Why is your choice of HIU the key to low-carbon living?

Cost & Energy Efficiency

Think of your heating system like a delivery service.

• A HIU with high standby ‘keep warm’ volume is like a van that idles all day, burning fuel while waiting for its next job.
• A HIU with lower standby volume, like the vTherm˚e, is more like an electric bike ready when needed, but not wasting energy when it’s not.

Keeping excess water warm and circulating it unnecessarily is like paying to heat rooms no one ever enters. Multiply that across multiple sites and years, and the costs, both financial and carbon, add up fast.

Inevitably, this leads to the excess costs being passed onto the end-user by way of higher bills.

Lower Annual Volumes

As confirmed by the BESA 2023 test regime, the vTherm˚e Heat Interface Unit  annual water volumes are lower than the nearest competitor unit, topping the table in using significantly less water, even at high temperatures.

The vTherm˚e HIU ‘keep warm’ standby volume results at 70˚ C: 15.6m³/a (closest competitor unit 19 m³/a with other units above 20.6m³/a)

Although a difference of 5m³/a may not seem a huge amount, when this is multiplied by the number of heat interface units on a project, over a year and product lifetime, the water volumes and costs soon increase to huge proportions.

Breaking down the numbers:

• One project's heating system includes 1000 Heat Interface Units (HIUs).
• The vTherm˚e uses 5 cubic metres less standby water per HIU per year compared to the nearest competitor.
• Multiply that out: 1,000 HIUs x 5m3/pa = 5000m3 water annually.
• That’s 5 million litres of unnecessary water circulating through just one system, every single year.

The vTherm˚e is like filling a bath with just the right amount of water. The nearest competitor? Like overfilling it every time, wasting water, energy, and money.