Still in use. As old as the house as far as I know.

Who has the best test for level 2. I suck at taking test and often bomb because of my reading.

I'm working for a customer with a 1993 Lennox G23 that he's determined to have repaired. My issue is I've not had to mess with intermittent pilot systems barely at all, most places I've worked for only let me force the customer to replace it and that's it.

Essentially the behavior it's exhibiting is that it runs the inducer, the spark igniter lights the pilot, and that's as far as it goes, the pilot is lit and it just keeps running the spark trying to light it. I'm measuring about .4-.5 millivolts on the flame sensor, I cleaned it and even tried angling it into the flame but nothing seems to make a difference. I replaced the flame sensor and the flame sensor wire as well and no change. The flame sensor is IN the flame, it's getting orange hot in the pilot flame with it sparking away.

My thought is that it's a bad ignition controller, model: ICM2902 but before I waste the hours and patience of the customer I wanted to ask you guys, see if there's any old timers that have worked on these things lots and would maybe know better.

Thanks!

https://preview.redd.it/et8398gd7k3e1.jpg?width=1423&format=pjpg&auto=webp&s=0706717f42d905c9c6447f3ffdb3bf433d309975

I had this debate with a coworker today where I basically explained to them that I always give the customer 30days on a red tag whenever I find a cracked heat exchanger because it's a non immediate hazard.

My thinking is that the ventor motor pulls products of combustion through the tubes of the heat exchanger, and in fact will pull air into the crack because of it. No CO will enter the space. When the blower starts after a few seconds, the o only thing that would happen would be a potential rollout.

Co worker says that it's an immediate hazard due to potential CO entering the space and immediately shuts the heat down. I don't think that would ever happen and thus label it non immediate and give them 30 days to fix before the gas is shut off.

I am now coming to reddit to hear more arguments for either side

Hvac tech here... on a very puzzling one. Have pressure switch stuck open on a 90% nordyne downflow furnace. Pinpointed the gas burner box where this occurs. Manometer reads .8 with this. When I bypass this port I get 2.5

Have done a combustion analyzation test and everything looks good. Burner flames look good. Wtf is going on??

Has anyone actually used 454b in a 410 air handler or have heard of this? Obviously it's not going to get to specs but was curious how different pressures and stuff are. Looks like 454 is flammable as well.

Im sure some of you have similar stories but ill share mine. I have shared some on here before and im not saying this is ideal but keep your chin up for the youngsters and for the OGs give some advice. I have 7 years in this trade, metal fabrication(3 years, residential and commercial), rough installing(2 years), and retro residential(2 years). My focus of this is on my Res experiences/experience. My first summer (in Arizona) I met a guy while I worked at a fab shop/supply house. I worked with him last summer(of 2023) but quit on him about mild June. He was hard to work for. Not much older than me, he owned his own business, but i couldnt deal with his management style. We had similar upbringings, (house full of brothers). So I didnt think i learned much from him but I kept going after I left.

This past summer I had a badass summer(2024) for a different company. I worked for a small company we worked hard I learned a lot. Work slowed down but luckily I got a side gig that had turned full time so I will be leaving that company this week, Two days ago my old boss texted me seeing if I was looking for some work on the weekends. I was sorta hesitant at first but he is a cool boss just needs to learn about how to manage better. I met up with him early this evening, He sincerely apologized, and we made amends. Crazy thing is I worked for a slightly bigger company this summer of 2024 and we slowed down but my old boss is hitting me up saying I need help... I was his only employee when I worked for him. He has 1 other employee now so I will see how this goes. He admitted I worked very hard for him and one of his previous employees mentioned seeing me because I got a part time job as a bouncer at a local club is why he decided to contact me.

When I got into HVAC at 28(im 35 now) I needed a job which started me in metal fabrication. I pushed myself to get this far. I have other endeavors id like to pursue but this is where I am with having a trade to fall back on. I have said it before in previous post and some of the OGs on here say it also. Know your worth. In Rez we have a hard job, do not let employers walk all over you. I will walk away from my old boss if he gets acting like he did when I first worked for him.

