Teacalor is Stiebel or belongs to Stiebel. In the end, only the sticker with the company logo is changed. For that reason, the (almost identical) Teacalor system is then possibly about a thousand cheaper.
Can you write a little more? What heating load do you have? What supply and return temperatures? What seasonal performance factor? Funding?
Supply and return temperatures as well as the seasonal performance factor do not depend solely on the device. Other factors are the NAT, the Ht-value of the envelope, and above all the usually neglected heat sink.
Supply and return temperatures as well as the annual performance factor do not depend solely on the device. Other factors are the NAT, the Ht value of the building envelope, and above all the often neglected heat sink.
Is the heat sink the difference between supply and return?
But together with the heat pump data, that results in the annual performance factor, right?
In this context, the heat sink refers to the underfloor heating. NAT is the standard outside temperature, HT ultimately describes the heat loss of the house to the outside, that is, how good the overall insulation is.