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Geothermal Ground-Loop Alternative
APOLLO Lake Heat Exchanger
A submersible heat exchanger designed to sit directly in a lake, pond, or reservoir, acting as a ground-loop replacement for a geothermal (water-to-water) heat pump system.
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1 set (for 4T Geothermal)
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Product details
- Submersible heat exchanger for lakes, ponds, or reservoirs
- Ground-loop replacement for geothermal heat pump systems
- Passive design
- AISI 316 stainless steel construction
Lake Heat Exchanger – Geothermal Water Source Heat Exchanger
High-efficiency submerged heat exchanger designed for geothermal systems, using natural water sources like lakes and ponds to deliver stable and reliable thermal exchange.
Key Benefits
- High-efficiency heat transfer using natural water bodies
- Passive operation with no moving parts for silent performance
- Durable AISI 316 stainless steel construction for corrosion resistance
- Low-maintenance design ideal for long-term use
- Eco-friendly solution reducing energy costs and carbon footprint
- Customizable for multi-module installations with optimized headers
Specifications
- Material: AISI 316 Stainless Steel
- Plate Size: 6' x 7' (1.85m x 2.30m)
- Ports: 1-1/4" flanged NPT (inlet/outlet)
- Manifold: 3" for pressure distribution
- Operational Pressure: 100 psi
- Operational Flow: 9–11 GPM
- Installation: Submerged in lakes, ponds, or reservoirs
- Operation: Passive, silent, no moving parts
For multi-module setups, custom headers can be designed to match your project’s layout—saving time, reducing installation costs, and improving system efficiency.
| Material | AISI 316 stainless steel |
|---|---|
| Plate size | 6'×7' |
| Ports | 1-1/4" flanged NPT input/output |
| Operating pressure | 100 psi |
| Operating flow | 9–11 GPM |
| Manifold | 3" for pressure distribution |
| Engineered for | APOLLO 4-ton and 6-ton geothermal systems |
- Material
- AISI 316 stainless steel
- Plate size
- 6'×7'
- Ports
- 1-1/4" flanged NPT input/output
- Operating pressure
- 100 psi
- Operating flow
- 9–11 GPM
- Manifold
- 3" for pressure distribution
- Engineered for
- APOLLO 4-ton and 6-ton geothermal systems
Answers
Frequently asked questions
What is the APOLLO Lake Heat Exchanger used for?
The APOLLO Lake Heat Exchanger is a submersible heat exchanger for a lake, pond, or reservoir. It is designed as an alternative to a drilled ground loop for a geothermal water-to-water heat pump system.
Can the Lake Heat Exchanger replace a drilled ground loop?
It is designed to act as a ground-loop alternative where a suitable lake, pond, or reservoir is available. The site and system must be reviewed to confirm that the body of water and the geothermal equipment are suitable.
Which geothermal heat pumps is the Lake Heat Exchanger compatible with?
The Lake Heat Exchanger is explicitly engineered for compatible APOLLO 4-ton and 6-ton geothermal heat pump systems. It is a companion component for those systems, not a standalone heating product.
Does the Lake Heat Exchanger have moving parts or fans?
No. It uses a passive design with no moving parts or fans, so the heat exchanger itself operates silently while submerged in the lake, pond, or reservoir.
What are the Lake Heat Exchanger specifications?
The documented design has a 6-by-7-foot plate, 1-1/4-inch flanged NPT input and output ports, 100 psi operating pressure, 9–11 GPM operating flow, and a 3-inch manifold for pressure distribution. It uses AISI 316 stainless steel construction.
How do I size the APOLLO Lake Heat Exchanger?
This is a fixed single-design product rather than a tiered model range. Confirm the geothermal heat pump match, body-of-water conditions, flow, pressure, and installation requirements with an MBTEK specialist before ordering.
Does the APOLLO Lake Heat Exchanger include a manual?
No published manual is currently available for this product. Contact an MBTEK specialist for installation, compatibility, and system-planning questions before ordering.
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