PJ MAC HVAC Service & Repair of Upper Darby offers 24-hour heating and air conditioning repair, installation and maintenance services to residential and commercial customers. As a local, family-owned and operated HVAC contractor, we offer free install estimates on all brands of heating and cooling systems such as Lennox, Carrier, Trane, Goodman etc... If your AC is blowing hot air, or your furnace is not coming on, call our rapid response emergency HVAC repair service. We also install humidifiers, dehumidiers, mini-split systems, thermostats, and air purifiers. Call our Upper Darby HVAC company today.