Solar Water Heaters

Solar Water Heaters

direct integrated solar water heaterPressurized, Double Tank Solar Water Heater System

  • Combine the advantages of both a pressurized and non-pressurized solar water heater
  • Food grade stainless inner water tank
  • Built-in electric heating element
  • Solar vacuum tubes with blue diamond coating
  • Provides the best value options for both water and space heating
  • Available in 40, 50 and and 80 gallon sizes
  • For both residential and commercial water heating applications
Buy Now Online or Call 352-262-6531 to Order
40 Gal Pressurized, Double Tank Solar Water Heater 50 Gal Pressurized, Double Tank Solar Water Heater 80 Gal Pressurized, Double Tank Solar Water Heater
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Select Ship To Destination for Total
Select Ship To Destination for Total

Free local pickup is available in Gainesville, FL USA, Please call to arrange local pickups.

Your total purchase price, including warranties, and accessories can all qualify for federal tax rebates.

Optional Accessories

Lifetime Limited Warranty

Your QDD Solar Water Heater comes with a 3yr warranty. Upgrade your warranty to lifetime status and your system will be covered for manufacturer's defects affecting performance any time down the road for the original purchaser.



Tempering Valve

Use our advanced tempering valve to setup the water temperature you want to avoid scalding. Recommended.



Select Size

Solar Water Heater Controller

With this upgrade, you can electronically set and automatically maintain the minimum water temperature of your solar water heater tank. If you ever run into extended periods of sunless days, this controller can be set to engage the solar water heater's built in electric heating element to effortlessly maintain your hot water temperature. Compatible with direct and double tank solar water heaters.


Additional Information

Here's how QDD Solar's pressurized, double tank solar water heater system works:

Our double tank solar water heaters use 3rd generation technology, maximizing efficiency up to 97%. Water heating is currently one of the most cost-effective ways to utilize the power of the sun.

The pressurized, double tank solar water heater design combines the advantages of both pressurized and non-pressurized units and is suitable for installation on the ground or rooftop.

This chart shows how the solar vacuum tubes gather energy from the sun and heat the cool water at the bottom of the tank. Warm water naturally rises to the top of the tank and is then transferred through the pipe into your plumbing for use, combined with cold water at a mixing valve to control water temperature.

The time it takes to heat water is less than three hours and water can be maintained at a warm temperature for up to 72hrs in the absence of sunlight. The built-in electric heating element can serve as a back up in the case of long periods of sunless weather.

An optional QDD Solar Tempering Valve can also be installed (recommended) on the solar water heater system to regulate the temperature of water coming from the tank.

double tank solar water heater

For commercial use (hotel, office building etc.), or pool, spa or hot tub heating, several solar water heater units and/or solar collector tubes can be connected together to provide high capacity water heating.

In this fashion, businesses can greatly reduce their electric bills and home owners can use their pool, spa or hot tub all year round. Please contact us to answer your questions on configuring a solar energy solution that is right for you.


Solar Water Heaters and Solar Panels of Gainesville, Florida
We ship everywhere in the continental USA.