Tecalor heat pump interface showing temperature performance graph, with mobile screen displaying heat source options (water, earth, air), and performance metrics at different temperatures from +20°C to -20°C

The Brief

Client

My Role & Contributions

As Product Designer, my responsibilities encompassed:

Design and Problem-Solving:

  • Developed user flows and wireframes based on validated research.
  • Made critical decisions on organizational principles, advocating for a user-centric approach.
  • Demonstrated how integrating projects could simplify the user experience and improve feature utilization.

Challenges Overcome:

  • Navigated shifting business priorities
  • Facilitated stakeholder feedback sessions, ensuring everyone's perspectives were considered.
  • Presented design & design processes from start to end of project to leadership, influencing key decisions.

The Before

The main challenge was to create a distinct visual identity for Tecalor while maintaining the efficiency and consistency benefits of sharing a design system with Stiebel Eltron. We needed to ensure that both brands could maintain their unique market positions while sharing core components and patterns.

Additionally, we needed to optimize the brand for digital products while ensuring accessibility and maintaining visual appeal. This required careful consideration of color contrast, typography, and interactive elements.

Tecalor brand assets showing color palette with green tones and interface iconsTecalor's e-commerce interface showing product return forms and order management

The Brand Refresh

Exploration axis

Design exploration grid showing different brand attributes: Creative, Trustworthy, Subtle Green, Bold Green, Lean on, Engaging, Subtle Type, and Bold Type with descriptions for each approach

Systematic colors building

To enhance the brand's digital experience, I create scalable, systematic contrast steps color ramps for design team to leverage brand elements. This gives structure to the colors for scalability and assist clients converting from print style guide.

Systematic color building strategy showing color ramps with contrast steps for primary, secondary and neutral colors with accessibility indicators for white and black text

Product Exploration

The exploration process involved developing foundational concepts and testing their adaptability across the entire system. Initial design directions provided a starting point, but translating them into a cohesive experience required deeper iteration. Rather than applying surface-level changes, the focus was on refining and expanding the design language to ensure consistency and scalability across all touchpoints.

Tecalor WPL 07 ACS Classic Plus heat pump product page showing a residential installation with the outdoor unit, pricing at 7.756 €, and multiple power options from 3.20 kW to 7.80 kW
Tecalor design system color palette showing primary green and dark color combinations with interface components
Collection of Tecalor interface components showing product catalog, contact forms, and information sections with green accent colors

Systemizing The Refresh

Integration

To maintain harmony across the system, work was shared regularly to assess balance and cohesion. The design continuously evolved through iterative testing within the product UI, with ongoing collaboration and feedback from product teams.

Design system documentation showing button component anatomy and form interface evolution

Updating The System

Once the system was fully aligned, core libraries were refactored, and changes were systematically migrated with the help of the Token Studio plugin. Alongside refreshed components, the new library introduced foundational elements, including illustrations, icons, color, typography, and spacing, ensuring consistency and scalability.

Updated Tecalor product interface showing modernized search, navigation, and product details layout
Tecalor design system components showing mobile UI, typography, color palette, product images, and icon sets in green brand colors with interface elements and illustrations

Reflection & Learnings

Key Lessons Learned:

This project underscored the significance of a user-centered design approach and the impact of iterative development driven by real user feedback. It emphasized the need to align business goals with user needs to create a product that offers meaningful value.

For Homeowners and Customers:

  • A more intuitive and visually cohesive website, making it easier to explore and compare heating solutions.
  • Improved access to product details, cost breakdowns, and financing options for informed decision-making.
  • A seamless e-commerce experience, simplifying the process of purchasing energy-efficient heating systems.

For Installers and Industry Professionals:

  • Streamlined navigation for quicker access to technical specifications and installation resources.
  • Enhanced clarity in product categorization, reducing time spent searching for the right solutions.
  • A modernized design system that ensures consistency across all digital touchpoints, improving overall usability.