Engineering meets aesthetics
Castrads and Heat Geek share a core belief: heating systems should be efficient, well-built, and beautiful. That’s why we partnered to bring Castrads’ cast iron radiators into more of our heat pump installs across the UK.
It’s not just about looks. It’s about performance, comfort, and lifetime value.
What the partnership delivers
We design heat pump systems to work at low flow temperatures. That means every component, including the emitters, has to be correctly sized and specified. Castrads radiators are ideal because:
- They hold more water than typical radiators
- They’re perfectly suited to low-temperature systems
- They offer long-term durability and a timeless aesthetic
In short, they align with everything Heat Geek stands for.
Why Castrads and Heat Geek makes sense
Our Design Consultation process already includes precise emitter sizing. By collaborating with Castrads, we give customers:
- Access to high-quality radiators that perform at low temps
- Help choosing sizes and models that suit their home and system
- Confidence that everything will work, from day one
We’re not just bolting on cast iron for looks. We’re integrating it properly.
Benefits for homeowners
With this partnership, you get:
- Radiators that match your home’s style and system needs
- A fully integrated design, not a retrofit afterthought
- A heating system that performs quietly and efficiently for decades
Style doesn’t have to come at the expense of performance. With Castrads, you get both.
Benefits for installers
For those in the trade, this partnership shows that:
- Radiator choice matters — especially with low temp systems
- Cast iron works if you know how to size and design properly
- There’s a route to high-end, design-led installs that still perform
Installers in the Heat Geek network are trained to handle this properly. That’s why the partnership works.
Want beautiful heat pump heating?
You don’t have to pick between form and function. With Heat Geek and Castrads, you can have both.
- Check your address to get an instant estimate
- Book a Design Consultation
- Get trained to deliver systems that don’t compromise
FAQs
Do cast iron radiators work with heat pumps?
Yes. In fact, they’re well-suited to low-temperature systems if properly sized.
Why does Heat Geek work with Castrads?
Because their radiators are high quality, perform well, and match our design-first approach.
Are Castrads radiators included in every install?
Not always, but we often specify them when homeowners want a premium aesthetic.
Is this just about style?
No. It’s about delivering systems that look good and perform.







