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Please contact us for solar water heater system or component pricing:

Propac Solar Pumping Station

When choosing components for your solar water heater, sizing the panels is easy, but matching the components of the HTU, or Heat Exchange Unit can be complicated.

Our integrated drainback system contains all of your solar water heater’s working parts, except for the panels, the piping and the heat transfer fluid, which is this case is distilled water.

The Propac drainback system is an enclosed package containing (2) pumps, a differential temperature controller, a servicable stainless steel heat exchanger which complies with the “double walled HX” requirement in many localities’ or water authorities’ code, temperature sensors, power supply, drainback reservoir and high pressure valves. This system is totally plug-and-play, and is reasonably priced.  The intelligent controls maximize the solar energy absorbed by your panels.

Even if you do pay a little bit more than the sum of the components, consider the labor saved by not having to mount and interconnect individual parts.

Withour further ado, we introduce the Propac HTU Drainback System here, as a rather unexciting, but informative download:

Download the Propac Manual Here.

The Propac Drainback HTU is available in residential and commercial sizes.

Please contact us for pricing on Propac, complete solar water heating systems, or on individual components -- terrific for DIY (do it yourself) solar:

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Flat Plate Solar Water Heater

So before you replace your water heater, call us at: 443-864-3072, or fill out our inquiry form below:

Maryland Green Power Co. has been selling a residential / small commercial sized solar water heater with 64 square feet of flat panel solar collector space (2 solar panels), drainback system with drainback reservoir, pumps, controller, valves, heat exchanger and all miscellaneous items except for PVC piping which are practically FREE after Federal, State and local solar incentives are factored in.

For businesses, depreciation of this equipment can make this an even better deal.

Check your local codes: Our solar water heater can pre-heat water and send it into your existing water heater tank. Why install a separate solar water storage tank and use up extra space? If your local codes require a double-walled heat exchanger, then we’ll include it in the solar water storage tank at a small extra cost, which is essentially subsidized by incentives anyway.

Best of all, this quality solar water heating system is built in the U.S.A.

More information can be found at the Types of Solar Water Heaters article. For inquiries, please contact MGPC at: 443-864-3072, or fill out form:

In fact, a 4 square meter flat plate solar water heater is equivalent in heat production to a 3 square meter evacuated tube solar water heater.

The flat plate solar water heaters tend to be a little less expensive, making them, dollar per dollar, about equal to the evacuated tube solar water heaters from an investment standpoint.

Quoting Intelligent Energy Solutions:

An independent study by the DTI compared a number of different types of system and the panel that produced the most hot water was of the flat plate variety.