Emergency AC Repair: $160 to $250 an Hour After Hours

Emergency AC repair cost at a glance. National figures; each guide shown as published, not averaged. Parts are extra.

Is a broken AC an emergency? When to call tonight

• Call 911 now: someone has a body temperature of 103 F or higher, hot red skin that is dry or damp, a fast strong pulse, confusion, or has passed out. The CDC lists these as heat stroke signs and calls it a medical emergency. Move the person somewhere cooler and use cool cloths or a cool bath while you wait; the CDC says not to give them anything to drink.
• Call for repair tonight: the indoor temperature is climbing toward 90 F and someone in the house is 65 or older, an infant or young child, pregnant, or has heart disease or asthma. Those are the groups the CDC puts at higher risk from heat.
• Can likely wait for morning: everyone is healthy, the house is holding below 90 F, and the night is cooling off. Regular-hours labor is $75 to $150 an hour in HomeAdvisor's figures, against $160 to $250 after hours.
• Smell burning or see sparks at the unit? Turn the system off at the thermostat and keep away from the outdoor unit. Carrier warns that an AC capacitor can store enough electricity to cause serious injury or death even after the power is disconnected.

How hot is too hot? Heat danger levels from the National Weather Service

The National Weather Service's heat index is a measure of how hot it really feels once humidity is factored in with the air temperature. The NWS says the values were worked out for shady, light-wind conditions, and that full sunshine can add up to 15 F. A closed house is shady but rarely breezy, and humid air makes the same temperature feel hotter. Read your thermostat, which shows the indoor temperature on most models, and compare it with the scale below.

National Weather Service heat index classification (Amarillo office page, 2025). Effects apply with prolonged exposure or physical activity.

Two cues from the CDC decide how fast you need help. First, who is home: people 65 and older, infants and young children, pregnant women, and people with heart disease or asthma are at higher risk. Second, the 90 F line: the CDC says to use fans only while indoor temperatures are below 90 F, because above that a fan can raise body temperature. Once the house passes 90 F with a higher-risk person inside, treat it as an emergency call or move that person somewhere cooler.

Heat exhaustion usually comes before heat stroke. The CDC's fact sheet lists heavy sweating, cold, pale and clammy skin, a fast weak pulse, nausea or vomiting, muscle cramps, tiredness, dizziness, headache and fainting. Move to a cool place, loosen clothing, use cool wet cloths or a cool bath and sip water. The CDC says to get medical help right away if the person is throwing up, the symptoms get worse, or they last longer than 1 hour.

How much is emergency AC repair? After-hours rates and common parts

An emergency bill has three parts: the service call, the labor at the after-hours rate, and the part. HomeAdvisor's June 2026 AC repair guide puts the service call at $75 to $200, and says most companies apply it to the repair. HomeGuide's HVAC guide says emergency rates are typically double or triple the regular rate, and that some contractors instead add $40 to $80 an hour for after-hours and weekend visits. Ask which model the company uses before anyone is sent.

Installed prices for parts that often fail on hot days. Regular-hours pricing; after-hours labor is added on top.

Capacitors and contactors sit at the cheap end of that table. Refrigerant and compressor work sit at the other end. If a technician finds a refrigerant leak at night, ask whether the system can be made safe tonight and the leak found and fixed at regular rates, since HomeGuide's leak repair range alone runs $200 to $1,500. Full part-by-part prices are on AC repair cost by common fix, and capacitor symptoms on the AC capacitor guide.

24 hour AC repair and same day AC repair: what is realistic

Search results promise 24 hour AC repair, but no one can promise a technician at 2 a.m. in a heat wave, when every company in town has a list. Some companies answer at night and on weekends, others take a message, and availability varies by area and by week. What you can control is the price. Get the after-hours rate and the service call fee on the phone, and ask what time window they can give.

Same day AC repair at regular rates is often possible if you call early on a weekday. If the house is safe overnight, a 7 a.m. call can cost less than a 10 p.m. one, at $75 to $150 an hour in regular hours against $160 to $250 after hours in HomeAdvisor's figures. HomeGuide says HVAC maintenance plans, at $150 to $300 a year, often include priority scheduling, which matters most during a heat wave. What a spring visit checks is on AC tune-up.

