Answers to Frequently Asked Questions About HVAC
Airtight SD provides trusted heating, ventilation, and air conditioning services in San Diego, CA. Below are answers to common questions from residential and light commercial customers. Our goal is to provide clear, honest information so you can make confident decisions about your HVAC system.
How often should HVAC systems be serviced?
Most HVAC systems should be serviced at least twice per year—once before the cooling season and once before the heating season. Regular maintenance helps improve efficiency, reduce breakdowns, and extend the life of your system.
Why is my air conditioner not cooling properly?
Common causes include low refrigerant, dirty filters, blocked airflow, or failing components. A professional inspection can identify the exact issue and restore proper cooling.
How long does an AC system last?
Most air conditioning systems last between 10 to 15 years, depending on usage and maintenance. Regular service can help extend the lifespan of your unit.
Do you service heat pumps and furnaces?
Yes. We service furnaces, heat pumps, packaged units, and water source heating systems for both residential and light commercial properties.
Do you offer free estimates?
Yes. We offer free estimates for new HVAC installations. We evaluate your property and provide clear recommendations so you can choose the best system for your needs.