The first frosty morning in Greenwood always brings a few worried phone calls. Somebody looks out the kitchen window and sees a cloud of steam pouring off the heat pump. Somebody else holds a hand over a register and decides the air “isn’t hot.” A lot of the newer subdivisions around Greenwood were built all-electric with heat pumps, and plenty of folks moving in had gas furnaces at their last house. Most of what scares people about a heat pump in winter is the system doing exactly what it was built to do, but a few things really do need a call.
Here are the beliefs we hear most, and what’s actually true.
Myth: Steam Coming Off the Outdoor Unit Means It’s Burning Up
Reality: that’s almost always defrost. When it’s cold and damp outside, which describes a lot of Arkansas winter mornings, frost builds up on the outdoor coil. Every so often the heat pump reverses for a few minutes to warm that coil and melt the frost off. The outdoor fan stops, you may hear a whoosh when the valve shifts, and the melting frost comes off as a cloud of vapor. Then it switches back to heating and the fan starts again.
A defrost cycle usually lasts a few minutes and happens more often in wet, near-freezing weather than on a dry, colder day. Steam is fine. Smoke, a burning smell, or loud grinding are not. Those mean shut it off and call.
🛠 What we do: when a heat pump looks like it’s struggling, we watch it run through a full defrost cycle, check the defrost sensor and control board, and measure the refrigerant charge. A heat pump that’s low on refrigerant frosts up faster and defrosts poorly, and that’s something no amount of waiting fixes.
Myth: A Little Ice on the Heat Pump Means It’s Broken
Reality: a light coat of frost on the coil between defrost cycles is normal. What isn’t normal is a heat pump encased in solid ice, the coil hidden behind a block of it, or ice building up on the top of the unit and staying there for hours.
The usual causes are a defrost problem, a low refrigerant charge, an outdoor fan that isn’t turning, or water dripping onto the unit from a gutter above it. That last one is common around Greenwood, where a lot of heat pumps sit right under a roofline. A leaky or overflowing gutter dumps water on the unit, it freezes, and the next defrost can’t keep up.
Don’t chip at the ice with anything sharp. The fins and refrigerant tubes are thin and easy to puncture. If the unit stays iced over, switch the thermostat to emergency heat to stay warm, and give us a call.
Myth: The Air Should Feel Hot Like a Furnace
Reality: a heat pump moves heat instead of burning fuel, and the air it puts out is warm, not hot. A gas furnace sends out air that feels hot on your hand. A heat pump runs cooler air for longer cycles. Air that’s warmer than your hand, but not hot, is normal, and that’s why the air can feel “cool” if you’re standing right under a register.
The fair test is the house, not the register. If the heat pump runs and the house holds the temperature you set, it’s working. If it runs all day and the house keeps sliding, the strips come on constantly, or the air at the register feels the same as the room, that’s worth a service call.
Myth: Emergency Heat Is the Setting for Really Cold Nights
Reality: emergency heat is for when the heat pump itself has a problem, like the outdoor unit iced over or not running. It shuts the heat pump off and heats the house with the electric strips in the air handler alone. Those strips are some of the most expensive heat you can buy.
On a cold night the system already brings the backup strips on automatically when the heat pump needs help. That’s the “aux” light on many thermostats, and it’s normal on a frigid morning. Leaving the thermostat on EM HEAT for days is how people end up with a January electric bill that makes them call us.
Myth: Turning It Way Down at Night Saves the Most
Reality: with a gas furnace a deep nighttime setback usually saves money. With a heat pump, a big setback can backfire. When you crank the thermostat back up six or eight degrees in the morning, many systems call for the strips to make up the difference fast. Small setbacks of two or three degrees, or a thermostat made for heat pumps that recovers slowly, work better. If you’re not sure your thermostat is set up for a heat pump, that’s an easy thing for us to check on a visit.
Myth: You Should Cover the Heat Pump for Winter
Reality: never cover a heat pump that’s heating your house. It needs open airflow all winter. Keep leaves, firewood, and shrubs a couple of feet back, keep snow and ice from piling against the sides, and keep the area clear underneath so defrost water can drain away.
Do I need a heat pump tune-up before winter?
It’s a good idea. A fall visit catches a weak capacitor, a low charge, or a defrost problem on a mild day instead of an ice-storm night.
Do I need to replace my heat pump if it struggles below freezing?
Not always. Many struggling heat pumps have a fixable problem. If yours is older, today’s inverter-driven heat pumps, which ship with R-454B refrigerant and are what we install, hold their heating much further into the cold.
Do I need to worry about the heat pump in an ice storm?
Keep it clear and keep gutters above it flowing. If ice coats the unit and won’t let go, switch to emergency heat and call.
Steady Heat in Your Greenwood Home
Clark HVAC is a family-owned, licensed and insured heating and cooling company, and we service and install heat pumps in Greenwood and across Sebastian County. If something about your heat pump doesn’t look right this winter, we’ll tell you straight whether it’s normal or needs fixing, and give you the price before any work starts.
📞 Call Now: 918-839-3734
Straight answers. Fair pricing. Clean work.