so you know how to size a unit? the ductwork?
how many microns of humidity is safe?
how many mF are safe on a 3 ton scroll?
What are the two or three main reasons why a recip doesn't start?
Why is an oversized furnace or AC not good?
What is the most common customer complaint in a home with oversized
Please name three fuel sources for heat furnaces? Bonus if you can
What are the most common igition systems for heat furnaces?
What are the common reasons for a blower not blowing heat into the
Define "supply and return"?
What are the types of air filter?
What is the start and run cycle for a 90 percenter?
surely this is something you can find on google......
WTF exactly do you mean it's not a science?
Thermodynamics = Science
Air Flow calculations = Science
Analysis and correction of any issue in a system requires a scientific
approach to determine if the cause is electrical, mechanical, or chemical in
origin. To do otherwise is known - not just in the HVAC field either - as
Yeah... Say that next time a reversing valve gets sticky. What about all the
Ho Moaners that have major problems - up to and including damage - with
something as simple as replacing a thermostat?
You forgot about electricity. If you stick to the things that the average Ho
Moaner is qualified to do, there is absolutely no issue with fuel gas or
refrigerant. You are not going to get yourself hurt hosing the dog piss off
the condenser before it eats the aluminum, or changing filters. Hey, a real
smart one might even know how to do a halfway decent job of cleaning an
evaporator coil, pan, and drain line, or change a thermostat
OK, I will bite. Just HOW is a homeowner/customer supposed to know if
a bidder is truthful when he says he does "Quality work?" I confronted
him with exactly what I expected before he even looked at the task.
Knowing what I expected, he made a bid. With that bid, I would expect a
profit for himself.
Often when someone like myself asks the opinion of those like yourself
who profess to know your work and do quality work, you ridicule the
person asking the question. Then if the HVAC craftsman does a poor job,
you do not criticize the "Professional," but the one who hired him.
I do not put all HVAC people in the same group, but your profession is
filled with more than your share of people who either do not know or do
not care. On my prior AC system I had a "Pro" check out one of my
condenser units some 30 years ago because it was not starting. Since
the unit was only one year old at the time, I felt it was still under
warranty. He came to the house, never even took out a voltmeter and
diagnosed the problem as needing a new compressor. When I said "Replace
it, it is under warranty," he told me only the parts were covered and
the labor would be $400. Five minutes after he left, I fixed it myself.
The leads from the thermostat going to the contactor were corroded and
not making contact. The unit continued to run for some 29 years after
Now I do not profess to know all that a HVAC professional should know.
But there are many problems that are simple if you have a little
knowledge of electronics. Only a fool would fail to call someone
knowledgeable when he was dealing with something beyond his competence.
In my opinion those of your profession posting in this news group would
be wiser to criticize the incompetent professionals rather than blast
someone looking for advice. When I worked with electronic technicians
who were incompetent, I felt they made me look bad because that was my
So lemme take a look at this. You asked a guy that was going to sell
you a "bill of goods" if he was good at what he did. He said "Yes" and
you believed him?
You're a freaking ding-bat.
Have you heard of references? Did you do your home work? Did you check
out his work either with satisfied customer phone calls or actually
going and looking at his work he did somewhere?
NO, I think not. You're lazy and you want it handed to you on a silver
platter. Aint goina happen, Gringo.
Exactly. You hired him. If you did your homework correctly you wouldnt
have a problem. Stop this blaming shit on us. If you want it done
right you have to spend some time checking references.
As with any and every other profession out there. Gee, Ive never heard
of a bad car mechanic, doctor, lawyer, car salesman, investment
advisor, stock broker, president, etc. etc.
Once again, you are telling me you found the biggest cheapest crook on
the block. "Pro" you say? Bullshit, I say. What did you do. Open the
yellow pages and pick the biggest ad? That was the extent of your
homework. And 30 yrs ago you did the same amout of homework you are
doing today. I guess some people like you just never learn.
Are you saying that a licensed HVAC person should NOT have been
believed??? Often the accusation is made that the customer did not make
clear what he wanted or expected. I did so, and he LIED just to get the
job. THIS is my fault????????
I am a ding-bat for believing what he said? Am I also one for
Did YOU read the previous comments I posted about how I asked my
neighbors about reputable HVAC personnel??? You seem to be admitting
that there are too many licensed people performing the HVAC job who are
not doing good work? With THAT I agree. What I do not agree with, is
that it is the total responsibility of the customer to discover who
these people are before they hire them.
If you took your car to someone to have it serviced, and made it clear
exactly what you wanted, would it be YOUR fault if the mechanic did poor
work??? I think NOT!!! I don't blame you for trying to defend someone
in your trade, but I also believe you do yourself a disservice by
defending the indefensible.
No, I called the company whose name was on the installation brochures.
I thought that someone who had installed the units would be more
familiar with them than someone who had not. Remember, I had only been
in the house (NEW by the way) for about a year.
That was the extent of your
I find it interesting that you do not even address the fact that the
serviceman was perpetrating a fraud by suggesting work that was NOT
needed. Loyalty to others in your profession is one thing, but
defending the indefensible is shameful.
No, but I am beginning to feel qualified to hang out a shingle for HVAC
Was it the owner of the company that came out?? or just some flunky wanna be
tech, collecting a paycheck on commissions??
You should have politely said "Thank you", then called the company back and
told them to send out a *REAL* tech, not just a compressor sales person. You
can't diagnose *ANYTHING* without actually checking and taking measurements.
But then you already knew that, right??
You actually believed the compressor sales person when he didn't even take a
meter off the truck??
