Bobby and I started, then the A team showed up to finish

Split System w/ line set

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Another Extremely Dirty Coil

Complaint: not keeping up
Resolution: wash coil

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Brown’s Arctic Air YouTube

Check out our YouTube page that shows what we do! Here’s the link:

Our YouTube shows the work we have been doing. It entails our jobs, installs, change outs, and duct systems. We arrive at a job, get the game plan together and tackle it professionally and clean up when we are done. Our customers are very happy! They give us rave reviews and that makes our work so worthwhile.


What is Defrost Mode?

What is defrost mode and why does this happen?

When a heat pump is operating in the heating mode or heat cycle, the outdoor air is relatively cool and the outdoor coil acts as an evaporator. Under certain conditions of temperature and relative humidity, frost might form on the surface of the outdoor coil. The layer of frost will interfere with the operation of the heat pump by making the pump work harder and, therefore, inefficiently. The frost must be removed. A heat pump has a cycle called a defrost cycle, which removes the frost from the outdoor coil.

A heat pump unit will defrost regularly when frost conditions occur. The defrost cycle should be long enough to melt the ice, and short enough to be energy-efficient.

In the defrost cycle, the heat pump is automatically operated in reverse, for a moment, in the cooling cycle. At this time the electric heat strips are activated so the indoor air temperature can be maintained. Sometimes the air temperature can be a little cooler while going through defrost mode, being completely normal. This action temporarily warms up the outdoor coil and melts the frost from the coil. In this defrost cycle, the outdoor fan is prevented from turning on when the heat pump switches over, and the temperature rise of the outdoor coil is accelerated and increased.
The heat pump will operate in the defrost cycle until the outdoor coil temperature reaches around 57° F. The time it takes to melt and remove accumulated frost from an outdoor coil will vary, depending on the amount of frost and the internal timing device of the system.

Why is Steam coming from my AC?

We get calls mostly from new heat pump owners at the beginning of each heating season. Sometimes they mistake the steam they are seeing for smoke. Some even thinking their outdoor fan motor burned-up, because when this is happening the fan actually stops running even though the compressor continues running, sometimes making a louder than normal sound.

This is actually your heat pump in “Defrost Mode”. It happens regularly during the heating season. The outdoor coils tend to ice-up during the winter – especially in moist conditions as we have here in Florida with the humidity, causing the unit to loose efficiency. By regularly defrosting itself; keeping the outdoor coil clear for proper airflow, the heat pump runs more efficiently.

When the unit does go into the defrost mode, a couple of things happen. First, the outdoor fan motor stops running. This helps build-up more pressure and heat to melt the ice. Also the reversing valve shifts from the heating mode to the air conditioning mode. That’s right, you are actually running the air conditioner. By making the outdoor unit the condenser, the warm refrigerant gas passing through the coils accomplishes the defrosting. Lastly, the supplemental heat at the indoor unit is energized to offset the now, cold air blowing in the house.

It usually only happens for a few minutes at a time, and only as needed.

Now, your heat pump should only go into the defrost mode periodically, except for severe weather conditions (snow, rain, sleet). If your unit is constantly going into defrost, this may indicate a problem.

Below is a list of possible causes. Items in red usually require a service call. Items in green however can be addressed, some even fixed by the homeowner.

  • Bad defrost control
  • Bad defrost sensor or thermostat
  • Bad outdoor fan motor
  • Low charge or restriction
  • Outdoor coil blocked – possibly with leaves or ice

Don’t hesitate to give us a call if you feel you need service.

Brown’s Arctic Air, 352-728-4990.

Thank You, Michael L!!

“Responded quickly and fixed our A/C, replacing the blower motor the same day. It was a real lifesaver. Thanks guys!”

Thank you, Merlinda Swearingen!!

Called when our ac decided to quit blowing cold air, and immediately got a human. Same day service too!!! Philip called and let us know he was on his way, fixed the issue, professional and friendly. We would recommend Brown’s Artic Air for any AC issues.

Thank you, Penny Bennett!

Positive: Professionalism, Punctuality, Quality, Responsiveness, Value

Philip did an exceptional job getting our air up and running. Our unit is over 30 years old and he will be replacing it next week with a new unit. Philip is professional and knowledgeable. Highly recommend Brown’s Artic Air.

Service: Repair HVAC

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