Krafft Service is a privately owned company that specializes in heating and air conditioning. It operates 24 hours a day. The services it provides are reliable, fast and efficient. It provides a variety of services, including air conditioning, furnace installation, heat pumps, water heaters, carbon monoxide installations, duct cleaning, humidifiers, electronic air cleaners and other installations. It has served residential clients in the Alexandria area for more than 60 years.