Kyle TX AC (888) 217-3739

An independent phone line that connects homeowners in Kyle, TX and nearby Hays County towns with heating and cooling contractors.

Kyle, TX · Hays County

Ice on the copper line or the attic unit in July

Ice on an air conditioner in a Texas summer means the coil is running below freezing. The two usual causes are too little air across the coil and too little refrigerant in it, and both get worse the longer the system keeps running.

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What to do right now

Turn the cooling off at the thermostat and set the fan to "on". The blower will move air across the coil and melt the ice in an hour or two. Running the compressor against a frozen coil risks damage, and the melt water is about to fill the drain pan in the attic, so check that the pan and drain are clear.

Why it happens

Airflow. A choked filter, a closed or blocked return, a failing blower motor or a collapsed duct means too little warm house air reaches the coil, so the coil keeps getting colder until moisture on it freezes.

Refrigerant. A system that is low on charge runs a colder, lower-pressure coil. Refrigerant is not used up, so a low charge means a leak. The leak does not close on its own, and each recharge without a repair is a short reprieve.

What a technician checks

Filter and blower first, because they are fastest to rule out. Then refrigerant pressures, superheat and subcooling once the coil has thawed, and a leak search if the charge is low. Systems installed before about 2010 may run on R-22, which has not been produced since 2020, so a leak on one of them is usually where the replacement conversation starts.

What to have ready when you call

  • Where the ice is: the line at the outdoor unit, the attic unit, or both
  • How long the system ran iced before you noticed
  • Whether the filter was changed recently, and its size
  • The install year and refrigerant from the outdoor data plate
  • Your address, ZIP code and attic access

Common questions

It ran fine after thawing. Is it fixed? Usually not. If the cause was refrigerant or a weak blower, it will freeze again on the next long hot afternoon.

Have the install year and the thermostat reading ready. Ask who is taking calls in your ZIP code today.

(888) 217-3739

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Other things a system does

A burning smell the first time the heat comes onA dusty smell the first time the heat runs in a Kyle, TX house is usually normal. An electrical smell, one that lingers, or a CO alarm is not.
A ceiling stain or water dripping under the attic AC unitA ceiling stain or dripping water under the attic air handler in Kyle, TX usually means a clogged condensate drain or a full drain pan. What to do and what to ask.
The AC runs all afternoon and the house keeps getting warmerThe AC runs nonstop and the house climbs past the setting every afternoon in Kyle, TX. What separates a weak system from a failing one, and what to report.
The furnace will not light on the first cold nightGas furnace in the attic won't light, or lights and shuts off, on the first cold front in Kyle, TX. What usually failed and what to tell the dispatcher.
The heat pump is stuck on aux or emergency heatHeat pump showing aux heat all the time in Kyle, TX, or stuck on emergency heat? What is normal on a cold night, what is a fault, and what to report.
The house still has the system the builder installedStill running the AC and furnace the builder installed in a 2000s Kyle, TX house? How to find its age and refrigerant, and when replacing it makes sense.
The outdoor heat pump is covered in iceOutdoor heat pump iced over in a Kyle, TX cold snap? Light frost is normal; a solid block is not. What defrost does, what fails, and what to do now.
The outdoor unit hums, but the fan does not spinThe outdoor AC unit hums but the fan won't start in Kyle, TX heat. Usually a capacitor; sometimes the compressor. What to do and when it means replacement.
The upstairs or one back room never cools downOne room or the whole upstairs stays hot while the rest of a Kyle, TX house cools. Attic ducts, returns and sizing: what a technician measures.

Towns this line covers

Kyle 78640Buda 78610Uhland 78640Niederwald 78640Mountain City 78610San Marcos 78666Driftwood 78619Dripping Springs 78620

Updated

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