Over the past few years there have been considerable breakthroughs in the market for thermal imagers including the fact that prices have dropped considerably. Even better, the ideal thermal imager for today’s building thermographer does not necessarily need to be “top-of-the-line” or “most expensive”. Whether you are a home performance contractor, weatherization crew member or energy auditor there are many fine choices that will certainly meet your needs. This paper will provide an overview of thermal imaging equipment for building applications. As you read this, know that The Snell Group is vendor-neutral and we do not sell equipment nor are we a subsidiary of any infrared camera manufacturer. As such, this paper is not going to recommend a specific brand or model of thermal imager. It will instead summarize which equipment specifications are important for you to consider and which ones maybe are not.