Tankless Water Heater Installation Raleigh NC
Many homeowners consider switching to tankless when their current water heater starts failing or when the house regularly runs out of hot water. Tankless systems heat water on demand instead of storing it in a tank, which means a properly sized unit can provide continuous hot water.
CK’s Plumbing & Backflow provides tankless water heater installation in Raleigh NC for homeowners across Wake County. We evaluate whether the home is a good fit, size the system correctly, and install the unit so it operates safely and efficiently.
Is Your Home a Good Fit for Tankless?
Tankless systems work well in many homes, but the installation requirements are different from a traditional tank heater. Before installing a unit, we evaluate the plumbing system, fuel type, and hot water demand of the home.
Things we typically review include:
- Gas supply capacity for gas tankless systems
- Electrical requirements for electric units
- Proper venting for combustion systems
- Location of the current water heater
- Overall household hot water demand
Confirming these factors ahead of time helps prevent surprises during installation.
Gas vs Electric Tankless Water Heaters
Tankless systems are usually installed as either gas or electric units.
Gas Tankless Water Heater Installation
Gas tankless systems are the most common choice for whole-home hot water. These systems require proper venting and sufficient gas supply to operate efficiently.
Electric Tankless Installation
Electric tankless units are sometimes used for smaller applications or homes without gas service. These systems rely on electrical capacity and may be used for point-of-use installations.
Our plumbers install both gas tankless water heaters and electric tankless systems depending on the needs of the home.
Tankless Installation Requirements
Installing a tankless system involves more than simply swapping the old unit.
A typical installation may include:
- Gas line upgrades if additional capacity is required
- New venting for combustion units
- Electrical connections or circuit upgrades
- Water line adjustments or shutoff valves
- Condensate drainage for high-efficiency units
Because CK’s Plumbing & Backflow also handles
gas services
and plumbing modifications, we can complete the supporting work required for the installation.
What to Expect on Installation Day
Tankless water heater installation is usually completed in a single visit once the system and installation plan are confirmed.
The process typically includes:
- Removal of the existing water heater
- Installation of the new tankless unit
- Connection of gas, water, and venting systems
- System testing and startup
- Verification that hot water is operating properly
Once installation is complete, homeowners have continuous hot water without relying on a storage tank.
Rinnai Tankless Water Heater Installation
Many homeowners choose Rinnai tankless water heaters because of their reliability and performance. CK’s Plumbing & Backflow installs Rinnai systems and other major tankless brands for homes across Raleigh and Wake County.
Proper sizing and installation according to manufacturer specifications ensures the system performs correctly for the home’s hot water demand.
Schedule Tankless Water Heater Installation in Raleigh
If you're considering a tankless system, the first step is confirming that the home is a good fit for the installation.
CK’s Plumbing & Backflow provides tankless water heater installation Raleigh NC homeowners rely on throughout Wake County and the Triangle. Our plumbers evaluate the system requirements, explain the installation options, and complete the work so the system runs reliably.
Tankless Water Heater FAQs
Is my house a good fit for a tankless water heater?
Many homes are, but not all installations are simple swaps. We look at gas capacity, electrical requirements, venting, water quality, and how much hot water the house uses at one time. That tells us whether tankless is a good fit and what supporting work may be needed.
How much does it cost to install a tankless water heater in Raleigh?
The cost depends on the unit, the size of the home, and whether the installation needs gas line work, venting changes, electrical upgrades, or plumbing modifications. A house that is already set up for tankless is usually more straightforward than one that needs supporting work first.
Do I need a gas line upgrade for tankless?
Sometimes. Gas tankless water heaters often require more gas capacity than a standard tank heater. If the existing gas line is undersized, it may need to be upgraded so the system can operate correctly.
Can you install a Rinnai tankless water heater?
Yes. We install Rinnai tankless water heaters along with other major tankless systems. Proper sizing and installation matter just as much as the brand, so we make sure the system matches the home and is installed to spec.
How long does tankless installation take?
Most tankless installations are completed in one day once the system and scope are confirmed. The timeline can change if the job also requires gas work, venting changes, electrical upgrades, or plumbing modifications.
Is tankless worth it?
For many homeowners, yes. A tankless system can free up space, provide continuous hot water, and avoid the standby heating losses that come with a storage tank. Whether it makes sense depends on the house, the household’s hot water use, and the cost of the installation.
Can I replace a tank water heater with a tankless unit?
Yes, but it is not always a simple one-for-one swap. Tankless systems often require different venting, gas supply, drainage, or electrical setup. That’s why we confirm fit before installation instead of guessing on install day.



