27 tubes, glass heat pipes, 170 liter (45 gallon) stainless steel inner tank, aluminum stand, air vent. No pressure tank-automatic filler valve included for connection to pressurized water, manual filling and draining possible. Gravity drain, or use pump downstream for high pressure. Freeze proof.
SRCC Certified Solar Collector, 20 Tube Panel, Copper Heat Pipes
Large scale freeze proof solar panel. 20 Evacuated tubes with metal heat pipes. SRCC, CE and Solar Keymark certified. 1800 mm evacuated tubes. Highest pressure system. Excellent drain back.
Also available without mounting stand (ie: roof facing due south with a slope equal to latitude, save 48 USD/50 CAD
Premium system vacuum tubes connected with a header and frame suitable for roof mounting, high pressure copper tubes, aluminum fins. German laboratory certification. Copper U tubes inside 1.5 meter evacuted glass tubes. Fluid circulates from the header to the bottom of the tubes, then back up.
12 tube panel, stainless steel header: Pickup at Fraser Valley: $566 USD ($629CDN) Replacement 1500 mm tubes, $9.