October 31, 2025EnergiesOpen Access

Dual-Source Heat Pump Application for Boiler Replacement—Investigation by Simulation and Field Monitoring

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Results indicate a potential reduction in borehole length by up to 80% with dual-source systems.
Cost-optimal regeneration rates between 40 and 80% make dual-source systems cost-effective compared to single-source systems.
Verification of simulation results through field monitoring in a pilot installation supports the findings.
Ongoing assessments are essential to establish standard configurations and best practices for heat pump installations.

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Simulation demonstrates up to 90% CO2 reduction in multi-family homes, suggesting effective dual-source heat pump solutions.

Meier et al. (2025) studied this question.

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