Tampa Bay water sits around 7 to 10 grains of hardness. That mineral load settles in a tank as sediment. In a tankless unit it plates the heat exchanger. The water still gets hot for a while. Flow drops. The unit starts to short-cycle. Then it throws a scale code or a cold burst in the shower.
A tankless water heater installation in Tampa has to match that water and the gas or panel. The brochure photo does not.
What scale does inside the unit
A tank stores 40 or 50 gallons and reheats the batch. Scale falls to the bottom and buries the element. You have seen that cut-open tank on our videos.
A tankless unit has no tank. Cold water runs through a narrow heat exchanger the moment you open a tap. Calcium sticks to those passages. The opening gets smaller. The burner works harder to hit the set temperature. Incoming Tampa groundwater is already cool. A scaled exchanger cannot keep up when two showers run.
An annual flush with vinegar or a manufacturer descaler dissolves that film if you start before the passages close. Skip three summers and the flush is a long visit, or a heat exchanger.
Flush, softener, or both
Flush the unit once a year if you stay on city water with no treatment. That keeps most warranties valid. Rheem, A.O. Smith, and the electric lines we install all expect that service in hard-water markets.
A water softener in front of the unit slows the scale. It does not replace the flush. Salt-free conditioners help some surfaces. They do not strip a heat exchanger that is already plated.
If you are replacing a tank that died at year eight, treat the water before you hang the new unit. The next heater fails the same way if the incoming line is unchanged.
Gas line, vent, and the electric panel
A gas tankless unit often needs a larger gas pipe than the 40-gallon tank it replaces. The old tank sipped gas. The tankless unit asks for a lot of BTUs at once. Undersized pipe is the usual reason a new unit flames out when the second shower opens.
An electric tankless unit asks the panel for a continuous load. A 100-amp service that already runs the AC and dryer rarely has room. That is a panel conversation before anyone orders the box, not after it is on the wall.
Venting on gas units has to match the model and the run through a Tampa attic. Condensing units use PVC. Non-condensing units need the metal vent the listing calls for. Mixing those is how a job fails inspection.
How to size it
Square footage is the wrong number. Count the fixtures that run at the same time and the incoming water temperature. Two showers plus a dishwasher is a different unit than one bath.
A unit that is too small runs lukewarm at 7 a.m. A unit that is too large costs more to buy and still scales if you skip the flush.
What the install actually includes
Permit, isolation valves for the yearly flush, the gas or electrical work, and a flow test before anyone leaves. If the old tank sat in a drain pan with a rust ring, that pan and the T&P discharge get checked too.
We do not publish a Titan price here. Gas, electric, vent, and whether the panel or the gas meter has to move all change the number. You get a flat rate after we see the wall and the service.
If the tank is already leaking, that is water heater repair or emergency plumbing the same day, Monday through Saturday. If you are planning the swap, start on tankless water heater installation and ask for the hardness and the load calc in the same visit. (813) 933-8010. License CFC1430231 and EC13012958.
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