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Thermal expansion and contraction are the two main reasons why heat exchangers crack. When the fluid flowing through the heat exchanger changes temperature, it causes the metal tubes inside the exchanger to expand and contract. If these movements are too large, they can cause the tubes to break, resulting in a cracked heat exchanger.
There are a few things you can do to try to fix hot and cold spots in your home. First, check your insulation and make sure that it is adequate. You may also need to add more insulation in specific areas where the problem is occurring. If that doesn’t work, you can try adjusting your air conditioning or heating unit so that it is blowing more air directly onto the affected areas. Finally, you can purchase a portable heater or cooling fan to place in specific trouble spots.
In general, portable heaters are a convenient way to add supplemental heat to a room without having to turn up the main thermostat. This can be especially helpful in colder weather when you want to keep a specific area of the house warmer without overheating the rest of the house. However, there are a few things you should keep in mind before purchasing one. First, make sure you check the electricity requirements of the heater and make sure your outlet can handle that amount of power. Second, be aware that portable heaters can be fire hazards if not used properly, so always follow the manufacturer’s instructions and never leave a heater unattended. Finally, consider how often you’ll actually use the heater.


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