What's the BEST Simple Greenhouse Heater for Winter?

Watch a video about the making of my geothermal greenhouse: https://youtu.be/J8rL71zWf_c With food security on my mind, I set up a budget heating system to keep my greenhouse soil above freezing in a New England winter. Instead of trying to heat the air, I use thermal mass: full water barrels warmed by inexpensive immersion heaters controlled by a thermostat. The barrels sit against the raised beds so the stored heat moves into the soil overnight. Links: BluetoothThermometer: https://amzn.to/3bsmaJy Palram Greenhouse: https://amzn.to/39GF8I6 Immersion Heater w/ Thermostat: https://amzn.to/4iS6Zs4 Water Barrels: https://amzn.to/4muodfO #greenhouseheating #greenhouse #wintergardening #thermalmass #backyardgardening #growfood #wineberryhill Special Thanks: Videezy.com 00:00 How to heat a greenhouse in winter cheap 00:15 Zone 6 winter greenhouse temperatures (New England) 00:30 DIY 6×16 greenhouse from two 6×8 kits 00:48 Keep greenhouse soil from freezing for winter vegetables 01:07 Cheap greenhouse heating with water barrels and immersion heaters 01:27 Greenhouse thermostat controller setup to save power 01:45 Place water barrels against raised beds to warm soil 02:00 Where to get free 55 gallon barrels for greenhouse projects 02:15 Monitor greenhouse soil temperature with a Bluetooth thermometer 02:30 Boost solar gain with black bags on barrels 02:45 Winter greenhouse results: soil low 40s and greens growing 03:05 Greenhouse thermostat and parts list for water barrel heat Explore the world of winter gardening by constructing your own diy greenhouse! This video guides you through how to build a greenhouse cheap, perfect for extending your growing season. Learn essential greenhouse gardening and homesteading techniques to enjoy fresh produce all winter long!