Dear Sirs,<div><br></div><div>I model an underfloor heating system which get the appropriate hot water from a solar collector system. In order to meet the needs always I want to integrate an electrical auxiliary boiler to warm up the water in the set temperature when is needed. Which type can be used as an auxiliary boiler?</div>
<div>Thank you.</div><div><br></div><div>Regards,</div><div>Eva</div>