Heating Systems from Rheem

Rheem has been a pioneer in heating, cooling, and water heating innovation for nearly a century. Home Mechanics is proud to offer Rheem products as the company continues to lead with its bold approach to product and process improvements to dramatically reduce the impact on the environment while empowering both customers and employees to work and live sustainably. It's all part of their extremely ambitious future vision and equally bold commitment.

Rheem's High Efficiency Tankless Water Heaters for your Home

Enjoy the convenience and comfort of continuous hot water. Rheem® high-efficiency condensing tankless gas water heaters are available in both indoor and outdoor models and are packed with features to help you save money and reduce water waste. These ultra-low NOx tankless solutions are also up to 96 per cent efficient, lowering energy costs.




Maximize your savings, convenience and hot water with new Rheem® Tankless Water Heaters—and get estimated savings of up to $1,1001 (NG Condensing models only)

Maximize Hot Water

Load the laundry, start the dishes and still have enough hot water to enjoy a relaxing hot bath

Enjoy Instant Hot Water

Choose a Tankless Water Heater With Built In Recirculation Pump or add a recirculation pump kit for instant hot water at the faucet

Minimize Cold Water Bursts

It pumps water through the heat exchanger in an internal loop so it’s ready for back-to-back hot water needs

Save Energy

Tankless water heaters only produce hot water when you need it, so they save energy and money all the time

Rheem High Efficiency Tankless Water Heater Options

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Tankless Water Heater Features

Why choose a Rheem Tankless solution? Rheem Tankless Water Heaters offer the savings, comfort and protection you need.


Save Money

Rheem High Efficiency Tankless Gas Water Heaters save up to $1,100 over 12 years1, and some qualify for rebates

Save Space

Compact sizes and outdoor models increase valuable usable space in your home

Save on Installation

1/2″ gas line compatibility (all models), low-cost PVC venting (High Efficiency models) and built-in condensate neutralizer3 (select High Efficiency models only) save installation time and money4

Save Water

Save up to 12,000 gallons2 of water per year with a Rheem Tankless Water Heater with Built In Recirculation Pump


Stay Safe

Exclusive Overheat Film Wrap shuts down the unit if the heat exchanger overheats for added safety in your home5

Protect Your Home

Available EcoNet® WiFi Kits send mobile maintenance reminders and detect and alert you to water leaks after shutting off water and gas to the unit (indoor models only5).

High-Efficiency Rheem Combination Boilers for Your Home

If you want to save space in your home while still enjoying the convenience of continuous hot water, consider a Rheem Combination Boiler. Rheem combi boilers combine endless hot water and space heating into a single unit, allowing you to replace your existing boiler and tank water heater with a single unit: the Rheem combination boiler.

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Preferred by Plumbers

More plumbers sell Rheem Tankless Water Heaters than any other tankless brand6


Rheem Tankless Water Heaters offer many exclusive, industry-first and industry-best features

One Rheem

Rheem is the only manufacturer offering heating, cooling and water heating equipment, and EcoNet® helps you manage them together — with smart-home systems compatibility

A Legacy of Expertise

Rheem has been a leader in water heating for nearly 100 years

Combi Product

TWO heating solutions


The new Rheem® Prestige® Series High Efficiency Combination Boilers offer both space heating and domestic hot water in a single unit. So whether you need the living room to be extra cozy for movie night or you’re ready for a hot relaxing bath, the Combi has you covered.

High Efficiency

A 95% AFUE rating means energy savings and potential rebates

Two In One

Enjoy both space heating and domestic hot water from one durable unit, from a brand you trust

Saves Energy

It only produces domestic hot water when you need it, so you save energy and money

Saves Space

A single combi boiler frees up valuable space by replacing your boiler and tank water heater

Rheem Combi Boiler Features & Benefits

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95% AFUE

Delivers 95 BTUs of heat for every 100 BTUs of gas input, qualifying some customers for local and/or utility rebates

Lower Installation Costs

Installs with 2″ and 3″ Schedule 40 PVC venting, which is easier to work with and lower cost than stainless steel, saving you money and time


Max Vent Lengths of 100' for 3", 50' for 2"

Means more flexible and versatile installation options2

Vent With Room Air

Saves money and time on installation3

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Plate Heat Exchanger

Transfers heat generated in the space heating process to the domestic water flow for continuous hot water

Separate Loops

Keep water for space heating and domestic hot water in two separate loops

Outdoor Reset Sensor

Tracks outdoor temperatures and overrides the heating set point as needed to keep the home comfortable when weather changes

Built-In Three-Speed Pump

Offers convenience and performance


Kicks in to provide extra heat if the thermostat set point has not been achieved in a reasonable time1

Built-In Auto Feeder

Maintains hydronic loop pressure automatically between 12–30 psi

Enjoy Space Heating and Water Heating in One

Bring home the comfort and savings of the Rheem high efficiency water heater & combi boiler.


News & Advice

June 8, 2024

As temperatures rise during hot summer months in Boston, homeowners often think about how to keep their homes cool while managing their energy costs. There are all kinds of things to consider, and options for every budget. Here are our favorite ways to make home more comfortable in the hottest part of the year.Inexpensive solutions

Summer Energy Savings: Beat the Heat in Boston

May 24, 2024

At the end of the day, any heating or cooling system needs to make your home base more comfortable. You want every room, for every person, at any time of day to be the right temperature. In an area like New England which has increasingly hot summers and cold winters, your HVAC system is mission

Ducted vs Ductless HVAC: Which Is Better in Boston?

May 11, 2024

The hottest thing in HVAC, especially here in Massachusetts, is heat pumps. You are forgiven if you don’t really know what a heat pump is and you’re even more confused about why the words ductless and mini-split sometimes come up in the same breath.HVAC is indeed a little confusing, so it’s not unusual for people

A Bostonian’s Guide to Heat Pumps and Ductless Mini-Splits
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For heating, cooling, plumbing, and electrical needs, contact Home Mechanics or send us an email at info@homemechanics.com. We are always prepared to offer you the best HVAC solutions.

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