Gatter & Diehl, Inc.

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Mechanicsburg, PA

Bedford, PA

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Tri-Valley School District

Mahantongo Elementary School 

Klingerstown, PA - 21,000 sq. ft. (MEP) - $3.7 million

The original Mahantongo Elementary School was constructed in 1958. The project renovations were comprised of the existing facility and an addition. Included was a complete replacement of the MEP/FP systems with high efficiency geothermal water source heat pump, while eliminating fuel oil entirely. A new thermal envelope assisted in reduction of the facility's overall energy consumption by over 787,000 KBTU annually, combined with new water-conserving plumbing fixtures which will reduce the facility's water consumption by 68% (101,500 gallons annually).


Gatter & Diehl also assisted the architect in applying for the Alternative & Clean Energy Grant which resulted in an award of $320,000 towards the project. The school was designed under the USGBC LEED program for Gold Certification.