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Heat Pump Questions & Answers

HEAT PUMP BEHAVIOR

A Heat Pump is an air conditioner that is essentially running in reverse.  In an air conditioner, there are two ‘coils’ that the refrigerant are circulated through.  One is the condensor, (hot), the other is the evaporator, (cold).  When running in air conditioning, the indoor coil is cold and we recirculate our indoor air across this coil to absorb the heat, then take it outside to the condensor coil, where we blow outdoor air across it to remove the heat.

Its a matter of heat transfer.  We create an area with an ‘extreme lack of heat’, and absorb the heat from the air around it to transfer it someplace else.

When a Heat Pump is in heat.  The indoor coil is the condensor coil, (hot), and the evaporator coil is outside.  The hope is, that we can absorb heat from the outdoor air and bring it inside.  The problem is, the coil will be so cold that it will frost up and if unchecked, will ice up.  This keeps the unit from absorbing any heat and all you’ll get is cold air in the house when running in heat.

They have a defrost system built into them that is supposed to detect when the outdoor coil is 28 deg F.  Since freezing is 32, if we’re at 28, we’re freezing for sure.  There is a sensor that is supposed to detect this.  The defrost system will check the sensor every so often, (30, 60 or 90 mins depending where the jumpers are set on the board).  When the board see’s the sensor is 28, the unit reverses into air conditioning, thereby warming the outdoor coil and melting the frost/ice away.

WHEN THE UNIT DOES THIS, IT WILL BE IN AIR CONDITIONING AND YOU WILL, MORE THAN LIKELY GET COLD AIR INSIDE THE HOUSE AND QUITE POSSIBLY SEE STEAM COMING FROM THE OUTDOOR UNIT.  DO NOT BE ALARMED!  DO NOT TURN THE UNIT OFF!  ALLOW IT TO RUN AND DE-ICE ITSELF PROPERLY.  TURNING THE UNIT OFF WILL CONFUSE IT AND IT WILL BE LONGER BEFORE IT WILL HEAT PROPERLY!

The defrost cycle shouldn’t take more than about 15 – 20 mins max.  If it does take longer than this, there is more than likely a problem and you’ll need someone out.

Heat pumps were not designed for a really cold climate.  In cold country they will have an outdoor thermostat and it controls a set of electric heat strips.  When it gets below where ever they have the t-stat set, (40 – 45deg), the heat strips would come on and assist the heat pump.   Heat Pumps in the valley are typically not equipped with this option so during the rare occurances that really cold weather sets in, the heat pumps will struggle.

Unless you’re prepared to spend from $300 to $800 to add electric strips and a new circuit from the electric panel, don’t sweat it.  Set the thermostat on a reasonable setting, (68 or below), and let it do its thing while it’s really cold.

If you have other questions you can email me or call the office.

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Markup: HTML Tags and Formatting

Headings

Header one

Header two

Header three

Header four

Header five
Header six

Blockquotes

Single line blockquote:

Stay hungry. Stay foolish.

Multi line blockquote with a cite reference:

The HTML <blockquote> Element (or HTML Block Quotation Element) indicates that the enclosed text is an extended quotation. Usually, this is rendered visually by indentation (see Notes for how to change it). A URL for the source of the quotation may be given using the cite attribute, while a text representation of the source can be given using the <cite> element.

multiple contributors – MDN HTML element reference – blockquote

Tables

EmployeeSalary
John Doe$1Because that’s all Steve Jobs needed for a salary.
Jane Doe$100KFor all the blogging she does.
Fred Bloggs$100MPictures are worth a thousand words, right? So Jane x 1,000.
Jane Bloggs$100BWith hair like that?! Enough said…

Definition Lists

Definition List Title Definition list division. Startup A startup company or startup is a company or temporary organization designed to search for a repeatable and scalable business model. #dowork Coined by Rob Dyrdek and his personal body guard Christopher “Big Black” Boykins, “Do Work” works as a self motivator, to motivating your friends. Do It Live I’ll let Bill O’Reilly will explain this one.

Unordered Lists (Nested)

  • List item one
    • List item one
      • List item one
      • List item two
      • List item three
      • List item four
    • List item two
    • List item three
    • List item four
  • List item two
  • List item three
  • List item four

Ordered List (Nested)

  1. List item one -start at 8
    1. List item one
      1. List item one -reversed attribute
      2. List item two
      3. List item three
      4. List item four
    2. List item two
    3. List item three
    4. List item four
  2. List item two
  3. List item three
  4. List item four

HTML Tags

These supported tags come from the WordPress.com code FAQ.

Address Tag1 Infinite Loop
Cupertino, CA 95014
United States

Anchor Tag (aka. Link)

This is an example of a link.

Abbreviation Tag

The abbreviation srsly stands for “seriously”.

Acronym Tag (deprecated in HTML5)

The acronym ftw stands for “for the win”.

Big Tag (deprecated in HTML5)

These tests are a big deal, but this tag is no longer supported in HTML5.

Cite Tag

“Code is poetry.” —Automattic

Code Tag

This tag styles blocks of code.
.post-title {
margin: 0 0 5px;
font-weight: bold;
font-size: 38px;
line-height: 1.2;
and here's a line of some really, really, really, really long text, just to see how it is handled and to find out how it overflows;
}

You will learn later on in these tests that word-wrap: break-word;will be your best friend.

Delete Tag

This tag will let you strike out text, but this tag is recommended supported in HTML5 (use the <s> instead).

Emphasize Tag

The emphasize tag should italicize text.

Horizontal Rule Tag


This sentence is following a <hr /> tag.

Insert Tag

This tag should denote inserted text.

Keyboard Tag

This scarcely known tag emulates keyboard text, which is usually styled like the <code> tag.

Preformatted Tag

This tag is for preserving whitespace as typed, such as in poetry or ASCII art.

The Road Not Taken
Robert Frost


  Two roads diverged in a yellow wood,
  And sorry I could not travel both          (\_/)
  And be one traveler, long I stood         (='.'=)
  And looked down one as far as I could     (")_(")
  To where it bent in the undergrowth;

  Then took the other, as just as fair,
  And having perhaps the better claim,          |\_/|
  Because it was grassy and wanted wear;       / @ @ \
  Though as for that the passing there        ( > º < )
  Had worn them really about the same,         `>>x<<´
                                               /  O  \
  And both that morning equally lay
  In leaves no step had trodden black.
  Oh, I kept the first for another day!
  Yet knowing how way leads on to way,
  I doubted if I should ever come back.

  I shall be telling this with a sigh
  Somewhere ages and ages hence:
  Two roads diverged in a wood, and I—
  I took the one less traveled by,
  And that has made all the difference.


  and here's a line of some really, really, really, really long text, just to see how it is handled and to find out how it overflows;

Quote Tag for short, inline quotes

Developers, developers, developers… –Steve Ballmer

Strike Tag (deprecated in HTML5) and S Tag

This tag shows strike-through text.

Small Tag

This tag shows smaller text.

Strong Tag

This tag shows bold text.

Subscript Tag

Getting our science styling on with H2O, which should push the “2” down.

Superscript Tag

Still sticking with science and Albert Einstein’s E = MC2, which should lift the 2 up.

Teletype Tag (obsolete in HTML5)

This rarely used tag emulates teletype text, which is usually styled like the <code> tag.

Underline Tag deprecated in HTML 4, re-introduced in HTML5 with other semantics

This tag shows underlined text.

Variable Tag

This allows you to denote variables.