Tankless water heater replacement in Saratoga Springs, UT usually costs more than swapping a storage tank, mostly because of the gas supply, the vent and the labor. National cost guides put an installed tankless unit between about $1,300 and $4,500. Those ranges are named below and are not a quote from us. Your own number moves with three things: whether the gas pipe can feed the new burner, whether the old vent can be reused, and the wall has room.
Most of the price gap comes down to the first two items. A tank heater puts up with an older vent and a small gas pipe, and a tankless unit often does not. Read the table first and then the checklist, and call (385) 488-1892 when you want a clear price before work starts.
What four named cost guides report for tankless units
We pulled these figures from public cost pages and list each one by name. They disagree because each guide counts a different job, such as a 150,000 BTU whole-house gas model in one case and a general tankless replacement in another.
| Source (national) | Reported range | What the source describes |
|---|---|---|
| FIXR, page updated January 31, 2025 | $2,500 to $4,500, average $2,811 | Installed whole-house gas model rated at 150,000 BTU |
| Angi | $1,400 to $3,900 | Tankless system replacement cost range |
| Bob Vila, citing Angi and HomeAdvisor | $1,333 to $3,721, average $2,527 | Tankless hot water heater cost, national average |
| This Old House | $2,100 to $4,000, about $2,800 on average | Tankless water heater installation |
These are national or typical ranges from the named sources. They are not a quote, and Utah prices can differ.
Why a tankless swap costs more than a tank swap
Angi lists labor at $150 to $450 to replace a tank-style heater and $600 to $1,900 to replace a tankless unit. The extra hours go into the gas connection, the vent and the water fittings, and FIXR puts a tankless install at roughly 6 to 10 hours of work.
If you are changing from a tank to tankless, the bill grows again. Angi shows $150 to $2,500 for the conversion, and FIXR estimates about $1,700 for a gas conversion that includes a new gas line. That spread is wide because it depends on what is already in your wall.
| Add-on | Range reported | Named source (national) |
|---|---|---|
| New gas line | Up to $800 extra | FIXR |
| New gas line, if needed | $500 to $1,000 | This Old House |
| Venting in a cold climate | Up to $400 | FIXR |
| Venting for a tankless unit | $500 to $1,000 | This Old House |
| Electrical work for the unit | $300 to $800 | This Old House |
| Permit | $25 to $300 | Angi |
| Removing the old unit | $500 or more | Bob Vila and FIXR |
Ranges are national and overlap because each guide counts different jobs.
Gas line, vent, power and mounting: the four checks that set the price
Gas supply
A tankless burner draws a large amount of gas at once. The pipe that fed a tank heater may be too small, and the new unit's manual states the supply it needs.
Vent path
Tankless units use vent materials made for them, and the run has to fit the manual. A short, straight path is cheaper than one through a finished ceiling.
Power
Many units need an outlet or circuit for the fan and controls. If there is none near the heater, an electrician's time gets added.
Wall and access
The unit hangs on a wall with clearances. A tight closet or a finished space can add wall repair or an access panel, which FIXR prices at about $100 to $300 for a door.
A plumber who walks the path from gas meter to heater can name these four before quoting. A phone price given without that walk is a guess.
Need a plumber right now?
The 24/7 line is open. A dispatcher will book a licensed plumber.
Five questions to settle before you ask for a number
What to have ready when you call
- Is the current heater gas or electric, and are you keeping that fuel?
- Where is the gas meter, and how far is the run to the heater?
- Can you photograph the existing vent, the wall around it and the data label on the old unit?
- Is there an outlet within reach of the mounting spot?
- Do you want to keep the water heater in the same place, or is a move on the table?
When the tank has already failed
A tank that leaks onto the floor cannot wait for a long tankless project. We can put in a replacement tank the same day when the schedule allows, then plan the tankless switch later. That order costs you two jobs, but it stops the water first.
If you are still deciding, our water heater replacement page covers the tank side, and the tankless water heater page covers the install, repair and flush work we do on these units.
Comparing two quotes honestly
Ask each plumber to list the unit model, the vent material, any gas pipe change, the permit, haul-away of the old heater and the isolation valves. If one quote leaves out the gas line and another includes it, the cheaper number is not the cheaper job.
Neighbors across the county run into the same checklist. We dispatch to homes in Lehi and Eagle Mountain as well, and the questions above apply the same way there.
Saratoga Springs: water quality, gas and permits for a tankless swap
The City of Saratoga Springs 2024 Annual Drinking Water Quality Report lists total dissolved solids from 144 to 672 ppm across its wells, with a 2000 ppm limit. The report lists no hardness value, and dissolved solids are not the same measure as hardness. Ask your water utility for the hardness number or test your tap, because a tankless heat exchanger scales faster in harder water and that changes the maintenance plan.
Natural gas in Utah comes from Enbridge Gas. If the new unit needs more gas than the old heater, the plumber sizes the pipe for it. The city building page lists the 2021 International Plumbing Code as adopted, and permit rules vary by job, so ask the Saratoga Springs building department before work starts and have the plumber confirm which rules apply.
Source: city utility page, city building page
Frequently asked questions
FIXR reports about 6 to 10 hours of work and This Old House reports about 4 to 6 hours for tankless installs, so the national guides overlap but do not agree. A new gas line or vent run adds time. Ask the plumber for the expected hours when they see the wall.
It depends on your gas or power rates. Bob Vila reports about $200 per year to run a natural gas tankless unit and about $350 for propane, as national figures. Compare that to your current utility bill, and read the unit's efficiency label before you decide.
Permit rules vary by job, so ask the Saratoga Springs building department before work starts. Angi reports permits at $25 to $300 nationally, and the plumber should tell you who pulls the permit.
Sometimes, but that is a call for a plumber who has the new unit's manual in hand. A vent that worked for a tank may not be the right material or size for a tankless burner. We will not guess from a phone call.
It can, because mineral scale builds inside the heat exchanger. The city's 2024 water report lists total dissolved solids of 144 to 672 ppm and no hardness value, so test your tap or ask the water utility before you pick a model or plan a softener.
Still unsure? Call (385) 488-1892
Sources and references
Local facts on this page come from public pages like these. The city lists the 2021 International Plumbing Code (IPC) as adopted, and permit rules vary by job, so ask the Saratoga Springs building department before work starts. Page last reviewed 2026-10-15.