Thermogreen AG: 217 leads a month, with no in-house marketing team
What the same client looks like two years later
Thermogreen AG · Building technology · 1 February 2026
Leads per month
Average across all channels
Organic clicks
December 2025 compared with January 2026
Marketing contacts
Database built for remarketing and lookalike audiences
The challenge
The display campaign worked. That created the more difficult question: what happens next.
Thermogreen had no in-house marketing team and no intention of building one. What they wanted was someone who keeps the campaigns running, watches the tracking, and brings ideas, without the overhead that usually arrives with an agency. In parallel, a second audience had to be opened up: architects, hoteliers and planners who specify conservatories for their own projects.
What we did
Ongoing support, deliberately lightweight. Thermogreen sends a message with a request. We analyse it, recommend, and implement. Monthly billing, quarterly review of campaign performance. No thirty-page strategy document, no weekly standing meeting with ten people.
The work itself covers the full Google Ads structure (search campaigns for people ready to buy, display for awareness, remarketing, and Customer Match built from the existing CRM lists), the connection between HubSpot and Brevo, and the B2B lead generation for the second audience.
What came out of it
An average of 217 leads per month across all channels. Organic clicks rose from 549 in December to 733 in January, an increase of 33%. The contact database has grown to over 14'500 records, which is what makes lookalike audiences and remarketing possible at all.
The part that does not show up in a metric: Thermogreen has a partner who thinks along, without the complexity.
"What I value most about working with digital M. is that it is simply straightforward. I write to Janick, and things happen. No overhead, no long meetings. Just a partner who understands what we need."
Nando von Niederhäusern, Head of Marketing, Thermogreen AG
Translated from German.
Services used
The full case study is also published in German: /kunden/thermogreen-marketing-support/
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