FRONNT Builds Engineering Confidence in Complex HVAC Projects with Hysopt
“Hysopt already helped us identify pumps that were either too small or oversized — those are mistakes you really want to catch early.”
Jarne Rebry
Engineer, Climawest
FRONNT is an engineering-driven organisation working on increasingly complex HVAC and energy projects, including geothermal systems and large-scale heat pump installations. As project complexity grows, so does the need for reliable hydraulic calculations and system validation.
When ABN Klimatisatie, Bovema and Climawest, all part of the FRONNT group, started using Hysopt, the teams knew it would not be a simple, plug-and-play exercise. Several of their ongoing projects involved geothermal boreholes and changeover systems — scenarios that require careful modelling and engineering judgement. As Jarne Rebry, Engineer at Climawest (part of the FRONNTrunners) explains, they deliberately jumped into real projects rather than simplified examples, even though that made the learning curve steeper.
Despite that complexity, the team quickly began to see value. With support from Hysopt’s Expert Centre, they started using the software to calculate pipe diameters, pressure losses and pump head — tasks that are critical to making systems work in practice, not just on paper.
“It can seem complex at the start, but once you get the hang of it, you realise it can really help us build better hydraulic system designs.”
Jarne Rebry
Engineer, Climawest
Tackling real-world system complexity
FRONNT’s projects rarely follow standard HVAC templates. Several ongoing designs involve geothermal boreholes combined with heating and cooling operation, which makes system modelling more demanding. According to Jarne: “Simulating these systems is not always straightforward, but it reflects the reality of our work.”
Rather than simplifying the problem, the team uses Hysopt to break complex systems down into hydraulically sound structures. Even when certain concepts require abstraction, the focus remains on whether the system can be installed, balanced and operated correctly on site.
This approach allows FRONNT to use Hysopt not just as a simulation tool, but as an engineering check — validating whether a proposed design will actually work once built.
Improving sizing, selection and system confidence
One of the first clear benefits for FRONNT came from component sizing. Engineers used Hysopt to determine correct pipe diameters, calculate pressure drops and select pumps within their optimal operating range. Jarne notes that the team has already encountered situations where an initial pump selection turned out to be too small — and in other cases, unnecessarily large.
By identifying these issues early, Hysopt helps avoid costly corrections later in the project. The software supports a more data-driven design process, where hydraulic behaviour is checked before decisions are finalised.
For FRONNT, this has reinforced confidence in their designs, especially on projects where multiple heat pumps, changeover systems and different terminal units interact in complex ways.
Learning by doing, supported by expertise
Like many engineering teams, FRONNT finds that the real learning happens inside live projects. While training videos and documentation are useful, hands-on modelling — combined with direct support — accelerates understanding.
The team values the on-site guidance and project-based support from Hysopt’s experts, which helps translate software models into practical engineering decisions. As Zeno Swinnen, Internal Sales Engineer at ABN Klimatisatie, explains: “Once engineers use the tool more frequently, it becomes easier to build models from libraries and reach results faster.”
Over time, FRONNT expects Hysopt to become a more standard part of their workflow — reducing engineering effort while maintaining accuracy. As Jarne puts it: “Although the first steps were challenging, the software clearly has the potential to support better-performing systems and more robust hydraulic designs.”
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