What a Manual J calculation actually does
Oversizing is the most common and most expensive mistake in residential HVAC. Here is the calculation that prevents it.
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Five signs your ductwork is costing you
Rooms that never keep up, dust that returns in days, and a system that runs constantly all point the same…
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Heat pumps through an Illinois winter
Cold-climate units work here. Whether they save you money depends on your tariff, your balance point and your backup.
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MERV ratings without the marketing
A higher number is not automatically better. What matters is what your fan can pull through, and whether the slot…
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