The short version
- — Testo's 860i thermal imager and 605i hygro-thermometer link to a smartphone to calculate condensation points automatically.
- — The two-device system lists for roughly $558 combined, using a mobile app to replace dedicated hardware displays.
- — Real-time moisture data gives remodelers and builders clear evidence when diagnosing air leaks and insulation failures.
What happened
A diagnostic package combining an infrared imager with an ambient humidity sensor has hit the market, as reported by Fine Homebuilding. Manufacturer Testo designed the 860i thermal imager to communicate wirelessly with its 605i thermometer and hygrometer using a mobile phone application. Rather than packing dedicated screen hardware into the camera housing, the setup relies on the user's phone for processing, screen display, and file records.
When operated together through the software, the sensors compare interior surface temperatures against room air temperature and relative humidity. The application computes the local dew point in real time and highlights moisture hazards across building assemblies using a color spectrum from green to red. The thermal camera retails for $413, while the companion moisture and temperature meter sells for $145.
Why it matters to your shop
Diagnostic tools have historically forced tradespeople to choose between cheap infrared point thermometers that miss the big picture and five-figure building science equipment that rarely pays for itself on ordinary remodels. At a combined price tag under $600, accessible sensor pairing changes how small contractors handle moisture and comfort calls. When an owner complains of cold drafts or persistent dampness around a window opening, showing up with verifiable data eliminates guesswork. It allows an estimator to prove that cold framing is actively condensing air, turning an argumentative warranty visit into a documented, billable repair scope.
Automating the math also protects your crew from misinterpreting raw infrared pictures. A thermal image alone only demonstrates temperature variation; it does not tell you if that surface will sweat or foster mold under normal living conditions. Incorporating ambient humidity safeguards a contractor against making expensive teardowns based on false alarms, or worse, closing up an envelope that is on the verge of rot. As residential energy standards tighten and continuous insulation details become standard practice, field testing your own framing connections and air seals before drywall goes up prevents catastrophic warranty claims down the road.
What a CAA member does about it
A professional contractor never diagnoses an envelope failure on a hunch or leaves a homeowner wondering why a wall feels clammy. Invest in reliable diagnostic instruments, verify surface conditions against actual atmospheric data, and attach clear digital readouts directly to your change orders and completion sign-offs. Transparent proof protects your margin and builds immediate trust with clients who demand accountability. Bringing that level of measurable precision to every jobsite is what sets true craftsmen apart, and joining the Craftsmen Association of America shows your market that your business stands behind every claim it makes.
This brief is prepared for CAA members to help you run a smarter, stronger trade business. Dates and figures reflect the information available at time of publication.