Notices

Any HVAC guys out there?

Old 01-18-2007, 06:02 PM
  #1  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Jun 2006
Location: Marietta, GA
Posts: 433
Default Any HVAC guys out there?

Just got home work work and saw my outside heat pump unit frozen. All of the fins have frost on them except for a band about 2 inches tall about a foot up from the bottom. As I was typing this, I heard the unit go into defrost mode (swishing sound) I went outside and the unit is still covered in frost. It's 36 degrees here and misting rain. I don't believe I have ever seen this before. Is this something to be concerned about?

By the way my power bill was the highest it's ever been last month and it was not really cold at all.
scboater is offline  
Old 01-18-2007, 06:36 PM
  #2  
Senior MemberCaptains Club Member
 
Join Date: Aug 2004
Location: annapolis, md
Posts: 349
Default Re: Any HVAC guys out there?

coils inside house in furnace dirty as in not moving enough air can casue freeze up, or low on gas
morechaching is offline  
Old 01-18-2007, 06:43 PM
  #3  
Senior MemberCaptains Club MemberPLEDGER
 
Join Date: Jan 2006
Location: Jax Fla,Horseshoe Beach Fla
Posts: 13,398
Default RE: Any HVAC guys out there?

if it is in heat mode it will freeze up.i would check your filters just to make sure
tommyr904 is offline  
Old 01-18-2007, 07:13 PM
  #4  
Senior MemberCaptains Club Member
 
Join Date: Jun 2005
Location: shelby twp MI
Posts: 1,783
Default Re: Any HVAC guys out there?

Change your filters!!!!!!!

tinmarine is offline  
Old 01-18-2007, 07:32 PM
  #5  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Jun 2006
Location: Marietta, GA
Posts: 433
Default Re: Any HVAC guys out there?

Filters are brand new. They are those high end 3M filters that cost $16 a piece.
scboater is offline  
Old 01-18-2007, 07:39 PM
  #6  
Senior MemberCaptains Club Member
 
Join Date: Jun 2005
Location: shelby twp MI
Posts: 1,783
Default Re: Any HVAC guys out there?

PM sent

tinmarine is offline  
Old 01-18-2007, 08:21 PM
  #7  
Senior MemberCaptains Club Member
 
Join Date: Feb 2005
Location: Greenville, NC
Posts: 1,680
Default Re: Any HVAC guys out there?

Frosting is normal especially when the humidity is up and at that temperature. You should see most of that go away during defrost but quickly reappear after when the reversing valve switches back. Really at that temperature yor unit is not operating as efficently as it does at higher outdoor temps and less humidity. If it is frozen then it could be low on charge or something else but froting is normal.
gary240 is offline  
Old 01-18-2007, 10:32 PM
  #8  
Senior MemberCaptains Club Member
 
Join Date: Feb 2004
Location: Raleigh & Surf City, NC
Posts: 12,836
Default Re: Any HVAC guys out there?

It will frost/ice up under some outdoor conditions. At 36 deg. outdoor temperature the unit should maintain set temperature inside house without the aux. electric strips coming on. When the heat has been running for several minutes without the electric strips on (no blue light or other indicator) check the temperature rise. Get a reading of air temperature being pulled into the return and a reading of the temperature coming out a supply near the air handler. This differance will vary greatly depending on outdoor temperature but should be between 10-40 degree temperature rise. Housecall to SC, $2500 - your families comfort, priceless
baypro21 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread