Replacement heating pump / high-efficiency gas heating pump

Hello everyone, I am currently modernizing our house. At the moment, I am concerned with the question of what should be renovated / renewed to be energy-efficient.

Gas condensing boiler about 10 years old, underfloor heating basement, radiators upper floor.
There are 4 heating pumps from Wilo installed, plus one pump for solar thermal.

The pumps are functional, but according to the plumber, they are no longer state-of-the-art. He recommends the Evosta 3 as pumps.

Should investment be made here? Is the renovation more expensive, or which pumps can you recommend?

These are currently installed:


Thank you and regards

I push again …. :)
I am grateful for any help

What does the conversion cost?
How much electricity does it save?

How much does the conversion cost?
How much electricity does it save?

there are two
options:
I buy the pumps myself for about 100 euros and have them installed (MyHammer or acquaintance)
Or
The plumbing company installs them for about 300
euros per pump but is eligible for funding

according to research old pumps consume about 50 watts, new ones about 15 watts

Then roughly calculate it. 35W saved per pump with about 150 heating days per year -> 126kWh per year. At 30Ct, that's 38€ saved per year. After 5 years, you have almost made back the 200€.

Then calculate roughly. 35W saved per pump with about 150 heating days per year -> 126kWh per year. At 30Ct that means 38€ saved per year. After 5 years you have almost earned back the 200€.

Can you tell me which new pumps I need to buy to replace my old ones? So, what should I pay attention to, designation? Thanks :)