In the world of industrial biomass boilers, Ranheat takes a straightforward approach: design every component with replacement in mind.
Over 35 years of experience has taught us that in high-temperature combustion systems, exposure to heat and flue gases will, eventually, wear on materials. Not through error or poor design—simply through time, temperature, and chemistry. That’s not a problem if your system is built to be repaired.
That’s why every part of a Ranheat system is designed to be cost-effective to replace. No component should ever become a financial dead-end. Our combustion chambers, retorts, grates, and ash screws are built to be modular, swappable, and serviceable—because fire always wins eventually, whether it takes five, ten, or twenty years.
Ranheat biomass boilers are noticeably larger and heavier than the competition. That’s deliberate. Thicker steel means longer life. Higher water content means more stable combustion and improved temperature control. And our combustion systems are built in modular sections that can be swapped out with minimal site work.
We don’t hide wear. We plan for it.
Fire chambers, retorts, and moving grates on a Ranheat boiler are all replaceable. Most can be serviced and swapped within 1–2 days, depending on site access. That’s unheard of in many systems where the combustion chamber is welded into the pressure vessel—making serious repair work almost impossible without major disruption or total replacement.
Yes, our capital cost is often higher than other UK manufacturers of industrial biomass boilers—and significantly higher than systems designed for commercial or light-duty use. But over a 20–30 year lifecycle? The difference in downtime, labour cost, and long-term reliability more than pays for itself.
Every Ranheat boiler must be serviced by a Ranheat technician at least once per year—often more. That’s not a sales tactic. It’s a reality of combusting industrial wood waste. From day one, we design with the full lifecycle in mind:
Our foundry partners and suppliers produce custom alloy blends that balance cost, endurance, and repairability. In high-wear areas like grates and retorts, we use alloys enhanced with chromium, molybdenum, and tungsten—but only where it’s worth it.
We don’t just chase the hardest or most expensive material—we work out whether the juice is worth the squeeze.
The real cost of a biomass boiler isn’t just in the installation—it’s in what happens ten years down the line.
With Ranheat, you’re never told “just buy a new one.” Even if a boiler’s pressure vessel eventually reaches end-of-life, it can be re-tubed, repaired, and then only replaced. Combustion systems can be upgraded for higher throughput, different fuel types, or performance tuning.
Many boilers installed under the RHI scheme between 2010 and 2020 are now failing. In most cases, they simply weren’t built to run for 8,000+ hours per year. Ranheat systems were—and still are.
That’s what it means to build truly industrial.
You wouldn’t buy a car and expect to drive it forever on one set of tyres. You’d want tyres that are easy to change—and priced realistically.
That’s how we view parts like:
Many of these are not exotic. They’re just well thought out.
Our customers don’t want fairy tales. They want uptime. They want predictability. They want to know that if the ORC system they’re pairing with our boiler will last 20 years, their boiler won’t fall apart in ten.
That’s why we build systems that:
Fire always wins—but when you plan for it, so do you.
