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J. L. Wingert GL15-E1-1 Economy 15 gallon Glycol Feed System with Low Level Control

Sale price $3,288.45 Regular price $3,986.00

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Product Overview

The J. L. Wingert GL15-E1-1 Economy 15 Gallon Glycol Feed System with Low Level Control is a compact and efficient solution designed to maintain proper fluid levels and pressure in closed-loop heating and cooling systems. Featuring a durable polyethylene glycol feed tank, integrated feed pump, and low-level control protection, this system helps ensure reliable operation while reducing the risk of air infiltration, pressure loss, and equipment damage. Ideal for smaller commercial facilities, hydronic heating systems, and chilled water applications, the GL15-E1-1 provides dependable automatic fluid replenishment with minimal maintenance requirements.

Why Choose the J. L. Wingert GL15-E1-1?

Maintaining proper fluid levels is critical for the performance and longevity of closed-loop systems. The GL15-E1-1 automatically replenishes fluid when required, helping operators maintain optimal system conditions while minimizing manual monitoring.

Key Benefits

✔ Automatically maintains system pressure

✔ Helps prevent air intrusion and corrosion

✔ Reduces maintenance requirements

✔ Supports glycol and water treatment programs

✔ Integrated low-level control protection

✔ Compact footprint for smaller installations

✔ Reliable performance in commercial HVAC systems

✔ Durable polyethylene reservoir construction

Key Features

15-Gallon Reservoir Capacity

The 15-gallon storage tank is ideal for smaller heating and cooling systems that require dependable make-up fluid management without occupying excessive floor space.

Automatic Fluid Replenishment

The integrated pump assembly automatically adds fluid when pressure levels drop, helping maintain system efficiency and performance.

Low-Level Control Protection

Built-in low-level control helps safeguard equipment by alerting operators when fluid levels need replenishment, reducing the risk of pump damage and unexpected downtime.

Compact Design

The GL15-E1-1 is engineered for installations where space is limited while still providing reliable make-up water and glycol feeding capabilities.

Designed for Closed-Loop Systems

This unit supports proper operation of hydronic heating systems, chilled water loops, and other applications where pressure stability is essential.

Common Applications

The GL15-E1-1 is commonly installed in:

Commercial HVAC Systems

  • Chilled water systems
  • Hydronic heating systems
  • Heat pump systems
  • Closed-loop water systems

Small Commercial Facilities

  • Office buildings
  • Retail stores
  • Medical offices
  • Educational facilities

Mechanical Room Installations

  • Equipment replacement projects
  • System upgrades
  • New HVAC installations

Technical Specifications

Specification Details
Model GL15-E1-1
Manufacturer J. L. Wingert
Tank Capacity 15 Gallons
Tank Material Polyethylene
Control Type Low Level Control
Application Closed-Loop Systems
Fluid Compatibility Glycol Solutions & Water
Operation Automatic Feed System
Installation Type Commercial HVAC Applications

Compare J. L. Wingert Glycol Feed Systems

Feature GL15-E1-1 GL30-E1-1 GL50-E1-1
Tank Capacity 15 Gallons 30 Gallons 55 Gallons
Low Level Control Yes Yes Yes
Automatic Feed Operation Yes Yes Yes
Reservoir Material Polyethylene Polyethylene Polyethylene
Recommended System Size Small Medium Large
Commercial HVAC Applications Yes Yes Yes
Industrial Applications Limited Moderate Extensive

Which Glycol Feed System Is Right for Your Application?

System Type Recommended Model
Small Hydronic Systems GL15-E1-1
Medium Commercial Buildings GL30-E1-1
Large Commercial Facilities GL50-E1-1
Industrial Process Systems GL50-E1-1


The GL15-E1-1 is the preferred choice for smaller systems that require dependable automatic make-up fluid management without the need for larger reservoir capacities.

How a Glycol Feed System Works

A glycol feed system monitors pressure within a closed-loop system and automatically introduces make-up fluid when pressure levels fall below desired operating conditions. This process helps maintain consistent system performance, improves equipment protection, and reduces the potential for air infiltration and corrosion.

By maintaining proper fluid volume and pressure, facilities can improve energy efficiency and reduce costly maintenance issues over time.

Ideal For

This model is frequently selected by:

  • Mechanical contractors
  • HVAC technicians
  • Facility managers
  • Building engineers
  • Maintenance professionals
  • Commercial property owners

Need Help Selecting the Right Glycol Feed System?

Not sure if the GL15-E1-1 is the best fit for your application?

Our specialists can help you:

  • Select the correct system size
  • Determine fluid capacity requirements
  • Recommend compatible accessories
  • Provide volume pricing
  • Answer installation questions

👉 Request a Quote Today

Or call (623) 624-5662 to speak with a product specialist.

Frequently Asked Questions

1. What is the purpose of the GL15-E1-1 Glycol Feed System?

This system automatically maintains proper fluid levels and pressure within closed-loop heating and cooling systems, helping improve reliability and equipment protection.

2. Why is low-level control important?

Low-level control helps prevent pump damage and alerts operators when fluid levels need replenishment, improving system reliability.

3. Can this system be used with glycol solutions?

Yes. The GL15-E1-1 is designed for use with glycol solutions as well as water-based closed-loop systems.

4. Does the unit operate automatically?

Yes. The integrated feed system automatically supplies make-up fluid when required to maintain proper pressure.

5. Can it be used in chilled water systems?

Absolutely. The GL15-E1-1 is commonly installed in chilled water, hydronic heating, and heat pump applications.

Download Resources:

Click here the data sheet

Click here for the brochure

Click here for instruction sheet