There are several common problems that can be costly and frustrating for consumers with their heating, ventilation, and air conditioning (HVAC) systems:

• Poor indoor air quality: This can be caused by a variety of factors, including dirty or clogged air filters, improperly sized or installed systems, or a lack of proper maintenance.
• Inefficient heating and cooling: An HVAC system that is not operating efficiently can result in higher energy bills and uncomfortable indoor temperatures.
• Poorly designed or installed systems: If an HVAC system is not properly designed or installed, it can lead to a variety of problems, including poor indoor air quality, inefficient heating and cooling, and costly repairs.
• Frequent breakdowns: HVAC systems that break down frequently can be a major source of frustration for homeowners, as well as a significant financial burden.
• High repair costs: Depending on the problem, HVAC repair costs can be quite high, particularly if the issue is not caught and addressed early on.

It's important to regularly maintain your HVAC system to minimize the risk of these problems. This can include replacing air filters, cleaning and servicing the system, and scheduling regular inspections with a professional HVAC technician.