Bottom line Packaged rooftop units run most Birmingham retail strips, mid-rise offices, and freestanding restaurants — this hub gathers the EHRP field guides for what an RTU is, how long it lasts, how to budget replace-versus-repair, and how often each tonnage class actually needs service under ASHRAE 180 baseline practice.
Call the dispatch line or submit the form — a human coordinator answers, not a call-center queue.
Request dispatch →Commercial HVAC only. Submit the form and a dispatch coordinator follows up by email. For active outages, call (205) 206-6606.
We email confirmation within business hours. For active outages, call the line above.