Our blog is coming soon! Please keep checking back with us. Thank you. For complete AC and heating system design and installation or for fast efficient emergency HVAC repair for your home or business, call Powell Mechanical today! Powell Mechanical is a commercial and industrial locally owned mechanical contractor offering repair, service and installation of refrigeration, piping, hydronic, HVAC, chillers, boilers, heat pumps, dehumidifiers, pod packs, walk-in coolers, and freezers. Including rooftop package units, ventilation and pipe and duct insulation.