Did you not tell him exactly what you wanted and not even give him a chance
to diagnose the problems??
Did you not tell him exactly what you wanted and not even give him a chance
to diagnose the problems??
And you have not yet had the system serviced in a year??? Oh, thats right...
the house is only a year old.... probably a "spec house" done by the lowest
No fraud if you told him what was wrong with it and you told him what you
wanted. He was just following your directions.
Knock yourself out... The City of Hattiesburg, MS won't even talk to you
about a license unless you are a *MASTER TECH* with a minimum of 2 years of
college/tech school and 5 years of OJT working for a Master Tech.
I don't know where your at, but the requirements keep getting tougher.
We seem to be mixing two different events. The event above dealt with
the complete replacement of my heating and AC units after having been in
service for 30 years.
The diagnosis of a faulty compressor occurred only one year after those
old units were originally installed. That WAS diagnosed without taking
measurements. That person DID NOT own the company.
Your point is right on, I DID NOT believe him. That is why I asked him
to leave and fixed it myself. I knew he was not obtaining enough
information to effectively make such a diagnosis. He was apparently on
a commission and wanted to sell something.
I am again talking about the installation of the new units. I pointed
out the installation problems and he DID correct them. There wasn't
much to diagnose.
One problem was he installed the gas cutoff valve for the furnace
between two pieces of flexible tubing. If I am not mistaken, the gas
cutoff valve is required to be attached to rigid pipe.
Another problem was a duct was so poorly connected to the plenum that
you could insert your finger in the gap. His solution was to duct tape
over the gap. My solution was to narrow the gap with sheet metal.
Yet another problem was using wire nuts to splice a short Romex cable
going to the furnace. Then he wrapped the wire nuts with Duct tape
rather than enclose the connections in a electrical box.
I could cite others, but you get the idea.
Before he even bid on the job, I told him I expected a quality job.
Also, that if he could not do it, he should not even bid. He promised a
quality job and then inspected for what was needed. After that he made
his bid, and I paid him what he asked. I did not squeeze him for a
Again, you seem confused about the two different events. The bad
compressor diagnosis occurred some 29 years ago when the house was
almost new. The unit that failed to start was only one year old at that
time. It was this unit that he said needed a new compressor. It is
this unit that I fixed in five minutes and continued to run for 29 years!!
The replacement of the heating and AC units occurred about six months
ago after the original units had been in service for 30 years. It is
this job that was bid on and promised to be a "Quality" job. I hope
this clarifies the situation.
HE told me the compressor was bad. He was WRONG! For as you said, he
could NOT have diagnosed the problem without having taken any
measurements. I never told him what was wrong or what to do.
I never said your job could be performed well by a dummy. There are
very few jobs today that do not require training and some degree of
expertise. If you are a good HVAC person and do good work, more power
to you. I wish they all did.
I studied for many years to be able just to learn my trade, and the
learning never ended. But I thought those who failed to take pride in
their job like I did were giving my trade a bad name. I hope you see it
the same way.
Exactly! It's your fault. If I told you that I am the President are
you really going to believe me just because I said so?? Dont be so
gullable. You are the one making a decision. YOU have to make it an
I am not making you believe me. I am pissing out advice. You are free
to do whatever the hell you want with it. Check it our or dismiss it.
Its totally up to you.
Yes, I read your previous comment. Licensed? Hell, if you really look
you will see that most of them are not. That's a quick tip they arent
professional. You can disagree with me all you want that its not your
responsibility to discover the right guy but in the end it is your
money. You can piss it away foolishly or you can do your homework and
find "the right guy".
Yes, for the most part it would. I would first do my homework on what
establishment I want doing my repair work. Then I would check which
mechanic was better/worse. Ive done it. Takes a bit of time but it
works. I had one at a Ford dealer stick a BB in a vacuum line to my
EGR valve to stop it from backfiring. I found the BB and had a field
day with them. Took it back and showed the mechanic and the manager.
Lots of jaws dropping but in the end I got it fixed and fixed right.
SEE! You proved my point once again. You did no checking of
references. You went down to the furnace, looked at the name on the
brochure and figured all would be well. No checking whatsoever and you
got exactly what you asked for.
Familiar?? No. You had an installer install it and a tech to come out
and fix it who never saw your furnace since he didnt install it. He
just fixes them. And by the way, a year is more than enough time to
check out a good HVAC company.
Now your being just plain fuckin stupid. Id NEVER claim loyalty to
someone in this business perpetrating fraud. IF you were screwed you
need to handle it. Thats what lawyers are for (or at least are
supposed to be for). Im not the one that got hosed. You are. Deal with
it and handle it. Just last week I turned in a guy that had no
Masters, no Occupational and was doing work in broad daylight on the
side. He was breaking the law. I have all the credentials and follow
the law (as best I know). He didnt. This was the 2nd time I caught
him. His court date is coming and from what I understand, he is going
Sorry bout his luck.
Cool. Start your own business. Its soooooooooooooooo easy. Everyone
can do it.
In defense of Bubba,
During a moment of soberness, he made an excellent post on how to find
competent HVAC professionals.
His advice was to call the local hardware dealers and ask which company they
would use. Since that time, I have developed a feeling of respect for him.
It is just unfortunate that I have a preconception about people called
Thus I have completed my objective (once again).
Now let me, let you in on a secret.
My real name isnt Bubba.
I hope this doesnt disappoint you too much. :-)
Oh, and one more thing. I dont need you defending me. I do quite well
all by myself, thank you.
I think you should re-read your posts. You might just decide you
should take him up on the "Defending" part. Then again if you read ONLY
your posts and nothing else, they might make sense to you?
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