Gas Tankless Hot Water Heater
Commercial and Residential

Request a Price Quote on Gas Tankless Hot Water Heaters

Authorized Dealer and Installer of Rinnai Gas Tankless Hot Water Heaters

Indoor Unit
Indoor Gas Tankless Hot Water Heater
Outdoor Unit
outdoor gas tankless water heater
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.

Heat Water Only When You Need It!
Tankless water heating is the wave of the future – available to you today. You’ll enjoy up to 40% energy savings, endless hot water, and significant space savings – plus a typical life span of 20 years or more in residential applications. And this “green” technology produces less CO2 and NOX than conventional gas or electric tank water heaters.

You see, Rinnai tankless water heaters use natural gas or propane gas to heat water only when needed. When water flow is detected, the Rinnai begins heating water as it passes through its copper heat exchanger. The design of the unit allows it to capture up to 84% of the heat energy, making it highly efficient and cost effective. When the demand for water ceases, the tankless unit shuts down and uses no energy – a revolutionary advantage over inefficient tank-style heaters. More efficient when it’s on, and off when it’s off, the Rinnai tankless water heater is the ultimate choice in today’s world of high energy costs and environmental preservation.

Enjoy Endless Hot Water
Tankless water heating is one of the few energy-saving technologies that actually improves the quality of your life. You’ll delight in endless hot water – for bathing, cooking, dishes, laundry, and all the other countless ways hot water enriches your life. Plus, our digital controllers give you precise control of the output water temperature for the ultimate in comfort and safety.

Save Space
Traditional tank water heaters can take up to 16 square feet of valuable floor space. But your Rinnai unit – only about the size of a carry-on suitcase – can be installed on virtually any wall inside or outside of your home or building. The compact design affords you almost limitless installation options, so you can strategically locate the
unit for maximum performance and energy efficiency

Gas Tankless water Heater Model Sizing ChartGas Tankless water heater vs other tankless heaters

Gas tankless water heater vs Traditional Tank

Gas Tankless water heater annual savings

Contemporary Design
Experience a never-ending supply of fresh hot water – and a sleek, sculpted water heater design that reflects the innovative technology within. Introducing the Rinnai LS Series, a whole new line of tankless water heaters that afford you the very best of both form and function. With their attractive silver finish, Rinnai LS Series units are available in interior and exterior models, giving you virtually unlimited flexibility to install your unit wherever you choose.

Perfect for Any Home
The remarkable combination of design and performance makes the LS Series the perfect choice. Whether you’re building a spacious new home – complete with luxurious spa bath and body spray system – or remodeling your older home, Rinnai LS units can be used individually, in pairs, or in banks of three or more to supply all your hot water needs.
LS Series interior-mount units can be placed in any room – no need to hide them in closets or utility rooms – and vent directly to the outside. Exterior units require no additional venting and can even be installed in a recessed enclosure, then painted or textured to match the exterior of your home for a clean, inconspicuous appearance.

Improved Performance and Longevity
Whichever LS unit you choose, you get the benefit of a newly designed, commercial-grade heat exchanger for optimum durability. In fact, the same LS unit can be used for both residential and commercial applications. Homeowners get the reliability of commercial-grade construction and an industry-leading, 12-year limited warranty, and commercial customers get lower cost and wider availability of units.
Rinnai L Series
Rinnai L Series Features

Commercial Quality at Your Fingertips
Both commercial and residential customers benefit from the innovative new heat exchanger design of the LS Series. To achieve this level of performance, Rinnai engineers used finite element analysis simulation to maximize thermal transfer and minimize thermal stresses. Rigorous high-temperature reliability testing confirmed the design.
And now Rinnai delivers to you the most reliable, durable tankless water heater in our history.
This dual-use heat exchanger provides commercial customers a benefit unique to Rinnai: the ability to access a commercial-grade water heater at any of our over 2,000 distribution outlets. So, when emergencies occur and
replacement units are needed immediately, you’ll no longer need to wait for a commercial unit.

Additional Commercial Features and Benefits:
    •    Variety of digital controllers allows precise control and monitoring.
    •    Available wireless controller (MC-502RC-1M/S) provides control from a central location, even on retrofits.
    •    Multi-unit options: the EZConnect™* cable (for 2 units) or MSA control boards (for 3 or more units**)              allow units to be used in combination and in rotation, to avoid wearing out the first unit in a manifolded                series.
    •    Exterior units can be mounted on outside walls or on rooftops with no additional protection or venting.
    •    Rinnai’s concentric venting system means zero clearance, sealed combustion, and single wall or roof                     penetration for maximum safety and installation simplicity.

Tankless hot water accessoriesAccessories
Rinnai's line of digital controllers allows you to set water temperature precisely for multiple locations in your home, analyze and troubleshoot the water heater, and even automatically fill your bath to a pre-set temperature and volume. An available wireless controller is perfect for retrofits where pulling a wire through the wall is impractical. (Note: the MC-91 controller comes standard with all LS units.)

Flexible Installation
Choosing a mounting location depends on your taste, your home or building, and your location. Install your Rinnai tankless water heater inside, outside, in a garage or laundry room or virtually anywhere else.

For interior installation, Rinnai units use a concentric venting system – a single vent assembly featuring an inner, metal vent for exhaust gases and an outer PVC or metal tube for bringing combustion air from outdoors. The result: a direct-vent, sealed-combustion system that offers optimum safety, performance and ease of installation.

Exterior units can be installed in a recessed enclosure, flush with the outer wall, then painted or textured to match your home's panel or brick siding.

And if you need more than one unit for your larger home, spa or body spray shower, Rinnai’s EZConnect™ feature allows you to link two units with a simple cord. For even larger applications, your installer can place multiple units in parallel.
Tankless water heater mounting

Interior Indoor Gas Tankless Water Heater

exterior outdoor gas tankless water heater

 Request a Price Quote on Gas Tankless Hot Water Heaters

THINK GREEN.  We use recycled concrete in lieu of gravel as aggregate in our concrete.  It doesn't cost us any extra; thus, it doesn't cost you any extra.  As far as structure, the recycled concrete is just as strong as the gravel.  We do what we can to save the limited resources we have on earth.



Monster Constructors installs gas tankless instant hot water heaters all over the DFW metroplex, including Dallas, Fort Worth, Arlington, Plano, Irving, Carrollton, Richardson, Denton, Garland, Grand Prairie, Addison, Allen, Azle, Bedford, Benbrook, Burleson, Cleburne, Colleyville, Cedar Hill, Coppell, Corinth, DeSoto, Duncanville, Ennis, Euless, Farmers Branch, Flower Mound, Frisco, Haltom City, Highland Village, Hurst, Keller, Lewisville, Mansfield, Midlothian, North Richland Hills, Southlake, The Colony, University Park, Watauga, Weatherford, White Settlement, and surrounding towns and cities.  Curious if you are within our scope?  Contact us: Click Here.


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