Frequently Asked HVAC Questions
Whether you're dealing with an air conditioner that won't cool, wondering how much a new HVAC system costs, or simply looking for maintenance tips, we've answered some of the most common questions homeowners ask. Air Innovations proudly serves Prairieville, Gonzales, Baton Rouge, Geismar, St. Amant, Sorrento, Denham Springs, Walker, and surrounding communities throughout Ascension Parish and Livingston Parish.
1. How much does an HVAC service call cost?
HVAC service call costs vary depending on the type of system, the problem being diagnosed, and whether repairs are needed. At Air Innovations, we provide honest, upfront pricing before any work begins, so you'll always know exactly what to expect. Our goal is to diagnose the problem accurately and recommend only the repairs your system actually needs.
2. Why is my air conditioner running but not cooling?
If your air conditioner is running but the house isn't getting cooler, several issues could be responsible. Common causes include dirty air filters, low refrigerant, frozen evaporator coils, clogged drain lines, dirty condenser coils, bad capacitors, faulty contactors, or compressor problems. During Louisiana summers, these issues can quickly make your home uncomfortable, so it's best to have the system inspected before additional damage occurs.
3. How much does it cost to replace an AC unit?
Every home is different, so the cost of replacing an air conditioner depends on the size of your home, the efficiency of the equipment, existing ductwork, electrical requirements, and installation complexity. We provide free replacement estimates and help homeowners throughout Prairieville, Gonzales, Baton Rouge, and the surrounding areas choose the system that offers the best long-term value.
4. How long does an air conditioner last?
Most central air conditioning systems last between 12 and 15 years when properly maintained. Louisiana's long cooling season and high humidity often cause systems to work harder than they do in cooler climates. Regular maintenance, clean filters, and prompt repairs can significantly extend the life of your HVAC equipment.
5. How often should my HVAC system be serviced?
Most manufacturers recommend servicing your HVAC system twice each year—once before summer and once before winter. Preventive maintenance helps improve efficiency, reduce unexpected breakdowns, lower energy costs, and extend the life of your heating and cooling equipment.
6. What size AC unit do I need?
Choosing the right size air conditioner requires more than simply measuring square footage. A professional load calculation considers insulation, windows, ceiling height, sun exposure, and your home's layout. An oversized system can short cycle, while an undersized system may struggle to keep up during Louisiana's hottest days.
7. Why is my AC freezing up?
An air conditioner usually freezes because of restricted airflow or low refrigerant. Dirty filters, blocked evaporator coils, blower motor issues, or refrigerant leaks are some of the most common causes. If you notice ice forming on your indoor or outdoor unit, turn the system off and schedule service before continuing to run it.
8. Why is my air conditioner leaking water?
Water leaking around your indoor unit is commonly caused by a clogged condensate drain line, cracked drain pan, frozen evaporator coil, or improper installation. Ignoring a leak can lead to water damage, mold growth, and costly repairs if left unresolved.
9. How often should I change my air filter?
Most homeowners should replace their air filter every one to three months. Homes with pets, smokers, allergies, or heavy HVAC use may require more frequent filter changes. Clean filters improve airflow, reduce energy costs, and help protect your equipment.
10. Should I repair or replace my air conditioner?
If your air conditioner is more than 12 years old, requires frequent repairs, or uses outdated refrigerant, replacement may save money over time. We'll inspect your system and help you determine whether repairing or replacing it is the better investment based on its condition and expected lifespan.
11. What is the average price for AC repair?
The cost of AC repair depends on which component has failed. Simple repairs such as replacing a capacitor or contactor typically cost less than replacing major components like evaporator coils or compressors. We provide upfront pricing before beginning any repair so there are never surprises.
12. What temperature should I set my thermostat in the summer?
For most Louisiana homes, 78°F while you're home offers a good balance between comfort and energy efficiency. Raising the temperature while you're away can help reduce monthly cooling costs without sacrificing comfort.
13. Why is my electric bill suddenly so high?
A sudden increase in your electric bill often means your HVAC system is working harder than it should. Dirty filters, refrigerant leaks, failing capacitors, dirty coils, duct leaks, aging equipment, or thermostat issues can all reduce efficiency and increase operating costs.
