Joe F

Nevermind. Deleting post as I was thoroughly confused on A/C flow and don't want to confuse anyone else!

tsmooth

it gets it from the high side... the high pressure goes through an expansion valve after going through the condenser, before it goes into the evaporator. this expansion of gas from high pressure to low pressure creates the cold temperature. (i learned this watching a video of "Eric the car guy" a few days ago on YouTube) he used a can of compressed air that you use to dust off your computer to illustrate. he discharged the air for a while and said the bottle got cold, because air was going from a high pressure state to a low pressure state through a small hole. which any of us who have use these cans of compressed air can verify it does get cold.

Joe F

Thanks! I think I get it now. In this pic, you would be insulating the "low pressure vapor" line on the bottom left, which contains what has already passed through the evaporator, therefore insulating it just keeps it a bit cooler heading back to the compressor. Correct?

tsmooth

yeah... and the debate is you are insulating something that is going to be heated up again anyways. so in theory insulating it shouldn't cause improvement... however... for some reason i have seen improvement. and its debatable weather or not that improvement is at a cost of potential damage or not.

Joe F

Puzzling for sure. If you look at that pic, it appears the compressor converts the cold low pressure vapor to hot high pressure vapor. My totally clueless question in looking at this would be...if you are converting it from cold to hot, doesn't making the cold even colder result in the compressor having to work harder to convert it? Ha ha! I give up. Maybe I'll just go back to the original plan to just clean my evaporator like you and go for a drive.

tsmooth

i think at this point the best thing for my situation would be to save up and get my windows tinted with good quality ceramic window tint. so far that means 3m, llumar and hupertek. my quote for my truck for 3m was 325 for the windows and 325 for the 3m full windshield film, and 360 for llumar with 150 for llumar full windshield film. some reports have been up to a 30 degree temperature difference in standing interior heat. so if you get in your truck and its 130 -140 degrees from radiant outside heat the inside heat with ceramics on your windows will be 100-110. this means less work to cool off your vehicle at first and less work while driving cause your not getting any radiant heat inside from outside while your driving, said to work the other way with cold too. your heater doesnt have to work as hard but lets be honest unless the heater is out ive never wished a heater was more efiecient. either way... thats a steep price for tint... and then the wifes gonna want it on her car for the kids... damn. were talking almost a grand for tint. gonna have to sell a car to pay for it.

tsmooth

this is the debate on weather or not it is worth it. while you may be seeing an improvement in performance at the vents you could be causing your compressor to work harder by insulating your line. some say it doesnt hurt the compressor, the colder gas coming in helps the compressor not overheat (and able to be more eficient) and that the only way you can hurt a compressor is if you were retuning a "cold slug" (gas that has turned into a cold liquid) to the compressor which most folks seem to think isnt possible just by insulating the lines to the compressor. but others debate that any more work your compressor has to do results in wear or shorter life. only actual results will tell. but to me with my results and where my compressor is at, at the bottom of the engine in a hot environment it seems to me the greater efficiency is coming from my compressor actually being cooled by the colder gas being delivered to it. but it very well could be me wanting this to be the case than it actually being the case.

Mds50

Well I ordered the Dwd2 kit today. I read reviews of the kits designed for use through the drain hole and some reported the can empties all at once and in the end their fan no longer worked. Since the dwd2 kit goes between the fan and the evaporator and you use it with the fan on there should be less chance of ruining the fan. I am not opposed to cutting a hole and spraying from the back either. I bought my 2012 new and I know my AC is capable of being better than it is right now. I will post my results.

tsmooth

looking forward to others posting results other than me. Looking forward to having a coroboration of experiences

Joe F

Thanks and definitely do post your results. I was going to try cutting the hole this past weekend, but obviously I need some kind of industrial grade utility knife as all I managed to do was break my blade and barely made a scratch.

tsmooth, any recommendations for technique on this? On the demo video, he starts after the hole is cut.