The answer to 'should I get system upgrade or' is that it depends on your specific situation and needs. If your current HVAC system is more than 10-15 years old, it may be worth considering an upgrade to a newer, more energy-efficient model. Newer systems can provide better temperature control, improved air quality, and lower energy bills.
However, if your current system is still functioning well and meeting your needs, a repair or maintenance may be a more cost-effective option. It's important to weigh the long-term benefits of an upgrade against the upfront costs. An HVAC technician can evaluate your system and provide personalized recommendations based on your home's size, usage patterns, and energy efficiency goals.