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Other stories by John Proctor

  • Sizing Air Conditioners

    To avoid callbacks, many hvac subs size air conditioners using methods that inflate the cooling load. The result is an oversized unit that cools the air, but operates inefficiently and does a poor job of reducing indoor humidity. Three energy engineers explain how to achieve proper cooling without...

  • Getting the Most From Mechanical Cooling

    Most central air-conditioning systems, new and old, fall far short of their rated efficiency. Here’s how to install a system for top performance.