Here is their web sites...Maybe this will help..
http://www.colemanac.com
http://www.york.com
HISTORY
From the beginning, The Coleman Company, Inc., founded by W.C. Coleman, grew and prospered as a manufacturer of lamps and lanterns from 1900 through World War 1. In 1925, after receiving a degree in Mechanical Engineering from Cornell University, Sheldon Coleman (son of W.C.), joined the Canadian division of the company. In 1928, he returned to the United States and was placed in charge of the design section of the company. Sheldon Coleman understood the technology for creating light through combustion and decided to transfer that knowledge to home heating. He recognized the potential for non-solid fuel heating and, as General Manager of The Coleman Company, Inc. decided to break the traditional product line to include automatic heating.
The company was growing and heating equipment was leading the way. In the early 1950’s, the business was divided into four main parts. Thirty percent of sales by this time were coming from the gas floor furnace business.
In 1958, the newly formed heating division of The Coleman Company, Evcon, began supplying heating and air conditioning equipment to the rapidly growing manufactured housing segment of the new home market. This segment required unique product designs and distribution channels that differed from the larger site-built home market. The company recognized an opportunity to create a market niche for itself in the less competition yet rapidly expanding manufactured housing market. Evcon, the heating division for The Coleman Company soon became the dominant HVAC manufacturer in the manufactured housing market.
In the early 1980’s the company recognized that to continue its growth it would have to target the much larger Residential HVAC market. The first step toward entry into this segment was the construction of a state-of-the-art design and test laboratory, built in 1981. This facility provided the foundation for the development of the division’s new product lines for the site-built market.
In 1989, the Coleman family attempted to take The Coleman Company private; however, a stock purchase in April of that year was made by MacAndrews and Forbes Group, Inc. of New York that gave this group controlling interest. On February 2, 1990, Evcon Industries, Inc. was created by Beacon Capital Corporation, a private company located in Toronto, Canada, to purchase the heating and air conditioning division from the MacAndrews and Forbes Group.
In 1994, York International acquired Evcon Industries. Today York International is the largest independent manufacturer of heating and air conditioning equipment. York is a $4 Billion manufacturer with four divisions. One of the four is the Unitary Products Division that sells residential and light commercial heating and air conditioning equipment. York continues to market products for manufactured house and is your “ Indoor Outfitter” for residential and light commercial products ranging from 1 ton to 25 ton of cooling and 24 BTU’s to 320 BTU’s for heating.
Coleman® products are manufactured in three different plants, Wichita, KS, Norman, OK and Monterey Mexico. The Unitary Products group head quarters is located in Norman, OK. York distributes its products through independent distributors and a network of HVAC dealers. Please look for more information by searching our distributor and dealer site for your nearest supplier of quality Coleman® products.
If you are bored and have a little time you might want to peek at this list of funace company brand names and who owns them now..Seems heating and AC companies change hands regularly...
http://www.toad.net/~jsmeenen/history.html