In Columbus, the normal first 32°F reading arrives on 27 October and the normal last one on 18 April. Pipes burst mostly from December through February, with some risk in November and March. Exterior walls, garages, crawl spaces and attics freeze first. Most leaks show up as a frozen pipe thaws, so shut the water off at the main first.
Key takeaways
- The normal first 32°F reading in Columbus falls on 27 October, and one year in ten it arrives by 14 October.
- The normal last 32°F reading is 18 April, and the latest on record is 16 May.
- Burst and frozen pipe calls cluster from about December to February, with shoulder risk in November and March.
- Pipes in exterior walls, unheated garages, crawl spaces, attics and hose bibs with a hose still attached are the first to freeze.
- A frozen pipe often leaks only when it thaws, which is why calls rise on the warm-up rather than on the coldest night.
- Shutting the water off at the main comes first, and EPA guidance is to dry wet areas within 24 to 48 hours to limit mold.
When does the first hard freeze hit Columbus?
The normal first 32°F reading in Columbus is 27 October, but the real date can move by weeks in either direction. Nine years in ten, the first freeze has arrived by 7 November, and the latest on record is 27 November.
These dates come from National Weather Service climate normals for Columbus, based on 1991 to 2020 observations at the KCMH station. Normals describe the typical year, not a forecast for this winter. One year in ten, the first 32°F reading comes by 14 October, so the early side of the range is not far off the normal date. The calendar tells you when to start checking the house, not when a particular street will freeze.
Spring runs on the same kind of calendar. The normal last 32°F reading is 18 April, with an early side of 4 April and a late side of 5 May. The latest last freeze on record is 16 May, so cold-weather habits should not be packed away after the first mild week of March. The National Weather Service cautions that topography, urban setting and instrument placement all change local temperatures, which is why no one can say which block will freeze on a given night.
Which pipes freeze first in a Columbus house?
Pipes in exterior walls, unheated garages, crawl spaces and attics freeze first, along with outdoor hose bibs that still have a hose attached. Vacant rentals and student houses over winter break are also at risk because nobody is inside to notice a problem.
The pipes most exposed to cold are the ones with the least heat around them. In a Columbus house that means supply and drain lines that run through exterior walls, plumbing in an unheated garage, and anything in a crawl space or attic. Those spaces sit outside the warm living area, so a cold snap reaches them before it reaches the kitchen or the basement.
Older housing adds another layer. Pre-war neighborhoods such as Clintonville and Franklinton commonly have galvanized supply lines, and many post-war houses have galvanized or early copper supply. Newer suburban homes often use PEX or copper, but an exposed run in a garage or crawl space still freezes like any other pipe. Disconnecting garden hoses before the first freeze is a simple habit, and the older-home guide on this site covers the plumbing in more detail: older Columbus home plumbing.
Why does a frozen pipe often leak only after it thaws?
A frozen pipe can split while it is still solid, but the water often stays hidden until the ice melts and the line carries pressure again. That is why the warm-up brings more calls than the cold night itself.
Ice inside a pipe blocks the flow, so the line can look dry and quiet for days. Once the ice softens, water can move again through a crack that formed in the cold, and the leak appears somewhere else entirely, such as a ceiling below an upstairs bathroom or a basement floor. That distance between the break and the damage is what makes the source harder to trace.
A quiet pipe is not proof that everything is fine. After a cold snap, check fixtures, outlets and the floor near exterior walls, and look at ceilings for new stains. If a thaw brings a drip, shut the water off at the main to limit how much more water gets in, then have a licensed plumber look at the pipe itself. The drying work can start as soon as the water is stopped.
What should you do in the first hour after a pipe bursts?
Shut the water off at the main, keep clear of standing water near outlets, the furnace and the electrical panel, and photograph the damage before anything is moved. Call your insurer early, and call for drying help as soon as you can.
Find the main shut-off and close it. If the water is near an outlet, the furnace or the panel, stay out of it, and do not wade in to reach the valve. Those are the steps that come first, because they protect people before they protect the house. Stopping the flow also keeps the affected area from spreading into the next room while you make calls.
Photograph the broken pipe, the water line on the walls and any wet flooring before you move furniture or pull up wet material. A crew can give you moisture readings and photos for your claim. Water also changes character with time: a burst supply line usually carries clean water, which is Category 1 under the IICRC S500 water damage standard, while washing machine discharge is Category 2. Water gets worse as it sits, so do not wait. Phones are answered 24/7 at (833) 490-5225, and a crew is dispatched as fast as one is available.
Who fixes the pipe, and who dries the house?
The crew handles cleanup, drying and the repair of finished materials after the water is stopped. Fixing the pipe itself is plumbing work, which goes to a licensed plumber, and in Columbus that plumber is also registered with the city.
