Professional Tankless Water Heater Installation
A tankless water heater installation replaces your bulky storage tank with a compact unit that heats water on demand, so you get hot water the moment you open the tap and stop paying to keep 40 or 50 gallons warm all day. Sized and connected correctly, a tankless unit runs for 20 years or more. Sized wrong or vented poorly, it gives you lukewarm showers, failed inspections, and a voided warranty. This is a job for a licensed installer who gets the gas, venting, and water connections right the first time.
Call a licensed local pro now for a fast quote on professional tankless water heater installation.
What a Professional Tankless Installation Covers
A licensed pro sizes the unit to your home's peak hot water demand in gallons per minute, then handles every connection that keeps it safe and up to code:
- Mounting the unit indoors, or as an outdoor tankless water heater installation where the climate allows
- Upgrading or running the gas line, or the dedicated electrical circuits, to match the unit
- Direct venting for gas and condensing models
- Water connections with isolation valves so future flushing is simple
- Removing and recycling your old tank
- Pulling the permit and scheduling the inspection
You get a flat-rate quote up front that spells out exactly what the price includes, so no surprise line items show up after the work starts.
Gas vs. Electric Tankless: Which Fits Your Home
Gas units, natural gas and propane alike, deliver the high flow rates a busy household needs, but they often require a larger gas line, usually 3/4 inch, plus dedicated direct venting and combustion air. An installation electric tankless water heater skips the venting but pulls heavy power, so it may need several dedicated breakers, thicker wiring, and sometimes a panel upgrade. In colder regions, whole-house demand usually points to gas. We size both options against your incoming water temperature and fixture count, then tell you straight which one fits.
What Affects Your Installation Cost
We will not invent a number before we see your home. The price moves with real factors:
- Fuel type, and whether the gas line or electrical panel needs upgrading
- Unit size in GPM and BTU, and condensing versus non-condensing technology
- Length and routing of the vent run
- Where the unit is mounted and how far it sits from existing connections
- Removing the old tank and any re-piping a tank-to-tankless conversion needs
- Permit and inspection fees
For a full breakdown of pricing factors, see our tankless water heater installation cost guide.
Our Installation Process and Timeline
It starts with a free in-home assessment, where we measure demand, check your gas and electrical capacity, and hand you a written quote. On install day we shut off the utilities, remove the old tank, run or upgrade the gas line or circuits, set the venting, mount the unit, and connect the water with isolation valves. Then we fire it up, test every fixture, and walk you through the controls and maintenance. Most tank-to-tankless conversions finish in a single day. A panel upgrade, a long vent run, or a full re-pipe can add time, and we tell you that before we begin.
Permits, Code, and Warranty Handled for You
We pull the permit, meet the inspector, and register your manufacturer warranty on units from brands like Rinnai, Navien, Rheem, and Noritz. The installation itself is backed by our own workmanship warranty, so the labor is covered, not just the parts. We also help you claim utility rebates and the federal high-efficiency tax credit on qualifying condensing units, which a lot of homeowners miss.
Already have a unit acting up instead? We also handle tankless water heater repair and standard water heater repair.
Frequently Asked Questions
Can I install a tankless water heater myself?
We do not recommend it. Gas, venting, and electrical work usually need a permit and inspection, and one mistake can void the warranty or create a carbon monoxide or fire hazard. Most manufacturers only honor the warranty on a licensed installation.
How long does a tankless installation take?
A straightforward tank-to-tankless conversion is typically a one-day job. Adding a larger gas line, a longer vent run, or a panel upgrade can push it to a day and a half.
Do I need a larger gas line or special plumbing?
Often yes. Gas tankless units burn more BTU than a tank heater, so the existing line may be too small. We check the line size and upgrade it when needed, and quote it before any work starts.
How long do tankless water heaters last?
Around 20 years with annual descaling, nearly double the lifespan of a typical tank heater.
Is a tankless water heater worth the cost?
For most households, yes. You get endless hot water, lower standby energy loss, and a smaller footprint. The install costs more than a tank up front, but the longer lifespan and energy savings usually close the gap.
Schedule Your Installation
Ready for endless hot water and a clean, code-compliant setup? Call a licensed local pro now for a fast quote on your tankless water heater installation. Replacing a standard tank instead? Ask about standard tank water heater installation too.