Heat Pump Frosting - HVAC - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC


Thread Tools Display Modes
Old 01-02-2016, 08:03 AM   #1
Join Date: Apr 2014
Location: Cincinnati, Ohio
Posts: 306
Rewards Points: 461

Heat Pump frosting

Was outside this morning cleaning up and noticed that the heat pump outside has a little bit of frost on the coils. Is this something I should be concerned about? Is it not as effective when it does this?

The weather when I seen it frosted slightly was

22 degree windchill
24 degree dewpoint
83% humidity

Indoor temp
set at 73 degree
actual temp 73
Humidity 36%


cincinnati guy is offline   Reply With Quote
Old 01-02-2016, 08:13 AM   #2
Join Date: Nov 2014
Posts: 1,947
Rewards Points: 3,892

Sounds like it was pretty cold in your area.
Frosting is normal. That's what the defrost control in the unit is for. Heavy ice/thick frost is not normal.


roughneck is offline   Reply With Quote
Old 01-02-2016, 11:58 AM   #3
An old Tradesmen
Join Date: Oct 2008
Location: Somewhere
Posts: 34,413
Rewards Points: 7,816

Windchill has little to no bearing on a heat pump. Except when its in defrost.

Without knowing the actual temp, can't tell much about whether it should have a lot of frost or not.

30F at a 15MPH wind is a windchill of 19F.
When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions.
beenthere is offline   Reply With Quote
Old 01-02-2016, 03:33 PM   #4
Join Date: Nov 2014
Location: Canada
Posts: 3,963
Rewards Points: 7,932

should defrost itself every 60-90 minutes or so or on demand when there's too much. most are timed.
My Backround FIY: I am not in the business of any trade or topic I give advise on. I have some have formal education in HVAC + some DIY experience. Theory is not a substitute for experience.

Last edited by user_12345a; 01-02-2016 at 03:43 PM.
user_12345a is offline   Reply With Quote

Thread Tools
Display Modes

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 Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lennox Heat Pump no_limit_larry HVAC 4 11-05-2012 05:18 PM
dual fuel heat pump - no heat without propane sweetfarm HVAC 3 10-11-2012 08:07 AM
Can I connect Honeywell Vision PRO 8000 (1 Heat/ 1 cool) to a Heat Pump w/aux for heat coils? TimDavis HVAC 12 01-18-2012 07:06 AM
Need help from control guys or heat pump gurus (reversing heat pump defrost cycle) pomelo HVAC 11 03-08-2010 08:13 PM
Comparison and Heat Pump Selection help... ChrisDIY HVAC 7 03-06-2010 08:34 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1