---
product_id: 31156021
title: "Rheem G100-80 Natural Gas Universal Commercial Water Heater, 100 Gallon"
brand: "rheem"
price: "€ 18173.26"
currency: EUR
in_stock: false
reviews_count: 2
url: https://www.desertcart.com.cy/products/31156021-rheem-g100-80-natural-gas-universal-commercial-water-heater-100
store_origin: CY
region: Cyprus
---

# Compact 28.25x28.25x65.75 inch footprint 75,000 BTU powerful heat output Universal tank design for easy replacement Rheem G100-80 Natural Gas Universal Commercial Water Heater, 100 Gallon

**Brand:** rheem
**Price:** € 18173.26
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Elevate your commercial hot water game with Rheem’s universal powerhouse!

## Quick Answers

- **What is this?** Rheem G100-80 Natural Gas Universal Commercial Water Heater, 100 Gallon by rheem
- **How much does it cost?** € 18173.26 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/31156021-rheem-g100-80-natural-gas-universal-commercial-water-heater-100)

## Best For

- rheem enthusiasts

## Why This Product

- Trusted rheem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Backed by a 3-year tank and 1-year parts warranty when installed by licensed pros.
- • **Space-Smart Design:** Compact footprint and patented multi-flue tank design maximize installation flexibility.
- • **Powerhouse Performance:** Delivers a robust 75,000 BTUs to meet demanding commercial hot water needs.
- • **Universal Compatibility:** Engineered with a universal tank design for seamless retrofit and new installations.
- • **Efficiency Meets Innovation:** Low profile automatic flue damper optimizes energy use and reduces heat loss.

## Overview

The Rheem G100-80 is a 100-gallon natural gas commercial water heater delivering 75,000 BTUs of heat. Its universal tank and patented multi-flue design simplify installation and maximize space efficiency. Designed for heavy-duty applications, it features a low profile automatic flue damper for improved energy performance and comes with a solid warranty when installed by licensed technicians.

## Description

From the Manufacturer Universal Gas Commercial Water Heaters are specifically designed to minimize the difficulty of replacing failed water heaters and are versatile for new installations. These products are designed for applications requiring large quantities of hot water.

Review: States 75,000 BTUs a commercial 100 gallon hot water heater produces 199,000 BTUs - A 100 gallon gas hot water heater produces 199,000 BTUs this advertisement is very questionable. I would look into it before purchasing this advertisement shows 75,000 BTUs, which is more line for a residential use.
Review: Five Stars - Just what I expected

## Features

- 75,000 BTU
- Universal tank design
- Universal space saver design
- Patented multi-flue tank design
- Low profile automatic flue damper

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003UHUWPI |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #1,730,619 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,275 in Water Heaters |
| Brand | Rheem |
| Certification | AGA, ASME, CSA |
| Color | Silver |
| Customer Reviews | 2.0 2.0 out of 5 stars (2) |
| Date First Available | July 29, 2009 |
| Global Trade Identification Number | 00020352562094 |
| Heat Output | 75000 British Thermal Units |
| Is Discontinued By Manufacturer | No |
| Is Electric | No |
| Item Package Quantity | 1 |
| Item Weight | 540 pounds |
| Item model number | G100-80 |
| Manufacturer | Rheem |
| Mounting Type | Floor |
| Part Number | G100-80 |
| Product Dimensions | 28.25 x 28.25 x 65.75 inches |
| Size | 100 Gallon |
| Special Feature | Patented multi-flue tank design, Low profile automatic flue damper |
| Special Features | Patented multi-flue tank design, Low profile automatic flue damper |
| Style | Automatic |
| UPC | 020352562094 |
| Warranty Description | 3 years tank and 1 year parts. Warranties are only valid if unit was installed by a properly licensed technician |

## Product Details

- **Brand:** Rheem
- **Capacity:** 360 Liters
- **Color:** Silver
- **Power Source:** Natural Gas
- **Special Feature:** Patented multi-flue tank design, Low profile automatic flue damper

## Images

![Rheem G100-80 Natural Gas Universal Commercial Water Heater, 100 Gallon - Image 1](https://m.media-amazon.com/images/I/51kQEpcOuUL.jpg)

## Customer Reviews

### ⭐ States 75,000 BTUs a commercial 100 gallon hot water heater produces 199,000 BTUs
*by D***N on October 7, 2025*

A 100 gallon gas hot water heater produces 199,000 BTUs this advertisement is very questionable. I would look into it before purchasing this advertisement shows 75,000 BTUs, which is more line for a residential use.

### ⭐⭐⭐⭐⭐ Five Stars
*by S***C on December 23, 2014*

Just what I expected

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**Shop now:** [https://www.desertcart.com.cy/products/31156021-rheem-g100-80-natural-gas-universal-commercial-water-heater-100](https://www.desertcart.com.cy/products/31156021-rheem-g100-80-natural-gas-universal-commercial-water-heater-100)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-08*