Looking Beyond the FOGATTI Tankless Water Heater Natural? 6 Alternatives Worth a Look
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You might be searching for fogatti tankless water heater natural alternatives because the FOGATTI model prioritizes precise temperature control over raw power. Its 5.1 GPM flow rate and ±1°F stability make it ideal for medium households, but it lacks the higher output needed for larger families. The unit’s compact outdoor design and remote control convenience are strengths, yet some buyers need more flow or specific venting options. The original also sits at a lower BTU level compared to other high-capacity units on the market. If you require more hot water simultaneously, you may find its 120,000 BTU output insufficient for whole-home use during peak demand.
We selected these 6 alternatives because their core specifications overlap with the FOGATTI unit while offering different performance profiles. Each option retains natural gas fuel and outdoor installation compatibility, ensuring they fit similar setups. You can compare flow rates ranging from 7.5 to 9.5 GPM to find a unit that matches your household size. Some models offer higher BTU outputs for faster heating, while others provide app connectivity for remote monitoring. This list helps you evaluate trade-offs between flow volume, physical dimensions, and feature sets without leaving the outdoor installation category.
Our top pick: FOGATTI 5.1 GPM Natural Gas Outdoor Heater.
How Alternatives Compare to FOGATTI
Ranein 8.5 GPM Outdoor Natural Gas Water Heater
The Ranein model offers an 8.5 GPM flow rate, significantly higher than the FOGATTI’s 5.1 GPM. This makes it better suited for large families running multiple fixtures simultaneously. It shares the outdoor natural gas design but weighs 44 pounds compared to FOGATTI’s 29.3 pounds. You gain capacity but lose the compact footprint. If your household needs more hot water volume for showers and appliances, this unit provides that extra headroom. It sacrifices the precise remote control feature found on the FOGATTI for raw flow performance. Choose this if you prioritize quantity of hot water over temperature precision.
APUS 190,000 BTU Outdoor Natural Gas Water Heater
The APUS unit matches the FOGATTI’s 190,000 BTU power but delivers it in a much smaller frame. Its dimensions are 6.54 inches wide and deep, compared to FOGATTI’s 15.5-inch width. This compact size saves wall space in tight outdoor areas. It includes app control, whereas the FOGATTI uses a remote panel. Both are natural gas outdoor heaters. The APUS is lighter at 42.5 pounds versus FOGATTI’s 29.3 pounds, but the size difference is notable. If you need high capacity in a small space with digital management, this is a strong alternative. It trades the physical remote for smart connectivity.
Rinnai 7.6 GPM Outdoor Natural Gas Water Heater
The Rinnai RE199eN provides a 7.6 GPM flow rate, which is higher than the FOGATTI’s 5.1 GPM. It is designed for non-condensing venting, offering installation flexibility in different outdoor setups. The unit is silver and weighs 53.3 pounds, making it heavier than the FOGATTI. It fits homes needing reliable hot water for multiple fixtures in compact spaces. The Rinnai model focuses on steady performance rather than the precise ±1°F control of the FOGATTI. If you need higher flow and specific venting options, this premium choice fits. It gives up remote convenience for robust mechanical reliability.
Westinghouse 8.1 GPM Outdoor Natural Gas Heater
The Westinghouse heater delivers 8.1 GPM and 180,000 BTU, outperforming the FOGATTI in raw power and flow. It also maintains a ±1°F temperature stability, matching the FOGATTI’s precision. This combination offers both high capacity and consistent heat. The unit is larger at 17.1 inches wide and weighs 42 pounds. It is built for outdoor whole-home use with stable temperature control. If you want the precision of the FOGATTI but need more flow for a larger household, this model bridges that gap. It provides certified outdoor durability without sacrificing temperature accuracy.
Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater
The Rheem RTG-95XLN-3 offers a 9.5 GPM flow rate, the highest on this list. It is designed for large families needing robust outdoor hot water. The unit weighs 39.3 pounds and features WiFi connectivity for remote monitoring. It uses non-condensing technology, similar to other high-output models. The FOGATTI lacks WiFi, so this model adds digital management. If you need maximum flow for a large home and want smart features, this is the top choice. It sacrifices the compact size of the FOGATTI for significantly higher water output. Ideal for busy households with high demand.
Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater
The Rinnai RUS75eN provides 7.5 GPM, which is higher than the FOGATTI’s 5.1 GPM. It is taller at 35 inches but narrower in width. This model is ideal for outdoor setups where venting flexibility matters more than maximum flow. It weighs less than some competitors but is still larger than the FOGATTI. The Rinnai focuses on steady hot water for multiple fixtures. It lacks the remote control and precise temperature stabilization of the FOGATTI. If you need a reliable outdoor unit with higher flow and specific venting needs, this is a practical option. It trades precision for capacity and installation adaptability.
Quick picks
Our 7 picks
FOGATTI 5.1 GPM Natural Gas Outdoor Heater
Best for: precise temperature control
- Fuel Type
- Natural Gas
- Flow Rate
- 5.1 GPM
- BTU
- 120,000 BTU
- Installation Location
- Outdoor
- Voltage
- 120V AC
- Temperature Control
- ±1°F
The FOGATTI InstaGas Comfort delivers 5.1 GPM at 120,000 BTU for outdoor use. Its compact 26.2-inch frame includes a remote control panel for indoor operation. Advanced water servo technology maintains temperature within ±1°F. It supports 2-4 outlets simultaneously, making it suitable for medium families. The unit features a copper heat exchanger and 304 stainless steel burner for durability.
Pros
- Precise temperature control within ±1°F
- Includes remote control panel
- Compact outdoor design
- CSA certified safety
Cons
- Lower 120,000 BTU output
- Smaller 5.1 GPM flow rate
- Limited to 2000 feet altitude
Good fit if
- You need precise temperature stability
- You want indoor remote control
- You have medium hot water needs
Skip if
- You require high flow rates
- You live at high altitudes
- You need indoor installation
Verdict: FOGATTI 5.1 GPM Natural Gas Outdoor Heater suits buyers prioritizing temperature precision and remote convenience over raw power. It is a solid choice for medium households in moderate climates.
Ranein 8.5 GPM Outdoor Natural Gas Water Heater
Best for: High-flow outdoor family use
- Fuel Type
- Natural Gas
- Flow Rate
- 8.5 GPM
- BTU
- 190,000 BTU
- Installation Location
- Outdoor
- Dimensions
- 15.1 × 15.1 × 24.3 inches
- Weight
- 44 pounds
View on Amazon: Ranein 8.5 GPM Outdoor Natural Gas Water Heater
The Ranein RHO19K-NG delivers 190,000 BTU and an 8.5 GPM flow rate for outdoor natural gas use. Its compact 24.3 x 15.1 x 8.1 inch design saves space. The unit includes anti-freeze protection and a bottom-mounted fan for safety. It suits families needing hot water for multiple outlets simultaneously.
Pros
- 190,000 BTU heating capacity
- 8.5 GPM maximum flow rate
- Compact 24.3-inch height
- Anti-freeze protection included
- Bottom-mounted fan for safety
Cons
- Not recommended for altitudes over 2,000 feet
- Weight of 44 pounds requires sturdy mounting
- Manual draining required for pressure relief in cold weather
Good fit if
- You need high flow for multiple bathrooms
- You have an outdoor installation space
- You want a compact unit for tight areas
Skip if
- You live above 2,000 feet elevation
- You require indoor installation
- You need automatic freeze drainage
Verdict: Ranein 8.5 GPM 190k BTU Outdoor Unit provides strong performance for large households. It fits buyers who prioritize flow rate and compact size for outdoor setups.
APUS 190,000 BTU Outdoor Natural Gas Water Heater
Best for: outdoor whole-home hot water with app control
- Fuel Type
- Natural Gas
- Flow Rate
- 8.1 GPM
- BTU
- 190,000 BTU
- Installation Location
- Outdoor
- Voltage
- 120V AC
- Temperature Control
- 95°F–149°F, ±1°F
View on Amazon: APUS 190,000 BTU Outdoor Natural Gas Water Heater
The APUS unit delivers 190,000 BTU and 8.1 GPM for whole-home use. It features smart temperature control via the Tuya app or wired controller, maintaining accuracy within ±1°F. The outdoor design measures 22.48 by 15.51 by 6.54 inches. It connects to 120V AC power and includes a 2-year full warranty on components. This model suits those seeking app integration and precise heating for multiple outlets.
