A+ Derr Heating, Cooling, Plumbing & Electrical provides reliable home services in Louisville and surrounding areas. We specialize in HVAC repair, air conditioning installation, furnace service, heat pumps, indoor air quality, plumbing, and electrical solutions. Whether you need fast AC repair, a new heating system, or help with plumbing or electrical issues, our experienced technicians deliver prompt, professional service you can trust. We focus on honest recommendations, quality workmanship, and getting the job done right the first time—keeping your home comfortable year-round.