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In Latin, “Maximus” means “the greatest,” and the Rheem® Maximus® Super High Efficiency Gas Water Heater lives up to its name. It’s powerful enough to deliver dependable hot water, with unmatched efficiency in a residential gas water heater. So when you’re looking for a new water heater, choose the greatest.
Save upfront and continue saving for years to come with the Rheem® Maximus® Super High Efficiency Gas Water Heater with LeakSense™. From big energy cost savings to installation savings and tax credits, everything about the Maximus is a win-win.
Super High Efficiency – High efficiency water heating with up to 0.90 UEF for carbon footprint and energy use reduction of up to 36%1
Cost-Friendly Upgrade – Take advantage of available tax credits or local utility rebates, and enjoy estimated energy cost savings of up to $1,100+ over 12 years5
Delivers Continuous Hot Water – Heats water up to 2X faster than a standard gas tank2 so you’ll have plenty of water to do the dishes, wash the laundry or even run continuous3 back-to-back showers
MaxMode™ – Gives the water heater the boost it needs to produce up to 15% more hot water and keep up, even if demand gets high—perfect for those weekends with house guests
Integrated Wi-Fi – Real-time service alerts and control from anywhere with the EcoNet App4
Added Protection – Built-in 360° LeakSense™ water leak detection system detects any leak, large or small, internal or external6; plus Maximus is FVIR compliant
Hot Water Availability Indicator – Shower with confidence knowing there is enough hot water available
Leak Prevention – Available LeakGuard™ accessory stops water leaks before they become a problem, limiting leaks to 20 oz. or less7
0 Clearance on Sides – Fits in a closet
Venting Versatility – Installs as Power Vent or Power Direct Vent, so you only have to carry one product on your truck
Startup Verification – Be sure your customer is up and running before you leave the home
Easy Diagnostics – View advanced diagnostic information8 and detect outgoing water temperature
Fast and Easy Service – Fully serviceable from the front
If you have a large household with extra-high demand for hot water, the extra-large capacity of the Maximus® Heavy Duty with LeakSense™ is an easy choice. It combines power and smart performance so you can enjoy energy cost savings plus installation savings and tax credits.
Super High Efficiency – High-efficiency water heating with up to 0.88 UEF, reducing your carbon footprint with up to a 33% energy-use reduction1
Cost-Friendly Upgrade – Take advantage of available tax credits or local utility rebates, and enjoy estimated energy cost savings of up to $1,100+ over 12 years5
Delivers Continuous Hot Water – Heats water up to 2X faster than a standard gas tank2 with a 3.8 GPM continuous flow so you’ll have plenty water to do the dishes, wash the laundry or even run continuous3 back-to-back showers
Heavy Duty Capacity – Heats 75 gallons with 100K BTU/h power to keep the whole house supplied with ample hot water
MaxMode™ – Gives the water heater the boost it needs to produce up to 15% more hot water and keep up, even if demand gets high—perfect for those weekends with house guests
Integrated Wi-Fi – Real-time service alerts and control from anywhere with the EcoNet App4
Added Protection – Built-in 360° LeakSense™ water leak detection system detects any leak, large or small, internal or external6
Hot Water Availability Indicator – Shower with confidence knowing there is enough hot water available
Leak Prevention – Available LeakGuard™ accessory stops water leaks before they become a problem, limiting leaks to 20 oz. or less6
Perfect for Replacement – Same size as a standard gas water heater with 1/2 gas line, standard 3/4 water connection and top & side connections
Venting Versatility – Installs as Power Vent or Power Direct Vent, so you only have to carry one product on your truck
Startup Verification – Be sure your customer is up and running before you leave the home
Advanced Diagnostics – View full-text diagnostic information7 and detect outgoing water temperature
Fast and Easy Service – Fully serviceable from the front
Maximus® takes sustainability to the max with efficient performance and innovative features that mean you don’t have to choose between your sustainability goals and enjoying hot water.
Super High Efficiency – High efficiency water heating with up to 0.90 UEF to lower your monthly energy bill
Cost-Friendly Upgrade – Take advantage of available tax credits or local utility rebates, and enjoy estimated energy cost savings of up to $630 over 8 years5
Advanced Performance – A 50-gallon Maximus provides up to 25% more hot water than a standard tank so you’ll have enough hot water to take care of all your hot water needs, including doing the dishes, washing the laundry, showering and more
Ultra Low NOx Radiant Burner Design – Reduces NOx emissions up to 75%9
Carbon Footprint Reduction – Reduces your carbon footprint with up to a 36% reduction in energy use
0 Clearance on Sides – Allows installation in tight spaces—even closets
Venting Versatility – Installs as Power Vent or Power Direct Vent, so you only have to carry one product on your truck
Startup Verification – Be sure your customer is up and running before you leave the home
Easy Diagnostics – View on-screen diagnostic codes7 and detect outgoing water temperature
Fast and Easy Service – Fully serviceable from the front
Making the switch to Maximus is simple. All Maximus Super High Efficiency Gas Water Heaters have zero side clearance requirement—making them easy to install even where space is a concern, like in a closet.
With integrated Wi-Fi, homeowners can avoid cold showers, detect leaks and more. It’s all possible with Maximus Super High Efficiency Gas Water Heaters and the EcoNet® App.4
NOTE: Appearance of EcoNet screens may vary.
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