Looking to upgrade your RV or camper’s hot water system? Girard’s tankless water heaters are among the most popular choices for mobile living, promising endless hot water, space-saving design, and reliable performance even on the road. But does the Girard tankless system deliver in real-world camping, or is it just hype? This complete review breaks down Girard’s top models, who benefits most, key features, honest pros and cons, and how Girard stacks up to the competition.
Quick Picks: Best Girard Tankless Water Heaters
- Best Overall (12V):
Girard 2GWHAM On-Demand Tankless Water Heater – Most popular and reliable for all types of RVs and trailers. - Best for Large RVs:
Girard GSWH-2 Tankless Water Heater – Upgraded controls and higher GPM for multi-person use. - Best Value:
Girard GSW-16A Tankless Water Heater – Budget-friendly and fits most RV cutouts, with strong basic performance.
Who Should Choose a Girard Tankless Water Heater?
- RV & Camper Owners: Designed specifically for RVs—easy retrofit for Atwood, Suburban, or other 6/10-gallon tanks.
- Van Lifers & Tiny Homes: Runs on propane and 12V—no need for big electric upgrades or generator-only operation.
- Full-Time Travelers: Enjoy endless, consistent hot water no matter how long your shower—or how many people hop in.
- Anyone Wanting to Save Propane & Space: Heats water only when needed, no standby heat loss or big, bulky tank taking up storage.
Buyer’s Guide: What to Look for in a Girard Tankless RV Water Heater
- BTU Rating: Girard models range from 34,000 to 42,000 BTU for quick, powerful hot water delivery.
- GPM Output: Look for 1.5–2.5 GPM for typical RV showers and sinks—plenty for solo or couple use; larger models are better for families.
- 12V Operation: All Girard units use 12V power for ignition and electronics—no shore power needed.
- Simple Controls: Most models have an inside wall controller for precise temp adjustment (usually 95°F–124°F).
- Retrofit Compatibility: Designed to slide into most standard RV water heater openings—little to no modification required.
- Warranty & Support: Girard is known for responsive customer service and a solid 2-year warranty.
Detailed Reviews: Top Girard Tankless Water Heater Models
Girard 2GWHAM On-Demand Tankless Water Heater
- BTU: 42,000; GPM: 1.7–2.0 (plenty for standard RV use)
- Easy replacement for Atwood/Suburban 6–10 gallon models
- Fully automatic operation—no pilot light, no matches needed
- Digital wall controller lets you set temp precisely inside the RV
- Works on 12V, only draws power when heating water
- Low NOx emissions and CSA safety certified
Pros:
- Very reliable and quiet operation
- Endless hot water for normal shower and kitchen use
- Fast, mostly tool-free installation in most RVs
- Trusted by RV manufacturers and techs nationwide
Cons:
- Not designed for residential or whole-house use
- Pressure drop if running multiple showers at once
Final Verdict: The best all-around tankless RV heater for reliability and performance—great value for any mobile setup.
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Girard GSWH-2 Tankless Water Heater
- Upgraded 42,000 BTU burner and 2.0 GPM output
- Wall controller for temp control from inside your RV
- Integrated freeze protection and stainless steel construction
- Low profile exterior door—looks great and installs flush
- Works with standard 12V/propane RV power sources
Pros:
- Excellent temp stability even when water flow changes
- Great for families or full-timers who want long showers
- Very quiet and efficient—saves propane compared to tank
Cons:
- Some users wish for even more GPM for simultaneous showers
- Wall controller must be installed—extra step for some retrofits
Final Verdict: The “upgrade pick” for bigger RVs or anyone who loves extra-long showers.
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Girard GSW-16A Tankless Water Heater
- BTU: 34,000; GPM: 1.5–1.8, efficient and compact
- Affordable, fits most standard cutouts (sub-16″ width)
- Basic manual temperature adjustment on front panel
- Simple install and low maintenance requirements
Pros:
- Low price and reliable for small campers or travel trailers
- Very energy efficient—only uses gas and power when needed
- Great for solo travelers or couples
Cons:
- No digital wall controller (basic manual dial only)
- Lower GPM than larger Girard models
Final Verdict: Best value Girard model for budget-minded RV owners or those with simple needs.
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Comparison Table: Girard Tankless Water Heater Models
| Model | BTU | Max GPM | Wall Controller | Freeze Protection | Best For | Price Link |
|---|---|---|---|---|---|---|
| 2GWHAM | 42,000 | 2.0 | Yes | Yes | Most RVs | View |
| GSWH-2 | 42,000 | 2.0 | Yes | Yes | Large RVs | View |
| GSW-16A | 34,000 | 1.8 | No (manual) | No | Small campers | View |
FAQ: Girard Tankless RV Water Heaters
- Will a Girard tankless fit my RV?
Most models are direct drop-in replacements for 6- or 10-gallon Atwood/Suburban tanks. Always measure your opening before ordering. - Do they require shore power or a generator?
No, Girard heaters run on propane and 12V DC—no generator or 120V needed. - How long does hot water last?
As long as you have propane and water, you’ll get unlimited hot water. No recovery time! - Is installation DIY friendly?
Yes, for most RV owners with basic tools. Some may need minor wiring or propane adjustments. Always check for leaks and test before use. - Can I use a Girard tankless heater in a house?
These are engineered for mobile use, not whole-house residential applications. - What maintenance is required?
Flush annually, clean air inlets, and check for leaks. Always winterize if storing your RV in freezing temps.
Conclusion
Girard tankless water heaters are a proven upgrade for any RV, offering endless hot water, efficient propane use, and dependable performance trip after trip. Whether you travel full-time or just want a better camp shower, Girard models make it easy to enjoy comfort on the road. Choose the model that fits your rig, follow the simple install, and get ready for real hot showers—no matter where your next adventure takes you!