Please help me Build my Geothermal Pond Loop

Discussion in 'General Discussions' started by Mudyser, Nov 13, 2023.

  1. Mudyser

    Mudyser DIY GUY

    Could you please help me with pipe sizing and let me know if I am trying to replace 2 Spit System heat pumps, one (4 ton and one 3 ton) with Geothermal units, can I use 1 loop for both units or would it be better for each unit to have its own loop? These are my conditions: Large Lake 75 miles long) Lake is 300ft away from house downhill with 10ft of water under the floating dock - elevation from house to Lake is 15ft below house level -

    I was planning on a closed loop system with Coils built on a PVC skid with Blocks underneath for weight - Location Upstate SC - Lake never Freezes - I would like to only trench in 2 lines to the house to feed both units, but If I need separate loops for each unit that will be 4 lines up from lake I think?? maybe 1-1/4 feed lines??. I was planning on 2500ft of 3/4 HDPE for the Loops (1000ft for the 3 Ton and 1500ft for the 4 Ton unit with 1-1/4 or 1" HDPE To feed the Loops from House? I have a Socket Fusion welder and dies up to 1"-1/4 IPS pipe if needed.

    I would need to enter the slab foundation house on the 3 Ton Unit side of the home and go up wall to attic. (Home is on a slab). Then I could go through the Attic to get to the 4 Ton Unit which is about 50ft away. I plan to replace both Units with 2 Geothermal Units and plan to mount both Air handlers/ Compressors/ evaporators/ complete package units in the Attic, unless it makes more sense to do one Split geothermal unit outside to handle both units?? I was looking at using ¾” 500ft coils to reduce the size of my PVC platform but I cannot seem to find ¾” plastic spacers for the coils anywhere?? Are 500ft coils Okay?

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