Ryobi TEK4 Thermometer

Ten years back I was having A/C problems at my house, and I called in a repair company. It was one of those hot Texas summer days, and there didn’t be much cool coming out of the vents. The service tech walked around checking temperatures, and he had one of these things.

It’s a Ryobi TEK4 Professional Infrared Thermometer, and it’s cool as all get out. Here is a link.

It works like this. You point the snoot of the device at, for example, the A/C vent in your room, and you pull the trigger. A laser spot on the vent shows where you’re pointing, and a display on the back tells you the temperature. Read the details on their site. You can switch between degrees F and degrees C. Here’s what it looks like when you put the spot on a vent.

And this is the kind of information you need. You measure the temperature at a vent, where the cool air is coming out, and you measure the temperature at a return point, where the warm air is being sucked out of the room. If your A/C unit is working properly there should be a significant difference in temperature. One service guy told me it needs to be 15° F. Another said 10°. I’m thinking if it’s not at least 10°, then your unit is not up to snuff and needs to be serviced.

I bought mine at the local Home Depot, and the good news is the price doesn’t break the budget, especially if you are wondering whether to throw the dice and gamble on a service call. My model may have since been superseded. Check Home Depot or Lowe’s and see what they have.

TAKE NOTE. This is not a toy. The laser beam is nothing to messed with by children.

The unit has a lithium ion battery inside the handle, and a charger comes with it. Contact me for additional advice.

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About John Blanton

I'm a retired engineer living in San Antonio, Texas. I have served in the Navy, raced motorcycles, taken scads of photos and am usually a nice guy. I have political and religious opinions, and these opinions tend to be driven by an excess of observed stupidity. Gross stupidity is the supposed target of many of my posts.
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