U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Real Estate
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
 
Old 06-21-2012, 02:12 PM
 
108 posts, read 324,221 times
Reputation: 92

Advertisements

In general how much of a difference is there in the heating and cooling cost between a

1,200 square foot home

and a

1,900 square foot home.

I understand that the structure and insulation does make a difference.

I am trying to find out if there is really a big difference in heating and cooling between a 1,200 square foot home and a 1,900 square foot home.
Reply With Quote Quick reply to this message

 
Old 06-21-2012, 02:28 PM
 
Location: The Triad (NC)
26,847 posts, read 57,851,863 times
Reputation: 29246
Quote:
Originally Posted by Demps View Post
In general how much...
I am trying to find out if there is really a big difference...
The assumption is that if the 1200sf space requires X
the 1900SF space will require about 58% more.
All (other) things being equal... that's pretty close.
Reply With Quote Quick reply to this message
 
Old 06-22-2012, 08:26 AM
 
609 posts, read 1,824,784 times
Reputation: 420
depends really with dual zone and all, it may not be significant. If the additional sqft is on the top level then you could keep that zone to be less hot/cold during times when not required.
Reply With Quote Quick reply to this message
 
Old 06-22-2012, 11:33 AM
Status: "October is the eighth month" (set 19 days ago)
 
Location: Just south of Denver since 1989
10,676 posts, read 28,491,129 times
Reputation: 6842
usage plays a big part of energy costs, and every home is different.
Reply With Quote Quick reply to this message
 
Old 06-22-2012, 01:54 PM
 
Location: East Side Milwaukee
710 posts, read 1,402,320 times
Reputation: 446
I would think it would depend on if you're comparing apples to apples. Are these both detached single family homes? Also, do they have the same number of levels?

If one house is attached & the other isn't... that will make a difference. Also, I would think a 2 story house would have lower costs than a single story, there's less area for the heat/cold to escape.
Reply With Quote Quick reply to this message
 
Old 06-22-2012, 01:58 PM
Status: "October is the eighth month" (set 19 days ago)
 
Location: Just south of Denver since 1989
10,676 posts, read 28,491,129 times
Reputation: 6842
Default too many differentials

What if one house had no window coverings or more shade trees or a family of five or a sick person that needed a stable indoor environment?
Reply With Quote Quick reply to this message
 
Old 06-22-2012, 03:41 PM
 
6 posts, read 10,919 times
Reputation: 17
Thumbs down Way way way way way way way ...

....way way way (well you get it) OFF BASE.

There is NO SUCH THING as a straightline model of converting two dimensional sq ft into THREE DIMENSIONAL space for comparisons of HVAC costs. You do not heat/cool FLOOR AREA you heat/cool AIR which fills the structure in CUBIC FEET and the calculations for how much more air there is to heat/cool are only a small part of the important questions.

Even the two homes have similar ceiling heights and room layout the correlation to how much air each has would be highly dependant on the configuration of where the air flow is directed / contained. HVAC system installers that try to "guesstimate" what the total air volume in the home are are just about sure to guess wrong and anyone building a new home or having any HVAC replaced / upgraded should demand a computerized calculation of the required system capacity. That system capacity will not, however, explain the details of what the ongoing operational costs will be.

Far more important is the relative status of the INSULATION which keeps the space at a stable temperature and the amount of weather sealing that will prevent of heated / cooled spaces from leaking air to/from the environment.

Second in importance is the relative efficiency of the HVAC equipment itself (both active and passive), its state of tune / maintenance and the kind of fuel used. Assuming "all things equal" in this regard is a BIG mistake as even equipment from the SAME manufacturer, on the same fuel source, of the same initial efficiency rating can be be far different in operation because of poor setup / maintenance. The kinds of things that even good home inspectors rarely if even check (like ductwork that leaks) can actually be responsible for MORE cost differences than the stuff that is easy to check (like improperly adjusted burner..).

Fact is I have seen MANY homeowners upgrade to larger homes of the same general quality / price class see their energy costs signficantly DECREASE simply because the bigger home was built with more awareness of the value of insulation and weather sealing. You really cannot judge how much of your money is literally going to waste because of "minimal code" type insulation and lack of advanced weathersealing techniques. Those techniques can be as SIMPLE as using TAPE on barrier layers instead of just overlapping seams!



Quote:
Originally Posted by MrRational View Post
The assumption is that if the 1200sf space requires X
the 1900SF space will require about 58% more.
All (other) things being equal... that's pretty close.
Reply With Quote Quick reply to this message
 
Old 06-22-2012, 04:14 PM
 
Location: The Triad (NC)
26,847 posts, read 57,851,863 times
Reputation: 29246
What part of "All (other) things being equal" ...is so difficult for you people to understand?
Reply With Quote Quick reply to this message
 
Old 06-25-2012, 09:10 AM
 
609 posts, read 1,824,784 times
Reputation: 420
you did provide a theoretical answer to a theoretical question. Very rarely would you have two home that have "all other things" that are equal .
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.


Reply
Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply
Message:


Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Real Estate
Similar Threads
Follow City-Data.com founder on our Forum or

All times are GMT -6.

2005-2018, Advameg, Inc.

City-Data.com - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 - Top