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The Water Cooler
General Discussion
HVAC problem (undersized unit)
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<blockquote data-quote="_CY_" data-source="post: 2776292" data-attributes="member: 7629"><p>the fastest/cheapest solution to boost your main HVAC is a big honking window unit, Sam's has decent prices. </p><p></p><p>there are many factors that goes into sizing a HVAC unit .. a pro will do a Manual J calculation ... <a href="http://www.loadcalc.net/" target="_blank">http://www.loadcalc.net/</a></p><p>you just had an HVAC guy out .. either you trust him or not .. </p><p></p><p>easiest way to confirm sizing is to ask your neighbors with low bills and same size house and quality of build. there will be a plate on outside condenser with brand/model/size info. </p><p></p><p> you need to ask HVAC guy that was just out what the subcooling and superheat reading were .. also need to know if your unit uses a piston or TXV? are ducts properly sized? </p><p></p><p>have you checked if outside condenser has been cleaned? is the inside A coils clean? inside filters clean? hows the airflow? </p><p>your HVAC guy should have checked all of above ..</p></blockquote><p></p>
[QUOTE="_CY_, post: 2776292, member: 7629"] the fastest/cheapest solution to boost your main HVAC is a big honking window unit, Sam's has decent prices. there are many factors that goes into sizing a HVAC unit .. a pro will do a Manual J calculation ... [url]http://www.loadcalc.net/[/url] you just had an HVAC guy out .. either you trust him or not .. easiest way to confirm sizing is to ask your neighbors with low bills and same size house and quality of build. there will be a plate on outside condenser with brand/model/size info. you need to ask HVAC guy that was just out what the subcooling and superheat reading were .. also need to know if your unit uses a piston or TXV? are ducts properly sized? have you checked if outside condenser has been cleaned? is the inside A coils clean? inside filters clean? hows the airflow? your HVAC guy should have checked all of above .. [/QUOTE]
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