RW is a trusted Memphis plumbing company you can count on!

Picture of a plumber. This represents rw plumbing services offered for residential and commercial clientele

Why Do Our Customers Count On RW To Provide Quality plumbing Services?

  • All of our technicians are drug tested and background checked
  • We’ve provided over 100,000 residential plumbing services of all kinds
  • We are experienced in servicing all major brands
  • We are fully licensed, bonded, and insured
  • Our plumbing technicians go through extensive training
  • Our trucks are fully stocked to handle any plumbing situation
  • We arrive in full uniform with shoe covers so your floors stay protected
  • Trusted Memphis Plumbing Company For Over 20 Years

Plumbing Services we offer

  • Drain Cleaning
  • Backflow Prevention Device Testing & Repair
  • Clogged Drains
  • Frozen Pipes
  • Gas Line Replacement & Installation
  • HydroScrub – Jetting
  • Plumbing Repairs
  • Leaking Pipes
  • Diagnosis & Inspection
  • Replacement & Installations
  • System Maintenance
  • Plumbing Video Camera Inspection Preventative Maintenance Products & Services
  • Septic Pumping
  • Septic Tank Service
  • Sewer Line Repair & Replacements
  • Sewer System Backups
  • Sump Pumps
  • Tankless Water Heaters
  • Trenchless Sewer Line Repair
  • Water Heater Repair, Replacements & Installation
  • Water Line Replacement & Installations

our people make the difference.

Each member of our friendly customer service staff will make every effort to get your problem taken care of fast, even on nights and weekends.

Our skilled, licensed plumbing technicians will prove you with efficient, professional services. We take pride as a Memphis Plumbing Company offering the area’s best customer experience. Due to this, our customers have faithfully relied on RW Heating & Air Plumbing & Electrical for over 20 years. This is due to our knowledgeable technicians having decades of experience in the plumbing industry.

Whether you have a small leak or need immediate repair on a large scale, our team of plumbing professionals are always available to provide you with solutions that you can trust.



Tankless Hot Water Heaters vs Tank Storage Water Heaters

What Is a Tankless Water Heater?

Tankless water heaters, also known as on-demand water heaters, use high-powered burners to rapidly heat water as it runs through a heat exchanger and deliver it directly to your faucets or shower without storing it in a tank. Tankless water heaters are usually powered with electricity or gas. These types of water heaters were found to be 22 percent more energy efficient on average than the gas-fired storage-tank models in tests conducted by Consumer Reports.

How are “Traditional” Tank Storage Water Heaters Different?

Storage tank water heaters are commonly found in most homes. Their components are an insulated tank, typically holding 30-50 gallons of water, to heat and store the water until it’s needed. A pipe emerges from the top to deliver hot water to its destination, kitchen, bathroom, or other sinks.

Typically, there are storage-tank water heaters that use either natural gas or electricity for their fuel. Natural gas storage-tank water heaters use almost 50 percent less energy, costing less to operate, than the electric variety. However, they cost a bit more than electric models. They also feature a temperature and pressure-release valve that opens when either temperature or pressure exceeds preset levels.

Tankless Water Heater Energy Efficiency

Homeowners with on-demand (tankless) water heaters that use less than 41 gallons or less of hot water each day, enjoy between 24 and 34 percent more energy efficiency than storage tank water heaters. If you use lots of hot water daily (around 86 gallons), you might enjoy energy efficiency of an additional 8 to 14 percent.

Tankless Can cost a little bit more money

Purchasing a tankless water heater will cost you a bit more than a traditional storage tank water heater, but, tankless varieties las longer than conventional water heater models which translates to a 20+-year useful life, as compared to storage tank types which last only 10 to 15 years before self-destructing, possibly flooding your basement or home, depending on their location If you want to “hit a home run,” install a tankless water heater at each hot water outlet. Why? You may receive energy savings of 27 to 50 percent if you put on-demand water heaters at all hot water outlets in your home.

Pros & Cons of Tankless Water Heaters

Since there are no perfect products (tankless water heaters are no exceptions), there are good points and downsides to on-demand water heaters, too.

