Heating System Replacement Cost in South East

Estimated £12,816 – £20,046

Itemized cost breakdown
Item	Estimate
Outdoor condenser unit	£4,829
Furnace / heating unit	£1,697
Evaporator coil / air handler	£1,275
Refrigerant lineset & connections	£918
Installation labor	£4,056
Permit, disposal & startup	£918
Subtotal	£13,693
VAT (20%)	£2,739
Total inc. VAT	£16,431

What affects heating system replacement cost in South East

Heating System Replacement costs in South East differ from the national baseline mainly because of local labor rates. Construction-trades wages in the South East are about 4% above the GB mean (ONS ASHE), used here as a disclosed proxy for heating engineers, reflecting the region's proximity to London and its higher general wage levels. Among the mildest and driest mainland regions, with a short heating season inland, so heat pumps can be modestly sized; the Channel-facing coast adds salt-laden air that warrants corrosion-protected outdoor units near Brighton and the Kent shoreline. A heating-system replacement in the South East is notifiable under Building Regulations (Gas Safe or MCS sign-off), usually self-certified by the installer; the region's many AONBs and conservation areas (the North Downs, the Sussex coast) are where an external heat-pump unit most often needs consent. Heating-system work carries 20% VAT (UK-wide); domestic heat-pump installs are currently zero-rated separately — see header caveat.