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Residential Products
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HomeProductsResidentialWater HeatersProfessional Classic Series Ultra Low NOx Skinny Models

Professional Classic Series Ultra Low NOx Skinny Models

MODEL PROG40-34U RH EC1
  • 6-Year limited tank and parts warranty
  • With ProtectionPlus the 6-year limited tank warranty becomes 10-year 
  • See Residential Warranty Certificate for complete information
  • .58 - .64 UEF
  • Longer life
  • SCAQMD Rule 1121 compliant
  • 29, 39, 40, and 50 gallon capacities
Select Capacity
28
Gallons
38
Gallons
46
Gallons

SKU PROG40-34U RH EC1
Warranty Years 6
Model Professional Classic Series Ultra Low NOx Skinny Models
Tank Capacity 38
Fuel Natural Gas
Height 61.5"
UEF
0.58
LowNox Yes

Efficiency 

  • .58 - .64 UEF 
  • More hot water at a low operating cost

Performance 

  • FHR: 51 - 86 gallons for natural gas 
  • Recovery: 30 to 40 GPH at a 90° F rise, depending on mode

Guardian System & Sensor 

  • Exclusive fuel shut-off device 
  • Maintenance free – no filter to clean 
  • Protective control system that disables the heater in the presence of flammable vapor accumulation

Low Emissions 

  • Ultra Low NOx radiant burner design 
  • Stainless steel construction 
  • SCAQMD Rule 1121 compliant 
  • Meets 10 ng/J NOx requirements

Self-Cleaning 

  • EverKleen® patented system fights sediment build-up 
  • Reduces fuel costs 
  • Provides more hot water

Easy to Light 

  • No matches required 

Longer Life 

  • Premium grade anode rod provides long-lasting tank protection

High Altitude Compliant 

  • Select models certified up to 10,000 ft. above sea level 

Plus… 

  • NEW! Skinny models with smaller tank diameter 16 & 18" diameter 
  • NEW! Side water connections for space heating applications available on select models 
  • Enhanced flow brass drain valve 
  • Temperature and pressure relief valve included 
  • Factory installed temperature and pressure relief valve on select models 
  • Low lead compliant 
  • Exclusive Rheemglas® lining

Warranty 

  • 6-Year limited tank and parts warranty
  • With ProtectionPlus the 6-year limited tank warranty becomes 10-year 
  • See Residential Warranty Certificate for complete information

  • 6-Year limited tank and parts warranty
  • With ProtectionPlus the 6-year limited tank warranty becomes 10-year 
  • See Residential Warranty Certificate for complete information

More Residential Rheem Products

Find additional documentation by viewing these related products.

Natural Gas
Propane Gas
Professional Prestige® Maximus Heavy Duty with LeakSense
Capacity 75-75
  • .88 UEF reduces operating cost
  • Highest Hot Water Delivery (FHR) of 198 gallons in MaxMode
  • Easy front access to connections and components
  • LCD Display with built-in water leak sensor and system health
Propane Gas
Natural Gas
Professional Classic Plus® Maximus
Capacity 40-50
  • Up to .90 UEF reduces operating cost
  • Recovery: Up to 64 GPH at a 90° F rise, depending on model
  • Up to 95G first hour rating depending on model
  • Built-in Condensate Neutralizer
Propane Gas
Natural Gas
Performance Platinum Maximus With LeakSense
Capacity 40-50
  • Up to .90 UEF reduces operating cost
  • Highest Hot Water Delivery (FHR) of 192 gallons in MaxMode
  • Easy front access to connections and components
  • LCD Display with built-in water leak sensor and system health
Propane Gas
Natural Gas
Performance Plus® Maximus
Capacity 40-50
  • Up to .90 UEF reduces operating cost
  • Recovery: Up to 64 GPH at a 90° Frise, depending on model
  • Up to 95G first hour rating depending on model
  • Built-in Condensate Neutralizer