In January of this year, he asked about radiant heating in the new 1700 square foot barn. We obtained a copy of the blueprints and we got the green-light to begin doing our planning and calculations. Our first step was to input all the data into our heat loss software and it provided us with the numbers we needed to begin laying out the framework. Based on the building, it would need 43,467 BTU/HR heat at an 8°F outdoor temperature. Our calculations and software laid out the loops for the maximum efficiency and I discussed the width of tubing and lengths that would be required. At this point we ran into a bit of a crossroads.
The customer wanted to install ¾” HE-PEX with 18” spacing installed in 6” slab as this is what his brother did with a similar project and he wanted to follow suit and use the same techniques. We attempted our best to have him go with ½” that was recommended but he was insistent on using the ¾. Since we believe in providing the customer what they want, we went back and recalculated for ¾”. We could get 118° water temp with 4.38 gallons per minute with 4.9ft of head loss. The outcome was the use of lower water temperature that provided our desire for high efficiency and the homeowner was pleased that his requests were honored. Communication and compromise was key to having both of us able to discuss what was best mechanically and the desirability of the homeowner to emulate his brother’s layout.
Fast forward to now in the stickiness of July, the tubes have been laid and concrete is scheduled for delivery and waiting to be poured. Once these steps are complete we will be installing a condensing gas boiler manufactured by U.S. Boiler. Stay tuned as this project advances for more details and information to follow!
You can read more about tips and tricks in our guide for new homeowners here.