Pros
- 190,000 BTU output for high demand
- 8.1 GPM flow rate supports 5-6 points
- App and wired controller with ±1°F accuracy
- 0.79 GPM minimum flow for weak pressure
- 2-year full warranty on all components
Cons
- Requires 120V AC electrical connection
- Outdoor installation only
- Warranty is shorter than industry standard
Good fit if
- You need app-based temperature adjustments
- You require high flow for multiple bathrooms
- You have an outdoor installation site with 120V power
Skip if
- You need indoor installation
- You prefer a wired-only interface without an app
- You want a warranty longer than 2 years
Verdict: APUS 190k BTU Natural Gas Outdoor offers precise digital control and high capacity for outdoor setups. It fits users who prioritize app connectivity and reliable flow for whole-home use.
Rinnai 7.6 GPM Outdoor Natural Gas Water Heater
Best for: compact outdoor installations needing 7.6 GPM
- Fuel Type
- Natural Gas
- Flow Rate
- 9.8 GPM
- BTU
- 199k BTU
- Installation Location
- Outdoor
- Dimensions
- 24.6 x 14.1 x 10.8 in
- Venting Type
- Non-Condensing
View on Amazon: Rinnai 7.6 GPM Outdoor Natural Gas Water Heater
The Rinnai RE199eN is a non-condensing outdoor natural gas tankless water heater. It delivers 7.6 GPM with a compact footprint of 24.6 x 14.1 x 10.8 inches. This unit suits homes needing reliable hot water for up to six fixtures. It features an LED screen for error codes and service reminders. The design prioritizes energy efficiency by heating water only when necessary.
Pros
- Provides 7.6 GPM flow rate for multiple simultaneous uses
- Compact outdoor dimensions of 24.6 x 14.1 x 10.8 inches
- LED screen displays error codes and service reminders
- Non-condensing design suitable for outdoor installation
Cons
- Lower flow rate of 7.6 GPM compared to 9.5 GPM competitors
- WiFi control module sold separately
- Heavier at 53.3 pounds than some alternatives
Good fit if
- You need a compact outdoor unit for limited space
- You want reliable performance for up to six fixtures
- You prefer non-condensing technology for outdoor use
Skip if
- You require more than 7.6 GPM flow rate
- You need built-in WiFi control without extra purchase
- You prefer indoor installation options
Verdict: Rinnai RE199eN Natural Gas Outdoor fits homes needing reliable hot water for multiple fixtures in compact outdoor spaces. Its 7.6 GPM flow rate and non-condensing design make it a practical choice for specific installation needs.
Westinghouse 8.1 GPM Outdoor Natural Gas Heater
Best for: outdoor whole-home hot water with stable temperature
- Fuel Type
- Natural Gas
- Flow Rate
- 8.1 GPM
- BTU
- 180,000 BTU
- Installation Location
- Outdoor
- Voltage
- 120V AC
- Temperature Control
- 95–158°F, ±1°F
View on Amazon: Westinghouse 8.1 GPM Outdoor Natural Gas Heater
The Westinghouse HS180A0G-NG is a natural gas tankless water heater rated for outdoor use. It delivers 8.1 GPM and 180,000 BTU to support three to five fixtures at once. Advanced self-modulating technology keeps water temperature stable within ±1°F. It weighs 42 pounds and measures 26.8 by 17.1 inches. This unit suits homes needing reliable whole-home hot water with precise temperature control.
Pros
- 8.1 GPM flow rate for multiple simultaneous fixtures
- ±1°F temperature stability prevents cold bursts
- 180,000 BTU output for strong heating performance
- CSA certified for outdoor safety and reliability
Cons
- Shorter 2-year limited warranty on the complete unit compared to industry standards
- Heavier 42-pound build requires sturdy mounting
- Outdoor-only design limits installation flexibility
Good fit if
- You need stable water temperature within ±1°F
- You want to run three to five fixtures at once
- You require a CSA-certified outdoor unit
Skip if
- You need indoor installation options
- You require a longer than 2-year unit warranty
- You prefer a lighter unit under 40 pounds
Verdict: Westinghouse 8.1 GPM Outdoor Natural Gas Heater delivers precise ±1°F stability and strong 180,000 BTU output for households running multiple fixtures outdoors. It fits buyers prioritizing temperature consistency and certified outdoor durability over extended warranty coverage.
Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater
Best for: Large homes needing high outdoor flow
- Fuel Type
- Natural Gas
- Flow Rate
- 9.5 GPM
- BTU
- 199,900 BTU/hr
- Installation Location
- Outdoor
- Temperature Control
- ±1°F
- Certification
- CSA
View on Amazon: Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater
The Rheem RTG-95XLN-3 delivers 9.5 GPM at a 35°F rise, powered by 199,900 BTUs. This non-condensing outdoor unit features a digital LED panel with ±1°F precision. It includes freeze protection and flame failure safety. The metal cabinet supports wall mounting. You get 15-year heat exchanger coverage. This model suits large homes needing high flow rates without condensing complexity.
Pros
- 9.5 GPM flow rate for multiple simultaneous showers
- 199,900 BTU/hr output for high performance
- ±1°F digital temperature precision
- 15-year heat exchanger warranty
Cons
- Outdoor installation only
- Non-condensing venting type
- Professional installation required
Good fit if
- You need 9.5 GPM for whole-house use
- You have outdoor space for mounting
- You want 15-year heat exchanger coverage
Skip if
- You need indoor installation
- You prefer condensing efficiency
- You want self-installation
Verdict: Rheem RTG-95XLN-3 9.5 GPM Natural Gas Heater provides high flow for large families. It fits outdoor setups requiring robust, non-condensing performance.
Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater
Best for: outdoor homes needing 7.5 GPM flow
- Fuel Type
- Natural Gas
- Flow Rate
- 7.5 GPM
- Installation Location
- Outdoor
- Dimensions
- 35 x 14.5 x 22 inches
View on Amazon: Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater
The Rinnai RUS75eN delivers 7.5 GPM of hot water using natural gas. It is designed for outdoor installation and features a compact footprint measuring 35 by 14.5 by 22 inches. This unit supports up to six appliances simultaneously. It offers multiple venting options, including PVC or CPVC. The system provides endless hot water while conserving energy by heating only when needed.
Pros
- 7.5 GPM flow rate for high demand
- Supports up to six appliances at once
- Compact outdoor design saves space
- Flexible venting options including PVC
Cons
- Lower flow rate than competitors offering 8.5 or 9.5 GPM
- Requires professional installation for safety
- Labor warranty limited to one year
Good fit if
- You need a reliable 7.5 GPM outdoor unit
- You want flexible venting options for placement
- You prefer a compact footprint for tight spaces
Skip if
- You require more than 7.5 GPM flow
- You want an indoor installation model
- You prefer a longer labor warranty period
Verdict: Rinnai RUS75eN 7.5 GPM Outdoor Natural Gas fits homes needing steady hot water for multiple fixtures without taking up much space. It is ideal for outdoor setups where venting flexibility matters more than maximum flow volume.
