Regular HVAC maintenance is recommended at least twice a year, ideally before the summer and winter seasons. This helps ensure your system runs efficiently, reduces the likelihood of breakdowns, and extends the lifespan of your equipment.

Most HVAC systems, including furnaces and air conditioners, last between 15 to 20 years with proper maintenance. Heat pumps can last around 10-15 years. Scheduling regular tune-ups and prompt repairs will help maximize their lifespan.

A programmable thermostat can help reduce energy costs by allowing you to set specific temperatures for different times of the day. It adjusts automatically based on your schedule, helping to save energy when you're away or sleeping.

Common signs include frequent repairs, inconsistent temperatures, unusual noises, and high energy bills. If your system is over 15 years old, it may be more cost-effective to replace it with a newer, energy-efficient model.

It depends on your system and household factors, such as pets and allergies, but generally, it’s best to change standard filters every 1-3 months. Regular filter changes improve efficiency and indoor air quality.