My current full time job in refrigeration is so easy and I get paid better than I did in both my previous companies, but I am still humble, and feel I have a lot to learn. Maybe one day I can run some residential crew for a company.

For the OGs how should I approach this with my old boss? Its winter time in AZ and he is still busy with jobs. My current company im about to leave hasnt hit me up in 4 weeks. Im still on payroll but luckily I have this side gig that as off today I had the conversation with my Boss and without hesitation he said you can put in your 2 weeks "but if they need you and you give me notice you can go help them with installs"(my new boss we do nique jobs i have talked to him about getting into Rez).

In all my hard work has paid off. I had a rough year in my personal life but I wont go into details. I stayed focused and right when I was losing hope everything has worked out. Well boys that is my rant I just wanted to be a beacon of light for this pushing thru it.

Peace out

Kupakeep

I hope you catch your wife cheating on you tomorrow at thanksgiving dinner. Hopefully with an engineer that made a better package unit, i bet she'll tell him his package is a lot better than yours. You made a complete and utter piece of shit that is deliberately unserviceable, just like your pathetic excuse of a limp dick. The wiring is a mess, the blower is bizarrely clumsy to remove, and i shouldnt have to have 2 guys lift up on the condenser coil to pry the heat exchanger out of it. And fuck you for hiding the screws to everything under fiberglass insulation.

im newer, had a service call for york high efficiency furnace, issue was blocked return vent, but the inducer motor was 3.0 amps FLA is 2.65, would this be worth bringing up to cover my asss later if it fails?

3,500,000 microfarads..🫠 been awhile since I installed an audio system. The 1 farad and 3.5 farads were about the same price and I was expecting something like the size of TallBoy but I just busted out laughing when I pulled this out of the Amazon box. These things meant something else to me before years in hvac. But damn

Just used the diversitech flush kit to clean out a cylinder that someone mixed oils in. Looked up the SDS sheet and it is basically paint thinner and has Acetone in it. Anyone had any luck using Acetone or Alcohol to get oil out of tanks? Or any other better ways of getting oil out?

Anyone seen and have a clue what in the oil would cause over firing with bright blue and green in the flames?

Let the pump run all day, came back and almost below 100 microns. Tiny Carrier mini split, only hold less than 4lbs of refrigerant. Still proud of it tho.

Ladies and gentlemen, I managed to throw a middle finger to the sales department and to some of the management, thanks to me understanding the science behind our trade.

So today started out slow. The fleet department audited my truck, so I was stuck BSing with my coworkers while they counted the 57 different gas nipples on my truck, and wonder how the hell I work in such a mess. Well while I had the down time, I decided to read the job paperwork on servicetitan. Videos showed a basic full, 3 ton furnace, 2 1/2 ton AC, nothing too fancy. Except for one notable detail: The sales guy wanted me to replace their 28x28x12 air base box with a 17x28x6 air base box. In short, they wanted me to downsize by almost half.

Now this made no sense to me, a bottom 16x25 filter rack is capable of providing more CFM than a 3 ton can use, and to put the cherry on top, the sales guy wanted a 20x25 filter put on. So I head to my direct manager, and ask for permission to go with a bottom filter rack and avoid removing a box and rebuilding a return. He reviews the paperwork and agrees.

Two hours later, my ass finally rolls up to the customers house. Annoyed that today was slow, the apprentice and I do the walkthrough and discover why the salesman/customer wanted the box replaced: Rust. Well, I tell the customer outright; "I'm going to install the furnace and AC no problem, but I'm going to inspect the rust first. If it comes off and is superficial, I'll leave the duct and put the filter on the bottom." The customer is skeptical but agrees so long as the rust is gone.

Well I get everything ripped out and proceed to go ham on the ductwork with my shopvac, wire wheel, and random solvents I found in my truck. An hour later, the ductwork has a dull shine to it again! Success! I show the customer and she's happy, so I shoot a text to the sales guy asking him to readjust the invoice for items not used. No problem, right? The customer is happy, I leave the ductwork capable of supporting a 4 ton, and all problems are alleviated.

