The short answer
A tank heater keeps dozens of gallons hot all day, and that standing heat leaks away. A tankless heater heats water only when you open a tap, so it avoids that standby loss. Savings are real, and they are usually modest for a small household and larger for one that uses a lot of hot water.
The catch is the cost to install. A tankless unit costs more than a tank, and many homes need a larger gas line and a new vent. Whether it pays back depends on your use, your fuel prices and how long you stay in the house.
Where the savings come from
No standby loss
A tank loses heat all day, even when no one is using hot water.
Heating on demand
The unit heats only the water you use.
A longer service life
Many tankless units last about twenty years with maintenance, compared with about ten for many tanks.
Space
A wall-mounted unit frees floor space in a small utility room.
What offsets the savings
| Cost | Why it adds up | How to reduce it |
|---|---|---|
| Higher install cost | Unit price plus vent, gas and electrical work | Pick a unit sized for your use, no larger |
| Gas line upgrade | Tankless units draw more gas at once | Ask for a load calculation first |
| Descaling | Scale builds in the heat exchanger | Flush yearly, or use a softener |
| Longer waits | A short delay for hot water at far taps | Add a recirculation loop if needed |
| Repair complexity | Electronics and sensors | Choose a model with local service |
Your plumber checks each of these before recommending a unit.
Curious about tankless?
Call the 24/7 line about thinking about tankless and we will book the next appointment that fits.
Is your household a good candidate
Tankless suits homes with high hot water demand, several bathrooms or a large tub, and homes where the tank is in the way. It suits owners who plan to stay for years, because the payback takes time. It suits homes where running out of hot water is a real problem.
It suits less well a one or two person home with low use, a house that will be sold soon, or a house with a small gas line that would cost a lot to upsize. A new tank, or a heat pump tank, may be the better buy.
- Count the people and the bathrooms that run at the same time
- Check the gas line size and the vent path
- Ask for a written load calculation
- Ask for the unit's maintenance schedule
- Compare the total installed price, not just the unit
- Plan to stay in the house long enough for payback
What a plumber looks at before a quote
Gas and vent
We check the gas line size and where a vent can exit the house.
Water quality
We ask about hardness and whether you have a softener.
Peak demand
We tally the fixtures that can run at once.
Layout
We find a wall for the unit and a drain for the condensate.
Quote
You hear a clear price before work starts, including any gas or vent work.
We do not publish an install price, because gas and venting work varies a lot between houses. A straight swap in a house with a large gas line costs far less than a conversion in a house that needs everything new. Compare totals and ask what is included.
A simple way to estimate your own savings
You do not need a spreadsheet to get a rough idea. Start with what you spend to heat water now. Your gas or electric bill, and your own sense of how much of it is water heating, gives a ballpark. A tankless unit saves part of that, because it removes standby loss, and the saving is larger the more hot water you use.
Then add the extras. A larger gas line, a new vent, a condensate drain and a yearly flush all have a cost. Subtract what a tank would cost to replace, and divide the difference by your yearly saving. That gives the years to break even. If the answer is longer than you plan to stay in the house, a tank is the better buy.
| Step | What to gather | Where to get it |
|---|---|---|
| 1. Current water heating cost | A year of utility bills | Your utility account |
| 2. Tankless install quote | A written total with gas and vent work | A plumber |
| 3. Tank replacement quote | A written total for the same house | A plumber |
| 4. Yearly maintenance | Flush and service costs | The maker and your plumber |
| 5. Time in the house | How long you plan to stay | You |
Alternatives worth a look
A tankless unit is not the only way to save. A well insulated tank with a lower temperature setting, a heat pump tank and a recirculation pump with a timer each cut waste in different ways. A plumber who offers only one type is selling, not advising.
Ask for two options in writing, including the installed price and the running cost assumptions. Then choose the one that fits your household and your plans for the house.
Tankless water heaters and Massillon water
Massillon's water mostly comes from Aqua Ohio's Massillon Division, which draws from ten wells in a sand and gravel aquifer in the Tuscarawas Valley and buys some water from North Canton. We do not quote a hardness number, because the utility's report does not give one. Ask Aqua Ohio or test your tap.
Hard water builds scale faster in a tankless heat exchanger than in a tank, so a water softener and a yearly flush protect the savings. Gas prices change, so we do not promise a dollar figure. Our water heater installation page explains the planning, and the Perry Township page lists towns where we install.
Tankless installs follow the maker's instructions and the standards in the Ohio Plumbing Code, OAC Chapter 4101:3.
Massillon tankless questions
Usually somewhat, especially in a household with high use. It depends on the fuel price and how much hot water you use.
Often yes, because the unit needs a lot of gas at once. A plumber checks.
Many last about twenty years with yearly flushing, though water quality changes that.
Yes, as long as the unit, vent and condensate drain are installed properly and protected from freezing.
Yes. We cover Navarre and nearby towns. Call and we will book the next appointment.