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Geothermal efficiency without the boreholes.

ecoGEO+ heat pumps can take their heat from dry coolers. Outdoors there is only an exchanger and a fan. Indoors, the same variable-speed unit that makes heating, cooling and hot water.

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A four-storey office building cut open, with three dry coolers on the roof and an ecoGEO+ HP, two tanks and insulated pipes in the plant room

How it works.

  1. Outside

    A dry cooler, a heat exchanger with a fan, collects heat from the air. It also rejects heat when the building needs cooling. There is no compressor outdoors.

  2. Inside

    The ecoGEO+ unit holds the variable-speed compressor, the economizer exchanger and the controls. It heats, cools and makes hot water up to 149 °F, and up to 167 °F with HTR.

  3. In between

    A hydronic loop connects the two, so everything between them is plain piping. There is no limit on the distance between the outdoor and the indoor unit.

Why choose dry coolers.

Defrost with water
The unit defrosts through a heat exchanger inside, without using the compressor. You choose where the defrost energy comes from: hot water, the production side, the buffer tank or the pool.
Hybrid with the ground
Combine dry coolers with a smaller borehole field. The e-source controller manages up to three sources and uses the most efficient one at each moment.
Less noise
A single fan outdoors, and no compressor, so there is less to hear on the roof or beside the building.
Less wear
Only an exchanger and a fan face the snow, the rain and the salt, so there is little outdoors to wear.
No wells to drill
No drilling permits, no rigs and no lost weeks on site. It suits sites where boreholes are hard or too costly.
Fits each budget
Start with dry coolers at the lowest first cost. Add a ground loop later, or size a hybrid from the start.
The system side by side: a dry cooler, an ecoGEO+ HP with its front opened to show the compressor, the exchanger and the controller board, two tanks and a boiler, joined by green pipes

What is inside the system.

  1. 1Dry coolersOn the roof or on the ground, sized to the load.
  2. 2ecoGEO+ HPVariable-speed compressor and economizer exchanger in one cabinet.
  3. 3ControllerRuns the whole plant. With e-source it manages up to three sources and the defrost priority.
  4. 4Hot and cold tanksStore the energy for heating, cooling and hot water.
  5. 5Backup boilerThe last resort. It is used only in extreme outdoor temperatures or for safety, and it joins after the heat pump, on the production side.

Choose the balance between first cost and efficiency.

Pick a setup to see where the energy comes from.

Where the energy comes fromThree possible sources on the left, the heat pump in the middle and the building on the right. The thickness of each pipe shows how much of the energy the source supplies.Dry coolersGround loopsBackup boilerecoGEO+HPBuildingheat, cold, hot water
  • Dry coolers100%
  • Ground loops0%
  • Backup boiler0%

Illustrative model. The shares show the idea, not a measurement.

Cold climate and backupAll heat sources

Draft Model list, sound data and defrost limits are added when the dry cooler sheet is approved for the US.

Tell us about the site.

Send the plans or the loads. Ecoforest’s technical office reviews the design at no cost, with dry coolers, the ground or both.

Get a preliminary scopeDatasheets and presentations