You answered you own question: at freezing.
At or near 32 degrees F your pump should be turned to keep water moving. moving water doesn't freeze.
It is important that any exposed pipes, filter and pump have moving water at freezing as this water will freeze first and cause the item to crack. That's expensive as compared to the few cents it costs to operate the pump.
Water starts to freeze at 32 degrees. So it best to turn pump on at approx. 35 degrees & leave on until the tempt. rises to 35
At least one degree above freezing?
I would seriously consider turning it on at 0 degrees Celsius.
you have to have good insulation wherever you have the pipes in your house or apartment. This will keep your pipes from freezing and bursting. :)
There is no single best way to keep pipes from freezing. Insulating (wrapping) pipes is a common method. Leaving the cold water faucet open just enough for a slow drip is another method to prevent freezing.
No, it won't help at all. You need to keep the pipes above freezing temperature (32oF, 0oC) and if it happens often (like for more than two weeks a year) you should invest in insulation.
insulation in the wall
by keeping your pipes above 32F degrees and to do this is installing heat tape and insulation around your pipes or just insulation if your climate isn't so cold.
Usually above freezing, and keep the caulking from freezing also.
You must keep water pipes from freezing because when water is cooling to the point of freezing, the particles contract. But eventually when frozen too long the ice expands, not melting but expands which can damage the actual pipe.
A lot of times the flow from dripping faucets actually prevents the pipes from freezing up.
Fill with anti freeze solution or keep the water running.
Wrap them in insulation and keep the water flowing through them at all times. If electricity is available, they can be wrapped in electrical pipe heating tape to keep them above freezing temperature. Insulation over this tape will still help (if the manufacturer of the heating tape indicates it is OK and won't cause overheating).
Assuming you don't mean water heating systems, and just mean normal fresh (drinking) water systems, then they freeze at 0 degrees Centigrade like all water. But in the case of for example a home, the plumbing protected from freezing in a few different ways. Firstly most homes that are lived in have some form of heating, so this keeps the ambient temperature of the water in the pipes above freezing. Pipes that are in places more likely to be exposed to freezing, such as lofts, and roof cavities will be insulated with pipe lagging to protect them from freezing. Plus remember those pipes in roof cavities will benefit from heat rising from the home/building, helping to keep those pipes above freezing. If the subject of your question is in relation to 'burst' pipes caused by frozen water in the pipes expanding and literally tearing the pipes apart, then this will start to happen at about 20 Degrees Fahrenheit or -6 degrees Centigrade. Remember that a little freezing is not a major problem, as plumbers sometimes use special freezing kits, that will freeze a short section of pipe to block it off temporarily, while they work on the pipes.
If your pipes freeze and burst, the damage could be extensive, and the repair could be costly. If your home has exposed pipes, wrap them in heat tape. That way, when the weather gets very cold, the heat tape will warm the pipes and keep them from freezing. Even if your area does not usually have hard winters, make sure to protect your pipes just in case. You could have an unusually cold winter. Remember to insulate any pipes in your garden as well. These pipes can cause damage if they freeze, even if they are far away from your house.
In a location where the temperature does not fall below the freezing point (32 degrees Fahrenheit)
There's a handy article on the Liberty Mutual Solutions site with tips on how to prevent your pipes from freezing when the temperature outside drops. Here are a couple of highlights: -If water supply lines are in your garage, keep garage doors closed. -If you're going away during cold weather, leave the heat on in your home, set to a temperature no lower than 55ºF You can find some more crucial prevention tips in the full article included in the related links below.
Copper pipes are used for plumbing. They are usually in interior walls or the basement. Typically, at least here in the North east, you would try to keep them out of exterior walls to keep them from freezing.
Salt lowers the freezing temperature of water, which means that it has to be colder for the water to freeze.
Believe it or not, you can keep water protected in Antarctica by keeping it in a fridge. The temperature is so cold that a fridge could keep it safe from freezing.
A freezer, a very freezing temperature, etc.
If you keep the surrounding temperature below or around freezing point... yes.
Undersoil heating involves the placement of warm water pipes underneath the field. Warm water is circulated through the pipes to keep the field from freezing or from icing over.
it is colder than ice _________________ Wrong. It is not colder than ice. The ice helps keep the temperature ABOVE freezing. The occupants' body heat helps keep it above freezing.
It will certainly not keep the water in the bucket from freezing and, if the temperature goes low enough, the bottled salt water will also freeze.
It is not necessary to freeze mercury for storage.