64% of Lawton’s 39,789 housing units predate 1980, which in practice means first-generation central air past end of life, and R-22 systems that cost more to recharge than replace. Lawton leans electric for heat, 52% against 45% gas. Only 48% of Lawton is owner-occupied. In a renter-majority market the person with the problem is often not the person who authorises the repair.

What we get called for in Lawton

Heat pump runs constantly below freezing

Heat pumps lose capacity as outdoor temperature drops and lean on electric strip heat below roughly 35 degrees. In an Oklahoma ice event that is why the bill spikes. It is expected behavior, not a fault – but if strips are running in mild weather, the changeover setting is wrong.

Condenser pad has sunk and the unit leans

Slab-mounted units settle over decades. A significant tilt puts the compressor out of level and strains the line set. Re-levelling is inexpensive; a compressor is not.

Rust or soot streaks at the furnace heat exchanger

A cracked heat exchanger can put carbon monoxide into the supply air. Do not run the furnace. If anyone in the house has headaches or nausea that improve when they leave, treat it as an emergency – get everyone outside and call 911 or your gas utility from outside the building. Have the exchanger inspected before the system runs again.

Blower runs constantly and never satisfies

Could be a stuck relay, a failing capacitor or a refrigerant charge problem. Not something to diagnose by guessing – the parts are cheap and the labor to find which one is the actual cost.

What this costs here

Filter change	$0 – do it yourself
Coil rinse	$0 – do it yourself
Capacitor replacement	$150-260
Condensate line clear	$120-200
Duct sealing, whole house	$1,400-2,600
AC replacement, 3 ton	$5,200-7,800

Ranges reflect Lawton-area labor against a $142,100 median. Two of these you can do yourself for nothing.

Check these first

• Find the condensate cleanout near the air handler and clear it with a wet vac before it backs up into the ceiling.
• Check that no supply register is blowing directly across the thermostat, and that the thermostat is not in afternoon sun.
• Read the manufacture date off the outdoor unit’s data plate. It is usually in the serial number and it settles most repair-or-replace arguments.

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Written by Jaylan Jones. Sooner Home Services earns a referral fee when a call connects to a contractor. See our business-model disclosure.