Three homes to install solar water heaters, 58mm vacuum tube that the minimum number of roots, the length of the right? What is the capacity of the tank? In addition to the purchase of materials also need to pay attention to what?
4 many brands. As long as the good things on the line. (stent thicker point, do not choose the kind of stainless steel shell, to the kind of color) four seasons, linuoruite, sun rain. Sang Ledu is a good brand. "The most expensive. Look at your economic strength. If you want to buy cheap,. Just choose the way I say to you. Right guarantee.5 home of the three choice of the 18 can be.
3 control instrument. These two sensors are most likely to be bad. (special attention must be given to lightning protection) general warranty is one year. What you say will give you an extension. Merchants can do the longest three years (this is a separate policy to manufacturers). General businesses do not want to look for trouble, only to the user that a year to see your eloquence
I'll give you a professional analysis. I'm a solar water heater.1 vacuum collector tube. Be sure to choose the three high purple tube. Don't be an ordinary three executive. Collector effect gap,2 water tank insulation layer, the uniformity is better. Looking more uniform,. Slightly thicker. Relatively good insulation performance
