A typical HVAC system uses a combination of a furnace or heater for warmth and an air conditioner for cooling. By circulating air through ducts and adjusting its temperature, the system maintains desired indoor comfort levels.

Loud noises can result from various issues, such as loose parts, a malfunctioning fan motor, or a compressor problem. It's best to have it inspected by a professional to pinpoint the cause and prevent potential damage.

There could be several reasons, including a malfunctioning thermostat, a blown pilot light, or issues with the furnace's circuit board. Scheduling a service visit will help diagnose the exact problem.

Thermostats control the temperature settings for your HVAC system. Modern programmable thermostats can improve energy efficiency by adjusting the temperature based on your daily routine.

Reduced cooling could be due to a variety of factors, including refrigerant leaks, dirty coils, blocked filters, or electrical issues. Regular maintenance can help prevent these problems.

Short-cycling, when your system frequently turns on and off, could be caused by an oversized system, a dirty filter, refrigerant problems, or thermostat malfunctions. An inspection can determine the cause.

Signs of leaking ductwork include uneven heating or cooling in rooms, increased energy bills, or the presence of dust and contaminants in the indoor air.

A clean air filter ensures efficient airflow, better air quality, and prevents strain on the HVAC system. Dirty filters can reduce efficiency and lead to system malfunctions.

A heat pump can both heat and cool a home by transferring heat from one place to another. In contrast, traditional systems use a separate unit for heating (furnace) and cooling (AC).

Ideally, your AC shouldn’t require frequent refrigerant refills, as it's a closed system. If you find the need to refill often, there might be a leak, which requires professional attention.