Why do so many people switch to tankless? Mostly three things: hot water that keeps coming, lower standby energy use, and space. A tankless heater stays idle until you open a tap, then fires a high-output burner or electric element and heats the water in passing. With no stored water to keep warm, it wastes less energy between uses, and with regular descaling it can last twenty years or more. It is not magic, though. Performance depends entirely on sizing and installation, which is where most of our work in Franklin, TN goes.
The most important step happens before anything is installed. We total your peak demand in gallons per minute, such as a shower, a kitchen sink, and the dishwasher at once, and compare it against the temperature rise your incoming water needs in winter. That tells us the real capacity you need. Next we check the supply side. Gas tankless units fire at very high input, so a half-inch line that fed an old tank is often too small. Condensing models vent through PVC or polypropylene and need a condensate drain, while non-condensing units need stainless steel venting. Electric models are their own case, often needing multiple large breakers and sometimes a service upgrade.
Details decide how well a tankless system ages. We install service valves on every unit so descaling is quick, route the relief valve discharge properly, build the gas connection with a sediment trap, and run venting exactly to the manufacturer's specifications. Hard water gets addressed up front with honest advice on scale protection, because scale is what clogs heat exchangers. We also offer recirculation if a far bathroom takes too long to get hot. Permits are pulled where required, and you get a walkthrough of settings, error codes, and upkeep. For tankless installation in Franklin, call (615) 237-6853.
Most of our service calls are for Water Heater Installation in Franklin. That's the place to start for most homes.
Symptoms That Mean It's Time to Call
Water heaters usually give plenty of warning before they fail, as long as you know what to look and listen for. If any of the following sound familiar, it's worth having the unit checked:
- Showers turning lukewarm before everyone gets a turn
- A remodel that would benefit from a compact wall-mounted heater
- Energy bills that reflect a tank heating water around the clock
- A water heater near the end of its service life, making this a natural time to switch
- An addition or guest suite that is a long run from the main heater
- Renovation work that makes gas line and vent changes easier to fit in
- Wanting a unit that can last up to twice as long as a typical tank
- Adding a bathroom, soaking tub, or larger shower that needs more hot water
A Slow Leak Never Stays Slow
Left alone, even minor symptoms like rumbling or temperatures that swing from hot to warm tend to mean the heater is working its way toward a breakdown. If you notice any of these signs, contact Franklin Water Heater at (615) 237-6853 for a prompt inspection.
Talk to Us About Tankless Water Heater Installation
We'll diagnose the problem and give you a straight answer on the fix.
Call (615) 237-6853 NowFrequently Asked Questions About Tankless Water Heater Installation
Why This Job Calls for a Pro
Could a handy homeowner install tankless? Because the risks and the details stack up quickly. Gas piping must be sized for a burner that may draw nearly 199,000 BTU, and leaks or undersized lines are both dangerous and costly. Venting has to match the unit exactly, with the right material, slope, and termination clearances, or combustion gases can end up where they do not belong. Electric models may need a panel upgrade, and warranty terms often depend on a qualified installation. Permits and inspections are common requirements as well.
We take the guesswork out of going tankless. That starts with sizing for your busiest hour and coldest water, then confirming your gas, venting, and electrical can support the unit. We install with service valves for descaling, proper relief valve discharge, and venting built to the manual, then run the unit at full flow before we leave. If a tankless unit is not the best choice for your home, because of cost, supply limits, or how you use hot water, we say so and help you compare other options honestly.
How We Handle Tankless Water Heater Installation
We follow the same careful process on every water heater, whether it's a quick thermostat swap or a full tankless conversion. Here's a look at each step our team takes:
Demand Assessment & Sizing
Sizing starts with your peak demand in GPM and the temperature rise needed for cold winter water. That pairing tells us which unit will actually keep up.
Gas, Venting & Power Check
We confirm the gas line and meter can feed the burner's full BTU demand, plan the right venting, and check the panel for electric units before any price is set.
Installation to Spec
Every connection follows the manual and local code: gas, venting, relief valve discharge, condensate, and isolation valves for future maintenance, with permits handled where required.
Startup & Verification
Startup includes a full-flow test, a gas pressure check with the burner at high fire, a leak check on every joint, and a plain explanation of settings and maintenance.
Not Sure What You Need?
Call Franklin Water Heater to talk through your situation with an experienced technician.
Tap to Call (615) 237-6853Prevention Tips That Actually Help
A little routine care goes a long way toward keeping a water heater running well past its expected lifespan. Follow these tips from our technicians:
- Treating hard water protects the heat exchanger from mineral buildup
- Write down any error codes and call early rather than resetting repeatedly
- Set the temperature around 120F for safety and efficiency
- Protect outdoor or garage units from freezing, and keep power on during cold snaps so freeze protection works
- Clean the inlet water filter screen a few times a year
- Descale the heat exchanger once a year, or more often with hard water
- Check the vent cap outside for nests, debris, or buildup
Comparing DIY and Professional Work
A few tasks, like checking the temperature setting or lifting the relief valve lever to test it, are fine for homeowners, but most water heater work involves gas lines, venting, 240-volt circuits, or a tank full of scalding water, and that belongs with a professional. Consider the following comparison:
| Factor | Doing It Yourself | Hiring a Pro |
|---|---|---|
| Capacity | Chosen by brand or price alone | Sized by GPM and winter temperature rise |
| Gas Line | Old half-inch line reused regardless of load | Gas pressure tested at high fire |
| Venting | Exhaust risk from improper venting | Correct vent type, length, and termination |
| Power Needs | Overloaded circuits and tripped breakers | Service upgrades flagged up front |
| Maintenance Access | No isolation valves, so descaling is a hassle | Built for easy annual service |
| Result | Lukewarm water and error codes | Tested at full flow and set up to last |
Talk to Our Tankless Water Heater Installation Team
Every day a leak or a failing part goes unchecked puts more stress on the tank. Get Franklin Water Heater on the job today.
Get Help: (615) 237-6853Areas We Serve for Tankless Water Heater Installation
Our technicians handle tankless water heater installation throughout Franklin and the surrounding communities, with the same upfront pricing everywhere we work.