Original GHT Solutions Manufacturer

Nature's Energy,
Engineered.

Plug-and-play geothermal pre-conditioning modules for HRV/ERV systems. Eliminate frost loops, actively dehumidify in summer, and guarantee 100% continuous air balance 365 days a year.

Max Airflow 1000 m³/h
Frost Protect (Down To) -30 °C

Seamlessly Integrates With Top HVAC Brands:

Zehnder NILAN Brink Enervent
GHT Geothermal Module
Global Installations 1,200+
Max Output Capacity Up to 8.0 kW
⭐ New Interactive Tool

Stop Guessing.
Calculate Your Specs.

Take the guesswork out of geothermal pre-conditioning. Use our free engineering simulator to calculate exact trench lengths, free cooling capacity, and the true financial ROI for your specific climate.

  • ✓ Trench Length Sizing GHT Simulator
  • ✓ Condensate & Latent Cooling
  • ✓ Downloadable PDF Report
Launch Simulator ➔
Output Preview
Free Cooling Power: 3.83 kW
Dehumidification: 3.2 L/h
Annual Savings: € 470 / yr
System ROI 4.5 Yrs

BEYOND ENERGY SAVINGS: THE GHT ADVANTAGE

While standard HRV/ERV systems struggle in extreme temperatures, the GHT Geothermal Pre-conditioning module acts as a "force multiplier" for your ventilation—protecting your building's physics and delivering unmatched indoor climate stability.

Building Risks Avoided

  • Winter Defrost Imbalance Prevents negative pressure cycles during standard defrost modes, which draw freezing air through micro-cracks and compromise building integrity.
  • Ductwork Condensation & Mold Strips excess moisture from humid summer air, physically stopping mold spores from developing inside your ventilation ducts.
  • Summer Overheating (Fake Bypass) Unlike a standard HRV bypass that blows hot +30°C (+86°F) outdoor air directly indoors, GHT actively cools the air first.
  • Peak Electricity Spikes Completely removes the reliance on energy-hungry electric pre-heaters (PTC/TEN) during sub-zero winter days.

Premium Comfort Gained

  • True "Free Cooling" Utilizes the earth's natural thermal inertia to cool incoming summer air, costing only the minimal power of a small circulation pump.
  • Active Dehumidification Lowers absolute humidity to create a crisp, highly comfortable indoor climate, eliminating the "stuffy" and muggy summer feeling.
  • Maximized HRV/ERV Lifespan Keeps your core ventilation unit operating in its optimal, safe temperature zone year-round, extending equipment longevity and efficiency (COP).
  • 100% Guaranteed Air Balance Delivers continuous, uninterrupted, and perfectly balanced fresh air 365 days a year, regardless of extreme outdoor weather events.

How GHT Pre-Conditioning Works

Forget inefficient electric pre-heaters and fake summer bypasses. See how harnessing the earth's stable temperature guarantees 100% continuous air balance and true free cooling.

GHT Winter Protection
Winter Mode

Frost-Free Protection

At -22°C, a standard HRV will freeze or force its electric pre-heater to run continuously. The GHT module uses ground warmth to pre-heat incoming air safely above freezing.

  • 🛑 Zero electric pre-heater usage required
  • ✅ Continuous 100% air balance maintained
  • ✅ Prevents negative pressure inside the building
GHT Summer Cooling
Summer Mode

Free Cooling & Dehumidification

A standard bypass simply blows hot +30°C outdoor air into your home. The GHT module uses the earth's natural thermal inertia to actively strip heat and humidity from the air.

  • ❄️ Passive cooling dropping temps to ~17°C
  • 💧 Physical condensation strips mold-causing moisture
  • 📉 Relieves the thermal load on AC systems
The Geothermal Source

Where Does the Energy Come From?

Harnessing the earth's stable underground thermal inertia via a closed-loop trench system. Toggle between heating and cooling seasons to see how the ground protects your building year-round.

Winter Ground Loop
Winter Ground Dynamics

Extracting Deep Earth Warmth

When outdoor temperatures drop to -22°C, the fluid circulating through the horizontal trench loop absorbs stable subterranean heat (+6°C). This pre-warmed fluid travels directly into the GHT module, ensuring the air entering your ventilation system is safely protected from freezing.

  • ✔ Stable ground temperature (~+6°C)
  • ✔ Shallow trench installation (approx. 1.2 - 1.5m deep)
  • ✔ Closed loop glycol system for ultimate reliability

1200+

Successful installations

3 706 560+ 

kg CO2 reduced 

5 702 400+

kWh consumed less

12+

Years in the market

Our Specialized Solutions

Our high-performance components are engineered to guarantee maximum energy savings and healthy air in any facility. Explore our product range below to find the ideal solution for enhancing the performance of your ventilation project.

NEW
PureFlow 200

PureFlow 200

EPP Filter Box for Ventilation Systems – Advanced Air Filtration for Every Space.

NEW
AirHC1000

AirHC1000

Advanced Warm Water Post Heater/Cooler. Max airflow up to 1000 m³/h. Insulated EPP housing.

G-Series Barebone

"G-2001 to G-8001" Series

Streamlined pre-conditioning unit. Maximum air flow up to 1000 m³/h. Insulated EPP housing.

G-Series Plug and Play

"G-2000 to G-8000" Series

Complete unit with integrated class A circulation pump and safety group in insulated EPP housing.

View Full Catalog & Tech Specs ➔
Technical Overview

Deep Dive: Watch the GHT Physics in Action

See exactly how our geothermal pre-conditioning modules integrate with standard HRV/ERV systems to deliver massive energy savings and true summer dehumidification.


Ready to Upgrade Your Projects?

Join a network of professionals delivering true geothermal pre-conditioning. Whether you're an HVAC installer, distributor, or engineer, we have a partnership model designed for your growth.