Surface mount or bury primaries for heat pump installation?

tomasmcguinness · 2025-06-21T16:58:07Z

Hi, I'm in the early stages of planning my heat pump installation and whilst I know where the pump itself will be sited, I need to work out how to get the water into the garage. The path will see the pipes run up the side access and turn into the garage before getting connected to my heating. The route includes data and power cable. I have two options. 1. I surface mount the primaries and run them along my neighbour's wall. I then have to either go under the paving or run the pipes up an over. I'll need a bracket of some sort between my neighbour's wall and the heat pump itself as I can't fix them to their failing timber fence. 2. I bury an instulated pipe that holds everything. The problem is that my side access is pretty busy underground with storm, waster and water main pipes. I'm told I should bury the pipe at 600mm, but I don't believe that's possible. At least not all the way. I have photos of this before it was backfilled. What I want to know is why we can surface mount pipes in insulation, but we're required to put insulated pipes quite deep in the ground. Has anyone got their primaries buried at a depth less than 600?

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tomasmcguinness

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Topic starter 29/06/2025 9:52 am

What about those pipes that include conduits for electrical cables such as Isoflow or Uponor?

Owner of a ridiculously oversized 35kW boiler and trying to make it as efficient as possible. 4.8kW solar PV with 5.4kWh storage. EV driver.
Follow my journey at https://www.youtube.com/@tomasmcguinness
Next big project is a heat pump!

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