Residential Geothermal Installation – Topsfield, MA
Overview
Achieve contracted with a local builder for the installation of a geothermal heating
and cooling system in an 8,000 square foot, three story residence in Topsfield.
The installation also included providing heat and air conditioning to a bonus room
over a detached three car garage. The residence was completely renovated; the garage
is new construction.
Design
Achieve calculated the heat and cooling loads for the house using industry recognized
methods. A horizontal closed-loop heat exchanger was sized according to the heat
load requirements. At the owner’s request, the residence was divided into eleven
heating and cooling zones. Two heat pump/air handler package units were placed in
the basement to provide heat to the main floor. Two split unit heat pumps were placed
in the basement with air handlers on the third floor to provide heat to the second
and third floor. Three of the groundsource heat pumps also provide domestic hot
water. One split unit was chosen for the bonus room over the garage.
Installation
The geothermal loop was installed in trenches. Excavation to 8 feet deep was provided
by the builder, with the ground loop installation by Achieve. Approximately 1,400
feet of trench was excavated over an 8 day period. Over 7,300 feet of tubing was
installed within the trenches. Achieve provided the installation of the heat pumps,
duct work, thermostats, humidifiers and zone controls.
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Key Site Information
Site Location:
- Topsfield, MA
- 8,000 sq. ft residence
- Property abuts Ipswich River
- Geothermal ground loop trenches to fit within 0.5 acres of land
Date of Install:
Site Details:
- Formerly heated by fuel oil
- No heat source during installation
- Numerous sub-contractors requiring heat to continue their work
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