(Image: https://keithair.com/wp-content/uploads/2021/07/HVAC-Contractors-Header.jpg)Fixing ventilation problems may require cleaning or unblocking ducts or vents, adding extra fans, or filtering indoor air. Heaters can include furnaces, boilers, and heat pumps, and they may get their energy from electricity, natural gas, propane, fuel oil, solar energy, or even wood. Some heaters, such as furnaces, use airflow to distribute heat throughout a building, while others may use radiant heating in the floors or walls. Is the best person to complete installations and repairs. BBB Accredited businesses have been screened by BBB and are held to higher standards for customer service, transparency and ethical business practices. We've been around Charlotte since 1944 and have established a proven track record for quality AC service and repair.