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  2. Radioisotope heater unit - Wikipedia

    en.wikipedia.org/wiki/Radioisotope_heater_unit

    Diagram of a radioisotope heater unit. A radioisotope heater unit (RHU) is a small device that provides heat through radioactive decay. [1] They are similar to tiny radioisotope thermoelectric generators (RTG) and normally provide about one watt of heat each, derived from the decay of a few grams of plutonium-238—although other radioactive isotopes could be used.

  3. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

  4. Space heater - Wikipedia

    en.wikipedia.org/wiki/Space_heater

    Fire, burns, and carbon monoxide poisoning are the main risks of space heaters. About 25,000 fires are caused by space heaters in the United States each year, resulting in about 300 deaths. Roughly 6,000 hospital emergency department visits annually in the US are caused by space heaters, mainly from burns. [5]

  5. Do I need to worry about space heaters? Here’s what experts ...

    www.aol.com/lifestyle/worry-space-heaters...

    Space heaters are repeatedly linked with tragedies. Local fire departments responded to an estimated average of 44,210 home structure fires caused by heating equipment, including space heaters ...

  6. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    A hybrid water heater is a water heating system that integrates technology traits from both the tank-type water heaters and the tankless water heaters. [5] It maintains water pressure and consistent supply of hot water across multiple hot water applications, and like its tankless cousins, it is efficient and can supply a continuous flow of hot ...

  7. Space Heater Safety Tips (So Your House Doesn't Go Up ... - AOL

    www.aol.com/finance/space-heater-safety-tips...

    Here are some safety tips to keep in mind when using a space heater in your house. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...