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 10-10-2011, 04:32 PM   #1
Member
 
Join Date: Jul 2005
Posts: 137
Rewards Points: 75
Default

mid efficiency furnace..should I upgrade


Just bought a house. It's approx 10-12 years old. It has a mid efficient furnace. Is it worth looking into upgrading it to a high efficient one? Personally I think we are ok. I am just going to make sure the ducts are sealed around the unit itself. I feel the $$ would/could be spent better elsewhere.

thoughts?

fjacky is offline   Reply With Quote
Old 10-10-2011, 04:39 PM   #2
Member
 
Houston204's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 592
Rewards Points: 510
Default

mid efficiency furnace..should I upgrade


Your money might be better spent on upgrading windows and insulation.

Houston204 is offline   Reply With Quote
The Following User Says Thank You to Houston204 For This Useful Post:
gregzoll (10-10-2011)
Old 10-10-2011, 05:22 PM   #3
Member
 
raylo32's Avatar
 
Join Date: Nov 2006
Location: Maryland (DC 'burbs)
Posts: 1,047
Rewards Points: 506
Default

mid efficiency furnace..should I upgrade


From a strict cost perspective maybe stay with what you have. But.... if you plan to stay there for awhile I think it is a good idea to upgrade to a new high eff unit. In other words if you think you will be there long enough that the old furnace would need significant repairs or replaced, then do it now and the new furnace savings will begin accruing now. Also a good idea to get a multi-stage or modulating furnace that will enhance your comfort. Anyway, I just did this myself by upgrading a 15 year old mid-eff that still worked (but for how much longer?) to a 2-stage high eff variable speed unit. I was even able to sell the old furnace since the parts are still in high demand out there.
raylo32 is offline   Reply With Quote
Old 10-10-2011, 06:25 PM   #4
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Rewards Points: 1,000
Default

mid efficiency furnace..should I upgrade


Also depends on where you live. A furnace in a warm climate that runs 500 hours a year wouldn't be worth replacing while one that runs 2500 hours a year in a cold climate would be.
Marty S. is offline   Reply With Quote
Old 10-10-2011, 07:05 PM   #5
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 14,319
Rewards Points: 2,300
Default

mid efficiency furnace..should I upgrade


Quote:
Originally Posted by fjacky View Post
Just bought a house. It's approx 10-12 years old. It has a mid efficient furnace. Is it worth looking into upgrading it to a high efficient one? Personally I think we are ok. I am just going to make sure the ducts are sealed around the unit itself. I feel the $$ would/could be spent better elsewhere.

thoughts?
How are you determining that it is mid efficiency? Do you have records of the temp it was set at for both heating and cooling? Do you have records of the number of days that the temp was set at, including heating degree days? How do you know that the previous home owners did not jack around with the thermostat every time they felt too warm or too cold? Do you have at least five years of utility bills to show what the previous homeowners were spending to heat, cool, and leave the lights on in every room, along with running the dryer and washer all the time?

There is no real way to determine efficiency of the unit, until you use it for a couple of heating & cooling seasons. This past Summer was brutal on people for air conditioning. Get the windows updated if they are single pane, get the doors fixed to not let air out. Run the numbers through http://hes.lbl.gov/consumer/ Use the detail part, when you get to describing the home info.
__________________
Ren: Now listen, Cadet. I've got a job for you. See this button? Ren: Don't touch it! It's the History Eraser button, you fool! Stimpy: So what'll happen? Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?
gregzoll is offline   Reply With Quote
Old 10-10-2011, 07:47 PM   #6
Member
 
Join Date: Dec 2009
Posts: 611
Rewards Points: 500
Default

mid efficiency furnace..should I upgrade


Quote:
Originally Posted by gregzoll View Post
How are you determining that it is mid efficiency? Do you have records of the temp it was set at for both heating and cooling? Do you have records of the number of days that the temp was set at, including heating degree days? How do you know that the previous home owners did not jack around with the thermostat every time they felt too warm or too cold? Do you have at least five years of utility bills to show what the previous homeowners were spending to heat, cool, and leave the lights on in every room, along with running the dryer and washer all the time?

There is no real way to determine efficiency of the unit, until you use it for a couple of heating & cooling seasons. This past Summer was brutal on people for air conditioning. Get the windows updated if they are single pane, get the doors fixed to not let air out. Run the numbers through http://hes.lbl.gov/consumer/ Use the detail part, when you get to describing the home info.
Greg, an 80% furnace is also referred to as 'mid-efficient'. An easy way to identify them is to look at the vent: it will be metal b-vent. A 90%+ furnace, also called a condensing furnace, is referred to as high-efficient, also easily identified by the venting, which will be plastic.

Last edited by hvac benny; 10-10-2011 at 07:48 PM. Reason: .
hvac benny is online now   Reply With Quote
Old 10-11-2011, 01:19 AM   #7
REP
Member
 
Join Date: Jul 2011
Posts: 615
Rewards Points: 500
Default

mid efficiency furnace..should I upgrade


Something to chew on.
If you could find a 150% furnace and it was too big for the house then youi would be losing money every month.
The number one thing anybody can do to control heating (asnd cooling) costs is to make sure it is the absolute right sizeb for your house.
To know that you must have a manuel "J" and a manuel "D" done for your house.Even if somebody charged you to do that,it would be worth it.
After that is done then you look fror more cost savings with things like hi-effiency ,two stage,varible speed etc.To spend the big dollars for that stuff and get the wrong size is just plain stupid.

REP is offline   Reply With Quote
The Following User Says Thank You to REP For This Useful Post:
gregzoll (10-11-2011)
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
Furnace is in attic, I want to move it because of efficiency issues... SimonSezz HVAC 1 01-22-2011 06:23 PM
Fumes from High Efficiency Gas Furnace Sandra L Appliances 2 11-11-2010 09:28 PM
Ruud furnace issue on upgrade board and flame sensor rubberman HVAC 22 01-15-2010 11:34 PM
Loud, low toned hum from high efficiency furnace. Ryan C HVAC 5 10-16-2009 05:38 AM
venting a high efficiency furnace through the roof (how high) allAboutDIY HVAC 11 10-21-2008 12:48 PM




Top of Page | View New Posts

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