This house was originally built as a beach side cottage in 1905 on the west side of the City of Saint John. This project was a major conversion of an oil fired hot water boiler system to an in ground vertical heat pump of 5.4 t (6 ton) capacity. The owner researched and directed much of the work himself and called upon the best-known local and regional experts available to install the wells, piping and heat pump equipment. The heat pump is rated at 5.4 t (6 ton) and is at least twice the capacity required for a house of this size.
A key issue with vertical well heat pump systems is compacting the well piping with the right combination of sand and grout to give the maximum insulation value around the piping. There can be significant heat loss from vertical well piping and therefore protecting the piping with the right amount insulation is important. A special grout and sand mix has been found to have the maximum R-value under vertical well conditions.
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Passive Solar Sun Room, Saint John
