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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 for carbon footprint and energy use reduction of up to 36% 1Cost-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 years 5
Delivers Continuous Hot Water – Heats water up to 2X faster than a standard gas tank 2 so you’ll have plenty of water to do the dishes, wash the laundry or even run continuous 3 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 App 4Added Protection – Built-in 360 ° LeakSense ™ water leak detection system detects any leak, large or small, internal or external 6 ; 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 less 7
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 information 8 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 reduction 1Cost-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 years 5
Delivers Continuous Hot Water – Heats water up to 2X faster than a standard gas tank 2 with a 3.8 GPM continuous flow so you’ll have plenty water to do the dishes, wash the laundry or even run continuous 3 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 App 4Added Protection – Built-in 360 ° LeakSense ™ water leak detection system detects any leak, large or small, internal or external 6Hot 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 less 6
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 information 7 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 years 5
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% 9Carbon 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 codes 7 and detect outgoing water temperature Fast and Easy Service – Fully serviceable from the front
Built-in 360° LeakSense™ water leak detection system
$1,200
Save Money
Maximus models qualify for tax credits and rebates up to $1,200
2X
Performance
Maximus heats water up to 2X faster compared to conventional vent gas tanks.
VIDEO
Rheem Maximus Super High Efficiency Gas Water Heater.
Designed by plumbers and engineered by Rheem, it simplifies installation and offers a high-performance solution for homeowners, while delivering more hot water and super high efficiency while being easy to service.
Knowledge is Power
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
EcoNet Home Screen
Check and adjust temperature, view any alerts, change operating mode and view available hot water
Knowledge is Power
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
Energy Usage Tracking
View weekly, monthly and yearly energy usage reports
Knowledge is Power
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
Advanced Diagnostics
Allows plumbers to view detailed alerts and alarm codes while at the water heater to expedite service8
Knowledge is Power
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
Water Temperature Control
Easily check and adjust water temperature and activate MaxMode
Knowledge is Power
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
Setting Away and Home
Save energy on water heating costs while away and return home to a tank full of perfectly hot water
Knowledge is Power
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
Contractor Information
Helps you connect with customers by giving them an easy way to reach and share codes with you for repeat business and quicker service calls
Upgrading Is Easy
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.
Personalized Service
Our service is tailored for each individual and their requirements
Get Financing
A tight budget should never keep you from comfort. Get the equipment you need with Residential KwikComfort® Financing.
Tax Credits & Rebates
Learn about available tax credits and rebates to reduce your costs
Ready to get the continuous hot water you need with the efficiency and smart features you deserve?
Get Your Rheem Maximus Super High Efficiency Gas Water Heater Today
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