The easiest thermometer to use for all patients. 

Over the past few years, I’ve found myself as a caregiver to patients of all ages. My fiancé is 40, my step-daughter is 16, and my fiancé’s grandmother is 85. She is probably the patient in the house that we monitor the closest because she has a compromised immune system due to past cancer treatments she’s had to endure. Anytime she is ill, we try to let her rest as much as possible because we know that’s what is best for her healing process. There was one time this past year when she was battling with pneumonia and we had to keep an eye on her temperature. So, how do you take someone’s temperature when you want them to rest? The answer is to use an infrared thermometer that doesn’t require that you actually make contact with them. The iHealth PT3 Infrared No-Touch Forehead Thermometer is perfect for this sort of mission.


The iHealth PT3 Thermometer is an infrared thermometer that provides 1-second testing for current body temperature reading. It features a high-precision, ultra-sensitive infrared sensor that measures IR energy emitted from a person’s forehead. It collects more than 100 data points per second. It’s a safe, hygienic way to capture someone’s temperature with its no-touch design. There is a gentle vibration alert that happens when a reading has been completed, which replaces annoying beeps that usually accompany temperature readings. It has an LED-backlit display that is easily readable at night or in the dark. The PT3 also has a built-in distance sensor and environmental sensor to help avoid invalid measurements. 

iHealth PT3 Infrared No-Touch Forehead Thermometer REVIEW

In the Box: 

  • iHealth Thermometer PT3
  • Instruction manual
  • 2 x AAA batteries
  • Quick user guide

Measurement precision: 

  • ±0.4°F (±0.2°C) within 95°F-107.6°F
  • ±0.5°F for other temperature ranges
  • Display of oral equivalent temperature
  • Measurement Range: 89.6°F -109.2°F (32°C-32.9°C)


  • Thermopile array sensor (infrared sensors)
  • Distance sensor
  • Environmental temperature-compensation sensor


The iHealth PT3 comes in a pretty standard box. There is an image of the product on the front with the name and basic description printed above it. I’m rather fond of iHealth’s brand colors – orange and white – because it makes it easy to spot their products on a shelf. It’s also very clean and matches with a perception of high technology (in my opinion). I really like that most of the main details are shown on the box. One of my favorite features of this thermometer is that it does ‘not’ work with an app. I know that a lot of people would prefer that functionality, but for something like this, I just want a quick, easy to read device and the PT3 does that for me. I’ve used some of those other models that pair with an app and as nice as they are for documenting a fever/symptoms progression through an illness, sometimes you don’t want to wait on a phone to go through its processes. When you have a sick child that just wants to rest, the last thing you want to do is say, “Hang on a second, honey. The app is connecting.” That’s why I like the iHealth PT3. It provides a quick accurate temperature reading without disturbing the patient. 

iHealth PT3 Infrared No-Touch Forehead Thermometer REVIEW

Another feature I’m quite fond of is the fact that there is no annoying beep when the reading is complete. You simply press the reading button and hold it until the thermometer vibrates. Then you read the temperature on the display. That’s it. The only thing I wish this thermometer did was to have a rechargeable battery. I don’t really like that after a certain amount of use, you will be left with dead batteries. I’d much rather have a rechargeable version that you could pair with a charging dock so that it always remains charged and ready to use. 


To test out the PT3, I used it on myself when I had a sinus infection. I didn’t feel like was I running a fever (other than having a bad headache) and my forehead was cool to the touch. When I took several readings using the PT3, I got the same figure every time — 97.7º. I decided to test the infrared thermometer against two other types of thermometers — a digital oral thermometer and a digital in-ear thermometer. As it turns out, each type of thermometer gave me a different reading. Each one was below 99ª, which I would categorize as a low-grade fever, but they weren’t close to the same reading at all. Here is what each thermometer read.

  • 96.4º digital in-ear
  • 98.7º digital oral
  • 97.7º iHealth PT3 infrared thermometer
iHealth PT3 Infrared No-Touch Forehead Thermometer REVIEW

While none of the other thermometers were able to confirm the reading I got with the PT3, I’m also not sure that it was a fair comparison since they all take temperatures in different places of the body and in different ways. 


The iHealth PT3 Infrared No-Touch Forehead Thermometer quickly became my favorite thermometer option available. It’s inexpensive and gives you a near stealth way to take someone’s temperature. It’s ideal for those who are very ill — young or old — so you don’t disturb them while they are resting. There are lots of newer technologies that are helping people and many different opportunities to track health data through apps, but the iHealth thermometer keeps things simple by just providing a clear, digital number on its LED screen. I can recommend this for any type of user. 

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