Tankless water heater installation
What tankless actually does
A tankless water heater heats the water as it flows through, on demand, instead of keeping a tank full of hot water sitting in a closet. There is no stored tank, so there is no tank to rust out and leak.
In practice that means hot water that does not run out under normal use, no standby heat loss from a tank cooling off all day, and a unit that hangs on the wall instead of taking up floor space. It also means the unit has to heat the water instantly, which asks more of the gas line or the electrical service than a tank heater ever does.
When it's the right call, and when it isn't
A tankless is a good fit for a household that keeps running out of hot water. If the last shower of the morning is always cold, on-demand heat fixes that. It is also a good fit where the tank sits somewhere a leak would do real damage, like an attic or a finished closet, because there is no tank of water to let go.
A long-term owner is a good fit, because the higher up-front cost pays back over years of lower running costs. A new build is a good fit too, because the gas line, the venting and the location can be planned in from the start instead of worked around.
It is a poor fit for a straight swap in a house where the gas line or the electrical service will not carry a tankless. Upsizing the gas line or pulling a new circuit turns a swap into a real project, and the cost follows. It is a poor fit for a short-term owner who will not be in the house long enough to see the payback.
It is also a poor fit for a household with heavy simultaneous demand and an undersized unit. Running two showers, the dishwasher and the washing machine at once asks more than a small tankless can heat. The unit has to be sized to the peak load, or the temperature drops.
Here is the honest version: a tankless is not automatically better than a good tank heater. For some houses it is the right call. For others a tank heater does the job for less money. Jacob will tell you which side of that line your house is on, because being straight about it is worth more than a sale.
What makes an install cost more than a tank swap
A tankless install is rarely a one-for-one swap with a tank heater. Here is what moves the cost. The real number comes from the free on-site estimate.
- Gas line sizing. A gas tankless draws a large burst of gas at once. The existing line is often too small and has to be upsized to the unit. See JK Ranch's gas line work.
- Venting. A tankless vents differently than a tank heater, usually with a dedicated stainless steel vent run. The old vent will not carry over.
- Electrical. An electric tankless pulls a heavy load and often needs its own circuit pulled to the unit. The panel has to have room for it.
- Condensate. A high-efficiency gas tankless produces condensate that has to drain somewhere, and that drain may not exist yet.
- Water quality. Hard water shortens the life of a tankless, so a softener or filtration is often part of doing the install right.
- Location change. Sometimes the tankless goes where the tank was. Sometimes the venting or the gas line means it has to move, and rerouting pipe adds to the job.
Hard water
Hard water is a real issue across this service area, especially out on a well. The minerals in the water settle out as scale inside the heat exchanger, where the water gets heated. Scale builds up layer by layer.
A scaled heat exchanger heats slower, works harder, and fails sooner. That is why descaling a tankless on a schedule matters the way flushing a tank does not. A softener or a filtration system ahead of the unit keeps the scale from forming in the first place, and it extends the life of the unit by years. Jacob will tell you what the water in your area calls for.
Permits
Inside city limits, a tankless install normally requires a plumbing permit, and JK Ranch pulls it. The city building department handles the inspection.
Out in the unincorporated county, there is often no permit and no inspection at all. The gas connection, the venting and the condensate drain still have to be right, because nobody else is coming to check. That is where the licensed plumber is the only real check on the work.
Tankless questions
Will a tankless really never run out of hot water?
It will keep heating as long as the water runs, but only at the rate the unit can heat it. If you pull more hot water at once than the unit can handle, the temperature drops. A tankless sized right for the house handles normal use without running out. One sized too small will not.
Do I need a bigger gas line?
A gas tankless draws a lot more gas at once than a tank heater does, because it has to heat the water instantly instead of over hours. The existing gas line is often not big enough, and upsizing it is part of the install. Jacob sizes it out before any work starts so there are no surprises.
Does hard water hurt it?
Yes. Scale builds up inside the heat exchanger on hard water, and a scaled heat exchanger heats slower and fails sooner. Descaling on a schedule matters, and a softener or filtration extends the life of the unit. Hard water is common across this area, especially on a well.
How long do they last?
A tankless unit typically runs longer than a tank heater, often around twenty years, because there is no tank of water rusting from the inside. That assumes it gets maintained. A tankless that never gets descaled will not see that life.
Is it worth it in a house I might sell in three years?
Probably not. A tankless costs more up front than a tank swap, and the savings show up over years of lower running costs. If you are out of the house in three years, you will not see the payback, and the next owner gets it. A good tank heater is the better call in that case. Jacob will tell you that straight.
Get on the schedule
(979) 206-0888Call and you get Jacob. Or send a request and he will call you back.
Thinking about going tankless?
Call Jacob. He'll look at the house, the gas line and the water, and tell you straight whether tankless is the right call or whether a tank heater does the job for less. Free estimates on any job.
Monday to Saturday, 6:00 AM to 10:00 PM. Closed Sunday. After-hours and Saturday calls carry a $75 non-refundable service fee.