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Condensing Propane Tankless Water Heater - Indoor - 8.4 GPM


Quick Overview



The Rheem Prestige™ RTGH-84DVLP gas tankless water heater is suitable for homes with up to two bathrooms. Rheem RTGH series is a propane fueled, high efficiency, gas tankless water heater. It features an optimized design providing home owners with continuous hot water on demand. This ENERGY STAR® qualified gas tankless water heater provides energy savings to home owners by eliminating the need to keep water hot around the clock, compared to standard storage tank hot water heaters.

Rheem Prestige™ gas tankless water heaters are a great choice for consumers that care about the indoor air quality of their homes. Rheem gas tankless water heaters are direct vented. They use air from outside the home to burn the propane gas. Then it routes the exhaust back to the outside, assuring that indoor air is not contaminated by any pollutants.

Rheem condensing gas tankless water heater technology permits the use of PVC pipes for the air-intake and exhaust. The use of PVC pipes saves money, time and materials during the installation process compared to stainless steel vent pipes used in low efficiency units.


  • 94% energy efficient with stainless steel condensing heat exchanger.
  • Intelligent electronic controls designed to increase energy efficiency and safety.
  • Third party efficiency listed by AHRI.
  • 0.26 GPM minimum flow rate, 0.40 GPM minimum activation flow rate.
  • RTGH-84 for 2-3 bathroom homes– 8.4 gal./min. at 35°F rise max., 6.6 gal./min. at 45°F rise SCAQMD rule 1146.2 compliant.
  • Simple, efficient design – approximately the size of a medicine cabinet.
  • Self-diagnostic system makes installation and service easy.
  • Digital screen displays temperature setting and maintenance codes.
  • Two-pipe direct vent system designed for PVC pipe.
  • Built-in electric blower.
  • Exclusive Guardian overheat film wrap (OFW).
  • EZ-Link cable available for higher demand applications to connect two tankless units to operate as one.
  • Manifold up to six units with an optional MIC-6 manifold control board.
  • Manifold up to 20 units with the optional MIC-185 plus the MICS-180 manifold control assembly.
  • High-altitude capability – up to 9,840 ft. elevation above sea level.
  • Up to 38 ft. of 3" PVC pipe or 5 ft. of 2" PVC pipe.
  • Digital remote control and 10 ft. of thermostat wire included.
  • Supplied with a 120 volt power cord.
  • Freeze protection to -30°F.

Energy Savings

The ENERGY STAR® qualified Rheem RTGH-84DVLP is a good option for home owners with propane fueled homes. This gas tankless water heater has an Energy Factor of 0.94, so 94% of the energy used to operate the Rheem gas tankless water heater is actually used to heat water. This makes the Rheem Prestige™ gas tankless technology up to 30% more efficient. So, home owners may use up to 30% less propane gas with this Rheem model, compared to standard gas water heaters.

Rheem Prestige™ tankless water heaters activate at flow rates of 0.4 gallons per minute and can provide hot water at flow rates of as little as 0.26 gallons per minute. The low activation rates allow home owners to get hot water when they need it. The low activation rate also permits the installation of energy and water saving faucets and showerheads in the home without compromise.


Energy Type: Propane Gas
Product Type: Indoor Direct Vent, Condensing
Min. Flow/Activation GPM: 0.26/0.40
Gas Input BTU/H: 11,000 – 157,000
Tank Height: 27.5”
Tank Width: 18.5”
Tank Depth: 9.75”
Ship Weight: 82 lbs
Energy Factor: 0.94


The heat exchanger is warrantied for 12 years for residential or 5 years for commercial. There is a 5-year warranty on parts and a 1-year warranty on labor.

Additional Information

Manufacturer Rheem
BTU 157,000
Installation Location Indoor
Flow Rate 8.4 GPM
Energy Source Propane
Certifications ENERGY STAR