Our Story
We’ve all experienced it, sitting in a cold room during winter, layering up just to stay warm.
In the Netherlands, this is more common than it should be. Many living spaces—especially rental properties—still lack proper insulation, making everyday life less comfortable and more expensive.
We are a team of founders based in the Netherlands, united by a clear mission: to make homes warmer, more energy-efficient, and more sustainable.
HeatLockr was created to tackle one of the most overlooked problems in housing—heat loss due to poor insulation—by offering simple, accessible solutions that anyone can use.
Who We Are
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A large share of Dutch housing remains inefficiently insulated.
For example, 1 in 5 students still live in housing with single-glazed windows, allowing significant heat to escape. But the issue goes far beyond student housing—many rental and owned homes face similar inefficiencies.
This leads to:
Cold and uncomfortable living spaces
High energy costs
Unnecessary energy waste and CO₂ emissions
The average Dutch household uses around 1,300 m³ of natural gas per year—that’s enough to fill 8,000 bathtubs. A substantial portion of this energy is lost due to inadequate insulation.
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HeatLockr provides smart, non-permanent insulation solutions designed for modern living.
We offer both:
Personalized insulation kits, tailored to your space
Individual products, allowing targeted improvements where needed
Through our platform, you can:
Enter your room or property details
Receive tailored recommendations
Install everything yourself—no drilling, no damage, no hassle
Our core solutions include:
Window Insulation Film – Reduces heat loss through glass
Aero Strip – Seals gaps around windows and doors to block drafts
Radiator Reflector – Reflects heat back into the room instead of losing it through walls
All products are designed to be efficient, easy to use, and long-lasting.
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No landlord permission needed – Fully non-permanent and damage-free
Cost-efficient – Reduce heating bills with minimal investment
Flexible – Choose between full kits or individual products
Sustainable – Reduce energy waste and emissions
Reusable – Designed to move with you
We are among the first in the Netherlands to offer tailored, non-permanent insulation solutions that combine convenience, efficiency, and sustainability.
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HeatLockr is built for:
Students seeking affordable and temporary solutions
Tenants who want comfort without altering their rental space
Homeowners looking for efficient upgrades without renovations
Landlords aiming to improve property performance and tenant satisfaction
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HeatLockr aligns with UN Sustainable Development Goals (SDGs) by:
Reducing energy waste and emissions.
Minimizing waste through reusable, customized kits.
Helping make student housing more livable and energy-efficient.
Every kit installed means:
Lower heating bills
Fewer CO₂ emissions
A warmer, more livable student room
Join Us
Whether you're improving a single room or upgrading an entire property, HeatLockr gives you the tools to take control of your energy use.
Stay warm. Save energy. Live better.
HeatLockr – Insulation Made Simple