Identify problems, understand risk level, estimate repair cost, and decide when replacement makes financial sense.
Home Systems Directory
Common Problems
- Heating
- Dirty or Clogged Filter - air cannot get in leading to overheating
- Dirty Flame Sensor - causes the furnace not to turn on or turn off prematurely
- Defective Heat Exchanger - harmful carbon monoxide gases are no longer being filtered from the systems' airflow
- Furnace Short Cycling - furnace flame sensor could be damaged, or the furnace could be overheating, triggering the temperature switch
- Cooling
- Dirty or Clogged Air Filters - air flow is restricted, increasing the energy needed to cool your home
- Refrigerant Leaks - leads to the system blowing warm air and frozen coils
- Ice on Evaporator Coils - caused by refrigerant leaks or lack of air, leading to loss of cooling
- Damaged Thermostat - leads to system not correctly turning on and off and poor cooling
- Ventilation
- Inefficient Airflow - Low air flow due to clogged filters and smaller size ducts
- Rattling Noises - buzzing, clanging, or rattling sounds due to worn-out fan motors
- Foul Odors - foul odors, dust, stale air due to lack of proper air exchange
- Excessive Humidity - condensation or mildew on furniture on the walls and windows
This site is a structured reference describing common residential system failures, typical repair ranges, and replacement thresholds based on typical service conditions.