Dual Temp Co., Inc.

Dual Temp Co., Inc. has kept Eastern Pennsylvania comfortable since 1970, building over five decades of mechanical expertise from its Allentown headquarters. The company holds a 4.9-star rating from 259 reviews, a volume of feedback that speaks to consistent, reliable service across the region. While the company handles substantial commercial and industrial work, Dual Temp maintains a dedicated residential division (Dual Temp Home Services) serving homeowners throughout the Lehigh Valley and into New Jersey. Their 24/7 availability means a heating failure at 2 a.m. gets the same attention as a planned summer AC installation.

What distinguishes Dual Temp from regional competitors is the breadth of in-house capabilities. The company self-performs HVAC installation, plumbing, pipefitting, and building automation work, reducing the coordination burden for property owners tackling multi-system projects. Their design-build team handles commercial construction from concept through commissioning, while the building automation division manages energy optimization and system integration for existing facilities. For residential clients, this depth translates to technicians who understand interconnected systems rather than treating heating and cooling as isolated problems.

Reviewers repeatedly name specific technicians, suggesting a culture worth noting. Patrick appears in multiple reviews for oil furnace service, with customers praising his thorough explanations and friendly demeanor, one homeowner specifically requested him for future visits. Todd, Joe, and Sean earned a 5-star review for a heating installation where the team provided electric heaters overnight while the new system was commissioned. For hot water heater installation, Iram and Chase received accolades for professionalism, while service manager Joe was called "100% attentive to customer requests."