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

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-29-2009, 07:24 AM   #1
Newbie
 
Join Date: Apr 2009
Posts: 1
Rewards Points: 0
Share |
Question

Replacing inside air control unit - have to replace outside as well?


Hey guys. I have a Crane unit, and the air control unit (the thing that sits up in the attic) needs to be replaced. This will be done under a home owner's warranty (we're the second owners of the house). The unit is 12 years old.

The guy who came to look at the unit also recommended that when the air controller is replaced, the outside unit also should be replaced. He stated that if you don't do this, they won't be matched/compatible, and it will result in significant cooling inefficiency leading to higher bills. He claimed that it would cost about $2000 ($5500 for a Trane unit) to do this, but I'm not sure if this includes labor charges. This latter option would not be covered by the home owner's warranty.

Is what he stated true? What would the relative inefficiency be if I didn't match the units. 60%? 90%?

yalej is offline   Reply With Quote
Old 04-29-2009, 09:29 AM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 9,423
Rewards Points: 70
Default

Replacing inside air control unit - have to replace outside as well?


It can be made to work with the existing outdoor unit but not perfectly. The new airhandler probably will have a higher SEER evaporator coil than the lower SEER outdoor unit. You may lose 5% efficiency and it may have unusual operating pressures which may shorten the life of the outdoor unit compressor in extreme cases. Sounds like he is trying to scare you and may be a bit shady. I would get 2 more complete quotes from well established reputable companies.

yuri is online now   Reply With Quote
Old 04-29-2009, 11:46 AM   #3
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,115
Rewards Points: 130
Default

Replacing inside air control unit - have to replace outside as well?


There may or may no be a loss of efficiency.

The new coil should allow your older outdoor unit to work easier.
May even increase your systems capacity some.

If it was the other way around, you would definitely lose capacity and efficiency.
beenthere is online now   Reply With Quote
Reply


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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Replace or keep baseboard moldings when replacing doors? J187 Building & Construction 3 09-15-2008 01:36 PM
Ouside Unit on. Inside Fan off mycuss HVAC 5 08-04-2008 08:01 PM
Temporarily Replacing Double Glazing Unit kitefan Building & Construction 6 10-04-2005 01:05 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.