A heat map shows the wireless coverage in an area by using color, where good wireless coverage will usually be visualized as green, while weak to no coverage will be visualized as red.
Heatmapper tools for Wi-Fi usually start with a blueprint- You will get the best and most precise results if you have blueprints for your home available.
Heatmappers and speed tests are complementing tools that together give a better overview.
If you take your time and do it right, a heat map and a speed test can tell you where in the home signals are good and bad, as well as the speeds you can achieve where the signal is good or bad.
For more on how to complete a thorough test of a Wi-Fisolution, see Testing Wireless: Reality Check for Wi-Fi solutions.
We recommend these heatmappers:
NetSpot http://www.netspotapp.com/ is paid software that is available for Mac OS X, Windows, Android og iOS.
The heatmapper programs are quite intuitive, you just need to be connected to your wireless network and follow the instructions for the program you have chosen.
If you do not have blueprints for the area you are measuring, try drawing the rooms yourself.
It is important to make sure measurements are made close to each other so that the measuring ranges overlap.
Article by Jan Pedro Tumusok and Jorunn D. Newth