My name is Tim De Stasio. I've been working with HVAC systems for over 25 years. I've worked as a service technician, installer, designer, business owner and instructor. I've learned a lot over this time, and have made a few mistakes too. But what I know, and what I've learned can propel your HVAC career to the next level. Join me as we take the science of HVAC and break it down in to practical knowledge that you'll use every day.
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You plan on adding any more videos with the dg8? I bought mine about two months ago this ago, was mainly planning on using it to confirm duct leakage in houses. Only used it a hand full of times, though.
I did a few more using it and the TruFlow Grid. Scroll through my videos from about 6-8 months ago.
How can I speak with you about a manual D and help with equipment? We already have the manual J. Thanks!
Email [email protected]
From this demo, it takes waaaaaay to long to run a load, running around adding walls. No Thanks, measure all the windows, block load and move on. Also, still referring to them as “Master Bedrooms” is a No No. Main Room, Main Bedroom, we don’t have slaves and we are not Masters. Just a pro tip on language as we adjust to our customers.
So your conclusion is to not do a proper design but use woke room names. Got it. Please unfollow me.
Great topic! I have had this exact debate with a few of my peers. I despise "loss leader" sales. It's hard to break what people are used to, as proven by JC Penney years ago. But I've also found that simply being honest and upfront with theirs and our expectations, goes a long way. If you're willing to guarantee what you promise and stand by it, then price is typically not an issue to those that understand and appreciate the service. And of course proving the results makes all the difference.
Another great discussion & EDU. Cheers!
I am in agreement. Although my business model is a little different than yours, my service call fee is a little bit higher than a number of other companies out there for the same reason as you mentioned in your video. I'm not trying to get everybody as a customer. Some of the other companies that are charging very low diagnostic fees will not even correctly diagnose the real problems with the system and will be quick to push a whole new system on a person.
They view it as a sales call
First law of thermodynamics, "There's no such thing as a free lunch", thus you get what you pay for. The HVAC industry has become so predatory and many contractors will use the low introductory service fee to get in the door so they can rip you off. That's what you're competing against. I was in the business for over 30 years and it took me about 5 years to figure out what you said in this video. Unfortunately, when you're just getting started and don't have the reputation yet, you almost have to eat some crow from undesirable customers until you can build a good reputation and customer base. You can pick your friends, you can pick your nose, but sometimes you can't always pick your customers. Be grateful you've arrived at a place in your business that you can afford to turn away undesirable customers. Congratulations.
Appreciate that!
What a year that was! 🤩
Why don’t we ever get absolute humidity in the reports? Relative seems like it needs to come with additional info about how much the air can hold..
I wish we would get reports in absolute humidity. You have that option with @measurequick.
Straight to the point ❤️
Sorry, its a nice unit but the dba is 50 at 3 feet
Interesting. Most dehu's are loud as they have compressors in them and are designed to go in attics and crawls. Isolation pads help a lot.
Very interesting! Thanks for doing these Tim!
You are very welcome!
ACCA manual J is correct for a large majority of the population about what they call so-called comfort window. But then there’s a large majority of the population who is on the other two sides of the comfort zone Who finds 75° uninhabitable. The only time I felt 75° was comfortable and my son is the exact same as me is when we were in Arizona in the summertime and humidity was 8%. Because neither of my son or myself have ever been in 8% humidity, we both were surprised and very delighted to find out. We can actually be comfortable at 75°F.. but it had to be 8% humidity. Even in low humidity for myself and a few others like us 75° is extremely hot and we sweat like pigs if we do any movement at all. Even in low humidity out here in California San Francisco .
Really important information here and as you touched on balancing small rooms is critical.
Yes it is thanks
When you say that it only allows a single user login, does this mean you can only be logged in on ne device? I'm fine with sharing one login for different devices, but we each need to br logged in our own phones.
Only one email login
Thanks for this video Tim! I was looking at a Coolcalc load I ran and noticed it gave me a humidification GPD number to maintain my desired rH selection. My question was; “is really an accurate thing, does Man J really assist in humidifier selection?.” Answer, yes it does! 🙌 Pretty dang sweet! Especially for this particular one because I blower door tested this home too, so more accurate. 👏 Thank you again so much for making this video. It’s hard to find good resources sometimes.
Thank you I’m glad it was helpful.
Thanks Tim, that's a wonderful explanation!
Thanks!
Can this detect leaks like 410a or r22 if its in the lineset or coil?
What program was that?
Wrightsoft
I don't like Gatorade because it has high fructose corn syrup 😁
Than what happens is the installers rush and don’t do things properly then us service guys end up going over there and spending a few hours straightening things up at no charge so it’s a double whammy all the way around.
Preach it brotha
Agree 100% Since I started in the trade 23 years ago, it has been this way at every company I've worked at. I started in installation. Still do them now from time to time. I would add, not only is it inconvenient to the home owner when the guys work that late; it's also a huge inconvenience to the installers families. They all deserve better! From the client, to the installers and the installers families. We have to do better. #BetterHVAC
For newbies, one word of warning, specially, with cheap nitrogen regulators, even sometimes good ones Diaphragms and spring adjusters were never meant to be accurate at such low flow rates, and during the middle of your abrasion, occasionally the diaphragm will move all by itself, and either cease the flow of nitrogen in the middle of your brace or it’ll open up a little bit more and a little bit of excessive pressure Nitrogen pressure in the pipe because it cannot release fast enough to the valve core opening, pushing against your brazing, making a hole or a push through into silver liquid brazing rod with the excessive pressure These large high-pressure nitrogen regulators were designed to work at greater pressures . And that small little one extra step of adding the flow regulator is designed for my small pressures and flow rates that are precise and will not turn off or during the middle of your procedure Just a cautionary note to pay attention to to see if your particular regulator is extremely sensitive that can change all by itself in the middle of your operation like turning off the nitrogen One method you have an extremely low flow of nitrogen tap the back of your regulator diaphragm with your wrench or screwdriver and just a little bit . And all of a sudden, your nitrogen pressure pop up giving you too much flow or completely shut off then you know you have a regulator that cannot be used for this particular situation . Second note, very sensitive parts of your skin for testing extremely small flow of nitrogen is the skin on your upper lip below your nose coming out of your hose or the skin just under your eye around your face extremely small flows of air . Of course you would not be trying to adjust airflow with your eye stuck towards the opening that could possibly jet out high-pressure and blind. You have to say that because I know common sense is not common anymore.
