Hearth

The problem

Home owners put off insulating because quotes are confusing and expensive, while installers waste days driving between single jobs.

The solution

Hearth signs up a whole street at once, negotiates one price and schedules the installer to do every house in the same week.

Who it's for

Owners of houses built before 1990.

Market

Bottom-up: about 120,000 customers like this in Belgium and nearby, worth roughly $280 million a year at our prices.

Competition and edge

Headline metric

2,900 active users, growing 21% a month

The team

Lotte knows the customer and has sold to them before; Bram has built this kind of system at scale. We have worked side by side since before Hearth had a name.

Worked together

More than 3 years

Hiring

A senior engineer and our first customer-success hire.

About the founder

Lotte Peeters

Founder & CEO · Ghent, Belgium · 6 years of experience

Lotte organised neighbourhood energy schemes for a city council. Started Hearth in 2025 and works on it full-time from Ghent.

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