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The Water Cooler
General Discussion
HVAC problem (undersized unit)
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<blockquote data-quote="NikatKimber" data-source="post: 2776552" data-attributes="member: 423"><p>Absolutely correct. By saying undersizing can be acceptable or good, I mean a slight difference. Say your house calculates out to need a 3.25ton unit; well, they are typically sold in .5ton increments, so you would be better off with the <em>slightly</em> undersized unit vs the oversized unit. </p><p></p><p>However, that is also based on older units that did not have variable speed fans. If your system can run at a lower speed when maximum capacity is not needed, then slightly oversizing would not be a negative attribute anymore.</p><p></p><p></p><p></p><p>LOL!!!!</p><p></p><p>So we now see that the only valuable advice you have is "call a pro"</p><p></p><p>Delta-T is the difference in temperature. Measure temp going in (at intake) and exit (exhaust (cold air) vent closest to blower unit).</p><p></p><p>The specs are printed on the labels shown earlier in the thread.</p></blockquote><p></p>
[QUOTE="NikatKimber, post: 2776552, member: 423"] Absolutely correct. By saying undersizing can be acceptable or good, I mean a slight difference. Say your house calculates out to need a 3.25ton unit; well, they are typically sold in .5ton increments, so you would be better off with the [I]slightly[/I] undersized unit vs the oversized unit. However, that is also based on older units that did not have variable speed fans. If your system can run at a lower speed when maximum capacity is not needed, then slightly oversizing would not be a negative attribute anymore. LOL!!!! So we now see that the only valuable advice you have is "call a pro" Delta-T is the difference in temperature. Measure temp going in (at intake) and exit (exhaust (cold air) vent closest to blower unit). The specs are printed on the labels shown earlier in the thread. [/QUOTE]
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HVAC problem (undersized unit)
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