Six months ago we had Gibbon install a new furnace, the SLP98, and very recently had them back to install a new air conditioning unit and coil. We were extremely pleased with the job they did both times. Paul, the estimator, did not try to coerce us into buying any extras (as another company tried to in the past), the installers did their work efficiently and cleaned up their mess afterwards, and the electrician fully replaced any wiring involved (something that wasn’t done with the last new furnace we had installed). All of them were professional, courteous and personable. We would have no hesitation in recommending this company to others. We haven’t had the need to try out the new air conditioner as yet, but were very pleased with the furnace. We had a very cold winter and the house was cozy and warm at all times.