Dear All,
Sorry for writing in English language, however my German is not so good. I hope You will translate it without a problem.
My question is about Attack SLX 25, 30 and 35 kW Profi. All of these boilers have the same size, loading chamber, weight and even the heat-exchanger (basing on producers data).
But SLX 25 an 30 have higher efficiency then 35 kW. So hypothetically, with the same size of loading chamber and heat exchanger it is better to buy 25 kW then 35 kw, it will charge accumulation tank longer but more efficiently, or it is a wrong thinking ?
Maby can You write on Yours experience, what are the main differences of these boilers, and how fast can they charge 1000 - 2000 liters accumulation tank (as recommends producer).
I am looking now for new boiler for 200m2 house, so Thank You for every advice.
Please write in German or English
Best Regards
Andrew