1. First Pick – Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
- 94-Percent Energy efficient with stainless-steel condensing heat exchanger
- Intelligent electronic controls designed to increase energy efficiency and safety
- Third party efficiency listed by AHRI
- Up to 38-Feet of 3-Inch PVC Pipe or 5-Feet of 2-Inch PVC Pipe
- Low Nox Version
Rheem RTGH-95DVLN 9.5 GPM Pros:
- The unit could be self-installed provided you are marginally savvy with plumbing although you should be ready to put in up to five hours of work.
- You might be tempted to use more hot water than you would normally, because the unit makes hot water fairly quickly, and it is a massive upgrade from older units.
- People reportedly saved a lot on gas money as it is energy efficient. However, the behavioral tendencies of individuals to turn on the hot water from things such as merely rinsing a single plate did not allow them to save as much as they could.
- The unit has a high return on investment as you could get up to $300 on the unit when a tax return is filed. In other cases, people reportedly saved up to a $100 per year.
- There were no leakages in contrast to older units that people were using.
- It eliminated the need to heat gallons of water as with the tanked units.
- It uses a relatively smaller footprint and is capable of serving up to a three bedroom apartment, and water seems to get hotter much faster than before.
- A moderately sized family will get enough hot water. As reported by one buyer, there was no more fight about who used the hot water. In another instance, there was no more “leave some hot water for everyone else”.
- The unit comes with a remote control panel for ease of use, and it can even display fault codes. The water can also be set to the exact temperature that is needed.
Rheem RTGH-95DVLN 9.5 GPM Cons:
- There could be some rattling noise from the case. This could be due to a noisy fan which will later shut-off as soon as the water is hot enough.
- The heater might not able to meet very high hot water demands.
- It could take some more time before the heated water circulates to the house especially when the unit is at a considerable distance to the house.
- Look out for the “cold water sandwich,” a phenomenon where hot water runs from a tap, which is followed by a burst of cold water and then, another round of hot water.
- There are some reservations as the unit did not come with the flush valves which is useful for the yearly maintenance. This added to the cost of owning the unit.
2. Second Pick – Rheem RTG-64XLN 6.4 GPM Outdoor Tankless Natural Gas Water Heater
- Natural Gas Tankless Water Heater
- 6.4 gal/min. at 35-Degree Rise
- UMC-117 remote control and 10-Feet of thermostat wire is included
- Low Nox Version
Rheem RTG-64XLN Pros:
- Easy to set-up by anyone with some basic DIY knowledge. The unit also heats up very quickly, and there was little to no wastage of water.
- The product works excellently well for up to 2 bedroom apartment. In some other cases, it has been known to serve up to three bedroom apartments.
- Ability to set the heater to the desired temperature as you would not experience scenarios where the water becomes too hot, and then, you’d have to run some cold water to get the temperature you want.
- The unit comes with a remote controller which is very efficient from a distance.
- People liked the fact that the unit was tankless as there was no need to be filling up the heater with water as they did with their older unit.
- Relatively affordable to buy, and users could make savings on the amount of propane gas they used.
- The unit has the energy saving badge which meant that it was exempt from tax. Also, some users saved upwards of $300 yearly by using this unit against their previous heaters. Others estimated that their electricity bill went down by over $150 per month.
- You should expect to gain back your closet space after upgrading from a previous water heater; this was due to the fact the unit could be installed outdoors.
- It eliminated the need for a thermostatic shower valve as the heater maintained a constant temperature, especially during the intermittent shutting off and turning on of a tap while bathing.
- Ability to run multiple showers simultaneously with no drop in pressure. This ensured that people could run their bathroom and kitchen faucets, dishwashers and so on with no hassle.
Rheem RTG-64XLN Cons:
- There could be issues with the electronic boards of the water heater. However, don’t panic, get their service reps.
- There were some issues regarding the reliability of the product. Reports suggests that the product stopped working after some time and in some cases, they were able to get it running again.
- The unit did not come with the service/flush valve kit which is useful during maintenance.
3. Third Pick – Rheem RTE 13 4 GPM Electric Tankless Water Heater
- On-unit temperature control, LEDs indicate active element and standby mode
- Standard 1/2″ water connection
- Rugged brass/copper heat exchanger
- Modulating power. Specifications:Great for single shower applications, 240 Volts – 13KW, 4.0 GPM maximum flow rate
- Please refer the User Manual for installation instruction.
Rheem RTE 13 Pros:
- Ability to serve a two bedroom apartment provided that multiple faucets are not turned on all at the same time.
- The unit works seamlessly provided the water is not too hard.
- This is a highly efficient heater as someone claimed that the unit could pay for itself in just 17 months. Another user reported that up to $200 was saved in one month of usage. In a similar vein, a user reportedly saves $3 a day on the unit.
- The “ultra-compact” size of the unit saved lots of space especially for people who were previously using the tanked heater.
- Ability to self-install the unit especially for the DIY enthusiasts. Though, some basic knowledge of plumbing and electrical wiring is required to install the 13 KW unit.
- The heating is so efficient that some might have to lower the default temperature settings.
- The units were often bought to replace older leaky units, but people did not complain about leakages from these heaters.
- Expect no issues at all from this unit during usage, provided that the correct electrical wiring is used, and the current is good enough.
Rheem RTE 13 Cons:
- The company might not quickly handle issues regarding unit defects but this might be the fault of users though. In order cases, there could be problems with the reliability of the product.
- The unit is quite small and might not handle the hot water pumping requirements of larger households. The unit might take too long to heat up the water.
- From surveys, it could be inferred that there were some complaints regarding user experience. A user experienced glitches with the workings of the water flow switch. In another case, a user made some clarification about the flow rate of the unit; while it was written that the unit could pump 4 GPM, in reality, it was pumping water at a much lower rate.
Another also reported that the unit had to be tipped over before it cold drain out the water.