HSA Mechanical Inc - Allentown

HSA Mechanical traces its roots to 1932 under the original name Herman Sommer and Associates, now operating as a commercial and industrial mechanical contractor in Allentown, Pennsylvania. The company has spent nearly four decades serving the Lehigh Valley, maintaining a 4.6-star rating from 10 customer reviews. HSA Mechanical operates around the clock, every day of the week, providing HVAC repair, replacement and planned maintenance for facilities ranging from schools and healthcare buildings to manufacturing plants and research campuses. Reviews specifically name Allentown and surrounding Lehigh Valley communities as the primary service territory.

What distinguishes HSA Mechanical is its demonstrated ability to work across technology generations. The company bridges older traditional systems like boilers and chillers with newer variable-refrigerant mini-split setups and building automation controls, a pairing rarely handled by a single contractor. HSA lists XOI Technology as a specialized offering, and its Energy Optimization and Operational Assessment services target facilities looking to reduce utility costs. The Design Build Retrofit team handles new installations and full system replacements for clients undergoing facility upgrades or conversions.

Customer reviews reveal specific technician experiences that shaped perceptions of the company. Daniel Fisher called out a technician as very knowledgeable and straightforward, noting the bid beat competitors while remaining honest about scope. Kimberly Calderone, representing a school district client, praised an account manager who checked in proactively and reported incredible response times during service calls. Karla Lyle described a multi-project relationship spanning new HVAC unit installations and dual boiler replacements, handled through the company's preventative maintenance program. Eileen Sterrett appreciated that every person she encountered, from the first phone contact to the service technicians, delivered what she called fantastic customer service.