Water Heater Installation, Repair, and Replacement

Tank water heater installation, repair, and replacement, with gas tankless installation and maintenance.

tennco. plumber adjusting settings on new tankless water heater

Tank Water Heater Installation, Repair, and Replacement

Water heaters fail without much warning and replacements require decisions most homeowners have not thought through in advance. At TennCo. Plumbing, we install, repair, and replace gas and electric tank water heaters and install Navien and Rinnai tankless systems throughout West Tennessee. We assess your home, your hot water demands, and your existing infrastructure and recommend the right solution for your situation.

Storage tank water heaters remain a highly reliable and cost-effective hot water solution for many West Tennessee households. TennCo. Plumbing sources gas and electric tank water heaters exclusively from professional plumbing distributors rather than box store inventory, ensuring the units we install are built to commercial specifications with stronger components and better factory warranties than retail models.

Tank Water Heater Repair

 

 When a tank water heater stops producing hot water or produces inconsistent temperatures, the cause is often a failed thermostat or heating element rather than a unit that needs full replacement. TennCo. Plumbing diagnoses the issue and performs thermostat and heating element repairs on gas and electric tank water heaters when the unit has useful life remaining.

Selecting the right tank size for your household prevents the two most common water heater complaints: running out of hot water and paying to heat water you are not using. We assess your household size, usage patterns, and existing infrastructure to recommend the correct capacity before anything is ordered or installed.

Thermal Expansion Tank Installation

If your home operates on a closed plumbing system with a backflow preventer or pressure reducing valve, a thermal expansion tank manages the pressure increase that occurs as water heats in the tank. Without one, that pressure has nowhere to go and accelerates wear on the water heater and connected plumbing. TennCo. Plumbing installs expansion tanks on all applicable installations.

 

water heater install in holladay tn including a thermal expansion tank

Switching From Tank to Tankless

Converting from a tank water heater to a tankless system involves more than swapping one unit for another. The existing infrastructure frequently needs to be modified to support the demands of a tankless unit. TennCo. Plumbing assesses your current setup before recommending a conversion and handles the full scope of the transition including gas line upsizing, venting reconfiguration, and proper sizing for your household hot water demand. Electrical modifications, when required, are coordinated with a licensed electrician.

Not every home is a good candidate for tankless. Natural gas or propane availability, the configuration of the existing system, and the layout of the home all factor into whether a conversion makes sense. We give you an honest assessment before any work is recommended

 

Permits and Code Compliance

 

Water heater installation requires a permit in many West Tennessee municipalities. We pull permits where required, coordinate inspections, and ensure every installation meets current code requirements.

At TennCo. Plumbing, we also provide maintenance services for both tank and tankless water heaters, including system flushing, anode rod replacement, and routine upkeep to extend equipment life and keep it running efficiently.

Frequently Asked Questions About Water Heaters in West Tennessee

How do I know if my water heater needs to be repaired or replaced?

Age and the nature of the problem are the two main factors. A tank water heater that is less than six years old with a failed thermostat or heating element is usually worth repairing. A unit that is leaking from the tank, producing rusty water, or consistently underperforming and approaching the end of its service life is typically a replacement. If you want to check the signs yourself first, here is how to tell if your water heater is going out.

Tank size depends on household size and usage patterns. A properly sized unit delivers enough hot water without paying to heat a larger volume than you use. We size every installation based on your specific household before anything is ordered.

Homes on closed plumbing systems need an expansion tank installed with the water heater to manage thermal expansion during the heating cycle. We assess your system during the installation process and install an expansion tank where it is needed.

Natural gas or propane availability, the existing gas line capacity, venting configuration, and the layout of your home all factor into whether a tankless system is the right fit. We assess your current setup before making a recommendation.

Tank water heaters typically last 10 to 15 years with proper maintenance. Tankless units generally last 15 to 20 years when serviced annually. Regular flushing and filter cleaning are the primary maintenance tasks that extend tankless unit life.

For most tank water heaters, flushing once a year is a reasonable schedule, though the right interval depends on your water. Harder water leaves more sediment in the tank, so homes on harder water benefit from a yearly flush, while homes with softer water can often go two to three years between flushes. Water hardness across West Tennessee varies by location and water source, so there is no single number that fits every home.

Flushing matters because sediment settles at the bottom of the tank over time. As it builds up, the heater works harder, loses efficiency, and wears faster. Popping or rumbling sounds, slower hot water recovery, or less hot water than usual are signs the tank is due, regardless of how long it has been. If you are not sure where your water falls, we can take a look and recommend a schedule that fits your system.

Gas tankless heaters do not have a tank to flush, but they do need periodic descaling to clear mineral buildup. Once a year is a good general schedule, and harder water can call for it more often. Regular descaling keeps the unit running efficiently and is part of the tankless service we provide.

Full-Service Plumbing for Every Need

From a leaky faucet to a full repipe, our team has you covered.

Angela Gannon
Angela Gannon
Terry Presson with TennCo Plumbing was prompt, friendly and very helpful. When I couldn't get anyone to check out and service my tankless water heater, he did it for me at a reasonable price. I would recommend him for all your plumbing needs. He also helped me with referrals for other needs. Great guy!
Kristan Poyner
Kristan Poyner
TennCo came to install a water heater in Camden, TN and I couldn’t have asked for a more timely response and seamless installation process. Terry arrived promptly, surveyed the situation, and got started immediately. I was home during the install, and never knew he was there (no disruptions or inconveniences). He ensured everything was working properly before he finished, and even checked in with me later in the evening to make sure I had hot water and it was running smoothly. I would definitely recommend TennCo plumbing, and I guarantee you I’ll call Terry again if I have further plumbing issues arise in my home. Top notch service in a small town means a lot!
Horton Mobile
Horton Mobile
Came highly recommended and didn't disappoint.. super punctual and informative.. will definitely use again. Water Heater replacement... A+