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BLACK+DECKER Thermal Leak Detector (TLD100)

4.4 4.4 out of 5 stars 4,182 ratings

Currently unavailable.
We don't know when or if this item will be back in stock.
Brand BLACK+DECKER
Style modern
Power Source Battery Powered
Color Black
Item Weight 0.65 Pounds
Alarm Visual
Operating Humidity 50 percent
Global Trade Identification Number 00885911106337
Number of Items 1
Manufacturer Black & Decker

About this item

  • SAVE ON ENERGY COSTS – Track down power-draining drafts around the house to help reduce your heating and cooling bills and save up to 20%.
  • INFRARED SENSOR – Measures surface temperatures to find warm and cool spots. (Note: This leak detector should not be used to check the temperature of living beings.)
  • LED – Automatically changes to either blue or red for immediate leak identification. EASY-TO-READ DISPLAY – LCD screen displays temperature readings in Fahrenheit and Celsius. ERGONOMIC GRIP – Provides a comfortable, secure hold
  • 5-STEP GUIDE – Handy guide helps you fix basic energy leaks.
  • INCLUDES – TLD100 thermal leak detector, 5-step guide.

From the manufacturer

BLACK+DECKER Thermal Leak Detector (TLD100)

BLACK+DECKER Thermal Leak Detector (TLD100)

Save on your home’s heating and cooling costs by detecting and repairing leaks in locations like windows, walls, ductwork, drafty fireplaces, and more. A color-changing LED and easy-to-read display screen give you quick and intuitive feedback, while the ergonomic design provides a comfortable grip. A 5-step guide is included to help you fix simple leaks.

Easily detect energy leaks to lower your energy costs

Save on your heating and cooling bills by detecting hidden energy leaks around the house.

Save on your heating and cooling bills by detecting hidden energy leaks around the house.

Look for leaks in a variety of household locations

Pinpoint leaks around windows.

Pinpoint leaks around windows.

Uncover issues with your ductwork.

Uncover issues with your ductwork.

Inspect the ceiling insulation surrounding recessed lighting.

Inspect the ceiling insulation surrounding recessed lighting.

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Product information

Technical Details

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Warranty & Support

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Product Description

Product Description

IR sensor spots hidden energy leaks along walls, molding, ductwork & more. ENERGY STAR. Can save up to 20% off heating & cooling cost. Auto color change provides quick, intuitive feedback showing users where to caulk, insulate, etc. Heating and cooling accounts for about 50 percent of your energy usage, but the average house has enough leaks and drafts to equal a 1 sq. ft. hole. Cut down on wasteful spending with the help of the Thermal Leak Detector from Black & Decker.The TLD100 is an infrared sensor that finds these leaks along walls, molding, ductwork and more. Auto color change provides quick, intuitive feedback, showing users where to caulk, insulate, etc.

Amazon.com

The Black & Decker thermal leak detector helps you increase the efficiency of your home's insulation by finding leaky areas that can lead to higher heating and cooling bills. You'll instantly identify problem areas around drafty windows and doors, and uncover hidden leaks and insulation "soft spots" around your home. Check windows, ducts, and walls with the thermal reference light that indicates hot and cold spots. You can even use the detector to diagnose engine misfires or check your refrigerator and freezer settings.

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The TLD100 lets you identify weak spots that can lead to high energy bills. View larger.Easy-to-Read Color Coding and Screen
The thermal leak detector makes it easy to monitor your home's energy efficiency by finding areas that let heat out and cold air in. Simply set the detector's temperature tolerances to one, five, or 10 degrees and scan the light across the area you want to inspect. The light will change to red for warmer spots and blue for cooler spots to detect air leaks in both warm and cool weather. The detector also displays temperatures in either Fahrenheit or Celsius on the LCD screen. Check for drafts or leaks around your fireplace, recessed lighting, electrical outlets, along floor molding, or any place that may have improper seals, caulking, or seams that aren't immediately visible. An included booklet gives you tips and instructions on how to seal leaks and improve insulation.

Cut Energy Bills and Improve Your Home's Efficiency
Sealing the leaks and improving insulation in your home can help you save as much as 20 percent on your heating and cooling bills. An efficient, greener home will stay cooler in summer and warmer in winter, increasing its resale value.

Multiple Uses to Handle Uncommon Tasks
Use the thermal leak detector to check your refrigerator and freezer temperatures and efficiency. Diagnose engine problems related to overheating or coolant leaks to avoid costly repairs and mechanic bills down the road. The thermal leak detector can also check the operation of your HVAC system, so you can perform preventative maintenance as needed.

