Here are the most common heating system repairs that our team at Earl’s sees on service calls in Lubbock: -Age or lack of maintenance: gas furnaces and heat pumps typically have a lifespan of 15 to 25 years with proper maintenance. Ductless mini-split systems vary, with some models lasting up to 20 years, though many environmental and maintenance factors can reduce that lifespan. -Flame sensor malfunctions: This issue can cause the furnace to shut off shortly after ignition or prevent it from starting altogether. This is because the flame sensor is responsible for detecting the presence of a pilot flame and sending a signal to the control board to keep the gas valve open. -Cracked or damaged igniter: If the furnace’s igniter doesn’t create a spark, your system won’t start heating the air, and you may notice your furnace is blowing cold air. Improper gas pressures: If your home’s gas pressure is too low, this could result in incomplete combustion and low performance. If it’s too high, the heat exchanger could be overloaded, leading to early failure. Earl’s can perform gas pressure testing to discover any potential leaks or imbalances. -Damaged blower motor: your furnace’s blower mechanism is responsible for moving heated air into your air ducts. If your utility bill is through the roof but you’re not getting warm air, this could be the culprit. -Electronic failure or malfunction: From faulty thermostats to improper fuses to loose wiring, electrical problems are a frequent cause of shorts and heater failures.