Air Conditioning - replacing refig lines

i want to replace my refig. lines but they go under the house, how would i beable to do this. i had my a/c removed and i am doing must of the lines to save money. would i have to go through the attic. please some addvice.

:alarm: STOP WHAT ARE YOU DOING ARE YOU CIRIFIED IF SOME ONE SEE'S YOU DOING THAT OR GETS IT ON TAPE YOU ARE IN MAGER TROUBLE YOUR LOOKING AT $10,000 OR MORE IN FINES + JAIL TIME GET A PRO SOMTHINGS YOU CAN'T SAVE MONEY ON BY DOING IT YOUR SELF EVERY ONE ELES HERE WILL SAY THE SAME THING :alarm:

everything has been removed outside and inside unit he wanted 800 to run new lines i want to run the lines myself with no freon. then when they come back to hook it all up.

well maby you can get away with it i know they don't want you to because of freon look at others topics about freon and changing systems and see if you are alowelled i don't have time to look at every one

Lost Why do you need new lines ??? Wrong size?
If crawl way Id put new lines there and not in attic. But you can put them in attic. You can put just the new lines in ok. But will the AC guy hook them up to his units . He has to cause he is EPA to work with the freon and you are not. Make sure they are the right size and have the insulation on the big one.

ED;)

because i went from a 2 1/2 ton to a 4 ton. i figured i need new refig. lines. so the best way is to go throught the old way under the house. if i do it under the house does the pvc pipe go half way up.

You don't tell us the whole story but I will make an assumption that you bought your own unit and a contractor is willing to hook up your system for 800.00.
Is this close?

The problem with doing this work yourself is that the powers to be decided that to protect the environment they would require all people working on these systems be qualified to do so.
This means that you must have licensed trades people do this work for you.
Some people are not willing to play by the rules and accept the extra cost to hire qualified people.
There is more to hooking up an a/c unit than the physical act of pulling tubing.
Your tradesperson must have a vacuum pump, refrigerant reclaimer, electronic leak checker plus a truck full of supplies when they show up at your house.
To expect a tradesman with an investment in these tools, supplies and his/her training to come to your house and make your system operational for an hour of labor is really too much.

Besides, what happened to the refrigerant in your old system before I assume you removed it?

That's an awful large jump in tonnage on A/C! did you double sized your home?


It is best to leave ALL of the job with the Pro.