The Black & Decker thermal leak detector is covered by a two-year warranty.

What's in the Box
Thermal leak detector, five-step guide on how to insulate and seal your house

Sealing leaks and improving your home's insulation can help you save as much as 20 percent on energy bills.

Product guides and documents

Top Brand: BLACK+DECKER

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Important information

Bulb Voltage

9 volts


Customer reviews

4.4 out of 5 stars
4,182 global ratings

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Customers say

Customers find the product useful and accurate for detecting temperature changes. They find it simple to use and easy to identify air leaks around exterior doors. The device is considered a great value for the price, especially considering its affordability compared to thermal imaging cameras or systems.

AI-generated from the text of customer reviews

611 customers mention "Functionality"582 positive29 negative

Customers appreciate the product's functionality. They find it useful for detecting leaks and finding potential sources of gas or smoke. The device is described as accurate and a good addition to a tester box. It works well on windows and walls, providing useful information.

"...The bottom line is that for home use and price, this is a very good meter...." Read more

"...A very useful tool to add to the tool box. It should do wonders to help make your home more energy efficient...." Read more

"For the price, this leak detector is an excellent tool for a DIYer looking to improve insulation in their house...." Read more

"...bills and finding out easily where those leaks are, this is a great little device" Read more

326 customers mention "Temperature detection"268 positive58 negative

Customers appreciate the temperature detection feature of the product. It helps them identify and solve cold spots in their walls. The display shows accurate temperature readings, with a switch that allows you to set a temperature threshold. They have not experienced wide swings of temperature with this device and can verify its readings with other devices.

"...a fairly accurate reading for what it is being used for, a temperature comparison tool...." Read more

"...detector is an excellent tool for a DIYer looking to improve insulation in their house. The device is basically an infrared thermometer...." Read more

"...Already we're seeing the heat cycle on less often and the house feels much less drafty...." Read more

"...There is a switch that allows you to choose your temperature threshold...." Read more

237 customers mention "Ease of use"230 positive7 negative

Customers find the product easy to use and accurate. They say it's simple to use, with a large spotlight that is easy to see and direct. The concept behind it is simple and well-done, and the digital readout is easy to read.

"...The concept behind it is very simple and very well done...." Read more

"...I found it easy to use right out of the box...." Read more

"...This detector is very easy to use. When you turn it on, whatever you're pointing it at is the reference point and that is the reference temperature...." Read more

"...As other reviews have stated, using the TLD100 is really simple...." Read more

220 customers mention "Leak detection"180 positive40 negative

Customers find the leak detection feature useful. They say it helps identify air leaks around exterior doors and windows, visually verify the leaks, and pinpoint their locations. It may also indicate power usage to identify home power leaks. The thermal leak detector is awesome and very useful in detecting cold air leaks in their house.

"...It picked up readings from the air conditioning floor vents (53 degrees) and the temperature drop on the floor the vents ran under...." Read more

"...Nothing fancy about it, and it'll help you quickly visually verify the leaks and their locations." Read more

"...The first day we pinpointed several window and door leaks and fixed them...." Read more

"...Works great finding leaks around exterior doors. It can also help find where wall insulation may be lacking (like beneath a window)...." Read more

199 customers mention "Value for money"196 positive3 negative

Customers find the gas smoke fire alarm offers good value for money. It's easy to use and much cheaper than thermal imaging cameras or systems. The detector helps reduce utility bills and provides good accuracy for the price.

"...For my home use, this is a perfect fit for under $30." Read more

"...that much more cozy, so I'd say that alone has made it well worth the purchase price...." Read more

"...in changes from 2-15 degrees in each window and further reduced our heating cost. For the price, this item is a great value...." Read more

"...Overall, in my opinion, a great buy at a great price for the average user...." Read more

134 customers mention "Accuracy"104 positive30 negative

Customers appreciate the product's accuracy. They find it easy to use and provide accurate readings for their needs. The detector provides quick feedback about relative temperature, enabling quick scanning. It allows you to take a baseline reading and set variance range. The colored spot makes it really quick and easy to scan for hot and cold areas.

"...It makes the process much simpler and faster...." Read more

"...It gives a fairly accurate reading for what it is being used for, a temperature comparison tool...." Read more

"...The colored spot makes it really quick and easy to scan for hot and cold areas, since you don't need to pay close attention to the actual..." Read more

"...The poll rate is a little slow and the accuracy is a little questionable but it gives you a good idea of what is going on...." Read more

129 customers mention "Color change"117 positive12 negative

Customers like the color change feature of the product. It shows the temperature in a small LED window. The color change makes it easy to scan for hot and cold areas. The digital numerical temperature readout displays information of 1 degree, 5 degrees, or 10 degrees for the three color spot light.

