DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > strategic HVAC question




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 02-19-2010, 09:45 AM  
mooseofplenty
Junior Member
 
Join Date: Feb 2010
Posts: 1
Default strategic HVAC question

Hi everyone:

I'm trying to figure out the best way to heat the second floor of my house. Its currently heated by a space heater but I want to get some kind of central heating system set up, but I'm not sure what set up makes the most sense for me.

The first floor of my house has forced air heat from a basement furnace, but the ductwork doesnt extend up to the second floor. I am planning on renting the second floor out to one of my friends. In light of this, all the subcontractors I've talked to have been advising me to just install a second furnace for the second floor. However, this doesnt seem to make a ton of sense to me. In terms of resale value, who is going to want to buy a house with two furnaces? Also, if I decide after a while that I dont want a roommate anymore then I am going to be stuck paying two furnace bills.

Couldnt I just use my existing furnace and extend the ductwork up to the second floor? Is that going to be more expensive than getting a second furnace? I want to get central air and upgrade my existing furnace eventually anyway. Would it make more sense to install a new furnace in the basement + central air, and extend the ductwork up to the second floor?



__________________
mooseofplenty is offline  
 
Reply With Quote Quick reply to this message
Old 02-19-2010, 06:19 PM  
kok328
Supporting Member
HRT_SUPPORTER.png
 
Join Date: Nov 2007
Location: Grand Blanc, MI
Posts: 2,200
Liked 113 Times on 98 Posts
Likes Given: 65

Default

While I see your point, consider the fact that the renter may want it warm while you want it cool and vice-versa.
Yes a second furnace will be more than a ductwork extension.
You also have to think about separate utility meters if you don't want to include utilities in the rental amount.



__________________
kok328 is offline  
 
Reply With Quote Quick reply to this message
Old 02-19-2010, 06:23 PM  
Wuzzat?
Banned
 
Join Date: Jan 2010
Posts: 2,328
Liked 167 Times on 154 Posts
Likes Given: 94

Default

What size is the space heater? This will tell you how many BTU/hr you need to deliver to that area.

HVAC design is more difficult than electronic circuit design, but if you're up to it have your local library borrow Manual D and Manual J through interlibrary loan. The lookup tables solve the equations for you.

How many therms/month do you use [it's on your gas bill]?
What are your HDDs?
Heating & Cooling Degree Days - Free Worldwide Data Calculation
Looks like 1300 for last January.

You also need
http://www.google.com/search?client=safari&rls=en&q=%22outside+design+temperature%22+chicago&ie=UTF-8&oe=UTF-8
The Stack Effect is in your favor for heating, on this one. Cooling is another story.

__________________

Last edited by Wuzzat?; 02-19-2010 at 06:41 PM.
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Old 02-20-2010, 10:27 AM  
travelover
Senior Member
 
Join Date: Aug 2007
Posts: 693
Liked 2 Times on 2 Posts

Default

I lived in a duplex with one furnace and one thermostat. It sucked if the thermostat was on the other side of the wall. I'd second the idea of a second furnace. Around here, lots of houses have two furnaces, especially the larger houses.

__________________
travelover is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

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 On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Noob question: Condo HVAC crawlspace vilmosz HVAC 4 04-12-2010 02:10 PM
do i have an hvac problem?? amf17 HVAC 2 10-12-2009 05:49 AM
HVAC direct vent question Mom2bac HVAC 6 02-24-2008 07:01 PM
Hvac? mike Introductions 1 07-22-2006 05:11 PM
Hvac Diy? newowner HVAC 6 01-13-2006 07:42 AM