# Belterra Geothermal Retrofit, Bowen Island

- Link: https://zencoredynamics.ca/projects/bowen-island-geothermal-retrofit/
- Published: 2026-10-14T15:34:00-07:00
- Author: 

Bowen Island · Project

# Belterra Geothermal Retrofit, Bowen Island

[Explore this room in 3D](https://zencoredynamics.ca/#zc-3d-hero)

A geothermal retrofit of an existing mechanical room at Belterra on Bowen Island,
with radiant floor heating and cooling. Here is the room before and after.

## Before and after

### Mechanical room

Before⌊Before: old concrete mechanical room with the original geothermal unit and
older piping⌉

After⌊After: GeoStar geothermal heat pump with the black buffer tank and expansion
tank beside it⌉

### Radiant manifold

Before⌊Before: old red PEX radiant manifold in a wood-framed wall⌉

After⌊After: new insulated radiant manifold with blue zone controllers⌉

### Boiler and tanks

Before⌊Before: Viessmann Vitodens boiler and tank beside the old piping⌉

After⌊After: new IBC boiler on a plywood panel with controls, buffer tank and hot
water tank⌉

## More of the finished system

![After: new GeoStar geothermal heat pump with insulated piping to the wall manifold](/
wp-content/uploads/zc/projects/bowen-geo/after-6.webp)

![After: white hot water tank, expansion tank and black buffer tank with insulated
piping](/wp-content/uploads/zc/projects/bowen-geo/after-2.webp)

![After: white hot water tank, expansion tank and new IBC boiler on a plywood panel](/
wp-content/uploads/zc/projects/bowen-geo/after-3.webp)

![After: black buffer tank with insulated piping and controls](/wp-content/uploads/
zc/projects/bowen-geo/after-4.webp)

## Before

![Before: older piping and fittings on the concrete wall](/wp-content/uploads/zc/
projects/bowen-geo/before-2.webp)

![Before: the original heating equipment with its front cover off](/wp-content/uploads/
zc/projects/bowen-geo/before-3.webp)

![Before: old copper piping and valves in the mechanical room](/wp-content/uploads/
zc/projects/bowen-geo/before-5.webp)

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