"I've used thermal guns before but this 3 color light indicator is way cool. It makes checking temp delta's very quick...." Read more

"...The cool thing about this detector is that it changes from the base color of green, it shines at the target, to blue (cooler) to red (warmer) as the..." Read more

"...leak detector is that it compares temperatures, and lights up the wall in different colors based on the comparison...." Read more

"...It shows the temperature in a little LED window...." Read more

60 customers mention "Fun to use"60 positive0 negative

Customers find the temperature detector fun to use. They say it's a nice tool to play with outside on a hot or cool day, and it's fun for cats to chase the light. It's also a great demonstration tool when quoting jobs and a nice toy for the little ones.

"...in finding and fixing thermal leaks, this thing is a heck of a lot of fun just to play with...." Read more

"...Man, what fun to aim and read this dandy little hand-held temperature detector...." Read more

"...detector gives almost instantaneous readings, and is fun to use when your spouse complains that a particular room is too hot or too cold...." Read more

"...It is effortless and actually kind of fun to use. Even my kids were kind of intrigued trying it...." Read more

wanted to like it
3 out of 5 stars
wanted to like it
I'd wanted this for so long and then it was a disappointment. Maybe my needs weren't a good fit for it because it seems to be effective for others. When I used it on windows where I could feel there was some cold air coming in, it would be a few degrees lower, as you'd expect. So didn't tell me much. And the number jumped around too much to be finely accurate. The cone in which the rays or whatever shoot out probably makes a huge difference; the aiming device should help you keep that consistent.The final straw before I returned it was when I could feel gusts of cold air in my basement coming out from around a wooden panel board that wasn't doing jack, and this thing was acting exactly like it did every other time, showing a degree or two colder. And I'm not sure how it got its reference value. I read the instructions, but as soon as you turn it on, it grabs a reference value, so I guess the lesson is to be aiming it at the right spot when you turn it on.
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Top reviews from the United States

  • Reviewed in the United States on April 25, 2010
    I've used thermal guns before but this 3 color light indicator is way cool. It makes checking temp delta's very quick. With the old gun (with laser pointer), it was, point at the area you wanted to test and then look at the meter, repoint the meter to a new location and look at the meter again. With this TLD100, it was just move the light around the area you are checking and the only time you have to actually look at the meter is when the color changes. It completely eliminates this looking back and forth at the target, then the meter, then the target, then the meter,...

    A comparison would be the difference between using a box end wrench or a rachet wrench to remove bolts. It makes the process much simpler and faster.

    I bought my unit at the wrong time of year when the outside temp was, at maximum, only 30 degrees different then the inside temp so even though I found some leaks, they were minor. My house is about 40 years old and since I bought it a few years ago, I installed storm doors and had added insulation to the attic. All the windows and doors are relatively new and from what I can tell, this house is relatively tight. Even though I didn't find any major problems, it's gives a certain peace of mind to know that everything is okay. This summer when the temps hit the 90's, I'll retest.

    The bottom line is that for home use and price, this is a very good meter. As some posters have pointed out, there are more accurate meters available and IR camera's that have far more versitility, but for what they cost, it would be much cheaper to not fix your leaks and just pay for the extra energy costs.

    Addendum:

    I've owned this product for a while now. When I first got it, it took under a minute to figure out how to use it. The concept behind it is very simple and very well done. At first, to my chagrin, my house seemed very tight and I found no hot or cold spots of any significance. I almost felt like I wasted my money, but there is a certain amount of consolation knowing that everything is in order.

    Recently, I bought a whole house fan, but my attic access was too small to get it into the attic, so I enlarged the opening. I knew that I would have to insulate the cover to the new opening, but before I got around to it I used this product to see what to expect. It was a warm day and I had the air on at about 77 degrees. When I pointed the meter at the new attic cover, it was reading almost 100 degrees. What that meant was that I had a radiating surface of about 7 square feet at 23 degrees over the interior of the house temperature. Looking toward the future when the winter would come, I could have a temperature differential of over 100 degrees during very cold days. In the summer when the temperature gets into the mid 90's or more, my attic temp exceeds 140 degrees. This would give me a temperature differential of over 65 degrees.

