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Picture of SIDITE SS-M2 solar hot water system with two heat exchangers

SIDITE SS-M2 solar hot water system with two heat exchangers

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SIDITE SS-M2 solar hot water system is a complete, active closed-loop solar heating system with two in-tank heat-exchangers. It includes everything you need to start saving money with solar hot water heating.

The product will be shipped directly from China. You will be contacted shortly with a shipping quote before you are charged. Please allow 7 to 14 business days for orders to be processed plus standard freigt delivery time

Delivery Options
Old price:  $954.00 (USD)
Sale Price $795.00 (USD)

SIDITE SS-M2 solar hot water heater system operates as an active closed-loop system which can be filled with anti-freezing, non-toxic, highly efficient polypropylene glycol. The water is indirectly heated by two heat-exchangers (copper coil) inside the solar storage tank, while a pump with controller circulates the anti-freezing heat transfer fluid between collector and storage tank. An electric heating booster is built into the solar storage tank as the "back-up" in case that solar energy is insufficient. An expansion tank is designed to control the circulation loop pressure and help reduce energy consumption of circulating operations. The piping between the main components can be carefully insulated for high temperature resistance. The anti-freezing heat pipes inside the collector make the system operate in wide temperature range of -35°C - 300°C, best suitable for all climate conditions, such as northern latitude climates. It is the perfect hot water option for any household of 2-6 people.

Each system includes the primary components required for installation. It is our goal to keep our product cost low enough in order to ensure that we are making renewable energy products more affordable. All systems have been tested under the highest quality standards for the longevity of your investment.


  • Weight: ?? lbs
  • Solar Storage Tank Installation Space:
  • Solar Collector  Installation Space:
  • Packaging: Ships via freight on a pallet: GW ??: Gross Volume: ??
  • Installation: 3-4 days
  • Warranty: 5 year for solar storage tank, 5 year pump and controller, 1 year on balance of system components, 10 year limited on evacuated tubes
  • Fitting: 1" NPT (Collector), 3/4" NPT (Tank)


  • SIDITE collector
  • Adjustable tilt mounting hardware ??
  • Solar storage tank with 2 internal heat exchangers
  • Wilo Circulating pump
  • Expansion tank
  • Differential controller
  • Set of pump flanges
  • Set of ??  temperature sensors
  • Installation instructions

How to Install

The customer should also understand how to:

  • Sweat copper pipes or pex piping
  • Read pumping schematics
  • Wire electric pumps
  • Determine if a roof is capable of supporting the additional weight of the collectors (typically not a problem)

How to Size your Solar Hot Water System:

On average, a home requires approximately 20 gallons of hot water per day per person. Using this figure, you can calculate which size prepackaged system is suitable for your heating requirements.