Merchant Verified
Begin main content

Product categories

Goldline Controls No. GL-30 Differential Controller

for water / space heating, hardwire



sku: goldlinecontrols-gl-30
alt ref: ggl-30hw
unit: each
Our Price: $139.00
Usually Ships Within 24 Hours

No. GL-30 Differential Controller

Designed for maximum operating efficiency and flexibility. It is capable of handling most differential temperature control functions for space or water heating.

The GL-30 output is designed to operate a circulator or fan when sensing an appropriate temperature differential. Adjustable differential, from 8°F to 24°F, allows the GL-30 to be tailored to specific needs of the system. Storage high limit, adjustable from 110°F to 230°F, protects most solar storage systems. Recirculation capable. Relay rated at 10 amps output.

Note: This model does not include power line cord or socket for controlled output. The GL-30 with line cord and socket is available at goldline-gl30-lco.

A GL30 requires two Goldline 10k sensors (and wire) to operate. Sensors are sold separately. The Goldline SB sensor is standard.

Downloadable product file

After downloading, Acrobat (.pdf) files can be viewed using the free Adobe Acrobat Reader. If you do not have it, Get Adobe Acrobat Reader.


People who bought No. GL-30 Differential Controller also bought:



Be the first to review this item!

Subscribe to Solar: Space Heating / Cooling Accessories announcements.

Product copyrights and other marks held by their respective owners. Product information used by permission. Information subject to change without notice.


DekkaSupply.com Copyright ©2008-2010 Dekka Corp, Oregon, USA. All Rights Reserved.
The current image of the sun courtesy of SDO (NASA) and the AIA, EVE, and HMI consortium (link opens in new window)
304 Angstrom field image. Time stamp is UTC.
Valid CSS!