Common HVAC Repairs

Advantage Air HVAC • May 22, 2023

No matter the season, your HVAC system is essential for keeping your home comfortable. Even if you don’t need to change the indoor temperature, your HVAC system will circulate air and remove moisture. Regular maintenance is the best way to keep your system in good working order, but it’s not a guarantee that your HVAC system won’t need repairs. The experienced Advantage Air HVAC technicians can handle every repair from common to complex.

An HVAC technician servicing an outdoor HVAC unit

The Seven Most Common HVAC Repairs

Thermostat

The thermostat lets your HVAC system know when it’s time to begin heating or cooling your home, so the whole system is affected when it’s on the fritz. Fortunately, replacing a thermostat is straightforward and cost-effective. If your home has a manually operated thermostat, we recommend upgrading to a smart one for convenience and to increase your home’s energy efficiency.

Pilot or Ignition

The ignitor creates the spark that begins the combustion process, allowing your furnace to heat your home. Many things, including a dirty pilot, a broken sensor, or a damaged thermocouple, can cause issues with your pilot or ignition. It’s always best to leave problems with these components to professionals familiar with safety protocols surrounding natural gas and electricity.

Unusual Sounds

Even the newest HVAC system will make some noise while it’s working. When unusual noises develop, it’s usually due to a mechanical or airflow issue. The problem is often as simple as replacing a belt or other small mechanism.

Dirty Coils

When your condenser or evaporator coils collect dirt and debris, they can become clogged. Clogged coils reduce your HVAC system’s efficiency and make it harder to heat and cool your home. A quick cleaning will have your HVAC running like new again.

General Wear & Tear

All HVAC systems fall victim to the progression of time. One of our most frequent services is repairing minor issues that are due to simply using the system daily.

Blower Fans

Many customers call us because the blower fan in their HVAC won’t stop running. The first thing to check in this scenario is your thermostat; make sure it’s not set to “Fan.” If that’s not the case, the problem could be that the fan relay connected to the blower is malfunctioning. We check all relays and safety switches to solve the problem.

Air Filters

Staying on top of your HVAC’s air filters is one of the easiest and most important ways to keep it working at optimal performance. Clogged filters make the system work harder and also affect airflow. Reduced airflow means your HVAC must run more heating or cooling cycles to reach your desired indoor temperature.

HVAC Repairs near Lexington, KY

Advantage Air HVAC has been proudly serving the community since 2007, and our team has more than 32 years of collective experience. We offer residential, commercial, and geothermal heating and cooling services. Contact us today with your HVAC concerns. Our office is in Lexington, KY. We’re happy to serve Versailles, Winchester, Georgetown, Paris, Wilmore, Nicholasville, and the surrounding area.

Your Guide to Efficient HVAC for Office Buildings

December 11, 2025
Scheduling routine maintenance and installing smart controls keep HVAC for office buildings running efficiently. Regular upkeep, system upgrades, and proper vent placement improve air flow and temperature consistency. Monitoring indoor air quality ensures a healthier workspace while training staff on energy-saving practices reduces unnecessary costs.

HVAC Service Agreements in Lexington: Are They Worth the Investment?

November 15, 2025
As a homeowner wondering if agreements for HVAC service in Lexington, KY, are worth it, the answer is yes; they are. They can help ensure your heating, ventilation, and air conditioning system undergoes regular tune-ups, which can help keep it efficient, reduce its odds of suffering from premature failure, and extend its lifespan.

Boost Comfort with Commercial HVAC Maintenance Tips

October 15, 2025
Commercial HVAC maintenance involves regular care of your heating, ventilation, and air conditioning systems. This measure ensures optimal performance, prevents breakdowns, and extends the equipment's lifespan. Regular preventative maintenance can reduce energy costs while improving indoor air quality. According to the U.S. Department of Energy, commercial buildings consume 13.6 quads of electricity . Your HVAC system is the biggest energy consumer in your building. This makes proper maintenance essential for your bottom line.

Common Furnace Repair Mistakes Homeowners Make in Lexington, KY-and How to Avoid Them

September 15, 2025
As the colder months approach, every homeowner in Lexington, KY needs to ensure their heating system is functioning efficiently. However, if your furnace has an issue, there are various mistakes you're likely to make when trying to repair it.

The Homeowner's HVAC Emergency Checklist: What to Do Before You Call

August 15, 2025
When your home suddenly feels like an oven in summer or an icebox in winter, panic can set in quickly. But before picking up the phone for emergency HVAC repairs, there's a smarter way to respond. This isn't just about convenience - it's about saving time, avoiding unnecessary expenses, and protecting your system from further damage. Acting calmly and using a strategic checklist puts the power in your hands, even during an HVAC emergency. You don't need to be a pro - you just need to know what steps to take. Here's how you can troubleshoot effectively and know exactly when to call for help.
A brand-new, modern, high-efficiency AC unit outside of a residential home near Lexington, KY

How Do I Know When to Replace My AC?

By Advantage Air HVAC • June 18, 2025
Explore five signs it might be time to replace your home’s air conditioner. Contact Advantage Air HVAC for air conditioner replacement near Lexington, KY!
A furnace exhaust pipe letting out steam into the dry air in a snowy backyard at Advantage Air HVAC

What Are Common Causes of Dry Air in Homes & How to Fix It?

By Advantage Air HVAC • January 13, 2025
Discover the common causes of dry air in your home and ways you can fix them. Contact Advantage Air HVAC near Lexington, Kentucky, to help this winter!
A new heat pump installation near Lexington, KY, outside of a beautiful red brick home at Advantage

Your Heat Pump Installation, Repair, and Replacement Guide

By Advantage Air HVAC • December 4, 2024
Discover if it’s right for your home to have a heat pump installation near Lexington, KY, including repairs and replacements. Contact us to learn more!
Geothermal heat pump, part of a geothermal energy heating and cooling system, in a commercial space

A Simple Guide to Geothermal Energy Heating and Cooling

By Advantage Air HVAC • November 4, 2024
Learn about what geothermal energy heating and cooling for your home is and its benefits. Contact Advantage Air HVAC in Lexington, KY, today!
A new build home's spacious crawl space with visible pipes, duct work, and vents at Advantage Air HV

Crawl Space Heaters in Lexington, KY: What You Need to Know

By Advantage Air HVAC • October 7, 2024
Learn more about a crawl space heater for your home near Lexington, Kentucky. Contact Advantage Air HVAC today for more information or to request a quote!