Aaac Service Heating and air McDonough 770-875-4113

  Furnace blowing cold air resolved 1/29/2026 McDonough, GA   Aaac service heating and air  received a call for no heat 1/29/26. The  furnace was blowing cool air . It was heating earlier but stopped. There is a code flashing on the circuit board. It can be seen through the sight window. The label on the door say 33 lockout. The  furnace  main limit has tripped due to excess heat. It turns on the blower and the flames off. Do not reset the furnace before fixing the issue. The fan motor was spinning too slow allowing to much heat to remain in the furnace . The capacitor tested 3.8 but should be 7.5. This is not the only thing that will cause a lockout, today it was the issue. The motor was tested and is good. After replacing the cap the issue was solved. Check for a dirty filter and/or closed vents. These can put a strain on the motor and capacitor. You must put the right size capacitor back in. If you don't know the size it is on the label of the motor. Th...

The furnace is 35 years old and needs a circuit board that’s no longer made. The replacement board requires extra parts to make it compatible, with repairs estimated at over $500. On the plus side, the heat exchanger is still in good shape. On the downside, the draft motor and blower motor are also 35 years old. Aaac Service Heating and Air recommended replacing it, but since we’re not a high-pressure sales business, we provided a repair quote as well. The furnace was repaired, and hopefully it will serve them well for a long time, though the old parts aren’t covered in any way.  These pictures are not of same unit. It's all I had.  What does this link button do.

 We are open for furnace repair today. Same day service available. 

 The furnace ran for 5 minutes but will shut off before reaching the temperature on the thermostat.  You should turn it off and call for service. This could cause other parts to break. The main limit is telling the furnace to shut off due to high heat. The limit could be bad or it's doing its job and it's a bad gas valve or an air flow issue. Aaac service heating and air repaired this on Saturday.  #furnacerepair #hvac #furnace #heating #hvacrepair #hvacservice #hvactechnician #airconditioning #heatingrepair #acrepair #heatingandcooling #hvaclife #furnacemaintenance #furnaceinstallation #hvactech #hvacmaintenance #hvacinstallation #hvaccontractor #hvacinstall #heatpump #cooling #ac #airconditioningrepair #airconditionerrepair #airconditioner #furnacetuneup #heat #heaterrepair #airconditioninginstallation #furnaceinstall

 This furnace in McDonough would only blow cold air. It seemed like it would try to run but never get to the flames. It tried 3 times then just blows cold air. The sensor was showing no flame so the furnace will purge and just blow air. The system is doing what it is designed to do when the flames do not come on. The ignitor was replaced, and it works great now. Aaac service heating and air has same day service in Henry County.  #furnacerepair #hvac #furnace #heating #hvacrepair #hvacservice #hvactechnician #airconditioning #heatingrepair #acrepair #heatingandcooling #hvaclife #furnacemaintenance #furnaceinstallation #hvactech #hvacmaintenance #hvacinstallation #hvaccontractor #hvacinstall #heatpump #cooling #ac #airconditioningrepair #airconditionerrepair #airconditioner #furnacetuneup #heat #heaterrepair #airconditioninginstallation #furnaceinstall