UK power flushing calculator
Power Flushing Cost Calculator
Estimate a central-heating power flush from current UK radiator-count benchmarks with transparent modelling for system condition and region.
Enter a postcode to set the cost region automatically.
Estimated power-flushing budget
£479 – £620Typical planning estimate £544. The calculator interpolates the sourced 4, 6, 10, 11 and 15-radiator benchmarks; condition and regional factors are UK Home Costs modelling assumptions.
Benchmark source: Checkatrade 2026 power flush cost guide. System-condition and regional adjustments are UK Home Costs modelling assumptions. See sources →