Detached House with GP Practice

At Optiklimaat we provided a detached house with a GP practice with a sustainable heating solution using a Nibe F2120 heat pump. The property, with a floor area of 362 m², was previously heated by two Remeha Quinta boilers in cascade arrangement, each with a thermal output of 40 kW. Our goal was to make the house more sustainable and ready for a future-proof, energy-efficient heating installation.

Former situation: Remeha Quinta cascade setup

The original heating installation consisted of two Remeha Quinta boilers operating in parallel cascade arrangement. This setup offered:

• Flexible modulation: at low heat demand only one boiler ran, saving energy.
• Reliable back-up: if one boiler failed, the other could continue to operate the system independently.
• Sufficient capacity: the system could comfortably heat both the house and the GP practice.

Although the installation was reliable, it ran entirely on gas and offered limited potential for sustainability and energy savings.

Plan of approach

During the initial phase, we carried out a detailed assessment of the property to evaluate its potential for sustainability improvements. Our analysis showed that the building was reasonably well insulated. Based on a heat loss calculation, we determined how an “all-electric ready” system could be implemented.

Based on our findings, we advised the client to transition to a fully all-electric system while retaining one existing boiler. This boiler functions as:

• Back-up: for heating continuity.
• Legionella cycle: the tap water is heated above 60°C once a week to prevent legionella growth and ensure hygiene of the hot water system.

Technical setup of the Nibe F2120

The new installation was carefully designed to ensure optimal comfort and future-proofing.

• Filters: various filters protect the system against dirt and particles.
• Piping and delta-T control: pipe diameters are matched to the correct delta-T control for optimal efficiency.
• Buffer vessel: a buffer vessel has been installed, although not strictly necessary in the current situation, in preparation for future adjustments. This ensures sufficient system volume is always available.
• Outdoor unit: the unit is positioned so the evaporator can draw sufficient air and is placed at the correct height to prevent freezing.
• Insulation and finish: the piping is fully insulated and additionally protected with PVC protection. For a tidy finish, the rainwater drainage (RWD) has been strategically applied for an aesthetic result.

Result

With the Nibe F2120 heat pump in place, the house with GP practice now has a sustainable, energy-efficient heating solution. The system offers:

• fully all-electric comfort,
• reliable back-up retained for continuity,
• a legionella cycle that brings the tap water above 60°C once a week,
• future-proofing thanks to the buffer vessel and readiness for adjustments.

Thanks to this approach, the building is ready for a sustainable future, with significant energy savings and preservation of living and working comfort.