Truma AquaGo vs Girard: which fits your camp life?

The hard part of this choice is not getting hot water. Both units can do that. It is getting the shower you want. And doing so without a surprise bill or repair problem.

Here we compare the Truma AquaGo comfort with the Girard GSWH-2. Those exact names matter. AquaGo comfort plus is a different system. A vague quote for a “Truma” or “Girard” is not enough.

Do you pause the shower to save water? The AquaGo's small water vessel helps steady the heat when you start again. On a tight budget? The fitted price and a local repair shop may settle the choice.

The two water heaters at a glance

Price checked October 15, 2026. The Girard figure excludes any extra door, trim, fitting, and tax. It is not a like-for-like comparison with a complete Truma fitting.

Truma AquaGo comfort: the case for steady heat

The AquaGo comfort sits between a simple tankless water heater and a large storage tank. Its small water vessel helps limit outlet changes in heat. That matters when you stop the flow, then start it again.

Picture rinsing soap out of your hair after a brief pause. A burst of cold water can make you leave the tap running next time. Smoother starts can make short showers less fussy. They do not guarantee a fixed amount of water saved.

The comfort mode keeps water in the unit warm. That has a cost in fuel and power. The benefit is readiness when you open the hot water faucet. Ask the installer to explain each mode before your first trip.

Truma lists hot water at flow rates below 0.4 gallons per minute. That is useful context for a low-flow shower. It does not mean every faucet setting will behave the same in every RV. The pump, pipes, and taps are still part of the system.

Girard: adjustable heat without a storage tank

The Girard GSWH-2 uses sensors and a burner control to heat water as it passes through. The wall panel lets you change the set temperature and see fault codes.

That control can give you hot water set for a shower. You may not need to mix in much cold water. Follow Girard's manual for setup. Reducing flow through the heater too far can affect the burner.

Do not treat “tankless” as a promise that all tap habits stay the same. Ask the installer to show you the new unit. Turn the shower off and back on. See how it differs from your old tank heater. Try the kitchen hot water faucet as well.

Girard may be the better value if a local shop can fit it for less and has the parts you need. Get that price in writing. A low price on the box does not tell you the cost of the finished job.

What “instant hot water” really means

Hot water still needs to travel from the heater to the tap. If the bathroom sits far from the unit, water can cool in the line between uses. The first few seconds at the faucet may still feel cool.

AquaGo comfort plus adds a loop to keep hot water moving through suitable pipes. Do not assume the ordinary AquaGo comfort has the same plumbing. Adding comfort plus to an older rig may take more work.

Ask which model the quote covers and where hot water is kept warm. The answer should refer to your actual pipes, not just a product slogan. A good installer can explain what happens at the farthest tap.

If you are still deciding whether to replace a tank heater at all, our RV water-heater buying guide covers that wider choice.

Dry camping: the tanks still set the limit

At a full-hookup campground, a longer shower may be easy to manage. Dry camping changes the math. Every gallon you draw leaves the fresh tank and takes up room in the gray tank.

A tankless water heater can keep adding heat while you have fuel, power, and water. It cannot keep adding fresh water. Even a smooth system needs short showers. That helps your water last for days.

In a discussion of tankless water heaters, some owners report good results. Others note flow limits and water lost while waiting. Those reports are useful questions to bring to a dealer. Different rigs and tap layouts make them poor proof that all rigs will work the same.

Before you replace anything, track a normal day. Note how much water goes to showers, dishes, and hand washing. Then work out what problem you need to solve. Less waiting and less water use are related goals, but they are not the same.

A portable waste tank may ease a gray-tank limit at some campgrounds. It adds a heavy dump trip, though. Buy it only if the site allows it and you have a safe way to move it.

Installation: compare the full quote

Both water heaters need a suitable sidewall opening and correct venting. Check the depth behind the wall as well as the visible door. Pipes, wiring, and nearby framing can change the work involved.

A trained technician should check the gas supply, water system, and 12V connection. These units use propane for heat, not diesel. A battery connection does not make either unit an electric water heater.

Truma offers retrofit services at selected factory locations. Ask about local dealer options, travel time, and the whole fitted price. The public service page invites an inquiry rather than giving a single fitted price.

For Girard, ask whether the quote includes the correct door kit and trim ring. Have the shop name the old heater and the exact replacement. “It should fit” is not enough detail for a job that opens the RV wall.

Keep a copy of the written quote. It should show parts, labor, tests, warranty terms, and any work that might cost extra. That makes two offers much easier to compare.

Cold weather and care

Freezing temperatures can damage a water system. Built-in freeze features have conditions and limits. They may need both power and fuel. They do not cover every pipe in the RV.

Use the exact manual for your model when you drain or winterize it. Do not copy a process from another brand. A switch left on is not enough to protect a rig through a freeze.

The AquaGo has a set process to remove scale and a drain lever. Learn the proper steps and use the supplies named in the manual. Plan room to reach the service points after it is installed.

Girard needs regular care. Keep the exterior opening clear and follow the manual's checks and winterizing steps. If the heater will not stay lit, have the cause checked rather than altering safety parts.

Service access can outweigh a feature

A good heater is less useful when the nearest trained repair shop is far away. Before purchase, call a shop near home or along your usual route. Ask whether it works on the exact model and handles warranty claims.

Do not assume that a shop which sells the brand repairs every unit. Ask about appointment lead times and common replacement parts. Ask these questions whether you live in your rig or use it for short trips.

No sound evidence here shows how often either brand fails. Owner reports describe one person’s experience. They cannot tell you how many units ran without trouble or prove that one brand lasts longer.

Which would we choose?

Our pick is AquaGo comfort if you use the shower often and want steady heat. First, make sure you have a suitable installer nearby. Its small water vessel helps solve a real problem: sudden shifts in shower heat.

Choose Girard when the complete quote is much lower and local support is strong. Have the shop demonstrate the flow settings and explain what to expect at each faucet.

Keep a working tank heater if it already meets your needs. An upgrade should fix a problem you have, not create a new project. If the bathroom stays damp, look at a roof-fan upgrade. That may do more for your comfort at camp.