Boiler does his job quietly and provides more than enough hot water. We have him for about eighteen months and compared with our previous HR Kete . . super-heating boiler itself placed a piece of the water as hot cent. nog never had been at the top of the water is very hot even douche. het hee . . How can you define sustainability as he was only a few days in possession? Simple, I have this boiler has posted several times and never had any problems . . Since a few days we Intergas HRE 36/30 combination with a smart thermostat. This blue angel over 18 years of age had. We have . . Fantastic kettle. I recommend him for years and am now a home since 2009. To be sure that he really is as economical as I have energieverbru . . In particular, I really appreciate the silence. What a difference compared to a VR-boiler. Moreover, these boiler properly chosen to yield and price, after t. . Benraad because my old Blue Angel in 1994 was due for replacement, I bought this boiler. I myself am a plumber, and the company I bi . . I recently hung the kettle. In terms of great warmth and comfort. Only downside is the noise when the boiler on / off-beats. Then a iritante hum . . We have the boiler for several months now. It suits well. Fast and enough hot water. However, I have the idea that he slowly warmed over . . For several days in the possession of the Calenta 28C to replace my 14 year old boiler Intergas. You may well find that the technology . . After 19 years a vaillant ketel. heb I decided to buy a Remeha calenta after reading all the reviews on kieskeurig. tot now I'm very satisfied . . For many years a Nefit Turbo used to have a different kettle. My eye fell on the Calenta ISence 28s incl. I installed it yourself . . Boiler now half years in operation, immediately uitbreidingsbox (SCU-02) in the CV, so the heating of the floor heating pump runs when needed . . Two weeks ago I accompanied a friend (who has often done), my 20 year old boiler replaced by Calenta 28C with I-sense. This . . The Calenta is a very nice quiet boiler. He gives over hot water and combined with the I-sense, he controls the room temperature in a comf . . Since about 3 weeks of the boiler heating Remeha in use. I may say that we are very happy with the boiler, especially in terms of comfort. I would guess . . The stainless steel is much more durable and never rusts. It is produced with different levels of quality (AISI 308-AISI 314 - AISI 316 - AISI 316 L). His method of MIG welding are made, this is exceptional corrosion resistance even in the presence of water is particularly hard and full of chlorine. Instead of Solar Systems, the majority of manufacturers of solar systems using steel AISI 308 or 314 for building your own tank, for reasons of cost. To prevent them from rusting, protecting the interior coated (Teflon, or glazing or vitrification porcellanatura etc. . ). The continuous changes in temperature and pressure inside the tank give rise to thermal expansion, which over time, damage the coating. Aware of this, manufacturers are forced to provide them with "magnesium anode sacrificial" to reduce the risk of corrosion and stray currents. In addition, accidental knocks sustained during transport and installation operations, unbeknownst to the buyer may irreparably damage the inner lining. The damage can not be tested or installed in the first period of operation. This will be found until some years later, during the first inspection of the magnesium anode. Between the foam and the outer surface of the kettle, over time, humidity and condensation produce a slow corrosion of steel, which is the hole by putting down your systems. Stainless steel has the best record in the world since his first job in 1965, which is why super kettle Solar has never received complaints in case of corrosion of the tank. Even the super kettle Solar electric resistor element is made of stainless steel, compatible with the stainless steel tank, universally recognized as the most suitable, in particular in the presence of hard water. An item of lesser value should be used in porcelain systems to maintain compatibility with the magnesium anode. Solar Systems SpA - P. IVA 01829150307, ??N. reaction UD 198629; capital € 2,000,000. 00 iv; on Archbishop Romero, 59, 33038 San Daniele del Friuli (UD), tel. : 0432 941208, fax. : 0432 954 526; Toll Free: 800-969126. . . .