Specifications side by side
| Spec | FOGATTI 5.1 GPM Natural Gas Outdoor Heater | Ranein 8.5 GPM Outdoor Natural Gas Water Heater | APUS 190,000 BTU Outdoor Natural Gas Water Heater | Rinnai 7.6 GPM Outdoor Natural Gas Water Heater | Westinghouse 8.1 GPM Outdoor Natural Gas Heater | Rheem RTG 9.5 GPM Outdoor Natural Gas Tankless Heater | Rinnai 7.5 GPM Outdoor Natural Gas Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas |
| Flow Rate | 5.1 GPM | 8.5 GPM | 8.1 GPM | 9.8 GPM | 8.1 GPM | 9.5 GPM | 7.5 GPM |
| BTU | 120,000 BTU | 190,000 BTU | 190,000 BTU | 199k BTU | 180,000 BTU | 199,900 BTU/hr | not specified |
| Installation Location | Outdoor | Outdoor | Outdoor | Outdoor | Outdoor | Outdoor | Outdoor |
| Voltage | 120V AC | not specified | 120V AC | not specified | 120V AC | not specified | not specified |
| Temperature Control | ±1°F | not specified | 95°F–149°F, ±1°F | not specified | 95–158°F, ±1°F | ±1°F | not specified |
| Certification | CSA | not specified | not specified | not specified | CSA | CSA | not specified |
| Dimensions | 23.9 x 15.5 x 15.5 inches | not specified | 22.48 × 15.51 × 6.54 in | 24.6 x 14.1 x 10.8 in | 26.8 x 17.1 x 17.1 inches | 20.8 x 13.5 x 9.4 inches | 35 x 14.5 x 22 inches |
| Use | Whole House | not specified | not specified | not specified | Whole House | not specified | not specified |
| Venting Type | not specified | not specified | not specified | Non-Condensing | not specified | Non-Condensing | not specified |
| Features | Digital Display | not specified | not specified | not specified | not specified | WiFi | not specified |
| Weight | 29.3 pounds | 44 pounds | 42.5 pounds | 53.3 pounds | 42 pounds | 39.3 pounds | not specified |
| Size | 5.1 GPM, Outdoor Installation | 8.5 GPM Outdoor | not specified | 9.8 GPM | not specified | 9.5 GPM (No WiFi) | 7.5 GPM |
| Color | Gray | Gray-NG | Gray | Silver | Grey 81NO | Gray | Outdoor Installation |
| Model | InstaGas Comfort | RHO19K-NG | AP-AWH-W26NG | REU-VE2737WD-US-N | HS180A0G-NG | RTG-95XLN-3 | RUS75eN |
If you also need drinking water filtration, you can compare specifications for apec water apec tankless ro water alternatives.
Frequently asked questions
Which outdoor natural gas heater has the highest flow rate?
The Rheem RTG-95XLN-3 offers the highest flow rate at 9.5 GPM. This makes it suitable for large homes with multiple simultaneous hot water demands. It is a non-condensing unit designed for outdoor installation. The unit weighs 39.3 pounds and measures 13.5 inches in width. It provides robust performance for high-volume usage.
Is there a compact option for outdoor natural gas heating?
The APUS 190,000 BTU model is highly compact. It measures only 6.54 inches in both width and length. Despite its small footprint, it offers 22.5 inches of height and weighs 42.5 pounds. This unit is designed for outdoor natural gas installation. It includes app control for precise digital management of your hot water supply.
Can I find a natural gas heater with WiFi connectivity?
Yes, the Rheem RTG-95XLN-3 includes WiFi connectivity. This feature allows you to monitor and control the unit remotely. It delivers a 9.5 GPM flow rate for large households. The unit is non-condensing and designed for outdoor use. You can manage settings via an app for added convenience and efficiency.
Which unit is best for large families needing high flow?
The Ranein 8.5 GPM Outdoor Natural Gas Water Heater is ideal for large families. It provides an 8.5 GPM flow rate for strong performance. The unit weighs 44 pounds and measures 15.1 inches wide. It is designed for outdoor natural gas installation. This model prioritizes high flow capacity for multiple simultaneous fixtures.
Does the Westinghouse model offer stable temperature control?
The Westinghouse 8.1 GPM Outdoor Natural Gas Heater provides precise temperature stability. It maintains a stability of ±1°F during operation. The unit delivers 180,000 BTU of output for consistent heating. It is designed for outdoor natural gas installation. This makes it suitable for households prioritizing temperature consistency across multiple fixtures.
What is the lightest outdoor natural gas heater on the list?
The FOGATTI 5.1 GPM Natural Gas Outdoor Heater is the lightest unit. It weighs only 29.3 pounds. The model measures 15.5 inches in width and length. It is designed for outdoor natural gas installation. This lightweight design makes it easy to handle and install in various outdoor settings.
Is there a premium outdoor natural gas option available?
The Rinnai REU-VE2737WD-US-N is listed as the premium option. It offers a 7.6 GPM flow rate for reliable hot water. The unit is non-condensing and designed for outdoor installation. It weighs 53.3 pounds and measures 14.1 inches wide. This model suits homes needing consistent performance in compact outdoor spaces.