Why Do HVAC Systems Have BTU Ratings?

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HVAC unit in Northridge, CA

If you’ve ever gone out to purchase an air conditioner, you’ve likely seen their cooling capacity expressed in BTUs. If you’ve ever wondered what that means, you’re not alone. It’s short for British thermal units, which is a standardized measure of heat energy. Here’s how BTU ratings on AC systems work and why you should…

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