RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Monaco Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 11-23-2012, 07:21 PM   #15
Senior Member
 
Denali's Avatar
 
Join Date: Oct 2003
Posts: 244
Quote:
Originally Posted by itdave View Post
I would think that the heat pump effectiveness would be rated the same as AC which is output air temp is 20 degrees less than input are temp. So in heat pump mode I guess it would be output temp is 20 degrees more than input air temp.
That's right.

Remember, the "input air temp" is the temperature of the room being heated, not the outside temperature. The heat pump (in either heating or cooling mode) does not draw outside air into the house.
__________________
Dave Rudisill
2004 Beaver Monterey - Fulltiming since August 2002
Denali is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 11-26-2012, 10:11 PM   #16
Senior Member
 
Join Date: Jun 2010
Location: Anacortes, WA (Stick & Brick)
Posts: 2,643
Larry:

I can't pass on experience with RV heat pump systems, but when we were looking to move from our big house in Everett to something smaller, many of the places we looked at had heat pumps.

The main thing I noticed was that the output air was warm (maybe 15 degrees above the room air temp), rather than hot (which we were used to with a conventional furnace). I think the reaction tme needed to heat the environment to the temp you've asked for is a lot longer with a heat pump, but once it's close to the temp, the heat pump is a lot more efficient.

In the end we decided not to go for a house with a heat pump, mainly because Eileen didn't like what she sensed as "cold drafts", even though they were a few degrees warmer than the room ambient.
__________________
Frank Damp -Anacortes, WA,(DW- Eileen)
ex-pat Brits (1968) and ex-RVers.
frankdamp is offline   Reply With Quote
Old 11-28-2012, 03:21 AM   #17
Senior Member
 
SteveSkinner's Avatar
 
Monaco Owners Club
Join Date: Jun 2011
Location: Montana
Posts: 811
Quote:
Originally Posted by Denali View Post
That's right.

Remember, the "input air temp" is the temperature of the room being heated, not the outside temperature. The heat pump (in either heating or cooling mode) does not draw outside air into the house.
Not quite true
As above no air actually travels thru the unit but

The heat pump attempts to draw heat from the air outside and transfer it thru the heat exchanger to inside the unit. It becomes more difficult to extract heat as the temp drops and when it gets to some place above freezing it just gives up.
So turning on a heat pump in near freezing conditions will just chew electricity.
You will not get 20deg temp difference across the aircon as you would in cool mode.
Put it another way
When it's hot outside and you are in cool mode the unit is extracting heat from a hot motorhome and transferring thru the heat exchanger to the outside. There is generally a lot of heat available. In reverse there is very little heat available at 40f
There is no such thing as cold just a lack of heat
Would someone like to correct my analogy
__________________
2005 Monaco Signature Castle 1V
2013 Subaru Outback Toad
SteveSkinner is offline   Reply With Quote
Old 11-28-2012, 08:24 AM   #18
Senior Member
 
Denali's Avatar
 
Join Date: Oct 2003
Posts: 244
Quote:
Originally Posted by SteveSkinner View Post
Not quite true
As above no air actually travels thru the unit but

The heat pump attempts to draw heat from the air outside and transfer it thru the heat exchanger to inside the unit. It becomes more difficult to extract heat as the temp drops and when it gets to some place above freezing it just gives up.
So turning on a heat pump in near freezing conditions will just chew electricity.
You will not get 20deg temp difference across the aircon as you would in cool mode....
That why I said "The colder it is outside, the less warm the output of the heat pump".
__________________
Dave Rudisill
2004 Beaver Monterey - Fulltiming since August 2002
Denali is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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



All times are GMT -6. The time now is 06:18 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.