Evacuated Tube Collector

The solus™ line of collectors come in 10, 20 and 30 tube arrays.

SOLUS™ 10   *   SOLUS™ 20  *   SOLUS™ 30

Installation Manual & Owner’s Guide

Evacuated tube collectors are recommended where there is cold and seasonal weather changes. Because of their round shape, the evacuated tubes self-track the sun and will hit peak performance almost as soon as the daylight strikes them and will maintain that curve all day long. Thus, where higher performance and higher temperatures are required, evacuated tubes are the collectors of choice, especially for heating or cooling. In addition, they are easy to install as they are assembled on the roof so there is no need for a large crew.

How does our system work?

Solar radiation falls on the collector, which is then converted into useful thermal energy and reserved in a storage tank. SolarUS evacuated tube collectors are available in black and silver, and can be mounted via a roof or ground mount.

Two pipes, a flow and a return connect the collector to the pump station – which is also connected to the water tank. The station contains the pump, flow control, flow meter safety valve, air purge and the solar controller. The controller monitors the system and turns the pump on if the collector is hotter than the hot water tank, so that more heat is absorbed into the tank.

An evacuated tube is two glass tubes, one within the other, joined at each end. The space between these tubes is evacuated so the space is under a vacuum seal. Vacuums are excellent insulators (think thermos.) The inner tube is “painted” with a selective coating that converts light into heat.

Guaranteed for fifteen years (the longest warranty on the market) SolarUS tubes are made from high quality borosilicate glass and are fused together. This provides an all glass seal. Some manufacturers use a metal plug to provide the seal which can result in the decreased life of the tube, due to a difference in expansion and contraction rates. The SolarUS tube uses a unique three layer selective coating instead of the standard single al-n/al coating. It consists of an infrared emission layer, an absorption layer and an anti-reflective layer, giving a much improved performance.

Lastly, the silver end of the tube is a “getter” which acts as a sponge to suck up any gasses remaining after evacuation. Should the vacuum be lost, the silver will disperse along the tube “smoking up” the tube and alerting you to replace it.


Additional Downloads:

SRCC Certification


SolarUS is a producer and distributor of evacuated tube solar collectors and solar thermal products. SolarUS commercial and residential solar thermal systems feature innovative, technological advances to solar collectors and are suitable for both residential and commercial use.