How can I tell if my HVAC system is losing efficiency?

The clearest signals: utility bills creeping up year over year with similar weather, longer run times to reach the same temperature, rooms that used to be comfortable turning hot or cold, excess humidity in summer, and a system that never seems to shut off during peak season.

Measure It, Then Fix It

Efficiency loss usually traces to dirty coils, low refrigerant charge, clogged filters, duct leakage, or aging components — all measurable and most fixable in a single maintenance visit. A tune-up typically restores 5–15% efficiency, which shows up directly on your next utility bill.

Your Local Air Quality and HVAC Experts

All Set HVAC serves Arlington Heights and the Chicago Northwest Suburbs as the local expert in air quality testing, HVAC maintenance plans, and new heating and cooling installations. We find the cause instead of chasing symptoms, and we stand behind every job with the All Set Guarantee. Schedule your $99 Air Score Test at (847) 807-6100 today.