What to check before you call for emergency AC repair

Five minutes of checks can save a night-rate visit. These come from Bryant's homeowner troubleshooting page and Lennox's frozen-AC guidance:

1. Thermostat. Bryant says to make sure it is set to Cool. Set it below the room temperature.
2. Breakers. Bryant says to make sure all the breakers for the system are on. If the AC breaker trips again right after you reset it, say so on the call.
3. Outdoor disconnect. Bryant describes it as a gray box about 8 by 16 by 4 inches near the outdoor unit. It must be on.
4. Filter. Bryant says an extremely blocked filter can shut down the outdoor unit for lack of airflow. Swap it if it is gray and matted, and keep furniture at least 4 inches from return grilles.
5. Ice on the lines or coil. Lennox says ice points to restricted airflow or low refrigerant. Turn cooling off, run the fan only, and let it thaw; Bryant says thawing can take several hours and not to chip the ice.
6. Water at the indoor unit. Bryant says to turn the system off at the thermostat when it is leaking, and that clearing a clogged drain line often costs under $150. See AC leaking water.

If the outdoor unit hums but the fan does not spin, stop there. Carrier lists humming as a capacitor sign and strongly recommends that homeowners not attempt capacitor replacement themselves. More symptom-by-symptom checks are on AC not cooling and AC not turning on.

How to stay cool until the AC repair arrives

The goal is to slow the house from heating and keep bodies cool. From Ready.gov, the National Weather Service and the CDC:

• Close drapes or shades on sunny windows. Ready.gov also suggests weather-stripping and window reflectors made to bounce heat back out.
• Use fans to push hot air out of a room or pull cooler night air in, as the NWS suggests, and do not point a fan at yourself once the room is above 90 F.
• Take cool showers or baths, and wear loose, lightweight, light-colored clothing (Ready.gov).
• Skip the oven. Ready.gov says using it less helps keep the house cooler.
• Keep a water bottle going and limit sugary, salty, caffeinated or alcoholic drinks, as the CDC advises.
• Dial 2-1-1 to find a place nearby with air conditioning (CDC).
• Check on older, sick or frail neighbors, and on pets (NWS, CDC). Never leave people or pets in a closed car on a warm day (Ready.gov).

If the power is out on the whole street, the AC is probably fine; report the outage to your electric utility. Our emergency HVAC repair page covers carbon monoxide and gas safety for heating calls.

Repair it tonight, replace it later

A night call is the wrong time to buy a new system. HomeAdvisor suggests replacing when the repair cost times the unit's age passes $5,000, the repair is more than half the price of a new unit, the system is over 10 years old, or it uses R-22. If the technician says the compressor is gone on an old unit, ask for the least expensive way to get cooling back, or a temporary fix, and price the replacement in daylight. HomeAdvisor puts central AC replacement at $2,500 to $7,500; AC replacement cost has the full breakdown.

Calls go to an independent company that serves your area and takes this kind of job; hours vary. How calls work. Ask for the company's license number where your state licenses HVAC work, and for proof of insurance.

Do this now: AC out in the heat

1. Anyone with heat stroke signs (103 F or higher, confusion, hot skin, passing out): call 911 first.
2. Read the indoor temperature on the thermostat and note who is home.
3. Check the thermostat setting, the breakers, the outdoor disconnect and the filter.
4. If there is ice or water at the unit, switch cooling off and run the fan only.
5. Close shades, take cool showers and keep fans off yourself above 90 F indoors.
6. Call for repair and get the after-hours rate and service call fee before booking.
7. Write down any error code, noise or smell for the technician.

Emergency AC repair by city

Local pages add each city's prices, heat safety notes, and utility or bill-help contacts:

• Emergency AC repair in Atlanta: after-hours rates, heat risks and LIHEAP bill help.
• Emergency AC repair in Austin: local repair prices, permits and Austin Energy rebates.
• Emergency AC repair in Dallas: after-hours rates, part prices and the city's rules for renters' AC.
• Emergency AC repair in Houston: Houston repair prices, heat safety and help with cooling bills.
• Emergency AC repair in Las Vegas: after-hours rates and staying safe in desert heat.
• Emergency AC repair in Miami: local repair prices, days over 90 F and county bill help.
• Emergency AC repair in Orlando: local repair prices, heat safety, outages and help paying.
• Emergency AC repair in Phoenix: local prices, rush fees and the rental cooling rule.
• Emergency AC repair in San Antonio: local repair prices, CPS outages and cooling bill help.