- HEP Plumbing
- Endless Hot Water

Endless Hot Water
Endless Hot Water | Tankless Water Heater Install | Plumbing | Johnson City
Imagine stepping into a steamy shower on a frosty Johnson City morning, confident the hot water will never run out. That’s the everyday luxury HEP delivers with our endless hot water plumbing solutions. Our technicians specialize in tankless water heater install, replacing bulky, outdated tanks with sleek, high-efficiency units that only heat water when you need it—no standby losses, no unexpected cold blasts, just continuous comfort.
Beyond endless hot water, you’ll enjoy lower energy bills, reclaimed closet space, and a system designed to last twice as long as a traditional tank. We handle every detail, from sizing and venting to permits and clean-up, so you can relax while we future-proof your home’s plumbing. Ready to make your Johnson City home smarter, greener, and cozier? Call HEP today and start savoring hot water without limits.
FAQs
What are the main benefits of installing a tankless water heater in my Johnson City home?
Tankless units heat water on demand, so you never run out of hot water—ideal for families with multiple showers or large soaking tubs. Because they only fire up when a hot-water fixture opens, they use 24–40 % less energy than a storage-tank heater, lowering monthly utility bills. The wall-mounted design frees up several square feet of floor space, and most models last 18–20 years—roughly double the life of a tank. Johnson City homeowners may also qualify for a federal 30 % tax credit (up to $600) and occasional TVA or local gas utility rebates, further improving the payback.
How does a tankless system deliver “endless” hot water?
Inside the appliance, a flow sensor detects when you open a hot-water tap. That signal triggers a high-efficiency burner (or electric element) to ignite and instantly heat water as it passes through a copper or stainless-steel heat exchanger. Because water is heated continuously while it flows, there is no storage tank to deplete—so as long as the unit is properly sized, you can run back-to-back showers or simultaneous fixtures without experiencing a cold-water gap.
Is my house compatible with a tankless water heater, and how do I choose the right size?
Almost every Johnson City residence can be retrofitted, but a quick site inspection is required. Gas models need a ¾-inch gas line (or a regulator upgrade) and Category III/IV venting through an exterior wall or roof. Electric units require 120–200 amps of service and dedicated breakers. To size the unit, we calculate your peak flow rate (gallons per minute for showers, appliances, etc.) and the local temperature rise (≈ 70 °F in winter here). For most three-bath homes, a 9–11 GPM gas model or an 18–27 kW electric model is sufficient, but we confirm during the estimate.
What does a typical tankless installation cost in Johnson City, and will it really save me money?
Full turnkey installation—including the unit, vent kit, gas or electrical modifications, permits, and labor—usually runs $3,200–$4,900 for gas and $2,800–$4,200 for electric. Annual energy savings average $100–$150 compared with a standard 50-gallon tank, and many homeowners see payback in 5–7 years when factoring in utility rebates and the federal tax credit. Long service life and reduced risk of tank leaks add further lifetime value.
How long does the installation take, and will I be without water?
Most replacements are completed in one day. We arrive in the morning, drain and remove your old tank, mount and pipe the new unit, upgrade venting or wiring if needed, and perform a full combustion or electrical safety test. Your water will be shut off for roughly 1–2 hours and gas or power for a similar window. We always schedule at your convenience and can provide temporary water access if required.
What maintenance does a tankless water heater need, and do you offer service plans?
To keep efficiency high and preserve the warranty, manufacturers recommend an annual service: flushing the heat exchanger with a mild descaling solution, cleaning the water filter, and inspecting the burner or heating elements. In Johnson City’s moderately hard water (≈ 5–7 grains per gallon), this takes about 45 minutes. We offer affordable maintenance plans that include the yearly flush, priority scheduling, and parts-and-labor discounts, so your system stays in peak condition for decades.