HVAC Chart 3 Pack, R-22 Superheat Subcooling Calculator, R-410a Superheat Subcooling Calculator and Duct Calculator

Price: $18.99
Product prices and availability are accurate as of 2021-04-07 12:07:42 UTC and are subject to change. Any price and availability information displayed on http://www.amazon.com/ at the time of purchase will apply to the purchase of this product.
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Product Features

3 Slide charts for less that some sellers charge for 1! #1 Training tools used by College, Universities and Training Centers Field proven by installers and technicians for over 30 years! No abridged information or rule of thumb calculations. Duct calculator has diagrams for properly calculating total equivalent length and pressure drop correction factors. A must have for high efficiency systems.

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