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a question for you hvac guys

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Posted: Thu Mar 19th, 2009 05:23 am

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1^st Post

mcgill72143
Master Appliantologist

Joined:	Mon Oct 6th, 2008
Location:	Searcy, Arkansas USA
Posts:	28
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ok guys...I have a 4 ton central unit that's heating and cooling a 2000 square foot house....im wanting to add a 24'x24'x9' game room onto it that will be heavily insulated ....here is my question....

choice #1...can I just tie into the duct and run two more vents into the room?...or choice #2..... adding a window ac/heat unit in the room and leaving the home vents alone....
can you please give me some pros and cons to think about..?

thanks guys....

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Posted: Thu Mar 19th, 2009 07:31 am

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2^nd Post

RegUS_PatOff
Fellow, Academy of Sublime Masters of Appliantology

Joined:	Sat Sep 24th, 2005
Location:	Milwaukee, Wisconsin USA
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I'm not a HVAC expert, but I'd say choice #1,

but depending on how many inches of / and what type of insulation you have in the current 2000 sq ft house.

posted location Arkansas

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Posted: Thu Mar 19th, 2009 02:27 pm

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3^rd Post

mcgill72143
Master Appliantologist

Joined:	Mon Oct 6th, 2008
Location:	Searcy, Arkansas USA
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someone told me that the added room would be to much for the unit to handle and it would run all the time....

the house and the added room have R30 in the ceiling and R19 in the walls.

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Posted: Thu Mar 19th, 2009 02:29 pm

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4^th Post

RegUS_PatOff
Fellow, Academy of Sublime Masters of Appliantology

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looks good

how long does it run now ?

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Posted: Thu Mar 19th, 2009 02:52 pm

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5^th Post

mcgill72143
Master Appliantologist

Joined:	Mon Oct 6th, 2008
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just depends how hot it gets outside...it doesn't run to often through the day..Im just worried that the main house will get to temp before the added room does ...

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Posted: Thu Mar 19th, 2009 03:13 pm

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6^th Post

RegUS_PatOff
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8 to 10 hours run-time isn't un-common...

air-flow can be adjusted with individual duct dampers ...

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Posted: Thu Mar 19th, 2009 05:35 pm

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7^th Post

applianceman18007260692
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Location:	Mobile, Alabama USA
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I would not bother tieing into the existing ac system. It would put a strain on it. I would instead install a 1 .5 ton heatpump for that room and allow double doors into the rest of the house. I would add a wood heater into that game room too. In case of electrical failure in them bad winter storms like the one this year.

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Posted: Thu Mar 26th, 2009 11:54 am

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8^th Post

telefunkenu47

Joined:	Sun Nov 12th, 2006
Location:	Sebago Lake, Maine, USA
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I agree. Nothing kills like overkill. perhaps a mini split. I know last summer Allbrands had a special on them in the 600 dollar range.

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Posted: Thu Mar 26th, 2009 04:36 pm

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9^th Post

mcgill72143
Master Appliantologist

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Location:	Searcy, Arkansas USA
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Thanks guys for the advice....Me and the wife decided to add a split heat/ac window unit for the room....Where looking at something between a 12,000 and 18,000 btu....

what brand do yall recommend for this type of unit..?

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Posted: Sat Mar 28th, 2009 03:08 am

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10^th Post

applianceman18007260692
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These new models are a turkey shoot. Goodman has a 1.5 heatpump for about a thousand dollars. I would go with it over a japanese model. Goodman last I heard was made in Tenn but even that may stretching it.
http://ingramswaterandair.com/goodman-gsh140181heat-pump-seer-split-heat-pump-p-614.html

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Posted: Wed Apr 1st, 2009 08:23 pm

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Bobice

Joined:	Sun Nov 30th, 2008
Location:	Bay Shore, New York USA
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Fujitsu mini split carried by Johnstone Supply. Call them for price quote. Excellent system. JMO

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