14. What is the 20-degree rule for air conditioners?
The 20-degree rule means that most properly operating air conditioners cool the air approximately 18 to 22 degrees below the temperature of the air entering the return vent. HVAC technicians use this temperature difference as one indicator of overall system performance.
15. What are signs my AC compressor is failing?
Warning signs include warm air coming from the vents, loud buzzing or grinding noises, difficulty starting, tripped breakers, poor cooling performance, and unusually high energy bills. Compressor issues should be diagnosed promptly to help prevent more extensive system damage.
16. How long does it take to install a new HVAC system?
Most residential HVAC installations can be completed in one day. Larger homes, ductwork modifications, electrical upgrades, or custom installations may require additional time depending on the project.
17. Why is my AC blowing warm air?
If your air conditioner is blowing warm air, it may be caused by a dirty filter, low refrigerant, a frozen coil, a bad capacitor, a faulty thermostat, or an outdoor unit that is not running properly. In Louisiana heat, this can quickly turn into an uncomfortable situation. If basic checks like the thermostat, breaker, and filter do not solve the problem, it is best to schedule professional AC service before more damage occurs.
18. What are the signs of low refrigerant?
Common signs include poor cooling performance, frozen evaporator coils, ice on refrigerant lines, longer run times, higher electric bills, and warm air from the vents. Low refrigerant almost always indicates a leak that should be professionally repaired.
19. Why won't my thermostat work?
A thermostat may stop working because of dead batteries, blown fuses, wiring problems, tripped breakers, or internal HVAC electrical issues. Diagnosing the cause quickly helps restore comfort and prevents unnecessary downtime.
20. What is the average lifespan of an HVAC system?
Most HVAC systems last between 12 and 20 years depending on equipment quality, HVAC maintenance history, installation quality, and how heavily the system is used throughout the year.
21. How do I know if my AC capacitor is bad?
A bad capacitor often causes the outdoor fan or compressor to struggle to start, produces humming noises, or causes the system to shut down unexpectedly. Replacing a failing capacitor early can often prevent more expensive repairs.
22. Is it normal for my AC to run all day?
During the hottest Louisiana afternoons, it's normal for an air conditioner to run for extended periods. However, if it never reaches the thermostat setting or runs constantly even during mild weather, the system may need professional inspection.
23. Why does my air conditioner smell musty?
Musty odors are commonly caused by moisture, mold, mildew, bacteria, or dirty evaporator coils. Cleaning the system and correcting drainage problems usually eliminates the odor.
24. What SEER rating should I buy?
Higher SEER-rated systems use less electricity and can reduce monthly utility costs. We'll help you choose the right balance of efficiency, comfort, and budget based on your home and your long-term energy savings goals.
25. Are heat pumps a good choice in Louisiana?
Yes. Heat pumps perform very well in Louisiana because winters are generally mild. They provide both heating and cooling while using less energy than many traditional heating systems.
26. Why is one room hotter than another?
Uneven temperatures are often caused by poor airflow, duct leaks, insulation problems, blocked vents, improper duct balancing, or incorrectly sized HVAC equipment.
27. What maintenance can homeowners do themselves?
Homeowners should replace air filters regularly, keep outdoor units free of leaves and debris, keep supply and return vents open, and monitor the condensate drain. Professional maintenance should still be performed twice each year for optimal performance.
28. How can I lower my cooling bill?
Replacing dirty filters, sealing air leaks, improving insulation, installing a programmable thermostat, scheduling regular HVAC maintenance, and upgrading older equipment can all help reduce cooling costs.
29. What should I do if my AC stops working?
First, check your thermostat settings, replace a dirty filter if needed, verify the breaker hasn't tripped, and make sure the outdoor unit has power. If the system still isn't cooling, it's time to schedule a professional diagnosis.
30. How do I choose the best HVAC contractor?
Choose a licensed and insured HVAC contractor with strong local reviews, transparent pricing, experienced technicians, quality workmanship, and a reputation for honest recommendations. A local company that stands behind its work can provide better long-term service and support than companies focused on quick sales.
Still have HVAC questions?
Air Innovations is here to help with honest AC repair, HVAC maintenance, heating service, and system replacement throughout Prairieville, Gonzales, Baton Rouge, Geismar, St. Amant, Sorrento, Denham Springs, Walker, Ascension Parish, and Livingston Parish.