Hydronic Solar Thermal System for Winter Space Heating




Introduction: Hydronic Solar Thermal System for Winter Space Heating

This is a collection of photos showing my Hydronic Solar Thermal System that I use for winter space heating. The heart of the system is an array of flat panel solar thermal collectors that heat up water when the sun is shining on them. The heated water is circulated through pex radiant in-floor heating loops underneath my kitchen floor. The result is 3000 to 4500 watts of free heat delivered to the inside of my home during sunny periods.
At this present time, the system is up and running and producing plenty of useable heat. However, it is far from complete as I have plenty of expansion planned in the coming months. The system currently heats only the kitchen on the main floor but will be expanded to cover almost the entire main floor of my house. I will also add the ability for the system to heat domestic hot water for use in my showers and lavatory sinks.
A full instructable is under construction for this project. I will try to highlight as many features as I can with the note feature in these pictures. If you have any questions please feel free to ask away or visit www.builditsolar.com for more information on solar thermal projects that you can build yourself.

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    6 Discussions


    4 years ago

    this is beautiful, I am interested in this process for housing for the homeless, tiny houses no more than 100 square feet. this process could be used for the heating of the space?


    5 years ago on Introduction

    Hey man, long time no chat! I was searching solar heating projects and saw you came up again! I made a solar air heating system, but wow, your hydronic solar heating setup is really cool! Here is mine if u r interested in seeing it: https://diybarrelstoveoutdoorfurnace.wordpress.com/2014/12/28/diy-window-mount-solar-air-heater-presentation/


    7 years ago on Introduction

    Nice job! Do you have a general idea of the total cost?


    Reply 7 years ago on Introduction

    I haven't tallied up the total cost of the system but off the top of my head I would say between $1000 and $1100. This doesn't include the control electronics I'm using since they could easily be whipped up with a $20 Arduino and $20 worth of components. Thank you for your comment.