How do I prepare my HVAC system for an Oklahoma ice storm?
Before an ice storm, get your furnace or heat pump tuned, replace the filter, seal drafts, and clear leaves and ice from around the outdoor unit. During the storm, keep the thermostat steady, gently brush ice off a heat pump, and never chip at it with a sharp tool. After the storm, check that the outdoor unit is clear and listen for odd sounds. If your heat quits in a hard freeze, call (405) 375-4822 right away.
Straightforward pricing
- $99 dispatch on every truck roll. Free on new-install estimates.
- $111 diagnostic, credited toward the repair if you accept within 14 days.
- Free estimates on new installs. No charge to walk through replacement options.
Call (405) 375-4822. 4.8 stars / 289 reviews.
I have been doing HVAC in central Oklahoma for 45 years, and ice storms are the calls that scare me for my customers. When the ice rolls through Kingfisher and the power flickers, a furnace that has been ignored all fall is exactly when it decides to quit. I would rather walk you through a little prep now than show up at 2 a.m. with the house already cold and the kids in coats. Here is what I tell every homeowner before, during, and after an Oklahoma ice storm.
What should I do to my HVAC before an ice storm hits?
The work that protects you happens before the first flake falls. Once the storm is here, your options narrow fast. Here is my before-the-storm checklist:
- Get a tune-up. A failing igniter, a weak capacitor, or a cracked heat exchanger almost always shows warning signs first. A fall checkup catches them before the cold does.
- Replace the filter. A clogged filter chokes airflow and makes the system work harder right when it can least afford to. A clean filter costs a few dollars and saves a service call.
- Seal drafts. Caulk windows, add weatherstripping, and close the foundation vents. The less heat that leaks out, the less your system runs in the freeze.
- Clear the outdoor unit. Rake leaves, trim branches, and keep at least two feet of space around a heat pump so ice and debris cannot block airflow.
- Have a backup plan. A few space heaters, extra blankets, and a charged phone matter when the power and the heat both go down.
Why does my heat pump ice over and what do I do?
A heat pump pulling warmth from cold outdoor air will frost up. That is normal. The unit runs a defrost cycle on its own every so often, and you may see steam rolling off it. That is the system working correctly, not breaking.
What is not normal is a solid block of ice covering the whole coil and fan for hours. That can mean a stuck defrost control, a low refrigerant charge, or blocked airflow. If that happens, switch the system to emergency heat to protect it, and call me. Do not chip at the ice with a screwdriver or a hammer. The coil fins and refrigerant lines bend and puncture easily, and a cheap ice problem turns into an expensive repair. A garden hose with lukewarm water can melt light ice safely if the temperature allows it, but never use hot water on a cold coil.
What do I do during the ice storm to keep heat running?
When the storm is on top of you, steady beats aggressive. Here is how to ride it out:
- Hold the thermostat steady. Pick one comfortable setting and leave it. Cranking it up and down strains the system and a heat pump in particular hates big swings in a freeze.
- Watch for a power blip. After an outage, give the system a few minutes before expecting full heat. Many units have a built in delay to protect the compressor.
- Keep the outdoor unit clear. Gently brush off heavy snow or ice buildup with a broom. Be gentle around the fins.
- Run ceiling fans on low, clockwise. This pushes warm air down off the ceiling and helps the whole house feel warmer at the same setting.
- Open cabinet doors under sinks. Not HVAC exactly, but letting warm air reach the pipes prevents a frozen-pipe disaster on top of a heating one.
What are the common ice storm HVAC problems and causes?
Most of the freeze calls I run trace back to a short list. Here is what I see and what usually causes it:
| Symptom | Likely cause | What to do |
|---|---|---|
| No heat at all | Tripped breaker, failed igniter, or frozen condensate line. | Check the breaker, then call for service if it does not restart. |
| Heat pump iced solid | Stuck defrost control, low charge, or blocked airflow. | Switch to emergency heat and call. Do not chip the ice. |
| Weak or cool air | Clogged filter, dirty coil, or undersized return airflow. | Replace the filter first. If no change, schedule a checkup. |
| System short cycles | Bad capacitor, dirty flame sensor, or thermostat fault. | Note the pattern and call. This wears out parts fast. |
| Loud bang on startup | Delayed gas ignition or expanding ductwork. | Shut it down and call. Delayed ignition is a safety issue. |
What should I check after the ice storm passes?
Once the ice melts off, a quick walk-around saves you a surprise on the next cold night. Clear any ice, snow, or fallen branches off the outdoor unit and make sure nothing is leaning against it. Look for bent fan blades or coil fins from falling ice. Listen on startup for grinding, rattling, or repeated clicking, which all point to a part that took a beating. Replace the filter again if the system ran hard for days. If the unit lost power for a long stretch, give it a full cycle and confirm it is heating evenly in every room. If anything sounds or smells off, do not wait for it to get worse. I would rather catch a small problem in the driveway than a dead system in the next storm.
When should I just call Hartzell’s instead of troubleshooting?
If you smell gas, leave the house and call the gas company first, then call me. If the heat is fully out in a hard freeze, if you see ice that will not clear, or if the system is making a noise it never made before, that is a service call, not a DIY job. My dispatch is $99 for a truck roll, the diagnostic is $111 and gets credited toward the repair if you accept it within 14 days, and estimates on new systems are free. I am IGSHPA Accredited, NATE certified, and a Master HVAC license holder, with 4.8 stars and 289 reviews from folks right here in central Oklahoma.
Oklahoma ice storm HVAC questions, answered
How do I prepare my HVAC for an Oklahoma ice storm?
Get a furnace or heat pump tune-up, replace the air filter, seal drafts around windows and doors, and clear leaves and debris from around the outdoor unit. Have space heaters, blankets, and a charged phone ready in case the power goes out during the storm.
Is it normal for my heat pump to ice over in winter?
Yes. A heat pump frosts up in cold weather and runs an automatic defrost cycle to clear it, which can look like steam coming off the unit. A solid block of ice covering the coil and fan for hours is not normal and means you should switch to emergency heat and call for service.
Can I chip ice off my outdoor unit during a storm?
No. Do not chip ice off the unit with a screwdriver, hammer, or any sharp tool. The coil fins and refrigerant lines bend and puncture easily. Gently brush off snow with a broom, or use lukewarm water to melt light ice, but never use hot water on a cold coil.
What should I check on my HVAC after an ice storm?
Clear ice, snow, and fallen branches off the outdoor unit, look for bent fan blades or coil fins, and listen for grinding or rattling on startup. Replace the filter if the system ran hard for days, and confirm the house is heating evenly in every room.
How much does an emergency HVAC service call cost in Kingfisher?
Dispatch is $99 for every truck roll and the diagnostic is $111, which is credited toward the repair if you accept it within 14 days. Estimates on new systems are free. Call (405) 375-4822 for service in Kingfisher and central Oklahoma.
Heat out in the cold? I can help.
If your furnace or heat pump quits in an Oklahoma freeze, do not tough it out. I run service calls across Kingfisher and central Oklahoma, and a fall tune-up now beats an emergency call later.
Master HVAC license. NATE certified. 45 years of HVAC experience. 4.8 stars / 289 reviews.