If your furnace isn’t heating in the bitter cold of winter, or your central air conditioner quits in the sizzling heat of summer, you want it fixed–fast. You may be able to quickly get the heater or A/C working again yourself.
No matter the brand of furnace or air conditioner, our troubleshooting articles and symptoms pages can help you diagnose the cause of common problems such as why a furnace won’t ignite or why an air conditioner isn’t cooling well.
Once you’ve determined what’s broken, use the model search bar above to find the owner’s manual and illustrated parts list for your heater or A/C. Our step-by-step repair guides let you see how to replace the part and get the unit heating or cooling again.