Two hours pass. I've finished metal work and connections. The AC is released and we're looking at an EASY 2 o'clock day before Thanksgiving. But what ends up happening is an adjacent manager to mine calls me. "You need to rip out the equipment and install it how the 'Supervisor designed it'." This caused me to snap. I harbor no hatred towards this manager, he's chill and funny. But holy shit I snapped. 30 minutes of me yelling at my phone about how the sales guy is greedy and doesn't understand a damn technical detail. I used big words I've only ever read, it was wild.

Well after that... Awkward phone call, I discovered the sales guy had spammed my texts. Telling me I was an idiot and I had no right to do this, yadda yadda. Well my direct manager rolls up the job, the man who taught me all I know. You want to know what he does? He has me explain every step I took to arrive to the conclusions I did, and had me show my work on the math.

30 minutes of us nerding out later, and my boss has my back 100%. The sales guy was dead wrong to freak out over the entire thing, and we discovered that the return trunk actually needs to be bigger. But I'm not here to do a reduct, I'm here for a furnace and AC.

So not ONLY did I secure the customer a discount by opting to use my brain; I also had my manager behind me 100% and now the sales guy is going to get chewed out for being a greedy idiot, and the other manager is going to get a reminder that in our company, installers are the professionals here, not the salesmen.

Fuck I feel so glad this worked out, I really didn't want to quit.

I'm a former residential service tech/installer of 10 years and recently have been promoted to manager/supervisor of the install department at our company. I oversee 3 install crews and 1 electrical crew, for a total of 8 guys.

Our company Christmas party is coming up soon and now that I'm the manager, I'm responsible for finding gifts for our guys. Everyone will receive a cash bonus, so the gifts will be on top of the bonus. Boss man has given me a $200 budget per guy, to give you some ideas of things we've gotten in the past: Hammer drill/impact driver kits of our brand of choice, batteries and chargers for our tools, Yeti coolers...

I can't decide if I want to get some kind of tool/something work related, or something non work related. I'm thinking getting a tool could imply we expect more/better work now that we are providing them with more things to do their job, so I'm leaning towards something non work related. So I guess my question is what kind of gift would you like from your company?

Probably leak testers in my opinion

Months ago, I notified my boss that I was going to get surgery done on November 26th to get my gallbladder removed. It was an ongoing medical issue that kept getting misdiagnosed for over 20 years, only to be found by an MRI for my liver for a different problem altogether.

The surgery date just happened to land on Thanksgiving week. Monday was my last day until my FMLA started. My boss kept insinuating that there's a way for him to deny the FMLA. He's stated this multiple times over the months.

I had the surgery yesterday. I thought it was going to be nothing, but it's much worse than I thought. I'm extremely sore, my belly and chest is black and blue. I just hope I'll be ready in 2 weeks to get back to work. The doctor said no lifting over 10 pounds until I'm completely healed up. Right now, I'm so physically disabled, I can't even physically drive a car. Even something like taking a shower is taking a huge toll on me.

I can't even think of extending my FMLA. But even if I get well and come back in 2 weeks, I have a feeling my boss and the assistant managers are going to have it in for me. They've been giving me the stinkeye for months now.

I'm having trouble locating a replacement gas valve. The valve is a Honeywell form no. 96-550. The boiler is a hydrotherm r120. l'm wondering if there is a modern gas valve that is compatible. I work in refrigeration and I'm fairly new in the trade so l'm hoping someone more experienced might have some advice. Thanks!

So apparently I have now inherited taking care of the community pool heating system. It runs of a multiple boilers.

Looking for some information on how they are supposed to work and some basic diagnostic information. That way I am not going into this completely blind.

The coworker inherited it from just worked on the boilers and let everything else go to shit.

All the supply houses near me except for johnstone don't allow personal use purchases, even for techs. Need to have a business account. I'm just doing side work here and there for family and close friends. Couldn't get a Rheem spark ignitor today.