Hello everyone,

I have modeled a ground source heat pump within the building I have designed and have been getting results that seem almost too good to be true. I decided to compare my results with a typical high efficiency air side heat pump and discovered that the geothermal system is operating about 65-75% better than the air side heat pump in terms of cost. The results from the air side heat pump appear to be correct and are reasonable for my design.

Has anybody else ever gotten results for a geothermal system design that were much better than expected? If so, was there something incorrect within your model or have you deemed it as an internal flaw of eQUEST? This project is for my masters thesis, so I am trying to justify my results as much as possible. For my system I am using two 3.5 ton GSHPs with an EER of 21.8 and a COP of 4.4, which is rather efficient.

Thanks,

Stephen Parker