Yes, the holidays can put extra strain on your HVAC system. Increased occupancy, holiday cooking, and extra decorations can all contribute to a higher heat load, making your system work harder to maintain a comfortable temperature. This can be particularly noticeable if your system is older or hasn't been properly maintained. 

No, a bigger HVAC system is not necessarily better. In fact, an oversized HVAC system can lead to problems like short cycling, uneven cooling, higher energy bills, and reduced dehumidification. It's crucial to have an HVAC system that is appropriately sized for your home's specific needs based on factors like square footage, insulation, and local climate. 

Hiring a licensed and insured HVAC or plumbing company offers crucial legal, financial, and quality-of-service protections. It ensures the company is qualified, adheres to regulations, and carries insurance to cover potential damages or injuries during the job, saving you from potential liabilities and costly repairs. 

A well-maintained HVAC system can be expected to last between 15 and 25 years. However, the lifespan can vary significantly based on factors like usage, climate, maintenance, and the type of system. 

In a house, an air filter, usually part of the HVAC system, primarily works to clean the air by trapping dust, pollen, pet dander, and other airborne particles. This helps improve indoor air quality and protects the HVAC system components from damage. 

Regular HVAC maintenance, including furnace tune-ups, is crucial for efficiency, safety, and longevity. It helps prevent costly repairs, extends the system's lifespan, and ensures optimal performance, leading to lower energy bills and a safer home environment.