Physicsist's answer: no. If the pipe is completely empty, there will be no water to freeze. The water vapour in air will not be able to condense on it either, because your house's walls (and pipes) will be slightly warmer than the ambient temperature on a typical day.
How to prevent your water pipes from freezing?
Tips to help prevent pipes from freezing
- Insulate pipes. Pipe insulation in your home's crawl spaces and attic helps even if you live in a climate where freezing is uncommon. ...
- Use heat tape or heat cables. Heat tape or thermostatically controlled heat cables can be used to wrap pipes. ...
- Seal leaks. ...
- Secure outdoor hoses, valves and faucets. ...
- Let water drip. ...
- Adjust the thermostat. ...
- Open cabinet doors. ...
What should you do if your water pipes freeze?
- Identify the frozen pipe by looking for areas on the pipe that could be frosted or have ice on it.
- Heat the pipe from the faucet toward the frozen area.
- A hair dryer is the best and safest way to thaw a frozen water pipe. ...
- Heat lamps and portable heaters work well when set up under a kitchen or vanity base cabinet. ...
What type outdoor pipe will not freeze?
Yard hydrants are commonly-used types of outdoor faucet, preferred in home and industrial settings. They have a non-freeze design and are ideal for all environments. These appliances are found in farms, rural residences, and campgrounds. A yard hydrant has a handle on the head controlling its operation.
Which pipes are more likely to freeze?
Pipes that are more likely to freeze in in your home or building include: Pipes in exterior walls where the heat from the building may not help them remain thawed Pipes that may run through a part of the building which is not in use and is not being heated Pipes hidden under sinks, especially sinks that are next to outside walls

Can pipes freeze with no water?
The Temperature Is Right Pipes cannot freeze if it is not cold enough outside for them to do so. Water does not freeze when it is 60 degrees Fahrenheit outside, and neither do pipes.
How do you keep your pipes from freezing without water?
In addition to conducting regular winter home maintenance, protecting pipes from freezing is important....Tips to help prevent pipes from freezingInsulate pipes. ... Use heat tape or heat cables. ... Seal leaks. ... Secure outdoor hoses, valves and faucets. ... Let water drip. ... Adjust the thermostat.More items...
How cold does it have to be for pipes to freeze?
At What Temperature Do Pipes Freeze? The freezing temperature of water is 32 degrees Fahrenheit.
When should I worry about pipes freezing?
about 20 degrees FahrenheitAs a general rule, the “temperature alert threshold” for freezing pipes is about 20 degrees Fahrenheit.
Do all faucets need to drip to prevent freezing?
should you leave a faucet dripping? Yes, it's recommended you leave a faucet on with water at a drip to keep pipes from freezing. If you know where the water comes into your house, turn on a faucet at the opposite end to keep the water circulating.
How long will it take for pipes to freeze?
six to eight hoursPipes can freeze in as little as six to eight hours, meaning they can freeze overnight. If the outside temperature is below 32 degrees F and your pipes are unprotected, your chances for a frozen pipe increase.
At what temp do you need to drip faucets?
When a cold snap hovers around or below 20 degrees Fahrenheit (-6 degrees Celsius), it's time to let at least one faucet drip. Pay close attention to water pipes that are in attics, garages, basements or crawl spaces because temperatures in these unheated interior spaces usually mimic outdoor temperatures.
How fast should water drip to prevent pipes from freezing?
A dripping faucet wastes some water, so only pipes vulnerable to freezing (ones that run through an unheated or unprotected space) should be left with the water flowing. The drip can be very slight. A flow of one gallon per hour is enough to prevent freezing.
Can you flush the toilet if your pipes are frozen?
If the supply line to the toilet has frozen, you can still flush it once because you have access to the water stored in the tank and not frozen. However, after one flush, the tank can't fill back up due to the frozen pipe.
How long can a house go without heat before pipes freeze?
roughly 6-hoursThe rule of the thumb is that it takes roughly 6-hours for water in your pipe to freeze after left in an unheated area. Meaning if you lose power at your home and the weather is reaching below freezing point, you have approximately 6-hours until the pipes will begin to freeze.
How do you tell if pipes are frozen?
One of the earliest signs of a frozen pipe is reduced or no flow out of a plumbing fixture, like a faucet, shower, or toilet. If plumbing pipes are visible, frost or bulging are other good indicators of a frozen pipe.
At what temperature will pipes burst?
Even so, outside temperatures generally have to fall to about 20 degrees Fahrenheit or below before your pipes will freeze or burst due to freezing.
At what temperature should you drip faucets?
When a cold snap hovers around or below 20 degrees Fahrenheit (-6 degrees Celsius), it's time to let at least one faucet drip. Pay close attention to water pipes that are in attics, garages, basements or crawl spaces because temperatures in these unheated interior spaces usually mimic outdoor temperatures.
