Heliodyne HPAK2-406GF65E Solar Hot Water System Kit

Heliodyne HPAK2-406GF65E Solar Hot Water System Kit

2-4 People, 2 GOBI 406, Air Vent Kit, Racking w/ Quick Mount Flashing, 65 Gal Elec Backup Tank, Exp Tank, HPAK, Delta-T Pro Lite, Sensor Wire, Dyn-O-Flo

  • Item # 2330-003
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Price: $5,279.00
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Heliodyne HPAK2-406GF65E Solar Hot Water System Kit, 2-4 People, 2 GOBI 406, Air Vent Kit, Racking w/ Quick Mount Flashing, 65 Gal Elec Backup Tank, Exp Tank, HPAK, Delta-T Pro Lite, Sensor Wire, Dyn-O-Flo


Indirect solar water heating is the most common solution for most installations in North America. This system utilizes a closed loop design which protects it from freezing and hard water issues. A special heat transfer fluid circulates through the collectors instead of water, allowing greater durability and trouble-free operation. Because the Helio-Pak has an external heat exchanger, a single tank SHW system is easy to configure and is more cost- and space-efficient when compared to a traditional dual tank or coil-in-tank closed loop system.


When solar fluid in the collectors (1) is heated by the sun, it is pumped through the Helio-Pak (2), which then transfers that heat to water in your storage tank (3). The solar fluid then circulates back up to the collector where it again gets heated by the sun. This process continues automatically whenever the collector is exposed to sunlight. When there is little or no sun, a backup heating source self-activates to provide ample hot water for your home.


  • Plug & Play installation
  • Can be used unconditionally in all areas
  • Closed loop design protects from freezing and hard water
  • Ideal for installations with limited equipment space
  • Helio-Pak allows for compatibility with nearly all tank manufacturers
  • Cost competitive with other closed loop systems
  • Flush mount installation for 3:12-20:12 pitched roofs



Heliodyne's GOBI solar collectors are proven to be among the industry's highest-performing. They also prove to be the most durable. This combination guarantees you many years of optimal performance. The quality and design put into every component ensures a sturdy collector that maximizes energy conversion from the sun. As a result, these collectors work exceptionally well, even in geographic regions with limited sunshine. Besides outstanding functionality, GOBI collectors are designed to be aesthetically pleasing, combining a sleek profile with a dark bronze frame.


  • Low-profile tapered design for a subtle rooftop presence
  • Optimal heat absorption and overall efficiency
  • Certified to withstand 50lbs per square foot
  • Anodized aluminum frame improves durability & rigidity
  • No-solder connections with factory installed DYN-O-SEAL unions
  • Rated by SRCC and IAPMO as one of the industry's best-performing collectors


The Solar Rating & Certification Corp. (SRCC), the industry's governing body, has rated Heliodyne's Helio-Pak as 25% more efficient than other heat-transfer appliances. In other words, the Helio-Pak delivers more solar hot water to your home in a shorter period of time. The unique design of the Helio-Pak appliance also makes it significantly less sensitive to scaling in regions with hard water. Heliodyne's upgraded "Pro" model includes energy metering, Wi-Fi or Ethernet controller access, online performance monitoring, and automated service/maintenance notifications. These advanced features are made possible through many years of technology innovations and system refinements.

The Helio-Pak (HPAK) is an all-in-one heat-transfer assembly, specifically designed to simplify solar hot water systems and provide maximum heat transfer that is sixteen times faster than other heat transfer appliance on the market. The HPAK comes factory assembled and wired with all necessary components, making installation a trouble-free experience.


  • Augmented heat exchanger surface promotes maximum heat generation
  • Superior heat transfer via unique counter-flow design
  • Simple plug & play installation
  • Viewable heat exchanger leak detection
  • Several sizes available for differing loads



Pro Lite controllers come standard with the ability to communicate via a web monitoring system which allows the installer or end user access to the solar hot water system controller from anywhere with an internet connection. By simply logging onto a dedicated website for the controller, the user can view and make system adjustments miles away from the actual solar hot water system. Pro Lite controllers carry all the basic functions of the Delta-T, but add energy performance monitoring capabilities. The Pro Lite controller comes pre-installed with software allowing the controller to record and monitor energy data for the life of the system.


System Requirements

  • DSL, cable or other broadband internet connection
  • Open, WPA or WPA2 network authentication/encryption Wi-Fi router (WEP not supported)
  • Internet browser (e.g. Firefox, Chrome, Safari)
  • Flow sensor installed for energy monitoring


  • 2 program configurations available (open loop DHW, closed loop DHW)
  • 2 thermistor sensor and 2 pump relays
  • Remote web-based system monitoring and settings
  • Automated service reminders
  • Stored energy data (BTU, °F, GPM)


Heliodyne tanks have been specifically designed for use with SHW systems. Design features such as built-in sensor ports and solar in/out connections minimize installation time and optimize performance, compared to using traditional off-the-shelf water heaters.


  • 4.5 kW top electric element for auxiliary heating
  • Cobalt enriched lining for long life
  • Twin magnesium anode rods
  • Pre-installed ports for interconnecting multiple tanks (certain models only)
  • Factory installed brass drain valve
  • 2 non-CFC foam insulation (R-16)


Suitable for All Regions

  • Solar water heating systems can operate in any region, including areas with heavy snow or rain.


  • Compared will all other alternative energy options, solar hot water is the most economical choice for your home's renewable energy needs.

Simple, Easy Installation and Long-Term Benefits

  • A Heliodyne system can be installed within 1 to 2 days for most homes.
  • Very little service or maintenance is required over the life of the system.
  • Once installed, the system is fully automated.

Federal & Local Incentives are Available

  • These will significantly reduce the cost of a new system. Find which incentives apply in your area at www.dsireusa.org

Added Value for Your Home

  • Adding a solar water heater to your home increases its resale value by at least the cost of the entire system.


  • Heliodyne systems can easily operate 20-25 years or more without needing any significant maintenance.
  • GOBI solar collectors are designed and built to withstand the harshest environments, even hail storms.

High Return on Your Investment

  • With government and utility incentive programs, a Heliodyne cool climate system will usually pay for itself within 4 - 8 years.
  • A Heliodyne solar hot water system will significantly reduce your water-heating bills by hundreds of dollars annually.
  • A solar hot water system will provide you with a hedge against rising energy costs.

Preserves Our Environment

  • Installing a solar hot water system in your home is a proactive step for combating global warming.
  • A Heliodyne solar hot water system greatly reduces your home's CO2 emissions by up to 30%. This helps to preserve our environment for many generations to come.

Each Cool Climate (Closed Loop) Kit Includes (For 2-4 People)

  • (2) 4'x6' GOBI Blue Sputter Flat Plate Collector
  • (4) Dyn-O-Seal Unions
  • (1) Air Vent Kit
  • Roof Racking and Hardware with Quick Mount flashing
  • (1) 65 Gallon Electric Back Up Tank
  • (1) Expansion Tank
  • (1) Helio-Pak (HPAK) Heat Transfer Appliance
  • (1) Built-in Delta-T Pro Lite Controller for System Monitoring
  • (1) Coil Sensor Wire
  • (1) Dyn-O-Flo Heat Transfer Fluid
  • Generally all of our products are in stock and ready to ship within 2 business days.
  • If an item you ordered is out of stock, we will contact you within 1 business day with an expected ship date. You will then have the option to accept the new ship date or cancel your order.
  • Either way, we guarantee your card will never be charged until your order ships.
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