We have developed installation kits for heat pumps from different manufactures. Using TopBox gives you great savings on component costs. Complete assembly costs are lower than buying components separately. The time gain while installing heat pump is very high and also gives savings on work fees. TopBox always ensures correct installation without errors. Supplied with expansion tanks for heating and domestic water, safety valves, mixing and filling valve and pressure gauge. Solution is highly adaptable and we can make desired changes to all solution.