Our licensed and insured HVAC contractor has been serving the Allen, TX area since 1969, providing trusted HVAC services for residential and commercial customers. With decades of experience, we handle HVAC installation, HVAC repair, and HVAC maintenance for all makes and models, specializing in Goodman, Trane, and Carrier systems. Our services include heating and cooling solutions, air conditioning repair, furnace installation, boiler repair and maintenance, heat pump installation, thermostat installation, and HVAC inspections. We also improve indoor air quality through duct cleaning services, air filtration systems, and ductless mini-split systems. We offer energy-efficient HVAC solutions, water heater replacement estimates, and expert support for commercial HVAC systems, including walk-in freezer and commercial refrigerator troubleshooting. Call Dennis Moon Heating and Air Conditioning for reliable, long-lasting comfort solutions.