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The generally accepted maximum is 300 ft per minute face velocity for filter grills.

That would mean 1 square foot per 300 cfm moved or 1-2/3 square feet for 500 cfm. That would be equal to 240...

I read all 8 pages of this thread. My advice, first and foremost never-ever go back to work with this guy. One traffic stop could ruin your life, do not take the chance of that happening. Second go...

I was laid off as well and went to Lanier Tech.(thanks to everyone that plays the lottery) I am now employed. Welcome to the site. I have learned lots from here.

Had one this week. Customer says "it's just not cooling very well, and my husband just changed the filter". Get up to the attic to find the louvered door on the bottom and the solid door on the top...

If you go with a submersible pump there will be a motor starter in a small control box at the top of the well, they run about ~$50-$75. Always keep a spare on on hand. When you use your spare restock...

Lots of long days. This is the first time I have even turned on the computer since I started.

I should be in my own van by the end of next week. I will be the PM tech, drive the oldest van, and...

Get in a tech school HVAC program if you can. Learn what you can from books and from here.

Here is a "cheat sheet" once you learn the theory this is a great help in troubleshooting.

cheat sheet

Welcome to the site and good luck with school. I just finished tech school but luckily my tuition and books where covered by the "Hope Grant" (Lottery money). A big thank you to everyone that plays...

Get your post count up and apply for Professional Membership. You will get more help that way.
Welcome and I hope we can be of assistance.

I know "wiki" is not "real" but it was a quicky for the 3 post OP.:grin2:

I did read my textbook and got an A in motors. Just didn't feel like typing a research paper.
:cheers:

Schooling is always a good idea. I know I could not have even stuck my foot in the door without some legitimate education. Who is going to hire a fifty-something y.o. surveyor to work on ACs.
If you...

wikipedia AC_motor

I start my first (paid) job in the HVAC field next Thursday (6-16) I will be done with tech school on Wednesday as soon as I am done with that last final (math). I will be working for 4 Seasons...

^^ what he said!

I can only imagine any kind of coating being worse for heat transfer.

I was riding with the service manager at my new place of employment yesterday. Lennox condenser with the service valve on the liquid line side. I hooked up the gauges and cracked the service valve. I...

Not a seasoned tech (yet) but here is one.
Always check 240v as two 120v. Leg to ground leg to ground not just leg to leg.

While I was doing an externship we saw a disconnect breaker with one leg...

I may have over simplified mine but I said, "To obtain an entry level service technician's position". I figure you can't get anywhere unless you can get started.

Here is a link to the union in Atlanta. I didn't know about it myself so I googled it up for you.

Union

Our local newspaper "The Gainesville Times" publishes the health dept. inspection scores in the Sunday paper, complete with comments and details. In this town, if you own or operate a restaurant, you...

This is a second career for me as well. From what I can tell (opinion, you know what they say about those) you are being underpaid, and I am basing this on a couple of factors.

I have just...

5throot, post #206

AMEN!!

1982 ish Peavy T40 Bass, Peavy TNT-115 Combo Amp. I play at church in our praise team. I also read sheet music, real music staff and notes.

I am in the midst of writing a research paper for school. It's for an English class not an AC class, but I chose to write about ductwork.

My personal opinion is that centralized returns are...

The technical college I am about to graduate from, puts you on an externship with a local company after your third quarter. You do one day a week for five weeks. After that you can continue if you...

After being in the civil engineering/surveying/construction layout and site development field for 35 years (I am now 51), I am also having a mid-life "change of majors". Hence the phonetic spelling...