Ice on your AC in July? Turn it off first.
It sounds backward, but one of the most common summer calls we get from Calumet City is an air conditioner covered in ice. The copper line at the outdoor unit is frosted, the vents push weak, warm air, and sometimes there’s water dripping around the furnace as the ice melts.
If that’s you, switch the thermostat from COOL to OFF and set the fan to ON. That lets the coil thaw. Running a frozen system can send liquid refrigerant back to the compressor, and the compressor is the part you most want to protect. Don’t chip at the ice, either. The fins and copper underneath bend easily, and a punctured line turns a small repair into a big one. Then give us a call.
Why an AC freezes up
The indoor coil needs a steady flow of warm house air across it. Take that away and the coil drops below freezing. The usual causes:
- A clogged filter, which is the most common cause by far
- A weak blower capacitor or failing blower motor moving too little air
- Closed or blocked supply vents and return grilles
- A dirty evaporator coil
- Low refrigerant from a leak, which needs a real repair, not just a top-off
We find out which one it is before we touch anything. If it’s low refrigerant, we look for the leak instead of adding more and leaving. A frozen coil also can’t pull moisture out of the air, which is why the house can feel sticky before it feels warm.
Across the state line from Munster
Calumet City borders Hammond, and our shop in Munster is a short drive away. We cross the Illinois line for AC calls here the same way we cover our Indiana towns. A real person answers any hour, gives you the diagnostic fee, and gets a tech on the road. Calumet City gets the same people and the same written quote as Munster does.
The rules don’t change on the Illinois side. The repair is quoted first. The price goes on paper before any work starts. Our techs aren’t on commission, and replacement only comes up when the repair costs more than the system has left in it. When it does, you see both numbers and decide.
Calumet City homes
A lot of Calumet City is older brick bungalows and small ranches, many with a basement furnace and an AC coil that was added later. Return air is often limited to one or two grilles, so a dirty filter chokes airflow faster than it would in a newer house. That’s one reason freeze-ups are so common here, and one reason a cheap filter change can save you a service call. If your home has a single return grille, keep furniture and curtains away from it.
What a visit looks like
- You call. A person answers, day or night, and gives you the diagnostic fee.
- We thaw and test. If the coil is still frozen, we thaw it safely, then check airflow, the blower, the filter and the refrigerant charge.
- Price on paper. You see the repair price in writing before any work starts.
- We fix it and watch it run. We make sure the coil stays clear and the air coming out is cold.
Call us when
Call if the coil freezes again after it thaws, the vents stay warm with a clean filter, water is pooling around the furnace, or the outdoor unit hums without the fan spinning. If the house feels muggy more than hot, read why the house is humid with the AC on. For warm air with no ice, see why an AC runs but won’t cool.
Hot house? Call (219) 555-0142, or use the form below for a callback. See AC repair across the area, or check all the towns we serve, on both sides of the state line.