Drying is the crew's job. It checks for hidden moisture with moisture meters and thermal imaging, sets air movers and dehumidifiers, and re-checks readings until materials are dry. Repairs such as drywall, trim and flooring are quoted after drying, once someone has seen the wet area. The emergency stage, which covers extraction and drying setup, is explained and approved before work starts.
Plumbing work is licensed in Ohio. The state board licenses commercial plumbing contractors, and city building departments handle residential registration. In Columbus, a plumbing contractor needs the state license, is registered with the city under that business name, and posts a bond. Trade permits are pulled by the registered contractor after the building permit is issued. An owner may pull a plumbing permit only for their own work on a single-family home they live in, and may not buy one for work a contractor will do. Building and Zoning Services can be reached at 614-645-7433, and plumbing inspections at 614-645-8355. Outside Columbus, the county or city building department where the house sits handles this instead. Readers can ask any company which license it holds and check it with the issuing office.
What does homeowners insurance usually do with a burst pipe?
A standard homeowners policy generally responds to sudden and accidental water damage, such as a burst supply line, but it generally does not cover long-term leaks. Your own policy decides the outcome, so check it or ask your agent.
A sudden break is the general pattern for coverage, and a slow drip that soaks a floor over months is the general pattern for exclusion. The wording of your policy and the decision of your insurer control the result, not this site and not the crew. Ask your agent what your policy says about water damage before you assume either way, and keep every receipt and photo.
The crew can document the damage for your claim, including moisture readings and photos, but coverage is decided by your insurer. If you disagree with how the insurer handled the matter, the Ohio Department of Insurance takes consumer complaints at 800-686-1526. It reviews whether the insurer followed the policy terms and state insurance law. It does not settle disputes over how much damage is worth. How claims usually work in Ohio goes further into the general pattern.
What should you do in the days after a thaw?
Dry wet materials within 24 to 48 hours to limit mold, check for water in places that showed no leak at first, and report a broken city water main to 311. Mold can trigger allergy and asthma symptoms in some people, so treat a damp area as a job, not a nuisance.
EPA guidance is to dry water-damaged areas and items within 24 to 48 hours to prevent mold. Small patches differ from large ones: a moldy area under about 10 square feet can usually be cleaned by the homeowner, while larger areas, mold linked to sewage and mold in the HVAC system call for professional help. Ohio does not license mold remediation the way some states do, so ask any company which standard it works to. The IICRC is an industry body, not a licensing agency, and readers can ask which certifications each technician holds. The burst pipe cleanup service and the frozen pipe cleanup service cover the drying side of this work.
Water main breaks are a separate problem with their own reporting route. The city says breaks are more common in winter, because extreme cold and temperature swings shift the ground and traffic over frozen ground adds strain. Report a break at 311 or 614-645-8276, and after hours call 614-645-7788. If the break is in the city line rather than the house, the city handles it. A break inside the house is a licensed plumber's job, and drying should start either way.
Frequently asked questions
When is the first freeze usually in Columbus?
The normal first 32°F reading in Columbus is 27 October, and one year in ten it comes by 14 October. Nine years in ten it has arrived by 7 November, and the latest on record is 27 November. These are National Weather Service normals, so use them to plan rather than as a promise for your street. Pipes are most at risk from December through February.
Will my insurance cover a frozen pipe?
A pipe that bursts suddenly is generally the kind of event a standard homeowners policy responds to, while long-term leaks generally are not covered. Coverage is decided by your insurer under your own policy, so check the policy or ask your agent. Take photos before anything is moved and call your insurer early. The crew can document the damage and provide moisture readings for your claim.
Can I fix a burst pipe myself?
Plumbing repair is not part of the cleanup work, and a licensed plumber is the right call for the pipe itself. In Columbus, a plumbing contractor must hold the state license and be registered with the city. A property owner may pull a plumbing permit only for their own work on a single-family home they live in, and may not buy one for work a contractor will do. Check with the building department before any repair starts.
Who do I call if the street water main breaks?
Report a water main break to 311 or 614-645-8276. After hours, call 614-645-7788. The city says breaks are more common in winter, because extreme cold and temperature swings shift the ground. A break in the city line is the city's to fix, while a leak inside the house is a plumber's job. Start drying the wet area either way.
How quickly does a crew get dispatched?
Phones are answered 24/7, and a crew is dispatched as fast as one is available. No arrival time is promised. The emergency stage, covering extraction and drying setup, is explained and approved before work starts. Repairs after drying are quoted separately, after someone has seen the wet area.
Is mold a serious risk after a pipe bursts?
Drying within 24 to 48 hours is the step that limits mold, according to EPA guidance. Mold can trigger allergy and asthma symptoms in some people. Ohio does not license mold remediation the way some states do, so ask any company which standard it works to. The IICRC S500 standard covers water damage restoration, and readers can ask which certifications each technician holds.
Sources
This guide is general information for Franklin County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.