Louisville can go from mild to bitter in a matter of days, and the first cold snap is a bad time to find out your furnace has a problem. A little prep in the fall catches most issues while they're still small. This checklist covers what you can safely do yourself, what a professional tune-up covers, and the warning signs that mean it's time to call. Why a fall furnace tune-up matters Your furnace sits idle for months, then is asked to run nearly nonstop. Dust, worn parts, and small airflow problems that were invisible [...]

If your air conditioner turns on and off repeatedly, learn the safe checks Louisville homeowners can make and when to call an HVAC professional.

Is your home still humid while the AC is running? Learn common causes, safe checks Louisville homeowners can make, and when to call an HVAC professional.

A hot upstairs and cool downstairs can have several causes. Learn the safe checks to try first and when to schedule HVAC service in Louisville.

If your AC is running but your Louisville-area home is still warm, start with a few safe checks and know when it is time to call an HVAC professional.

Why a Refrigerant Leak Should Never Be Ignored A refrigerant leak can quietly reduce your air conditioner's performance long before the system completely stops cooling. Refrigerant is the substance your HVAC system uses to absorb heat from inside your home and release it outdoors. When refrigerant levels drop, your system can no longer cool efficiently. At Glanz Buffat, we help homeowners in Louisville, Shepherdsville, St. Matthews, Middletown, Jeffersontown, and La Grange identify air conditioning problems caused by leaking refrigerant before they lead to larger repairs. Because low refrigerant can damage major system components, early diagnosis [...]

Understanding What the Condenser Coil Does Many homeowners ask, what is the condenser coil, especially when their air conditioner stops cooling efficiently. The condenser coil is a critical part of your outdoor air conditioning unit. Its job is to release the heat that your system removes from inside your home. Your cooling system works by pulling warm air from inside your house, removing the heat, and transferring that heat outside through the condenser coil. Without a properly working condenser coil, your air conditioner cannot cool your home effectively. At Glanz Buffat, homeowners in Louisville, Shepherdsville, [...]

Why Your AC Is Shaking or Vibrating If you notice your system is AC shaking or vibrating, it is usually a sign that something inside or outside the unit is not operating correctly. While a small amount of vibration is normal during operation, loud shaking, rattling, or movement is not. At Glanz Buffat, we often diagnose vibration-related issues in homes across Louisville, Shepherdsville, St. Matthews, Middletown, Jeffersontown, and La Grange. These problems can range from simple loose screws to more serious HVAC compressor issues. Understanding the cause early can help prevent costly air conditioning repair [...]

Why Your AC Filter Matters More Than You Think Many homeowners ask, how often should an AC filter be changed, especially when their system starts blowing weak air or their energy bills suddenly rise. Your air conditioner filter plays a major role in protecting your HVAC system by trapping dust, pollen, pet dander, and other airborne particles before they enter the equipment. A clean filter helps improve: Indoor air quality Cooling performance Energy efficiency System lifespan Airflow throughout the home At Glanz Buffat, we often see dirty filters contribute to avoidable air conditioning repair calls [...]