How much drip Do I need to prevent frozen pipes?
A dripping faucet wastes some water, so only pipes vulnerable to freezing (ones that run through an unheated or unprotected space) should be left with the water flowing. The drip can be very slight. A flow of one gallon per hour is enough to prevent freezing.
How do you winterize a vacant house?
Follow the checklist below to help avoid any unwanted surprises when you return.Turn off the water supply. ... Drain the waterlines. ... Insulate pipes. ... Turn down the heat. ... Unplug all appliances. ... Throw out the trash.
How do you keep your pipes from freezing when the heat is off?
Apply heat to the section of pipe using an electric heating pad wrapped around the pipe, an electric hair dryer, a portable space heater (kept away from flammable materials), or by wrapping pipes with towels soaked in hot water.
What Happens When Pipes Freeze?
Water expands when it freezes, so sometimes pipes burst when they freeze. This can result in hundreds or even thousands of dollars in damage, depending on where the burst occurs, how long it takes to catch the problem, and how much water is leaking from the pipe.
How cold does it have to be outside to freeze water pipes?
As a general rule, temperatures outside must drop to at least 20 degrees or lower to cause pipes to freeze. In northern climates, where the temperatures regularly fall below freezing, modern homes tend to be well insulated and water pipes are located on the inner parts of the house for extra protection. In older homes, this is not always the case.
How Can I Prevent My Pipes From Freezing?
Insulation can help protect your pipes from freezing temperatures. Commercial self-adhesive insulation is available at hardware stores and home improvement centers. Insulate the pipes on the outside of the home first, because these pipes are the most likely to freeze. If you don’t want to pay money for specialty insulation , simply wrapping your pipes in newspaper or blankets can help.
How to stop pipes from bursting?
To prevent your pipes from bursting, open up your faucets to a slow dribble when temperatures outside drop. This will relieve the pressure inside the pipes, so that if your pipes do freeze, the ice won’t cause a rupture.
What is an uninsulated pipe?
Uninsulated pipes. Pipes located on outer walls of the home. Pipes located in the attic, basement, unheated garage and crawl space. Pipes made of copper or galvanized steel. Assume your home is vulnerable if you’ve had problems with freezing pipes in the past.
What temperature does water freeze at?
This is a complicated question that has been thoroughly explored by experts. There is no simple answer. Water freezes at 32 degrees Fahrenheit, but indoor pipes are somewhat protected from outdoor temperature extremes, even in unheated areas of the house like in the attic or garage.
Why are hard freezes more problematic in southern climates?
In southern climates, hard freezes can be more problematic because homes there are not built to accommodate cold temperatures. The most vulnerable pipes are: Uninsulated pipes. Pipes located on outer walls of the home.
How to prevent frozen pipes?
Here are 5 tips to help prevent frozen pipes: The first priority before a freeze warning should be to make sure your pipes are insulated. Pipes that are located in areas that are exposed to the elements or not insulated well should be wrapped with foam insulation for protection. Simple pipe insulation is readily available ...
How to drain water from pipes when there is no water?
To drain your pipes, shut the main water valve for the house off. Then run a faucet until you have drained all the water from your pipes.
What to do if your pipes are cracked?
High Priority Plumbing is available 24/7 to help with emergencies such as leaks from frozen pipes.
Why is it important to keep water flowing through faucets?
So when you keep the water moving through all of your faucets at a trickle, it will prevent ice from forming inside the pipes. Repair any clogged drains. Clogs are a problem because they prevent water from moving and thus can be a source for stagnant water that can form ice and potentially burst your pipes.
Why are kitchen pipes bursting?
Pipes installed in kitchen cabinets can also be vulnerable because they often are not insulated well. During the freeze period, open a faucet to let it trickle. The problem with your pipes bursting during a cold spell is that stagnant water inside the pipe freezes.
Can you drain pipes during a freeze warning?
Although this is a good strategy to save energy, it can backfire terribly during a freeze warning. You need to use a very different strategy to keep your pipes warm so they don’t get frozen. Drain your pipes to remove any excess water. This can help if you go away on a business trip or vacation during very cold weather.
What Causes Your Sewer Lines to Freeze?
Water can get trapped in your sewer lines, causing them to freeze when temperatures drop below 0. Freezing temperatures will cause water to expand, freeze, and cause blockages inside of the pipe. In more severe cases, the blockage can eventually form into a crack or break.
Other Causes of a Frozen Sewer Line
There are a few things that can cause a sewer line to freeze. As an additional safety precaution, it’s always wise to know where your sewer pipes are located.
How Can You Tell If Your Pipes are Frozen?
There are a few ways to tell that your sewer lines are frozen. The sooner you recognize these signs, the more quickly you can fix the problem before it turns into a bigger problem.
