https://www.energyvanguard.com/blog/getting-a-solid-understanding-of-building-science/ Building science knowledge, HVAC design, & fun Mon, 21 Aug 2023 02:46:52 +0000 hourly 1 https://wordpress.org/?v=6.6.2 https://www.energyvanguard.com/blog/getting-a-solid-understanding-of-building-science/#comment-34337 Mon, 21 Aug 2023 02:46:52 +0000 https://www.energyvanguard.com/?p=7710#comment-34337 How long should it take a properly sized central air system to cool a house? Seeing all kinds of claims. Their has to be an optimal efficiency range. Wondering the real world performance that will give you pause to question your tonnages appropriateness. Some site claim a degree an hour others a degree in 18minutes. I lean towards 18. So I’m not racking electric like crazy. I bought a new house 3400sqft. They have a 3ton unit on it. It only drops 2 degrees in 4 to 5 hours when thermostat is set to 73 and it was 80outside. As the night cools it continues to preform poorly. I think it doesn’t have the btu’s for thee house load. They produced a manual j. But I found items I have issue with but am not a professional to know how to interpret all the data. An article on this subject would be great

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