & Pegelow is proud to announce new representation of Mars Air Systems for the state of Indiana! Mars Air is the leading manufacturer of air curtains, keeping outside air and bugs out and inside air in.

Be sure to check out their website for more details or contact our own Lee McLaughlin at for more information!


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Our New Partner: Porter Pipe and Supply

Bull Dog      Since 1976, Porter Pipe & Supply has provided superior products and service to their customers to help them achieve their goals. They offer the highest quality products and services available on the market today.                                                                                                 With over 36 years of experience and commitment to excellence, they have earned their valued reputation as the best reseller in the Chicagoland area. Since 1976, Porter Pipe & Supply has provided superior products and services to the HVAC industry, helping their customers achieve their goals. Now they have expanded that offering to become the first stocking supplier of PDM US pre-insulated refrigerant lines in the Chicagoland area. With over 36 years of experience and commitment to excellence, they have earned and place high value in their reputation as the best reseller in the Chicagoland area. With PDM US, they are adding to their product options the best and most durable pre-insulated copper line sets made today.                                                                                                 Contact Porter Pipe & Supply today to find out how you can make your mini-split and variable refrigerant flow product installation the finest available.

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