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homeowner question - return vents? Joe S. 10-29-2007
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Posted by Joe S. on October 29, 2007, 8:41 pm
Short story: I own an old 2 story frame house with basement in North
Central WI built before 1930. I am in need of a new furnace and "was"
considering a high efficiency unit with central air (house is 24x34
ft).

Every HVAC contactor who I have received a quote from says that for a
high efficiency furnace w/central air that I realistically need return
vents in every room. I understand the reason why I need return vents,
but I'm not willing to shell out the extra $ to put returns all over
the house since I live in a region where central air is not a
requirement for comfortable living in the summer time (I have large
trees on the South elevation which provide substantial shade to the
house in the summer). I currently have an ancient Lenox Aire Flo
K5-135M (135k BTU input / 108k BTU output) with the air intake on top
of the furnace and a single return opening through the first floor
living room.

The question is whether it is possible to have a high efficiency
furnace without return vents? (the furnace is in the basement). I'm
willing to have a lower efficiency unit without central air as a
trade-off for not having to spend the extra $ to put returns all over
the house. If I go with a lower efficiency unit, what percentage
efficiency might it be, and what would be the best make/model for this
type of scenario/design?

Thanks in advance for any advice,

Joe

Posted by udarrell on October 29, 2007, 9:05 pm
Joe S. wrote:

>Short story: I own an old 2 story frame house with basement in North
>Central WI built before 1930. I am in need of a new furnace and "was"
>considering a high efficiency unit with central air (house is 24x34
>ft).
>
>Every HVAC contactor who I have received a quote from says that for a
>high efficiency furnace w/central air that I realistically need return
>vents in every room. I understand the reason why I need return vents,
>but I'm not willing to shell out the extra $ to put returns all over
>the house since I live in a region where central air is not a
>requirement for comfortable living in the summer time (I have large
>trees on the South elevation which provide substantial shade to the
>house in the summer). I currently have an ancient Lenox Aire Flo
>K5-135M (135k BTU input / 108k BTU output) with the air intake on top
>of the furnace and a single return opening through the first floor
>living room.
>
>The question is whether it is possible to have a high efficiency
>furnace without return vents? (the furnace is in the basement). I'm
>willing to have a lower efficiency unit without central air as a
>trade-off for not having to spend the extra $ to put returns all over
>the house. If I go with a lower efficiency unit, what percentage
>efficiency might it be, and what would be the best make/model for this
>type of scenario/design?
>
>Thanks in advance for any advice, Joe
>
>
I will provide the link, you do the reading.
Talk with more local contractors.

I cannot do much typing.

http://www.udarrell.com/proper_cfm_btuh_duct_sizing_air_conditioning_systems.html
Get window units.
http://www.udarrell.com/airconditioner_current_temperature_btuh_charting.html

- udarrell

--
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There's nothing more unjust or terrorizing than modern warfare & it is totally
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Iran is NO threat to America, Bush is a gigantic threat to America!

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Reality Is Not An Easy Thing To Be Confronted With, or to ACCEPT.


Posted by Joe S. on October 30, 2007, 11:32 pm
wrote:

>Joe S. wrote:
>
>>Short story: I own an old 2 story frame house with basement in North
>>Central WI built before 1930. I am in need of a new furnace and "was"
>>considering a high efficiency unit with central air (house is 24x34
>>ft).
>>
>>Every HVAC contactor who I have received a quote from says that for a
>>high efficiency furnace w/central air that I realistically need return
>>vents in every room. I understand the reason why I need return vents,
>>but I'm not willing to shell out the extra $ to put returns all over
>>the house since I live in a region where central air is not a
>>requirement for comfortable living in the summer time (I have large
>>trees on the South elevation which provide substantial shade to the
>>house in the summer). I currently have an ancient Lenox Aire Flo
>>K5-135M (135k BTU input / 108k BTU output) with the air intake on top
>>of the furnace and a single return opening through the first floor
>>living room.
>>
>>The question is whether it is possible to have a high efficiency
>>furnace without return vents? (the furnace is in the basement). I'm
>>willing to have a lower efficiency unit without central air as a
>>trade-off for not having to spend the extra $ to put returns all over
>>the house. If I go with a lower efficiency unit, what percentage
>>efficiency might it be, and what would be the best make/model for this
>>type of scenario/design?
>>
>>Thanks in advance for any advice, Joe
>>
>>
>I will provide the link, you do the reading.
>Talk with more local contractors.
>
>I cannot do much typing.
>
>http://www.udarrell.com/proper_cfm_btuh_duct_sizing_air_conditioning_systems.html
>Get window units.
>http://www.udarrell.com/airconditioner_current_temperature_btuh_charting.html

