Building a Sustainable Future
Know more about our thermal transmittance solutions for smarter, energy-efficient buildings
Accurate U-value assessments empower informed decisions on renovation
Our calibrated, plug-and-play UVAL Wireless system provide reliable data for clear thermal efficiency evaluations. It offers accurate, non-invasive assessments of thermal transmittance in various building envelopes, including walls, roofs, floors, and windows.

Stricter Legislations on Building Energy Ratings in the UK
With UK legislation requiring all commercial properties to achieve a minimum EPC rating of B by 2030, property owners are under increasing pressure to comply. According to the 2022 data from the Department for Levelling Up, Housing and Communities, 70% of office spaces in London currently have an EPC rating below B.

2023
All commercial buildings are required to achieve a minimum EPC E-Rating to be lawfully let

2027
All commercial buildings are required to achieve a minimum EPC C-Rating to be lawfully let

2030
All commercial buildings are required to achieve a minimum EPC B-Rating to be lawfully let
Achieving a B rating or higher will require significant upgrades to building elements and heating systems.
UVAL Wireless provides precise U-Value and R-Value measurements
With our UVAL Wireless system, you can minimize unnecessary upgrades, accurately assess ROI, and make more cost-effective compliance investments.
Our measurement kit provides remote, non-invasive, and accurate U-Value, R-Value, and Lambda-Value data for clear, time-efficient thermal efficiency evaluations.
Product Highlights
ISO-Conforming
All devices are ISO-conforming, with ISO 9869 standard measurements
Swiss-Patented
Our solutions, developed in Switzerland, are trusted by industries globally
Plug & Play
Sensor calibration data preloaded onto logger for quick measurements
Reliable & Precise
Our kits enable accurate thermal measurements and efficiency assessments
Remote
UVAL Wireless is the world’s only modular, remote U-Value system
Non-Invasive
Receive precise thermal measurements without the need for intrusive methods
Product Details
Features
greenteg's wireless U-Value, R-Value, and Lambda-Value measurement solution - capable of scaling to 5 U-Value measurement points.
- Accurate U-Value and R-Value Measurements
- Wireless measurement set-up
- Remote Measurement Access
- Up to 5 Measurement Points at Once
- Quick and Easy Installation
- Measurement of Surface, Room and Outdoor Temperatures
- ISO 9869 and ASTM 31046/C1155 verifying software
Remote Measurement Access allows you to view your measurements from anywhere in the world - meaning you don't have to attend the measurement site itself.
Disclaimer: This product uses a sub-GHz Communication link at 868 MH. This product can therefore only be used in Europe, and most of Africa & the Middle East
Inclusions
1 Base Station
2 Nodes (may order more)
1 Inner Wall Heat Flux Sensor
1 Outer Wall Surface Sensor
2 Ambient Temperature Sensors
Accessories:
2 Ambient Sensor Mounting Clips
1 Roll of Double-Sided Adhesive Tape
1 Bag of Double-Sided Adhesive Water
Repellent Strips
1 Pair of Scissors
Instructions and Manual:
1 Calibration sheet
1 Instruction manual
Software will be provided via password-protected download link (compatible with Windows OS only).