1. What size do I need

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00:09 so here at certified solar heating air
00:11 conditioning we tend to get a lot of
00:13 questions asked when we're in the home
00:15 either talking about maintenance
00:17 IAQ or new equipment whatever the case
00:19 may be one of the questions we get asked
00:21 all the time is what size system do I
00:24 need so it's a really general question
00:27 because every home is different
00:28 sometimes we go to a house and it's got
00:30 let's say a five ton unit installed and
00:33 really it only requires a four time unit
00:35 there are certain measurements and
00:37 calculations that have to be done to
00:38 actually figure out what size fits in
00:40 the home and meets the needs for the
00:42 heating and cooling demands so it's not
00:45 just a exact science of five hundred
00:47 square foot per ton per ton it's not an
00:50 exact science of take out what you've
00:52 got and just put it back in the same
00:54 size sometimes it actually requires some
00:56 knowledge and experience in the industry
00:58 and what needs to go back in