Good reminders- thank you. I just ordered an inline low flow from True Tech Tools. It has 3 settings- Purge, Braze and Off.
good info, thanks
The change in humidity on the humidity ratio axis on the right of psychrometric chart gives the evaporation by multiplying with latent heat in X Joule / kg On the left on enthalpy axis these two points give total enthalpy change dH in Joule/kg. dH is sum of latent and sensible heat (dH - X) = Sensible heat in Joule/ kg
The true flow grid has become such an important tool now. If you don't measure you're just guessing. Im amazed at how many times I see a 5 ton blower drive on a 3 ton system and it was left at the factory default speed.
Awesome comment
I dont do it and never will! And yes I work on all the systems I installed 15 to 20 years ago there still up and running.
Ok hack thanks for checking in. You can unfollow me now.
I’m a pipe fitter for new construction refrigeration. Hands down flowing nitrogen through copper pipes makes a hell of a difference.especially on large systems. I hate when people don’t do it.
🔥🔥🔥
I don't braze with nitrogen I Zoomlock Still need nitro for pressure test
You had me at the first half LOL
They ain't pressure testing either Tim 😂 that's why
I have met a lot to do. Including the pack of rednecks that trained me years ago.
My father taught me when I was 12 years old to use nitrogen and that was 46 years ago. When my father was a young man in his 20s, he was talk to use nitrogen by two of his older mentors . So this information got lost over the decades and did not spread around is still a big mystery. More people say they never heard about it then heard about it . I wonder what they identify as 🤣for the ones in denial . 🤦♂️ But we always can rely on their work to provide us with lots more plugged expansion valves, cap tubes, and roasted compressors . Because these are the same guys who do not believe in complete vacuum that we get the copper plated bearings from. So we have to give a two thumbs up 👍 👍 To all the good old boys . Named Billy Bob Butt Crack with their family tree stemming DNA 🧬 down from the Whitaker family.. (“ look up the Whitaker family on Google”) And you’ll see who those guys are who don’t believe in nitrogen .
How do you go from training to advance mode ? I’m not seeing that option on the app?
Nice video again
Thank you!
Wow! That was super thorough. I'm the unofficial hvac service manager (also serviceman,installer and part time scheduler) for a sheet metal installation company and I've been working on streamlining service procedures with Measurequick, etc. I'm just wondering how you charge for a service like this. Do you have a flat rate for the basic job or do you bill hourly?
I charge for about 1.5 hours per system. Here in heat pump country we can do one yearly service, not 2. Gas may take longer since I would do combustion analysis as well either on this trip or a separate one. But when you think about it, if a service contract is $25/ month, it works out to around $200/ hour. Not a bad rate for maintenance.
@@timdestasiohvacThanks, Tim. I'm also in heat pump country on Vancouver Island with one service a year.
You're knowledge of HVAC science seems about as thorough as it gets. Where did you get your training?
🤦♂️🤣
Thanks for the shout out to HAVEN!
Like and subscribe! 🤣🤣🤣
This is similar to listening to videos in a hindi language. Kill the music man!!!!
I'm looking into you already. Will be scheduling the demo. Watched your video demo.
😊
Tim, Great video! Looks like a great resource and diagnostic tool! Cheers, Eric
I was just saying to my son, no pyhsometric Saturday? Tim’s slipping! And here you are.. thanks you
Just had some stuff going on in the morning but I dropped it Saturday!
@@timdestasiohvac you don’t work for me Tim! But thank you for the training. Happy Easter
Did I misunderstand, or is it just with this tool....I thought that with a static pressure tip, point the tip against the airflow direction (points opposite the airflow) in both the return and supply.
Try it both ways. You'll find its the same each way on low velocity.
Huge fan of TEC products. Any recommendations on the plugs/caps you've used for those test ports? Where to acquire?
True tech tools has bag of 250 from NCI for dirt cheap
@@timdestasiohvac Grazie! The 3/8 in. out of stock :-(
Good demo info, I have had the system since it came out years ago. If you can afford it, you won't be disappointed. Another game changer if quality, not quantity, is your profession. They just came out with an update to use it in the heating season for the furnace.
Thank you!
You only made this video to show everyone your a .21 TESP !! How dare you shame everyone!
Nice video Tim , how much it cost to buy ? How much you will charge customer when you used it?
Great video, Tim😊
Thank you! 😊
I wish I would’ve had this 30 years ago. Once you have it you cannot imagine life without it.z Measuring other peoples work I was taught from my father to over size ductwork and filters, so I never had a problem myself It’s the other people you gotta worry about who make excuses
I have writesoft which I have used for yrs, then I just purchased kwik model, there’s something faster every week 😫
Yeah, they all have their pros and cons