Becoming a common theme...


New DSH system for 2018

Severe Cold Weather

First Drainback system

Wireless and Blue-tooth enabled new controller with the ability to monitor you system from anywhere, to be released in 2018. It will have international powering capability. See below

DSH engineered a new heat core storage system for extreme climates. It is designed to offset over 50% of yearly domestic  heating and hot water needs, and perform well at -30c

The first drainback system was installed in Wellington NZ in 2017 and home temperatures were held in the +20 to 23c range during the first winter. And this with almost no  summer heat storage.

DSH “Being a part of the solution, not the problem

Huge reductions in Operating Costs and Emmissions

Residential ~ Commercial ~ Industrial



DSH launched a very successful drain-back system in 2017. During a power failure when th pumps stop all thermal transfer fluid in the panels are allows tro drain back into a SS storage tank in the pump station. This prevents overheating of the solar system at a time when steam can be generated.


A new multifaceted controller is expected to roll out in 2018.

Some of the expected new features will include:

  • WiFi  enabled for smart phone or computer access
  • Bluetooth enabled
  • Data storage and performance  histogram
  • Online access from anywhere
  • DC system with International power capability
  • Variable speed high efficiency pumps
  • Multifaceted roof options
  • SCADA based digital control system
  • Heat storage depth temperature sensor
  • Cold weather option, tested in Alberta
  • Outside temperature ramping adjustment
  • Off-Grid capability