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About Us

The Legacy Continues . . .

1973 was a lean year within the PHVAC business, wholesale prices were changing almost daily due to heavy inflationary pressures, new construction was almost at a stand still and Joe Bisignaro decided to take on the challenge and pack up the family in Chicago and move back to Philadelphia to start a rep business. Joe was twenty-nine years old with eight years experience within the industry. His time spent with Honeywell, Taco and In Bell & Gossett Company as their National OEM Sales Manager was invaluable.

Joe always admired the creativity and challenge of the rep business and set his goals to open shop in the Philadelphia market. Energy Industrial Associates or EIA as it became known officially started September 1, 1973 from absolute zero.

Through the years Joe literally pioneered the following lines within the Philadelphia Marketplace which were virtually unknown at the time,. Utica Boilers, Grundfos Pumps, Honeywell Braukmann Valves, G T Water Products, KAM H eat Exchangers, Coolenheat Coils, Ford Products, Rehau Radiant Heating systems, EMI ductless, minisplit air conditioning and the rebirth of Smith Residential and Commercial Boilers.

Following twenty exciting years and the building of many lifelong relationships, the decision was made to grow to the next level to address the demands of vendors.

These new demands required their representatives to expand their personnel and coverage to be successful within the commercial engineered products and bid spec marketplace.

Tozour Energy Systems, a very successful Trane Commercial Sales Office in King of Prussia with a major presence in the Philadelphia marketplace was a logical candidate to absorb EIA. This acquisition for Tozour Energy Systems also provided diversification within the Tozour family of businesses.

Joe Bisignaro & Bob Della Sala

April 1, 1993, TES Industrial Distribution Group, Inc. would continue with Joe as President and the continuation of his vision to grow the business and be the best that they could be.

Three years later, Joe hired Bob Della Sala, a former District Sales Manager for A.O. Smith Water Products Co., as Sales Manager to help manage the sales team and help grow the company. In eight years the company has doubled its sales and gross margin under the direction of Joe and Bob. One of the key factors was the relationship between Bob and Charlie Ritter of Ritter Assoc. Charlie had a very successful business for 17 years and decided it was time to join forces with Bob and TES to help build a strong agency. This acquisition was consumated on June 1, 2002 which meant that TES acquired and now represented all the Zurn family of companies.

The next logical step for TES and EIA begins January 1, 2006, the baton is being passed on to Bob Della Sala who has been with TES Total Energy Systems for ten years and most recently as Vice President.

Bob officially acquired all of the assets including the names, TES Total Energy Systems and EIA Energy Industrial Associates and renamed the company to "Keystone Sales & Associates".

Bob is well qualified for this next step in his career and has vowed to continue Joe's vision to grow the business and be the best that he could be while maintaining the high level of customer service that has contributed to the longevity of the business.

Keystone Sales & Associates is very proud to announce after 2 years in business our sales have grown 15%.

This was a total team effort by all of Keystone Sales & Associates, and we received high praise from some of our vendor partners.

Keystone Sales & Assoc.
Keystone Sales & Assoc.
Our new location at
103 Commerce Court, Pottstown, PA 19464

One of the keys to our success is the expansion of our plant to 20,000 sq. ft., which improved inventory and enhanced our warehousing capability. Keystone Sales & Associates is now the Mid-Atlantic and Northeast Distribution Center for the number one U.S. manufacturer of PEX piping systems: Zurn/PEX.

Keystone Warehouse

We stock thousands of products in
our spacious warehouse

Also, to add to our future growth we have acquired Rinear Associates. Hicks and Rinear Inc. was a well known, 50+ year family owned business in the metro Philadelphia market. Founded in April 1964 by Arthur J. Hicks and George Rinear. Art Hicks retired in Sept. of 1978 and George renamed the company "Rinear Assoc." In 1986, George passed the company on to his two sons Ken and Steve. Both of these gentlemen together have over 50+ years of experience with the company and added two quality vendors to the Keystone line-up: Bradley, Inc, which manufactures washfountains, showers, and emergency hospital and security plumbing fixtures; and Tri-Palm International, which manufactures electric water coolers and drinking fountains under the brand name of Oasis and SUNROC.

Keystone Sales and Associates is proud to announce the acquisition of Primary Sales on July 1, 2009. The new sales territory includes Lower New York State and all of New Jersey, Maryland and Virginia.
All assets and personnel will be joining the Keystone family along with new vendor partners Buderus, Bosch, Haydon, and Turbonics.

Left to Right: Jerry Paul - NJ Sales Manager; Ken Rinear - Commercial Sales; John McKeown - V.P. of HVAC/Shareholder; John Paul - NJ Sales; Bill Durkin - Metro. Phila. & South Jersey Sales; Artie O'Sullivan - Distributor and Dealer Sales.
Seated: Bob Della Sala, President

“I am very proud of our accomplishments and attribute our success to our valued Vendors, Customers and our Hard Working, Dedicated Associates.” . . . The Legacy Continues

Thank you,
Bob Della Sala
President -Keystone Sales & Associates

103 Commerce Court, Pottstown, PA 19464