Tankless Water Heater Advantages:

  • Saves you money over time.
  • According to, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.” Tankless water heaters (if gas-fired) will save homeowners over $100 annually the longer they remain in service. Electric tankless water heaters still save homeowners around $44 per year according to the US Department of Energy.
  • Longer useful lives than storage tank water heaters.
  • Tankless water heaters typically last 20 to 30 years, double the forecasted useful life of a storage tank water heater. Be aware that “hard water” areas, may reduce the useful life of both types of water heaters.
  • Does not consume the space of a storage tank water heater.
  • On-demand water heaters are small and may be installed in “tight quarters.” They can even be installed on outside walls if your home is terminally space-challenged.
  • You’ll have hot water whenever you need it.
  • You won’t have to wait even 15 to 25 seconds for your water to become hot, as tankless water heaters deliver two to three gallons of hot water per minute. Many storage tank water heaters take longer to heat water, because of the larger volume of water they must heat, than most tankless types.

Drawbacks of Tankless Water Heaters:

  • Higher purchase cost than storage tank water heaters.
  • Instead of $500 to $800 for a good storage tank water heater, you’ll spend over $2,000 to around $4,500 to buy and install a tankless water heater.
  • Tankless water heater installation can be costly if you’re replacing a storage tank water heater with a tankless-type water heater
  • When you choose to retrofit a tankless water heater in place of a storage tank variety, your plumber-installer will take more time, increasing the installed cost, of replacing a storage tank water heater because of the complexity of relocating existing piping.
  • They can be “output challenged.”
  • Simultaneously taking showers and doing laundry can cause your tankless water heater to fail to keep up with the hot water demand on it. If you have multiple showers in use in your home, you often will have one of the shower-takers endure a “chilly” experience.

Pros & Cons of Storage Tank Water Heaters 
(Tank) Water Heater Advantages:

  • Storage tank water heaters have lower initial cost by a significant margin.
  • Instead of spending over $2,000 to $4,500 to buy and install a tankless water heater, it will only cost you around $500 to $800 to purchase and professionally install a good storage tank water heater.
  • Storage tank water heaters operate simpler than tankless varieties, resulting in less costly maintenance and repairs.
  • Their simplicity makes for easy, low-cost repairs when these water heaters are not functioning properly. Tankless water heaters are more complex and expensive to repair and, obviously, replace.

Drawbacks of Storage (Tank) Water Heaters:

  • Somewhat higher utility bills.
  • Since storage tank water heaters heat, then reheat water to pre-set temperature, irrespective of what your hot water needs happen to be, they increase your utility bills. If these water heaters function in a cool environment (location), they’ll work harder in the winter months, driving your gas or electric bills even higher during the cold winter.
  • Occupy more space because of their size than on-demand water heaters.
  • if your home is space-restricted, you’ll have challenges finding enough area to locate storage tank water heaters. Also, they cannot be located outside your home like tankless water heaters.
  • You don’t want to be the last family member to take a shower.
  • If you have a typical home water heater, you might want to get a larger one if you often have multiple showers taken. While this option may relieve the hot water shortage, but your energy bills will increase along with your hot water availability. Average storage tank water heaters can only support three showers in a row. You won’t like being the fourth shower-taker unless you prefer chilly, not hot, showers
  • Need to be replaced more often than tankless water heaters.
  • Since storage tank types have a shorter useful life (about ½ the life of on-demand water heaters), typically 10 to 15 years, you may need to buy and install them almost twice as often as tankless water heaters, reducing your purchase savings.


If your bank account can manage the higher initial cost of a tankless water heater, you’ll save money over time by choosing tankless. But, if you are on a fixed modest income, a storage tank water heater might make more sense for you. Discuss the two types of water heaters with your plumber to weigh your options.

Now that you know the “good, bad, and the ugly” of both primary water heater options, you might want to call a top firm, like RW Heating & Air Plumbing & Electrical (662-291-7763), to help you decide on the type, size, and brands of water heater you should consider.