
Hear It Before You Buy It – The Virtual Sound Experience for Heat Pumps.
Heat pumps make noise – a common purchase concern. Vaillant created the Soundbox to address it. Built by Bright IT as a high-performance, multi-language PWA.
About Vaillant
Vaillant is one of Europe’s leading manufacturers of heating, cooling, and ventilation technology. With over 145 years of innovation, the German company develops sustainable and energy-efficient solutions for residential and commercial use worldwide. Its heat pump product line is at the centre of the portfolio – and an increasingly important building block of Europe’s transition to sustainable heating.
Germany
Heating, cooling & ventilation
The App in Numbers
Technical headline figures for the Vaillant Soundbox.
20+
heat pump product families covered – each with approximately 6 model variants selectable in the simulator.
< 2 sec.
app load time – a significant improvement over the predecessor tool which regularly lost users before the experience even started.
Multi‑language
The Soundbox supports multiple languages and can be independently configured by local sales organisations for their market.
Offline‑ready
As a Progressive Web App, the Soundbox works without an internet connection – ideal for use during in-person customer conversations.
Why the Soundbox Exists – and What It Does
Three chapters: the purchase concern, the app itself, and what Bright IT specifically contributed.

The Problem: Heat Pump Noise as a Purchase Barrier
Heat pumps are the future of home heating – but their acceptance suffers from a simple fact: they produce operational noise, and prospective buyers cannot form an accurate picture of it before purchase. This created concerns rooted not in fact but in uncertainty. Vaillant wanted to dissolve that uncertainty – with a digital tool that makes the real sound of different models at different distances experienceable before a purchasing decision is made.
What Bright IT Technically Delivered
Five core contributions to the Vaillant Soundbox – all on the implementation side.
React Frontend Development
Complete development of the web app in React – from architecture to production readiness, optimised for speed, reliability, and a frictionless user experience.
Performance Optimisation
Critical optimisation of app load time to under 2 seconds – a decisive factor, since the predecessor tool was too slow to retain users before the experience began.
Multi-Language Implementation
Technical implementation of multi-language support, enabling the Soundbox to be available in the local language across Vaillant’s various markets.
Offline Capability
Implementation as a Progressive Web App with offline support – the app works without an internet connection, making it ideal for use during in-person customer visits.
Configuration Tool for Sales Organisations
Development of a configuration tool enabling local Vaillant sales organisations to independently customise the app for their market – without developer involvement.
Collaboration with Bejond
Close collaboration with Bejond as the leading project partner – Bright IT delivered the technical implementation, Bejond led the concept and project management.
Related Expertise
The capabilities behind our work with HDI Global – available for your project.
A Digital Experience That Solves a Real Purchase Barrier.
Sometimes the most valuable digital investment is not a website or a shop, but a precisely crafted tool that addresses a concrete purchase barrier. If you have a problem like this – talk to us.



