AGL Heating & Air

AGL Heating & Air is a well-regarded heating, ventilation, and air conditioning (HVAC) company serving Charleston, SC, with 870 reviews and a perfect 5-star rating. They offer a range of services including AC Repair, Heating Repair, System Installation, Preventive Maintenance, working with both homeowners and businesses across the Charleston region. Their consistent high ratings reflect a commitment to quality work and reliable customer experiences. Frequently Asked Questions: Q: How often should I service my HVAC system in Charleston? A: Annual maintenance is recommended—ideally in spring before cooling season and in fall before heating season. Charleston's climate places unique demands on HVAC systems, so regular tune-ups improve efficiency, extend equipment life, and help prevent costly breakdowns during peak season. Q: What are signs that my HVAC system needs repair? A: Common warning signs include weak or uneven airflow, unusual noises (banging, squealing, or rattling), warm air from vents when cooling is set, unusually high energy bills, or the system cycling on and off frequently. If you notice any of these, it's best to call a certified technician promptly. Q: When should I replace vs. repair my HVAC unit in Charleston? A: If your system is over 10–15 years old, requires frequent repairs, or uses outdated refrigerant, replacement is often more cost-effective. Charleston homeowners should also consider energy efficiency improvements—modern systems can reduce energy bills by 20–40% compared to older units.