Montgomery’s January weather is usually mild, with an average daily high near 58.8°F and an average daily low near 36.5°F. Even so, a heat pump doesn’t get the winter off. Montgomery’s January record low is 0°F, and a sharp cold snap places much greater demand on the system.
Preparing for winter here is less about cold-climate winterizing and more about maintaining airflow, using the thermostat correctly, and recognizing normal cold-weather operation. Since 1991, we’ve helped homeowners ready HVAC equipment for the humidity and temperature swings that can arrive before or during heating season.
Plan for Mild Days & Sudden Cold Snaps
A heat pump is well suited to Alabama’s generally moderate winter conditions because it moves heat rather than creating it through combustion. As outdoor temperatures drop, however, the system must work harder to collect heat from outside and transfer it indoors.
Complete basic checks before the first freezing forecast. This gives you time to replace a restricted air filter, correct thermostat issues, and arrange maintenance before the system faces its heaviest seasonal demand.
Pay attention to performance when a cold front arrives. Longer run times are common in colder weather, but weak airflow, cool air at the vents, new noises, or repeated changes between heating modes deserve attention.
Complete Safe Pre-Winter Checks
Most preparation involves supporting airflow and keeping the equipment accessible. These checks don’t require opening panels or working around electrical components.
Work through this list before heating season:
- Check the air filter monthly and replace or clean it as needed, following the manufacturer’s instructions.
- Clear leaves, grass clippings, branches, and stored items away from the outdoor heat pump unit.
- Make sure supply registers and return grilles are open and not blocked by furniture, rugs, or curtains.
- Inspect the outdoor unit for visible damage, loose debris, or anything that could interfere with airflow.
- Leave the outdoor unit uncovered while it operates. A tarp or sealed cover traps moisture and restricts necessary airflow.
A clean air filter is one of the simplest ways to support everyday operation. A clogged filter restricts airflow, makes the system work harder, and can leave rooms less comfortable during a cold spell.
Check the condensate drain area for standing water or other obvious drainage concerns. Heat pumps remove moisture during cooling operation, so drainage components still need periodic attention. If water repeatedly collects around indoor equipment or you notice a drain problem, leave the repair to a trained technician.
Follow a Heat-Pump-Friendly Thermostat Routine
For winter thermostat settings, the U.S. Department of Energy recommends 68°F while you’re home and awake. Choose a comfortable setting you can maintain without frequent, large adjustments.
Heat pumps respond differently from many conventional heating systems when the thermostat is raised sharply after a setback. The system may activate backup electric resistance heat, a built-in source that adds heat when demand is high. It serves a purpose during difficult conditions, but triggering it unnecessarily can increase energy use.
Don’t assume a large overnight setback is the right strategy. Use setback schedules only with a smart or programmable thermostat designed for heat pumps. Otherwise, maintain a steady temperature or make small adjustments instead of raising the thermostat several degrees at once.
Before heating season, confirm that the thermostat is in heat mode, its clock and schedule are correct, and the display responds normally. A thermostat that doesn’t hold settings or appears inaccurate should be evaluated during maintenance.
Recognize Normal Frost & Defrost Cycles
A light coating of frost on the outdoor heat pump unit during cold, damp weather is often normal. The system periodically enters a defrost cycle, a temporary operating mode that removes frost from the outdoor coil so heat transfer can continue.
During a defrost cycle, you may see water draining from the unit, brief steam rising around it, or the outdoor fan pausing temporarily. These signs alone don’t mean the unit has failed.
Heavy or persistent ice that remains after a defrost cycle isn’t routine. Arrange professional service if you notice any of the following:
- The unit is encased in ice or repeatedly develops heavy ice.
- The system stops delivering adequate heat after a defrost cycle.
- You hear grinding, loud buzzing, or other unusual noises.
- The system repeatedly switches modes or runs without improving indoor comfort.
Don’t chip away ice with tools, pour hot water on the unit, or attempt refrigerant or electrical work. Persistent frost and ice can indicate an airflow problem, electrical malfunction, refrigerant issue, or a component that needs repair.
Schedule Maintenance Before Winter Demand Rises
Annual heat pump maintenance is most useful before winter demand reveals a problem. During a maintenance visit, we inspect filters, thermostats, electrical components, belts, motors, and blower motor bearings. We also calibrate the thermostat and check for conditions that could affect operation through local humidity and temperature swings.
Professional maintenance is particularly useful if the system struggled last winter, hasn’t been serviced in the past year, or has recently produced uneven heating or unusually high energy use. We service all major HVAC brands and models, allowing us to tailor maintenance to the equipment already in your home.
Our Home Comfort Club includes appointment reminders, discounts, and annual and biannual system tune-ups. It offers a structured way to keep seasonal maintenance on schedule before cold weather approaches.
Run a Cold-Snap Readiness Check
When a cold snap is forecast, inspect the filter and outdoor unit before temperatures fall. Once colder weather arrives, watch whether the system completes its defrost cycle and restores indoor heat. Persistent ice, unusual noise, or weak airflow is a reason to stop troubleshooting and request professional service.
For annual heat pump maintenance in Montgomery or surrounding areas, our NATE-certified technicians at AirNow Home Services can assess your system and provide a clear, no-cost estimate before work begins. To arrange service, call (334) 384-6050.