HVAC Chart 3 Pack - R-22 & R-410a Superheat/Subcooling Calculators and Duct Calculator

HVAC Chart 3 Pack - R-22 & R-410a Superheat/Subcooling Calculators and Duct Calculator

• 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.

Lets face it, 1 slide chart can not do it all. Don't be fooled by an abridged chart with missing information, tidbits of random formulas and rule of thumb calculations all crammed on to one chart. The HVAC 3-Pack comes with 3 charts. One for sizing ductwork, one for calculating superheat/subcooling on R-22 systems and one for calculating superheat/subcooling on R-410a systems. Duct calculator has diagrams for properly calculating total equivalent length and pressure drop correction factors. A must have for high efficiency systems. Put one chart in your install bag and the others in your service bag.