Houston Water Heater Specialists

Hot water plays an important part in our everyday lives. From taking a bath, washing dishes, to doing your laundry people depend on their hot water heater daily. When your tank heater needs to be replaced or instead you are looking to save money and preserve the environment Mammoth provides the most up-to-date in tankless technologies.

We are Houston’s top factory certified experts who will assist you to make the best decision possible for all your families hot water needs. Best of all, we’ll save you money too!!! Call us now to find out why we are the best Houston water heater service company!

Rinnai Tankless Water Heaters: Endless Hot Water

Houston Water HeaterRinnai Corporation’s patented tankless water heating technology delivers hot water at up to 9.4 gallons per minute for as long as you need it. You can run a dishwasher, washing machine and take a shower without running out of hot water at any one source. This means no more cold showers! (View Impressive Tankless Product Animation!)

Rinnai is more efficient than standard storage-type water tanks because it only spends energy to heat the water you need, when you need it rather than constantly spending money and energy to needlessly heat and reheat gallons of water, as is done with storage-tank water heaters. A Rinnai tankless water heater can deliver savings of up to 50 percent on water heating costs when compared to traditional water tanks.

There are several models to choose from for any residential or commercial application, ranging from indoor to outdoor models, to natural gas or propane fired.


A Rinnai tankless water heater is about the size of carry-on luggage and can be mounted inside or outside, freeing up valuable space in the home or business. Rinnai saves up to 16 square feet of floor space compared to storage tank water heaters which are bulky and unsightly.


All Rinnai interior units utilize an exclusive cool-to-the-touch vent system that is sealed combustion and requires only one penetration through the roof or sidewall. Rinnai interior units can mount almost anywhere and can have a vent up to 41 feet long. They are designed to operate at outdoor temperatures as low as -30° F.


Exterior Rinnai units offer tremendous flexibility and safety. They are mounted on the exterior of your home so they require no floor space. While they are designed to operate to -30°F, care should be taken to properly install them in colder climates.


Additional controls are a great option for Rinnai Tankless water heater owners. Controls are the window to Rinnai’s tankless water heaters. They allow the user to view and interact with the water heater’s operation, and provide technical and service details for trouble free operation year after year.

Houston Tankless Water HeaterWhy are Rinnai tankless water heaters so efficient?

Rinnai has decades of experience in designing and building tankless water heaters throughout the world. Rinnai’s precisely designed components are microprocessor controlled to maximize efficiency. They do not store hot water, waste energy by using a conventional chimney, and have electronic ignition so there is no wasteful pilot flame.

Rinnai’s tankless water heater, is a natural or propane gas-fired unit that replaces the antiquated technology of hot water storage tanks. Another reason why to call today for the best Houston water heater service. Contact Mammoth Plumbing Today!!!

Electric & Gas Tank Water Heater Replacement

When it’s time for a new electric or gas water heater, calling a professional will be the smartest thing you could ever do. We know how well water heaters can work and how safe they can be when properly installed. We also know the downfall and dangers of bad installations. That’s why we believe water heaters should only be installed by licensed and well trained professionals.

Water Heater HoustonAs of July 1, 2003 all conventional 30, 40 and 50 gallon residential gas-fired water heaters must comply with new, stringent standards regarding Flammable Vapor Ignition Resistance. Mammoth Plumbing utilizes the Defender Safety System, a cutting edge technology that fully complies with the new standard. You can count on Mammoth Plumbing to meet these requirements now and in the future.

Defender Safety System is only available to professional installers people whose knowledge, skill and experience ensure that the right model water heater is installed correctly. The peace of mind you realize by having Mammoth install your water heater is a priceless commodity you can get at a reasonable price.


Knowledge of Electricity and Its Uses: Installation of electric water heaters requires knowledge of the properly rated wiring material as well as knowledge of the home’s electrical capacity. An adequate electrical service is a requirement.


Getting the Right Gas Water Heater For Your Home: Gas valves are designed to handle a specific type of fuel. Some gas-fired water heaters are designed for certain types of homes. Making the wrong choice can be a serious hazard.

Thermal Expansion

Mammoth Understands Thermal Expansion: Do you have an open or closed water system? Closed systems are subject to thermal expansion and pressure build-up. Open systems can become closed when check valves, water softeners or water meters are added. A professional will add an expansion tank to avoid problems.

Pressure Build-Up

Pressure Build-Up is a Serious Matter: Even if your water heater tank doesn’t rupture from thermal expansion, pressure inside the tank can cause a constriction of the flue tube. This, in turn, can cause a back up of combustion gases and carbon monoxide inside the home.

Specialty Heaters

Many Special Water Heaters Aren’t Sold To Customers: Certain Defender Safety System water heaters cannot be purchased by the public. There are literally thousands of models with important variations and safety features that you’ll never know about unless you call a professional such as ourselves.


Laws Governing Installations: In many parts of the country, state agencies and local municipalities have laws and codes governing the installation of water heaters. These laws state that a water heater must be installed by a licensed professional. Contact Mammoth Plumbing today to learn about all our plumbing services!

Safety Reminder: Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near any gas fired appliance. Gasoline and other flammables can be dangerous if not used safely. Also, water temperature over 125°F can cause severe burns instantly from scalds. Always feel water before bathing or showering.

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Houston Water Heater Professional
Hot water plays an important part in our everyday lives. When a water heater needs to be replaced, Mammoth is the Houston Water Heater Professional. Call Now.

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