Everyone wants to feel comfortable at home, and Air Tech Heating wants to help. Our professional techs are more than happy to share their insight and answer your top cooling FAQs. Read through the Q&A below, and know that if you don’t find what you’re looking for, you can always call us for more help: 920-924-6742 in Fond du Lac or 920-239-4307 in Ripon.

What Should I Do If My Air Conditioner Freezes Up?
Typically, air conditioners freeze up when airflow is blocked, refrigerant levels are low, or there’s a mechanical failure. If your AC has ice on it, turn it off and let it defrost. Next, change the thermostat setting to “Fan” only—this helps dry the coils. Wait before setting the thermostat back to “Cool” and seeing if the AC is working again. While you wait, check if your air filter is dirty or if the unit itself is covered in debris.

How Do I Know If I Need to Replace My AC?
Your air conditioner may need replacing if it:

  • Is 15 or more years old
  • Causes your energy bills to skyrocket
  • Breaks down and needs repairs often
  • Doesn’t keep your home as cool as it used to
  • Uses R-22 refrigerant—this refrigerant is no longer manufactured, so a recharge may now cost up to 10 times more and not be worth the price

Why Isn’t My Air Conditioner Cooling My Home?
If your AC isn’t cooling properly, it’s likely there’s a mechanical failure that requires professional repair. When this happens, call the team at Air Tech right away—we’ll diagnose the problem and recommend a repair before starting any work, or let you know if it’s time for a new cooling system.

Do I Need Air Conditioner Maintenance?
Absolutely. Maintenance is the only way to keep your system running safely and efficiently year after year. It gives our experts a chance to inspect and clean your system, as well as find and fix any existing issues before they get worse. Annual service can even lower energy bills and help your system last as long as possible.

How Long Do Air Conditioners Last?
An AC’s lifespan typically lasts about 15 years, though some can run safely and reliably for 20 years or longer with routine maintenance.