EDTM identified the WP4501 Window Energy Profiler as new for 2025 and as the replacement for its WP4500. Its product literature describes in-frame testing of operable windows, with ultraviolet, visible-light and near-infrared measurements.
The manual also lists estimated solar heat gain coefficient and total solar energy rejection values. It places important limits on those estimates: they are intended for reflective substrates, including traditional low-emissivity coatings and some reflective films, rather than materials that primarily absorb solar energy.
Another distinction is scale. The readings are centre-of-glass values and exclude the frame, so they are not directly equivalent to whole-window ratings.
This is a historical product-update brief anchored to EDTM’s explicit 2025 designation. The source does not give an exact announcement day, and TintNews has not independently evaluated the instrument.
Sources & reporting notes
- Field service tools: WP4501 new for 2025 EDTMOnly announcement year established.
- WP4501 manual, version 18 EDTMManual release date not established; not used as product launch date.
This article is an original, AI-assisted summary of the sources above. It does not claim firsthand reporting or independent product testing. Our editorial standards · Corrections policy