How often should I change my HVAC filter?
Many homes start with a 1–3 month interval, but filter type, pets, occupancy, air quality and system runtime can change that. Check the filter regularly and follow equipment and filter guidance.
EDUCATION + FAQ
Know what your system is telling you.
Practical guidance to help customers understand normal operation, maintenance and when professional service makes sense.
What is a normal temperature split?
Cooling performance is commonly evaluated by comparing return-air and supply-air temperatures under stable operating conditions. A single reading alone does not diagnose a system; airflow, humidity, equipment type and outdoor conditions matter.
Why can’t my home always hold 70° when it is 100° outside?
HVAC systems are sized for design conditions, not unlimited temperature pull-down. Extreme heat, solar gain, insulation, duct conditions, humidity and equipment capacity all affect indoor temperature.
When should HVAC equipment be serviced?
Seasonal preventive maintenance—typically before peak cooling and heating periods—helps identify developing problems and keep equipment operating as intended.
When is replacement worth considering?
Age, repair frequency, energy use, comfort, refrigerant type, parts availability and the cost of a major repair all matter. APEX can evaluate the system rather than relying on one rule of thumb.
What should I do before an emergency call?
Confirm the thermostat setting, check the breaker if safe to do so, inspect the filter, and note any unusual sounds, smells, leaks or fault codes. Do not repeatedly reset equipment if a safety issue is suspected.