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I have a Kobalt bit holder ratchet with 1/4 on one end and 5/16 on the other. I can use it as a super tight hex ratchet or insert bits. It's got me out of some jambs many times!

I still love my Hilmor flare block. The depth gauge and clutch are awesome. I've only messed up one flare and it was user error (didn't clean the tube good enough)

So I’ve been using my IDVM 550 for a few months now. It’s been very useful and has proven accurate. The integration with Measurequick and TechLink has taken some time to work into my troubleshooting...

Are they able to control the supply temperature? How many units are you looking at doing? At our University we have some control in individual buildings because we use steam converter/heat exchangers...

Duty cycle is key with these. Depending upon the age of the pneumatic system and air consumption, an undersized compressor will burn out fast. Constant cycling is a symptom of an undersized system or...

We use significant amount of compressed air in our University facilities. I have 4 large buildings that are all running pneumatic controls. We have also not had the best luck with Speedaire. They are...

The plug clips might be old and worn and don't stay positively connected. Vibration will make loose ones fall off. Another problem could simply be a bad rubber molding that is too large and doesn't...

Trutechtools.com as others have said. There are also discount codes available. One is from HVACRSchool.com. Enter code "getschooled" at checkout for 8% off.

Holy crap am I spoiled. Where I work in an institutional setting there is usually a 6 or 8 foot step ladder on the same floor in a custodial closet. I've never had to bring a ladder with me because...

A couple of quick updates on the iDVM 550.

The inrush measurement feature is great. It has been useful so far not only in helping with an 20HP pump motor but also with duplex air compressor that...

Just wanted to throw this out there to guys in the field with experience that may want a little easier pace of life, awesome benefits, and a different environment.

I work at the University of...

Received the iDVM 550 yesterday. First impressions are that it feels solid in my hands. The carry pouch is a little cramped and doesn't quite fit great but it does the trick. Clamp jaws feel solid;...

I work for a State institution. We aren't allowed to buy and bring our own tools. They have to be approved and purchased by the Facilities Management procurement people. Really good for the most part...

Thank you for the thourough reply! I've heard you on HVAC Shoptalk and HVAC School discussing MQ and the connected tools. I'm looking forward to trying them out. I just need to get my employer to...

I think Jim shared that the 510 was not their best choice in regards to a meter. Hopefully they've learned from that with the 550.

What I'm saying is that the HF, Redfish and the other I found on AliExpress are the same basic design sourced from a manufacturer in China. It's unlikely that Redfish designed this from the ground...

This meter looks exactly the same as the Harbor Freight Ames clamp meter, item # 64017. Some of the keys are labeled slightly different but the basic design is identical. There's also an identical...

An issue that small guys have with the patent process is not only getting the patent but trying to defend it. A big company or Chinese firm can make knockoffs and sell you out of the market before...

Well, it's not an HVAC specific tool but the Big Larry flashlight with the strong magnetic base has made life much better inside tight spaces.

Just picked up two lengths. Liking them so far. I like that they are so easy to clean.

Very nice. I love Arduino. Having a cheap micro controller for limitless projects is a game changer for home inventors.

Auctions, craigslist, etc. might be good to find equipment. Just make sure you have a way to dispose of it before you starting bringing junk home!


Where I work we have lots of old equipment...