Things we get excited about!!!!!

This is the inside of our new/used 30'x100' Harnois Ovaltech greenhouse. After construction, we dug 24" down around the inside walls, and placed 2" foam insulation to keep the cold outside ground from penetrating inside. and the heat from the flooring from escaping.

We installed a radiant heat floor, with tubing spaced every two inches running the length of the house. Delivering the heat to the root zone of the plants is more efficient than just heating the air, and we hope it proves to lower fuel costs as well.

The side walls of this Harnois greenhouse roll up for easy ventilation when the sun really shines

The system is made up of thousands of feet of flexible tubing that 175 degree water runs through. The water runs through the system realeasing the heat right at the root zone. Since heat rises...the plants get the heat first as it slowly rises into the peak of the house.

We have a on demand propane hot water heater heating the water to 185 degrees. After it goes through the system it returns and gets reheated. We plan to replace this heater with a larger, more efficient oil boiler when time and money are more available.

We ended up using just about 15,000' of tubing to cover the floor. You can see how much tubing was laid in just 1/4 of the house. We installed two zones one on each side of the greenhouse and turned them on as they were needed.

After the tubing was laid and turned on and double checked, we laid down a second layer of weed barrier cloth to protect the tubes and give the plants a solid layer to rest upon. You would never know anything was under there!!!

This is a picture of the outgoing and return systems coming off the header pipes. After the sytem was completed, we built a simple wooden box over top of the manifolds to protect against foot traffic.

After two and a half weeks of seeding and planting, the greenhouse is full.