There are 1st year HVAC technicians with 20 years of experience under their belt….and there are 20-year HVAC technicians who have 1 year’s experience under their belt….20 years in a row…don’t be that guy.
Your time in the trade doesn’t mean squat, it’s what you did with the time that counts.
Everyone talks about how they provide “Excellent Customer Service”, but what does Excellent Customer Service mean? If you ask 10 people, you’ll get 11 different answers.
Here’s an idea, lets look at what customers think Excellent Customer Service is…..I know, I know, crazy talk….what was I thinking.
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There are two terms you need to understand if you want to sound somewhat competent when describing a tower’s performance: Approach and Range.
Range is the temperature difference between the inlet water and the outlet water.
The formula is EWT (95℉) – LWT(85℉) = Range (10℉)
The higher the range, the more efficient the tower.
Approach is the difference between the outlet water temperature and the entering air wet bulb temperature.
The Higher the approach the less efficient the tower.
The formula is LWT (85℉) – WBT (78℉) = Approach (7℉)
One of our devout readers suggested we toss together some posts about cooling tower basics, maintenance, and troubleshooting. My first thought was- Good idea! My second thought was, why didn’t I think of that?
Cooling towers are like air handlers and pumps; very simple, yet so critical, and so misunderstood.
Because of the terrible under appreciation and lack of respect people have for these quiet giants of our industry, we are dedicating the next two weeks to these machines we all take for granted.
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From time to time someone asks about thermistor sensor averaging. Typical questions are:
- Why do I have to use four?
- Why do they have to be connected in series-parallel?
- What the heck is series parallel?
- Have you ever seen a rash like this before?
The answers are:
Interesting if you are mathematically inclined/deranged. Magical for folks like Patrick…(math hates him, and the feeling is mutual)
And, you should really see a doctor about that….
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Simple math, 10 people sitting in a room for an hour is not one hour, it is 10 hours.
Ten people averaging $35/hr sitting in a room for an hour costs $350
If those 10 people sitting in a room averaging $35/hr are technicians that would be billing out at $125/hr, the your meetings cost is not $350, it $1,600 ($125 x 10 +$350)
Not all meetings are bad, but ask yourself:
- Would I still have this meeting if I was going to be billed for the cost of the meeting?
- Is the value worth the cost?
- Are the right people in the meeting?
- Is the meeting necessary?
- What can I do to increase the value of the meeting?
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Electronics work just like you do; they determine what’s happening by looking at inputs like temperature and pressure, and decide what to do based on what they “see”.
The only difference between your brain and electronics is you use your eyes, ears, and hands to determine what’s happening, electronics uses sensors like thermistors and transducers.
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Hopefully in Internet Security-Part, Password Don’ts, I convinced you how important strong passwords are.
What is a strong password?
An 8 digit numbers only password only has 99,999,999 possible combinations. How long do you think that would take a computer program to figure out?
Eight random letters, has 2,088,270,604,576, combining letters and numbers adds 8 more digits to the numbers.
If we were to include symbols such as ?$#@%&* our passwords becomes even stronger.
Today, most passwords are case sensitive. By combining upper and lower case letters in a password, we now working with 52 letters, instead of 26. Also, consider using capitalization wrong. Yes, get revenge on your 12th grade English teacher and capitalize the second letter of a form word “kEvin”, or capitalize the last “keviN”
Tips for creating strong passwords
- Combine letters, numbers and symbols
- Substitute numbers and symbols for letters
- The longer the better
- Avoid dictionary words
- Use capitalization
- Use capitalization wrong
- Avoid using personal information that can easily be found out about you online. (That basically means any personal information)
In part three, we will explore some strategies for creating strong passwords that we can actually remember.
Control Boards rarely fail, they’re usually misdiagnosed or murdered.
When control boards do fail it’s normally an output contact failure caused by age or an electrical surge like lightning or a technician shuffling across carpet before touching it.
It’s a fact; static electricity will ruin a control board faster than a fart can ruin a first date.
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Your username and password are you first line of defense for keeping your online information and accounts safe.
Don’t not change your password Frequency
No matter how strong your passwords are, if your bank, credit card company or email host gets hacked, then they have your password, but the password becomes useless once you’ve changed it. Most experts recommend change your passwords at at least once a month.
On an Island by itself
Do not use the same password on multiple sites, or if you do reuse passwords for low damage sites such as online forums, comment section on websites, please, I’m pleading with you, don’t use that password on any important sites, like email, banking, online storage, etc… If a hacker knows one of your passwords, that is the first password he is going to try on another of your accounts.
- Don’t use just numbers
- Just how long do you think it would take a computer program to try every variation on a 8 digit number?
- Avoid dictionary words and names
- Don’t use you kids or pets names, old phone numbers, 1234, abcd, password (yes a lot of people use password for their password).
- Don’t use the same password on multiple sites