How to Prevent Your Pipes from Freezing
No one wants to have to deal with frozen pipes, especially in the winter. Set yourself up for success this winter by following these preventative measures:
Sewer Pipe Inspections
If you’re having troubles with your sewer pipes, contact Cornerstone Home Inspections. Give us a call at 1-800-648-6187 to learn more about our sewer pipe inspections!
How to keep water flowing when it's freezing?
If the temperature is going to be at or below freezing, the goal is to leave your faucet trickling enough to keep the water flowing. This acts as a relief valve because frozen pipes can build up a lot of pressure. Keep an eye, though, on your faucets. All you need is a slow trickle because too much water going down the drain can also cause the drainpipe to freeze. Make sure to turn off the water when the temperature is above freezing. That trickle and increase in water usage are worth it to prevent a pipe from cracking, bursting, and flooding your home.
Why are hose bibs installed at a downward angle?
What makes these different and a good idea for winterizing your home’s pipes? Because frost-free hose bibs are inside the wall and are installed at a downward angle, gravity drains the water from the pipes when it’s turned off. Leaving little to no water in the pipes that can freeze.
Why is it important to cover a faucet?
Covering and insulating the faucet helps prevent any heat loss and protects against the outside elements.
Can a garden hose pop in the winter?
Garden hoses filled with water can become a popsicle in the winter! Any water left in the hose will freeze. To make matters worse, the water pipe can crack if the ice in the hose backs up into the pipe. That’s why it’s important to unhook, drain and store your garden hoses for the winter.
Can you insulate a pipe?
In addition to sealing cracks, you can insulate your pipes. This is especially important for those pipes that are not in the heated areas of your home like your garage, attic, and crawl space. It’s best to use both insulation and a heat cable. It heats the pipe and keeps the warm air on the pipe.
What is the best material for piping?
Pipes, in general, are located near the natural grade line of a site (ground level). They can either be made out of PVC, copper, and steel. The most resistant to freezing and economical piping among the three is PVC (plastic) due to its lightweight, ease of installation, and insulation.
Do fireplaces lower electricity bills?
Fireplaces and stoves are an excellent option for lowering your electricity bills. However, the main issue with them is that they require good ventilation and constant maintenance to work.
Can you insulate a basement?
There are many different options for insulating/heating your basement; choosing which one to install will depend on your basement’s conditions (ex. Moisture) and your budget. The general gist is that you should consistently maintain a temperature that prevents your fixtures from getting damaged.
Will pipes freeze in an unheated home?
Yes, your pipes can freeze if your home is unheated. Although pipes located throughout your house are in a better location, compared to pipes below the grade level, if the temperature drops low enough inside your home, then it’s still possible for them to freeze.
What causes a drain to freeze?
What Causes Building Drain Pipes to Freeze? 1 A building main drain or other building drain pipe is exposed to freezing temperatures outdoors 2 A building drain is routed through an un-heated crawl space or basement, or an attic or attic knee-wall that is unheated indoors 3 A plumbing fixture drain trap extends down into an un-heated crawl space or basement or is in the path of a cold draft even if the crawl space or basement is heated. 4 A toilet is running or a faucet dribbles continuously into the drain system 5 A water softener or other water treatment equipment is left on and running improperly, perhaps sending a continuing stream of water into the drain system 6 A roof gutter drains into the sewer piping (bad), perhaps through a drain line that enters the building (still worse) en route to the sewer connection; clogged gutters that dribble water slowly into the drain system increases the freeze risk.
What happens when water runs slowly into a drain pipe?
In freezing weather a slow drip or water running slowly into a drain pipe can lead to ice build-up, a frozen or even a frozen and burst drain pipe, or a water backup into the building.
What is a bad drain line for a roof?
A roof gutter drains into the sewer piping (bad), perhaps through a drain line that enters the building (still worse) en route to the sewer connection; clogged gutters that dribble water slowly into the drain system increases the freeze risk.
What happens if a drain line is blocked?
If the outside (or inside for that matter) building drain piping is not properly sloped it will clog. If the drain line is blocked, the holding of wastewater in a drain line that is above the frost line means that in prolonged cold weather the line will freeze and often will burst.
How deep should a plastic drain pipe be buried?
Plastic drain pipes are usually buried at least 18" and bedded in sand to avoid mechanical damage to the pipe.
What is a plumbing fixture drain trap?
A plumbing fixture drain trap extends down into an un-heated crawl space or basement or is in the path of a cold draft even if the crawl space or basement is heated. A toilet is running or a faucet dribbles continuously into the drain system.
How much frost line was there in the 1930s?
In the 1930's in a cold winter with little snow cover the frost line extended down to 30". So to be safe, and if you plan to move to Colorado, assume the frost level there is at least 20-inches and 30-inches would be safer. [8] . OK, let's look for a better answer.
