This is a very useful tool that takes the guess work out of charging cooling systems. One side of this tool is a slide chart used for calculating superheat for a NON-TXV system and the other side is a slide chart used to calculate subcooling on a TXV system. The photo shows both sides of the tool. This tool is made of thick durable water resistant paper stock with corner rivets. It fits easily in your shirt pocket at approximately 6.25 inches high by 3.25 inches wide.
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1 of 1 people found the following review helpful:
5.0 out of 5 stars
Good Charging Slide Rule,
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This review is from: R22 Superheat Subcooling Calculator Charging Chart (Cards)
I enjoy good quality tools, and this slide rule is one of them. Well worth the price. I use it in my business all the time.
4.0 out of 5 stars
Handy tool to have.,
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This review is from: R22 Superheat Subcooling Calculator Charging Chart (Cards)
If you don't want to spend a ton getting another electronic tool, this is super handy to have in the bag. Sometimes I don't have all my tools with me, so this is a quick and easy way to whip the manifold gauges on & verify whether you need to go get all the other tools. It's easy to read and understand only if you're familiar with HVAC. If not, you don't need this anyway, because it won't do you as much good as getting a technician out to help you.
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