Thanks much for the link... I'll check it out (but I'm not an
engineer)

>
> - udarrell

Posted by ftwhd on October 29, 2007, 9:44 pm
wrote:

>Short story: I own an old 2 story frame house with basement in North
>Central WI built before 1930. I am in need of a new furnace and "was"
>considering a high efficiency unit with central air (house is 24x34
>ft).
>
>Every HVAC contactor who I have received a quote from says that for a
>high efficiency furnace w/central air that I realistically need return
>vents in every room. I understand the reason why I need return vents,
>but I'm not willing to shell out the extra $ to put returns all over
>the house since I live in a region where central air is not a
>requirement for comfortable living in the summer time (I have large
>trees on the South elevation which provide substantial shade to the
>house in the summer). I currently have an ancient Lenox Aire Flo
>K5-135M (135k BTU input / 108k BTU output) with the air intake on top
>of the furnace and a single return opening through the first floor
>living room.
>
>The question is whether it is possible to have a high efficiency
>furnace without return vents? (the furnace is in the basement). I'm
>willing to have a lower efficiency unit without central air as a
>trade-off for not having to spend the extra $ to put returns all over
>the house. If I go with a lower efficiency unit, what percentage
>efficiency might it be, and what would be the best make/model for this
>type of scenario/design?
>
>Thanks in advance for any advice,
>
>Joe

You already got your advice from real life contractors. You didnt
like it so you keep searching until you hear what you want to hear.
Get the fuck out of here.

Posted by Joe S. on October 29, 2007, 9:00 pm
It's not a dumb question. I'm trying to find out whether all modern
furnaces ABSOLUTELY REQUIRE returns. Nothing more, nothing less.

If I can get a furnace that does not require returns all over the
house, I will buy one. The original quotes were predicated on central
air. Who are you to tell me to fuck off? It's morons like you who give
usenet a bad name. Go fuck yourself.



>wrote:
>
>>Short story: I own an old 2 story frame house with basement in North
>>Central WI built before 1930. I am in need of a new furnace and "was"
>>considering a high efficiency unit with central air (house is 24x34
>>ft).
>>
>>Every HVAC contactor who I have received a quote from says that for a
>>high efficiency furnace w/central air that I realistically need return
>>vents in every room. I understand the reason why I need return vents,
>>but I'm not willing to shell out the extra $ to put returns all over
>>the house since I live in a region where central air is not a
>>requirement for comfortable living in the summer time (I have large
>>trees on the South elevation which provide substantial shade to the
>>house in the summer). I currently have an ancient Lenox Aire Flo
>>K5-135M (135k BTU input / 108k BTU output) with the air intake on top
>>of the furnace and a single return opening through the first floor
>>living room.
>>
>>The question is whether it is possible to have a high efficiency
>>furnace without return vents? (the furnace is in the basement). I'm
>>willing to have a lower efficiency unit without central air as a
>>trade-off for not having to spend the extra $ to put returns all over
>>the house. If I go with a lower efficiency unit, what percentage
>>efficiency might it be, and what would be the best make/model for this
>>type of scenario/design?
>>
>>Thanks in advance for any advice,
>>
>>Joe
>
>You already got your advice from real life contractors. You didnt
>like it so you keep searching until you hear what you want to hear.
>Get the fuck out of here.

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