    I figure that this knowledge alone would pay for the meter in short order.

    Anyway, I really like having this meter and contrary to what some posters have said about it's accuracy, it's the delta (temp difference) that is the most important thing to be concerned about in this case.
    12 people found this helpful
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  • Reviewed in the United States on August 4, 2012
    Have only used this thermal detector for an hour and I love it!
    I found it easy to use right out of the box.
    Reading the instructions, which were short and to the point, helped with a few problems I was having.
    It gives a fairly accurate reading for what it is being used for, a temperature comparison tool.
    Taking a base reading such as an interior wall, and then scanning the outside walls and ceiling for temperature hot spots was very informative and interesting.
    I used +/- 5 degrees to start with and found several ceiling can lights that were 8-10 degrees warmer than the ceiling around it. It was a 92 degree day outside.
    The cool thing about this detector is that it changes from the base color of green, it shines at the target, to blue (cooler) to red (warmer) as the temperature changes from the set variance.
    Just move it around and watch the temperature change. It picked up readings from the air conditioning floor vents (53 degrees) and the temperature drop on the floor the vents ran under.
    Just try it around your outside interior wall outlets and switch plates.
    A very useful tool to add to the tool box. It should do wonders to help make your home more energy efficient.
    There are better and more function driven detectors out there but at a price! For my home use, this is a perfect fit for under $30.
    One person found this helpful
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  • Reviewed in the United States on December 20, 2013
    For the price, this leak detector is an excellent tool for a DIYer looking to improve insulation in their house.

    The device is basically an infrared thermometer. The difference with the leak detector is that it compares temperatures, and lights up the wall in different colors based on the comparison.

    Here's how it works:
    1 - point the detector at a wall that you know is insulated, and turn on the detector
    2- upon turning on, the detector measures the temperature of the wall, and remembers that temperature
    3- now you move around the room/house, pointing at different parts of the wall, near windows, doors, etc.
    4- the detector constantly reads temperature and compares to that initial wall reading
    5- A green colored spot is projected onto the wall where you are pointing the detector.... if the temperature differs by a certain amount, the spot turns blue (colder) or red (hotter).
    6- a 3-position switch lets you decide whether you want the spot to change color for 1 degree F difference, 5 degrees F difference, or 10 degrees F.

    This detector did not just point out the obvious problem spots (like door jams, near windows). You really don't need a detector to figure out those spots. This detector highlighted large differences on the *same wall,* where it turned out that insulation was lacking or had fallen off.

    I deducted one star for the accuracy of the temperature reading. I have another infrared thermometer which I know to be accurate, so I compared readings. This leak detector was a few degrees off from the other detector. That said, this leak detector still calculated the correct difference in temperature, which is its main functionality. If you want a very accurate temperature reading, get a dedicated thermometer.

    Others have commented on the box size - it seemed pretty appropriately packaged to me. The detector is a rather odd shape, so the box had a fair amount of empty spaces. Nevertheless, the device is packaged well.

    Build quality is fine. The whole device is plastic, with a battery door that pops open in the grip. For the price, I have zero complaints with build quality.

    In summary, this device is handy and serves its intended purpose very well.
    6 people found this helpful
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Top reviews from other countries

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  • Eugene
    5.0 out of 5 stars it does what expected, good for the price
    Reviewed in Canada on December 11, 2022
    I was worried it would not be enough to detect the heat leaks ... nope, works great! Display with actual temperature displayed is very useful, the light coloring - not so much.
  • Danny Clow
    5.0 out of 5 stars Easy to use
    Reviewed in the United Kingdom on December 24, 2024
    Does the job. Basically point it at a surface to register a temperature in that room and turn on. Then move light around room and it will show lower or higher temperatures than the one you first you set.
    For example it shows my loft insulation must be missing in some parts of the ceiling as green light turns blue 🥶
    Some surrounding windows are colder than others.. must have a draught. All external walls register colder
  • Aldo Martinelli
    5.0 out of 5 stars Ottimo.
    Reviewed in Italy on November 21, 2024
    Ottimo.
  • JOSE-MANUEL
    5.0 out of 5 stars Bien
    Reviewed in Spain on March 21, 2023
    Muy fácil de usar, apuntar y disparar.
    Parece fiable, y con mirar el color del foco ya se sabe si la temperatura es inferior o superior, sin tener que mirar la pantalla.
  • Luis T
    4.0 out of 5 stars Buen producto a precio conveniente
    Reviewed in Mexico on March 18, 2020
    Producto funcional y conveniente para medir temperatura.