Positive input ventilation cost (UK 2026)

Positive input ventilation cost (UK 2026). The published installed range in 2026 is £450 to £950 installed (publisher data; Approved Document F reference). Both ends of that range are stated rather than collapsed to a midpoint, because the spread reflects real differences in scope, access and grant eligibility rather than installer mark-up.

• Loft-mounted vs hallway-mounted unit.
• Filter type: G3, G4 or carbon.
• Running cost: roughly 50 to 90W continuous, which is 438 to 789 kWh a year, so £115 to £208 at the 26.32p electricity unit rate in the Ofgem cap for 1 October to 31 December 2026.
• Listed-building suitability is generally good (no ductwork through fabric).

PIV is the right answer in many cavity 1930s semis where MVHR is not viable; it is a condensation manager, not a heat-recovery system.