Carmel, IN

Midcontinent Independent System Operator (MISO)

For a power company supplying electricity to 42 million customers, we replaced outdated, inefficient HVAC rooftop units.

Aerila view of a crane lowering roof top units on an office building

Value Delivered

Midcontinent Independent System Operator’s (MISO) Indianapolis facility runs 24/7 and needed indoor air quality improvement.

EMCOR Services Shambaugh was able to replace all their inefficient rooftop units while the facility was occupied. It was critical that our coordination and scheduling helped to ensure continuous HVAC function without disruption to their day-to-day operations.

Our flexible responsiveness and ability to complete the project during full facility operation exceeded MISO’s expectations.

Client Objectives

Because MISO’s Indianapolis facility is continuously occupied, they wanted their inefficient, outdated HVAC units replaced to help improve indoor air quality and HVAC equipment reliability.


We replaced three 13-year-old rooftop units with one 85-ton and two 140-ton new rooftop units.

Client Background

MISO is an independent, not-for-profit organization that delivers safe, cost-effective electric power across 15 U.S. states and the Canadian province of Manitoba.