question in Ballast (11)

Comments

3 comments

  • Avatar
    Rebekka O'Melia (Edited )

    Hi Yanrong,

    This section is discussing the pros and cons of having a separate hot water heating system or using the main heating system to also heat your hot water.

    My house, for example, has hot water heated by the boiler, which is part of the main heating system.  Also, instead of it being direct hot water (every time someone turns on hot water, the boiler would fire and heat water), I have an 80 gallon storage tank.  So the boiler just keeps that 80 gal at a set temp all day. 

    The underlined part of that paragraph talks about a house that is using 2 methods of heating the water - a stand alone system just for water heating (could be an electric water heater or several point of use tankless water heaters), and then supplementing it with water heating from the heating system too.

    Personally, I don't like direct hot water heaters, because if the water is used often and you have several bathrooms, the boiler is firing often.  A system with a tank is better for that.  And like the paragraph said, tankless systems struggle to keep up with high demands like a big bathtub.

    Hope this helps!

    Rebekka O'Melia, B.Arch, M. Ed, Registered Architect, NCARB, ​​Step Up ARE Coaching​​​

     

     

    0
    Comment actions Permalink
  • Avatar
    Shikha Subramanian

    Rebekka O'Melia

    Is this similar to what a mini split system is? When you have two separate systems for heating water and heating/cooling air? I keep hearing the term and I get so confused on what exactly a mini split system does.  

    0
    Comment actions Permalink
  • Avatar
    Rebekka O'Melia (Edited )

    No! A mini split is a small a/c unit without ductwork. Since it has no ductwork, it can only cool one space The evaporator is in the actual space being cooled. It’s usually mounted on an exterior wall, up high. And the condenser is outdoors, as always. See the diagram on this website. https://www.acgeothermaltn.com/mini-splits/mini-split-diagram/
    They are usually used in a retrofit situation where ductwork is impractical.
    Hope this helps!!

    Rebekka O'Melia, B.Arch, M. Ed, Registered Architect, NCARB, ​​Step Up ARE Coaching​​​

     

    0
    Comment actions Permalink

Please sign in to leave a comment.

Powered by Zendesk