About Us

“Quality and commitment, that’s the Wenig difference.”


Wenigs Company Photo


Wenig’s Company Founder Dwight L. Wenig and his wife Mildred

Wenig’s Incorporated began in 1970 as Green Acres Heating, Air Conditioning and Electrical, on Dwight L. Wenig’s farm in western Marion County, Ohio. It started as a partnership between Dwight Wenig and James Robert Cook of LaRue. The two man business offered service, repair and installation of heating and air conditioning equipment in the Marion and Hardin county area.

In 1971, two of Dwight’s five sons, Clifton and James joined the business, taking over for Cook who went into farming full time. Another Wenig son, Gary, joined in 1973 Another Wenig son, Douglas, came on board in 1977, and a year later, Bryan made the sixth family member of the growing business.

In the mid 1970’s, the business itself was also growing and a decision to expand was made. The new location is 421 W Center St., Marion, Ohio A new name to identify the family operation was also selected, as it became known as Wenig’s Green Acres Inc.

Beginning with the Amana line of quality heating and air conditioning equipment, Wenig’s was featuring high (85 percent) efficient gas heating technology to the public at a time when the industry average efficiency was only 60 percent.

According to Dwight Wenig, Wenig’s focus was on “providing the highest quality system that was available from the current technology in order to ensure our customers the highest performance at the lowest operating cost”. With personal system design, installation and service, Wenig’s “offered exceptional value and commitment to be the best,” he explained.

A larger family business, Lennox industries, also dedicated to high standards in the industry, selected Wenig’s Green Acres Inc in late 1975 over several local firms to represent the Lennox product line in Marion county.

With the energy crunch of the mid 1970’s and the escalating cost of home heating, Lennox introduced the most advanced breakthrough in gas heating technology, the Lennox Pulse Combustion Gas Furnace. Wenig’s installed the first of this new technology in its showroom for first hand experience and a working display for the public.
In 1982, in the Chateau Ridge area, Wenig’s installed the first of hundreds of the energy saving super high (97 percent) efficient pulse gas furnaces in 1984. Lennox was presented a special award “for energy innovation in recognition of a significant contribution to our nation’s energy efficiency” from U.S. Department of Energy.

“Leading The Way” is the motto of the new and expanded operation and, to keep up with the demand for energy efficient systems, Wenig’s hired and trained a growing work force starting in 1984 to the present number of 15 employees.


Gary Wenig receiving the Waterfurnace geothermal award in 1988

In 1987, Wenig’s Inc was chosen to represent the leader in geothermal heat pump systems, the WaterFurnace system, The Distributor WaterFurnace of Ohio, based in Columbus, selected Wenig’s for Marion and surrounding counties to design and install its systems. Wenig’s Inc. was selected after completing extensive training and certification from the manufacturer, WaterFurnace International.

These systems, featuring the 7 series, will provide the lowest heating cost with over 500 percent efficiency, most comfortable year round environment, super quiet operation and state-of-the-art components for smooth operation and long life.

“Quality and commitment, that’s the Wenig difference.” It is as important today as it was in 1970!