Plumbco installs, converts, repairs, and maintains tankless water heater systems from Navien, Rinnai, and Rheem — sized right for your home and backed with a written warranty.
“Sizing a tankless unit wrong is the number one reason homeowners end up with cold showers at peak demand. We size based on your actual usage — not the cheapest unit that fits.”
Tankless water heaters deliver hot water on demand and can cut water heating costs by 25–35% compared to tank systems. But proper sizing, correct gas line capacity, and right venting configuration are what separate a system that performs from one that underwhelms. We handle the full conversion — old tank removal, gas line assessment and upgrade if needed, installation, and permit.
Avg. Water Heating Cost Reduction
Expected Lifespan vs. 10–12 for Tank Units
Installation on Most Jobs
Full installation with proper sizing, gas line assessment, venting configuration, and permit coordination. We commission and test before we leave.
Old tank removed, gas line and venting assessed and upgraded as needed, new tankless unit installed — all in one visit.
Error codes, ignition failures, inconsistent output, cold water sandwich — we diagnose and repair all major brands, typically same-day.
Mineral buildup reduces efficiency and shortens lifespan. Annual descaling keeps the unit at rated performance and maintains manufacturer warranty compliance.
Get instant hot water at every fixture without waiting — a recirc pump and timer loop eliminates the cold-water wait.
We evaluate your home's hot water demand, existing gas line capacity, and venting setup before recommending any unit or brand.
You get an itemized quote covering the unit, installation, any gas line work, and permit fees — locked before anything is touched.
We install the unit, configure the venting, connect the gas line, and test output temperature and flow rate before calling it done.
Permit closed, warranty documentation handed to you, and a maintenance plan offered to keep the system performing long-term.
We calculate your home's actual GPM demand before recommending a unit — so peak demand is met, not missed.
Navien, Rinnai, and Rheem — we install and service all three and recommend based on your home's needs, not our margin.
Conversions often require a gas line upgrade. We handle it ourselves — no separate contractor, no scheduling delay.
Mineral buildup is the silent killer of tankless systems. We offer annual descaling plans to protect your investment long-term.
“We converted from a 40-gallon tank to a Navien. Plumbco sized it right, upgraded our gas line, handled the permit, and hot water is genuinely endless. Our gas bill dropped noticeably the first month.”
Homeowners · Marlboro, NJ
Free on-site assessment — we’ll size the right unit, check your gas line, and give you a written quote before anything is touched.
