UEi DTH35 Digital HVAC Psychrometer Thermo-Hygrometer, Portable Relative Humidity Meter, Handheld Electronic in-Duct Thermometer, Measures Wet Bulb Dry Bulb Dew Point Temperature Humidity

I'm starting HVAC and needed a psychrometer. The price on this was great. Didn't have a ton of faith in it because of the low price and country of origin. The plastic lens over the display isn't very strong and the tip seems delicate. It would be easy to snap this in two. I plan to transport all my test equipment in a padded case from harbor freight. They have inexpensive foam cases that can be custom made to carry your stuff.I think I got a good meter. It's within .2 of one degree from my UEI PDT650 pocket thermometer. I can recommend this, too. Great price and good enough to start my new career.

It’s accurate, well sized, has a clear display & gives the enthalpy besides dry bulb and wet bulb temps.It’s appearance is also very professional. I use it very much for my HVAC work.

Love it

This is a great little wet bulb psychrometer. I took away 1 star as it arrived with a dead battery. Once I installed a new battery (CR2032) it worked perfectly and has been a big help in superheat calculation, humidity measurements, etc. It is the fastest responding unit I have ever used, and is accurate within 2% points compared to known calibrated instruments on the humidity measurements and within 1.5 degrees on temperature measurement on dry bulb and 2 degrees on wet bulb measurements. It has a large, easy to read, blue back-lit LCD display, which is nice in dimly lit basements, crawlspaces, or attics. The magnet on the back is plenty strong enough to hold the unit in place in a duct, even with high velocity air moving through it. I also like that the bulb cover screws onto the nipple on the back to provide a nice handle to hold the unit. A very useful measurement tool.

Great instrument for measuring humidity, temp, dew point and wet bulb. A must for every hvac tech (and a dentist like me on occasion) great, accurate tool gives precise readings at a great price

This tool has made me money everytime I've used it. That says it all for me. 💯

A definite must have tool especially during the cooling season to check for humidity issues. Also if you don’t have digital gauges, it’s excellent for superheat calculations

I was pretty disappointed with this piece of equipment especially since I saw it recommended by another website. The probe end that is supposed to go into whatever you are taking the temperature of/moisture level of has holes in it that allow for pieces of stuff to get lodged inside & then you have to dig them out. This is also the spot where the sensors are, so you have to be careful getting the crumbs out so you don't damage the sensors. The first time I used it, the end of the probe came out disfigured like it had melted from the temperature level. I was only temping some boiled newspaper shreds for vermicomposting, so it shouldn't have been over 212*F. It actually should have been under 212*F since I had already removed the paper from the boiling water earlier. When I test any moisture level of anything, it shoots up to 100% making me wonder if it is ever really accurate outside of simply testing the humidity in the air. Considering the cost of this item, I would expect it to be manufactured a little better. Also, I am left-handed & you have to use it with your right hand, otherwise it's readings are upside down. This isn't a huge deal, but it causes it to be very awkward when you're trying to take a reading of something you are trying to hold, etc. I searched for hours for a moisture meter for a decent price that had good reviews. Side note: I also bought a cheap little moisture meter for less than $3 that worked just as well, but the packaging was just a little bubble wrap envelope & it came from China, so during shipping the screen broke. It worked just as well as this $70-$80 meter, even with the screen cracked & the company even refunded my money. I used it for several months until it finally got stuck on 80% humidity. So this UEi piece of equipment was, in my opinion, poorly designed & overpriced. The only nice features I know of is that it has a magnet on the back of it & it has a cover for the probe.

Works just as expected, just don’t drop it

Easy to work great product

Like other reviews have said, it's not the most durable and if you're rough on the jobsite and in the truck with it it'll probably break in not too long. Easy to use extra functions, easy to read screen with backlight. Biggest complaint is there's no magnet to hold it up in duct, because of that I'd keep shopping for something else but if you do go with this one and the no magnet isn't too inconvenient you should be happy. There's cheaper, smaller, more durable no name brands with less functions and not as accurate but still accurate enough for typical use. If you want exact this is good and you'll get what you pay for. If you want good enough again keep shopping.

perfect for the HVAC trade

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