If the unit is over 10–12 years old, requires frequent repairs, or has rising energy bills, replacement is often more cost-effective.

Seasonal Energy Efficiency Ratio (SEER) measures efficiency; higher is better. ENERGY STAR qualified air conditioners have a SEER of at least 14.5.

Check filters monthly. Generally, replace fiberglass filters every 30 days and pleated filters every 90 days.

Common causes include a dirty, clogged air filter, low refrigerant levels, or dirty evaporator coils.

Frozen coils are usually caused by restricted airflow (dirty filter) or low refrigerant, causing the coils to get too cold.

For energy savings, set your thermostat to 78F / 26C when you are home, and higher when away.

Covering is not required as units are built for weather, but a cover can protect against falling debris, provided it is removed before operation.

A dirty filter, inefficient, old unit, or leaky ductwork can cause the system to run constantly, increasing costs.

A split system divides components into an indoor unit (evaporator coil/air handler) and an outdoor unit (condenser/compressor).

A tripped breaker often signals an overworked unit, a short circuit, or a failing motor/compressor.

If it is 10–15+ years old and needs major, costly repairs, replacement is likely more cost-effective.

High-efficiency furnaces typically have an AFUE of 95% or higher, saving significantly on energy bills.

This can be caused by a faulty thermostat, dirty filter, or a malfunctioning pilot light/flame sensor.

Late spring or early fall is ideal for better pricing, service availability, and potential rebates.

Yes, an annual professional tune-up in the fall is recommended to ensure safety, efficiency, and to check for carbon monoxide leaks.

A professional heat-load calculation, which considers home size, insulation, and windows, is necessary to prevent improper heating and premature failure