The pumps used in solar thermal installations come in both AC and DC models. It is important to choose a model that not only fits your electrical supply but which is also compatible with the rest of the system, in terms of construction materials.

The problem with pipe insulation is that solar thermal systems operate at extremely high temperatures, all the time. You can forget most types of plastic and rubber insulation immediately, because they'll just melt off.

A simple concept for solar heating is the use of cladding material on south-, west- or east-facing walls. Small gaps enable air to flow in from outside. In the daytime, air passes across the solar panels as well as along their inner surfaces, absorbing the sun's rays to warm the air, causing it to rise. This hot air is drawn into the ventilation system of the building, reducing the load on the heating system. On hot days, such systems can heat air by as much as 30-50°F (17-28°C), depending on the rate of flow.

Solar energy is free, renewable and non-polluting, so why isn't it used everywhere today? Most people have the same implementation questions: Do you have to change your lifestyle with a passive solar system? Are there concerns with its variability and is it worthwhile? Are you better off going with a traditional heating system? Solar-based living does not necessarily mean a house full of glass and complicated electronics. There are some simple guidelines that will enable your home to enjoy the sun's energy to the fullest.