Should I open windows when the AC is out in Texas?

Only when it is cooler outside than inside — usually late night through early morning. During the day, an open window in 100-degree air heats the house faster. Ventilate hard overnight with a cross-breeze or window fans, then close everything and pull the blinds before the morning sun.

How fast can I get an AC repaired in a Texas summer?

Peak season is the busiest time for every HVAC company, and same-day service isn't always available. Calling promptly, being flexible on scheduling, and having your system details ready helps. When you call, describe the symptoms and anything you already checked — it speeds the diagnosis.

Keep Your House Cool Without AC | Texas Heat Survival Guide

Q: How do I keep my house cool while the AC is being repaired?

Fight solar gain first: close blinds and curtains on sun-facing windows from morning on, keep exterior doors shut, and skip the oven, dryer, and dishwasher until evening. Concentrate on keeping one room livable rather than the whole house, use fans while it's moderately hot, and ventilate hard overnight if outdoor air cools below indoor air.

Q: Do fans help in extreme heat?

Fans cool people, not rooms — they help sweat evaporate, which works well in moderate heat. Public-health guidance cautions that in extreme indoor heat, fan airflow alone becomes much less effective and can even add heat load; at that point, cool showers, cold drinks, and time in air-conditioned spaces matter more than moving hot air around.

Q: When is a hot house actually dangerous?

Heat risk indoors is real for infants, older adults, pregnant people, pets, and anyone with heart or respiratory conditions or on certain medications. Warning signs like dizziness, confusion, nausea, or skin that is hot and dry are a medical concern, not a comfort problem. When a house stays very hot, moving vulnerable household members to an air-conditioned location is the safe call.

Bottom line: while you wait on AC repair in a Texas summer, fight the sun before you fight the temperature — blinds closed on sun-facing windows from morning on, no oven or dryer until dark, one room kept livable rather than the whole house cool. Use fans in moderate heat, ventilate hard overnight, and take indoor heat seriously as a safety issue: infants, older adults, and pets need an air-conditioned place to be if the house stays dangerously hot.

An AC failure in a Texas July is a genuine household emergency, and repair calendars fill fast in peak season. This guide covers two things at once: how to slow your house’s heat-up while you wait, and how to recognize the point where a hot house stops being uncomfortable and starts being unsafe. (If the system is running but blowing warm, run our not-cooling checklist first — a meaningful share of “broken AC” days end with a filter or a breaker.)

Step 1: Stop the Heat at the Windows

The single biggest lever in a Texas summer is solar gain.

Close blinds and curtains on every sun-facing window — east side in the morning, west side in the afternoon — before the sun reaches them, not after the room is hot.
Blackout or thermal curtains are meaningfully better than open blinds; even a blanket over a west window on a brutal afternoon helps.
Keep exterior doors closed and minimize in-and-out traffic during peak hours.

Step 2: Stop Making Heat Indoors

Every appliance is a space heater now:

Skip the oven and stovetop — grill outside, eat cold, or use the microwave.
Delay the dryer and dishwasher to late evening.
Turn off unneeded lights and electronics; they all add load.
Run bathroom exhaust fans during and after showers to dump humidity.

Step 3: Shrink the Problem to One Room

Cooling the whole house is off the table; keeping one room livable is not.

Pick a ground-floor room with few windows (heat rises, and upstairs rooms bake).
Close its blinds fully, close doors to the rest of the house, and put the fans there.
A portable or window AC unit in that one room, if you have or can borrow one, turns a rough wait into a manageable one — sized to a single room, they do what they can’t do for a whole house.
Sleep there if the nights stay hot.

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Step 4: Use Fans and Night Air Correctly

Fans cool people, not rooms. Point them at occupants; running fans in empty rooms only adds motor heat.
The extreme-heat caveat: public-health guidance cautions that once indoor air gets extremely hot, fan airflow alone stops helping much — think of it as a hair dryer effect. In that range, lean on cool showers, damp cloths, cold drinks, and air-conditioned spaces instead.
Ventilate at night, seal by day. When outdoor air drops below indoor air — typically late night to early morning — open windows on opposite sides of the house and move air through with window fans. Close everything and drop the blinds before sunrise.
Set ceiling fans to spin counterclockwise (pushing air down) for summer.

Step 5: Take the Safety Side Seriously

This is the part of the guide that matters most. Indoor heat is a genuine health risk for infants and young children, older adults, pregnant people, pets, and anyone with heart or respiratory conditions or on certain medications.

Hydrate ahead of thirst, and check on vulnerable household members and neighbors.
Know the warning signs: dizziness, confusion, headache, nausea, muscle cramps, or skin that is hot and dry. Treat these as a medical concern, not a comfort complaint.
Relocate when in doubt. If the house stays dangerously hot into the evening, malls, libraries, and the homes of friends and family are air conditioning you don’t have to fix first. During declared heat emergencies, many Texas communities open cooling centers.
Never leave children or pets in vehicles, and give pets shade, water, and the coolest floor in the house.

Step 6: Make the Repair Call Count

Call early — peak-season slots go fast, and mornings book the day.
Have details ready: system age and brand, the symptoms, and what you already checked. Our not-cooling checklist doubles as the pre-call script; a diagnostic visit in Texas typically runs $75 to $150, per the AC repair cost guide.
If the quote comes back big on an older system, read the repair-or-replace math before approving a major fix under duress — and note that the signs of a dying AC usually showed up before the day it quit. When it’s over, the seasonal maintenance routine is what makes the next failure a spring appointment instead of a July emergency.

Frequently Asked Questions

How do I keep my house cool while the AC is being repaired?

Block sun-facing windows, stop indoor heat sources, keep one room livable instead of the whole house, use fans on people in moderate heat, and ventilate overnight.

Do fans help in extreme heat?

They help in moderate heat by evaporating sweat. In extremely hot indoor air, guidance cautions that fans alone lose effectiveness — switch to cool water, cold drinks, and air-conditioned spaces.

When is a hot house actually dangerous?

When vulnerable people or pets are in it, and whenever warning signs like confusion, dizziness, or hot dry skin appear. Relocating to air conditioning is the safe call.

Should I open windows when the AC is out?

Only when outside is cooler than inside — usually overnight. Seal and shade the house during the day.

Get the Cold Air Coming Back

Everything above buys time; the fix is the fix. Texas Pros Network connects you with licensed HVAC contractors across the state for repair calls — describe your symptoms and get scheduled.