Heat Pump Repair in McAlester, OK
Homes here need heat from November through April and cooling from May through September. If your system quits, tell us what it's doing and a licensed contractor who covers Pittsburg County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of work a year in McAlester
Your heat pump runs almost year round here, heating from November through April and cooling from May through September. Winter mornings averaging 32°F mean it switches into defrost often, melting frost off the outdoor coil before it can get back to heating. Summer afternoons near 91°F push it hard from the other direction, cooling for five straight months with barely a break between seasons.
That back and forth wears on the reversing valve, the part that switches the system between heat and cooling. If it sticks, you will feel it. The system blows cold air when it should be heating, or it will not switch over at all. Over half of homes in McAlester heat with electricity, so when a heat pump goes down on a cold night, there is no furnace to fall back on.
- 6 months
- November through April, your system heats
- 5 months
- May through September, it cools
- 32°F
- the average winter night it heats against
- 91°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Oklahoma requires HVAC contractors to hold a state license.
The Construction Industries Board issues the license and keeps the record on file, but it licenses the contractor rather than the specific repair. That means the credential travels with the business, not with this particular heat pump job.
A heat pump repair almost always means opening the refrigerant side of the system, whether the technician is checking charge, fixing a leak, or replacing a component in the sealed system. That work requires EPA Section 608 certification, which is a federal requirement that applies no matter which state the technician works in. In Pittsburg County, the state license and the federal certification cover two different parts of the same job.
Source: Oklahoma State Legislature
- Why is my heat pump blowing cold air?
- In heating mode, air from the vents feels cool even when the system works fine, because it comes out around body temperature, not furnace hot. If it feels truly cold and never warms up, the system may have switched into defrost mode and stayed there, or the reversing valve that switches it between heating and cooling could be stuck. Low refrigerant will also leave you with cold air and a system that runs constantly without warming the house. A contractor can check the refrigerant charge and the reversing valve, since that side of the system is sealed and legally requires EPA certification to open.
- Why is there ice on my heat pump?
- A thin coat of frost on the outdoor unit during winter is normal, and the system melts it off on its own a few times a day through a defrost cycle. Thick ice that builds up and does not clear points to a problem, often a defrost control board that is not triggering the cycle, a stuck defrost sensor, or a fan motor that has slowed down or failed. With winter nights here averaging 32°F, the outdoor coil spends a lot of hours in the range where frost forms easily, so a defrost cycle that is not working shows up fast. If the coil is packed in ice rather than lightly frosted, it needs a contractor to look at the defrost controls before the coil is damaged.
- Why is my heat pump running but not cooling?
- If the outdoor unit and indoor fan are both running but the air coming out is not cold, the most common cause is low refrigerant from a leak somewhere in the lines or coil. A dirty outdoor coil can cause the same thing, since it cannot release heat properly when it is coated in dirt or grass clippings. A failing compressor will also let the system run without actually cooling. On a 91°F afternoon a system that is not cooling right will struggle to keep up at all, so it is worth having a contractor check the charge and the compressor before the next stretch of hot weather.