Geothermal Ventilation Preconditioning Unit
| GEOTHERMAL HEAT EXCHANGE UNITS | ||||
|---|---|---|---|---|
| System | Includes Pump and Expansion Tank? | Heat Exchanger Fin Type | Heating Power | Cooling Power |
| G-6000 | YES | Aluminum | 5.44kW | 6.02kW |
| G-6001 | NO | Aluminum | 5.44kW | 6.02kW |
| G-8000 | YES | Copper | 8.10kW | 8.72kW |
| G-8001 | NO | Copper | 8.10kW | 8.72kW |
Applications
GHT manufactures ground-source heat exchanger designed for use with centralized heat / energy recovery ventilation (HRV/ERV) systems. Their highly efficient units pre-condition outdoor air temperatures by warming or cooling it to near ground temperature, eliminating 99% of the need for electrical pre-heating in most North American climates.
In summer, GHT systems pre-cool and dehumidify incoming air before it reaches the ventilation system - which can avoid or greatly reduce the need for air conditioning. With an extremely high coefficient of performance (COP), a lightweight and durable EPP casing, an easy installation process, the GHT is a hyper efficient and practical solution for improving ventilation efficiency.
Advantages
- Housing made of EPP - eliminates thermal bridge
- High heating and cooling efficiency (COP up to 200)
- Low air pressure drop
- LEFT and RIGHT setup possible
- Lightweight and easy to install
- Glycol/Brine pump with best energy efficiency
Properties
- Rated operating temperature -7.6°F to 140°F (-22°C to 60°C)
- Supply voltage: 230 V, 50-60Hz
- Power consumption:
- G-6000 and G-6001: 30 watts max
- G-8000 and G-8001: 40 watts max
- Heating / Cooling power up to:
- G-6000 and G-6001: 5.44kW / 6.02kW
- G-8000 and G-8001: 8.10kW / 8.72kW
- Airflow up to:
- G-6000 and G-6001: 353 CFM (600 m3/h)
- G-8000 and G-8001: 589 CFM (1000 m3/h)
Is this a geothermal heater?
Not exactly. It’s more accurate to call it a pre-conditioning system for ventilation. The G-6000 moderates incoming air temperature before it enters the supply side of your heat recovery ventilation (HRV) or energy recovery ventilation (ERV) system. It does not function independently—it only works in collaboration with an HRV or ERV.
Will this take care of all of my heating and cooling?
No. While the G-6000 significantly reduces the need for active heating and cooling by using the ground’s stable temperature, it does not replace a traditional HVAC system. Heating, cooling, and dehumidification will still need to be considered.
How does this system work?
Watch this video for a short summary:
How often does the system need maintenance?
The GHT ground loop system requires minimal maintenance. Regular filter changes (every 3-6 months depending on usage) and annual system checks are recommended to ensure optimal performance. In general, you should check and change the GHT filter at the same time you change your HRV / ERV Brink FLAIR filters.
Do you need to drill wells?
Not necessarily. The advantage of this system is that you can install the piping horizontally instead of drilling deep wells, which drastically reduces the cost of installation. However, in some cases, vertical boreholes may be used if space is limited.
Do you need access to a large yard?
No. The ground loop can be installed in various locations, including under a building’s foundation. If construction is already planned, integrating the system into excavation work can be cost-effective. If space is very limited vertical boreholes may be required.
How far underground does the geothermal ground loop system need to be?
A minimum of 5 feet (1.5 meters) is recommended. The deeper the pipes, the more stable the ground temperature, but beyond a certain depth, the cost of digging outweighs the energy-saving benefits. The ideal depth depends on local soil conditions and climate, so consulting GHT Installation guides and an energy modeler is recommended.
How long does the geothermal ground loop system need to be?
The required length depends on airflow requirements and soil conditions.
- As a rough estimate: 2.8 ft of length per 1 cfm of airflow (0.5 meters of length per 1 m3/hr of airflow).
- A minimum of 330 feet (100 meters) is typically required for smaller systems.
- Pipes must be placed in at least 16 inches (40 cm) of sand to prevent damage.
The best approach is to work with an energy modeler to determine the optimal loop size and depth for your climate and ventilation needs.
Who installs this system?
To install:
- A licensed plumber is needed to install the underground brine loop.
- An HVAC technician is required to install and integrate the G-6000 unit with your HRV or ERV.
Both will need to follow all guidance from GHT installation documentation and the advice of your energy modeler.
What is the expected lifespan of the ground loop system?
The ground loop component is designed for long-term operation, typically lasting 25+ years with proper installation and maintenance.
Receive a Quote for the GHT G-6000: Geothermal Pre-Conditioning
At this time, 475.Supply is quoting the GHT G-6000 system as a part of the Brink HRV/ERV system. Complete the Brink / GHT quote form below and a 475 representative will follow-up with you to speak about your project. Contact us to discuss sourcing the GHT G-6000 system independent of a Brink system.
