Herz Changefix TRV Insert Replacement Tool (M28 x 1.5)

Save hours on heating service calls with the Herz Changefix Tool. Designed for professional heating engineers and plumbers, this essential maintenance tool allows you to replace sticking or faulty thermostatic radiator valve (TRV) inserts without draining down the central heating system. Live System Maintenance: Change TRV inserts while the heating system remains fully pressurized—no draining, refilling, or radiator bleeding required. Integrated Cleaning Brush: Includes a specialized brush attachment to scrub scale and debris from the valve seat before fitting the new insert. Standard Fitting: Perfectly compatible with most Herz thermostatic radiator valves featuring an M 28 x 1.5 threaded connection. Profitable Efficiency: Cut downtime on site and drastically lower labor time per radiator repair. Data Sheet Watch Video