Cool ON Mechanical | We are a small family-owned and operated business, specializes in residential and commercial air conditioner installation services in Washington DC, including Maryland. Our technicians can install an array of brands' ductless, high-velocity, and zoned systems, replace furnaces, heat pumps, boilers, ducts, humidifiers, and water heaters to ensure optimal functioning and peak efficiency, also repair most systems manufactured by the biggest brands and provide annual maintenance services. The company's additional services include installing indoor air quality products, such as humidifiers and UV lamps. Our goal is to provide our customers with a prompt, friendly, professional service at a reasonable cost. We bring the comfort to your home.