Is Frost Nipping at Your Home Heat Pump? Why It’s Happening and What to Do

4 Simple Ways You Can Cut Cooling Costs in Your Home

Your heat pump may ice up in the winter; it’s common enough. Icing happens when the water in the outdoor air comes into contact with a surface that’s below its dew point, such as your heat pump condenser, and it condenses into water. The water freezes when the outdoor air is below freezing. While a slightly frosty heat pump condenser unit is to be expected, it’s not normal for it to be completely encased in ice. Complete encasement is a sign of a malfunctioning unit. The problem of an excessively frosty heat pump must be fixed as soon as possible to prevent high energy bills and damage to the unit.

Defrosting Cycle

A properly functioning heat pump condenser unit will have a defrost cycle to defrost the coils periodically. Defrosting ensures that the unit runs efficiently. When coils are covered in ice, they can’t transfer heat effectively. Different heat pump models have different ways of determining when to defrost. Some have controls with temperature sensors while others are mechanical.

What Causes a Frosty Heat Pump?

  • Snow or leaves blocking the outdoor coil could cause the airflow across them to be restricted, which will cause freezing up.
  • If the condenser platform is sinking, there’s nowhere for the ice to melt and drain. This results in water accumulating inside the unit.
  • Water from a leaking gutter dripping into the condenser unit can cause ice to accumulate and block the flow of air.
  • Mechanical or electronic defects such as a malfunctioning defrost control or timer, or a worn out motor could be the culprit.
  • Insufficient refrigerant charge or restricted refrigerant flow is another common cause of a frosty heat pump.

If you notice a frosty heat pump this season, contact Bruce Thornton Air Conditioning. Our HVAC experts know how to maintain and repair your heat pump. We’ve provided HVAC services to the South Plains area for more than 50 years and can ensure your home stays comfortable, even during the coldest months of the year.

Serving Areas

We are proud to offer service to all of Lubbock, TX and surrounding areas, including:

  • Abernathy
  • Amherst
  • Anton
  • Brownfield
  • Crosbyton
  • Dickens
  • Floydada
  • Hale Center
  • Idalou
  • Lamesa
  • Levelland
  • Littlefield
  • Lorenzo
  • Lubbock
  • Meadow
  • Morton
  • Muleshoe
  • New Deal
  • New Home
  • O’Donnell
  • Olton
  • Petersburg
  • Plainview
  • Post
  • Ralls
  • Ransom Canyon
  • Ropesville
  • Shallowater
  • Slaton
  • Smyer
  • Southland
  • Sundown
  • Tahoka
  • Tokio
  • Welch
  • Whiteface
  • Wilson
  • Wolfforth
  • Woodrow


(806) 589-1014 - Call us today!

24-Hour Plumbing, Air Conditioning & Heating Repair

With more than 50 years’ experience providing heating, ventilation and air conditioning services for residential and commercial customers, we at Bruce Thornton Air Conditioning are proud to be the South Plains TX area’s comfort specialists. We specialize in system replacement, preventive maintenance and repair, all with the goal of keeping your heating, cooling, refrigeration and plumbing systems functioning at maximum efficiency.


We are your one-stop provider.

We are always at your service.

We’re highly qualified.

We do up-front pricing.

We stand behind our work.

What Customers Love About Us

Michael Villarreal
Michael Villarreal
January 15, 2024
Had Tony come in (BROSIG'S Custom Taxidermy) he was fast,professional, friendly and informative. Got us back up and running
CM Livingston
CM Livingston
December 20, 2023
I am so thankful for BTAC and the guys they sent out to repair a major hot and cold water leak under our slab. They knew what they were doing, and were very professional and polite, and I might add compassionate. They are an asset to the company!
Jason Crites
Jason Crites
August 26, 2023
Joshua K is amazing he came out after hours and had a simple fix that got our AC fixed right away!
Rick Rodriguez
Rick Rodriguez
August 13, 2023
To the credit of BTAC and it's management, I had a frustrating experience with them on a call out for a problem with a blower motor. I made my opinion known and contacted them through email to express it. They responded, sent out new technicians and made it right. That doesn't happen very often these days, and it's good to see a company show it cares about that. If you call these folks to come out, and your experience is what you expected, let them know, they'll work with you. 👍
James Voyles
James Voyles
July 27, 2023
Luis was an incredible technician. Very professional and friendly! Can’t recommend him enough. Also prompt service, thanks for the help!
Cad Dunlap
Cad Dunlap
June 8, 2023
I'm new to the Lubbock area and Bruce Thornton Air Conditioning was the first company we called. They had someone at our house to help in an hour and the service man had our AC fixed in 30 minutes. Their customer service was great from the receptionist who answered the phone to the hvac professional who fixed our AC!
June 1, 2023
Luis was great. Fast, efficient and knowledgeable. Thank you!

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Lubbock HVAC Professionals

Contact Us

Bruce Thornton Air Conditioning
128 Slaton Road
Lubbock, Texas 79404


Phone: (806) 589-1014

State HVAC License: TACLA00112807C
State Plumbing License: M40449

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Emergency Plumbing, A/C, & Refrigeration Repair Services in Lubbock, TX - Call Us Now!