A no-nonsense guide for cold snaps when power may fail
Houston freezes are rare. When they happen, they hit hard. However, most Houston homes are built for heat, not long periods of cold. As a result, damage is common. Burst pipes, power outages, and costly repairs follow quickly. Therefore, preparation must happen before temperatures drop.
1) Water & Plumbing — Your #1 Risk
Most importantly, shut off and drain exterior faucets. Install insulated covers on all outdoor spigots.
In addition, wrap exposed pipes in the attic, garage, crawlspace, and exterior walls. Use foam insulation or heat tape rated for freezing.
For example, drip interior faucets when temperatures stay below 32°F. Do this for both hot and cold lines. Pay close attention to exterior walls.
At the same time, know where your main water shutoff is located. Keep the shutoff key nearby. If a pipe breaks, seconds matter.
Meanwhile, open sink cabinets on cold nights. This allows warm air to circulate around plumbing.
Hard truth: one burst line can cost more than a year of inspections. Because of this, scheduling a professional home inspection before a freeze can help identify vulnerable plumbing and insulation issues.
2) Power Outages & Generators — Plan for Darkness
Beforehand, fuel now, not later. Store stabilized gasoline or propane safely and legally. Do not rely on last-minute supply runs.
Likewise, test your generator under load before the freeze arrives.
However, never run generators indoors or inside garages. Place them outside and downwind. Keep them at least 20 feet from doors and windows.
In addition, use extension cords rated for outdoor and winter use only.
As a result, battery banks become essential. Use them for phones, routers, and medical devices.
Carbon monoxide kills silently. Therefore, never improvise with fuel-burning equipment. According to the CDC, carbon monoxide poisoning risk increases during power outages when generators are used improperly.
For a deeper explanation of household CO risks, see our guide on carbon monoxide poisoning and home safety.
3) Heating Systems — Gas ≠ Guaranteed
First, service your furnace annually. Change the filter now.
However, gas heat still depends on electricity. Ignition systems and blowers will not run during outages. Because of this, plan backup heat in advance.
Similarly, use space heaters with tip-over protection. Keep three feet of clearance at all times. Never leave them unattended.
Finally, check fireplace dampers and flues. Always use a screen. Never use indoor grills or open flames.
4) Water Heaters — Protect the Workhorse
In many cases, insulating the tank prevents freeze damage. This is especially important in garages and attics.
At the same time, know where the gas shutoff is located. Only relight the unit if the manufacturer allows it.
Otherwise, do not let the unit freeze. A frozen tank can rupture.
5) Refrigeration & Food — Outage Reality
Meanwhile, freeze jugs of water ahead of time. This helps freezers stay cold longer.
In addition, place thermometers in the fridge and freezer. They help you decide what food is safe after power returns.
As a rule, keep doors closed. A full freezer can hold temperature for about 48 hours if unopened.
6) Roofs, Attics & Vents — Hidden Failure Points
Before the freeze, clear debris from roof valleys and drains. This helps prevent ice buildup.
Likewise, check attic insulation over plumbing runs. Thin insulation increases freeze risk.
Finally, verify vent terminations are clear. Make sure insulation or nests are not blocking airflow.
7) Vehicles & Mobility — Houston Roads Are Not Chicago
At minimum, keep fuel tanks at least half full.
In addition, use windshield washer fluid rated for freezing temperatures.
Most importantly, carry an emergency kit. Include blankets, water, a flashlight, and a phone charger.
8) Documentation & Insurance — Be Ready to Prove It
Ahead of time, photograph valuables and key systems. Do this before the freeze begins.
Then, review your homeowner’s policy. Know what is covered and what is not.
As a result, keep all receipts for mitigation supplies.
9) Pets & People — Don’t Forget the Basics
Above all, bring pets indoors. Cold stress is real.
Likewise, water bowls freeze quickly. Use heated bowls or replace them often.
Finally, check on elderly neighbors. Community saves lives.
Houston doesn’t need panic. It needs preparation. Therefore, handle the basics early. Do not assume the grid will behave. Never gamble with carbon monoxide. If needed, get professional eyes on plumbing, insulation gaps, or generator safety before the forecast turns ugly.
