Mastering Superheat: The Trick to Charging an HVAC Unit

[@muhammadaslam3332]

I am already professional in HVAC, I really appreciate for suchlike informative and fruitful explanation for all those whose are in this field. Welldone. Keep continue likewise.

[@michaelhartsgrove3059]

This is a great video, newly promoted HVAC tech, worked as welder fabricator/ industrial maintenance mechanic. Boss said wanna be the new HVAC tech?…. Lol 😂… only this year installed my first system on the wife’s car successfully… guess I’m qualified. Currently studying for the EPA 608 exam. Thanks guys very helpful.

[@MechanicalPros]

Congratulations! Glad we could help :)

[@garypoplin4599]

Hope you had your 609 before that!

[@gotchaplumber]

Could you do video of taking wet bulb measurements with tool?

[@riadhch5643]

Thank you for sharing that much of very beneficial information accept my respects

[@nanoglz]

Great information very well explained 👏

[@10speed4]

That made since to me and I know very little about super heat.

[@shannonedwards1872]

What's so funny about a wet bulb.. I feel like I missed something... ☺ Thanks, guys! Love to see you both having fun doing these videos.

[@gotchaplumber]

Thank you!

[@harbbains5718]

Excellent video… great job guys!!!

[@corruptedbrain6]

What I learned from this video is that alot of installs do not install the piston so now it makes sense why I have been seeing super heat 1 degree and subcool 2 degrees

[@spydermaaaan]

Very clear Thank you!!

[@andys5203]

Great video. Do you have to shut the condenser off to check the wet bulb? Thks

[@eduardocastroisaac1630]

Thanks for this kindly video explanation. Saludos desde Mérida Yucatán México

[@MechanicalPros]

Gracias, mis amigos de Yucatán, México. Su apoyo es muy apreciado.

[@JacekWrona-s1v]

Great informational video. I hope you can help me. I have 14 seer evaporator coil and 15 seer Carrier condenser (no matching system .I know that) There was original piston (0.088) in the unit ,but after the Carrier condenser was install, piston was replaced by TXV. Unfortunately ,randomly compressor is overheating , so I planning to put the piston back . And new piston is 0.090. What's your take on that?

[@DG-Chiefs-fan]

I’m very new at HVAC and this helps me understand better. Great video thanks from all of the newer people getting into the trade 👍🏽

[@robavis4906]

thank you guys. Ive been looking to learn more about this type of stuff.

[@MechanicalPros]

More to come! Thank you for the support.

[@brianmcdermott2430]

Great info. Thank you , Craig

[@davidmclain7756]

Great video. Very detailed. I do have a question on the indoor wet bulb temp reading. Is it correct to take the wet bulb temp inside the home at the return grill if the evap coil is in the attic? Or do you need to take the wet bulb reading up in the attic inside the unit case before the return air hits the evap coil? Thanks

[@Lemonades1321]

Wow awesome explanation. Thank you.

[@daviderquitt1642]

My data sheet is located inside unit so should I go buy it ..410a system

[@chadgriffith5819]

So my 4 ton package unit has the piston. It’s running my shop. I bought it used. I’m getting a 15-20 delta T but pressures are 155/470. Ambient is 95 and wet bulb about 77 using wet rag and prob. Suction temp is 80. So I think target is 30 and actual super heat is 30. Im I good or missing something. Suction stops sweating around noon.

[@mr.18s73]

I needed this information 😅

[@MechanicalPros]

Nice!

[@j.t.johnston3048]

If there is no piston installed at all, there is no expansion device and thus no refrigeration will occur. Inhave never seen a system with no piston installed. The indoor unit will usually already have something installed.

[@kylebell7879]

Is that temp chart valid for r12?

[@Saabjock]

Can an R22 system with an original piston-type expander be converted to TXV when a new evaporator is installed?

[@realSamAndrew]

Yes. You just need to make sure you have the right TXV that's made for your air handler and made to work with R22.

[@thembones12]

I want to see the real/actual pressure & temperature that is the system should be running. Take some readings and measure the superheat!

[@2bnax]

THE CLARITY OF THE EXAMPLE SUFFICES. YOUR UNIT PRESSURES WILL LIKELY NOT BE THE SAME AS HIS ANYWAY. APPLY THE PRINCIPLES - THAT'S WHAT'S IMPORTANT. THE REFERENCE NUMBERS USED WERE CORROLATING TEMP. / PRESS. AS THEY ARE ON THE CHART. THEY HAVE SHOWN YOU HOW - DON'T BE AFRAID THANKS FELLOWS!!!

[@dachee]

If I am not wrong, not all expansion valves are located at the evaporator.

[@realSamAndrew]

Yes they are, unless you have a heat pump which has them at both the condenser and evaporator, or you have a mini split system that can locate at various places.

[@lwh7301]

Seems like every video like this glosses over the most important point of figuring when to add/subtract refrigerant in a few seconds, and then takes a minute talking about cleaning the filter.