On-demand Units
On-demand Units | Tankless Water Heater Install | Plumbing | Maryville
When your Maryville home is ready for endless hot water, lower energy bills, and a system that never hogs valuable floor space, HEP’s expert team is here to make it happen. Our licensed plumbers specialize in tankless water heater install, bringing the latest on-demand technology straight to your doorstep—often in just one day. We handle everything from precise sizing and venting to code-compliant gas or electric hookups, so you can enjoy reliable, efficient hot water without a second thought.
HEP has earned a reputation across Blount County for transparent pricing, punctual service, and craftsmanship that stands the test of time. Backed by 24/7 emergency support and industry-leading warranties, we’re committed to giving Maryville homeowners total peace of mind. Upgrade once, enjoy for decades—schedule your tankless transformation with HEP today and feel the difference every shower, laundry load, and dish cycle.
FAQs
What are the main advantages of switching to a tankless water heater for my Maryville home?
Tankless (on-demand) units heat water only when you open a tap, so they eliminate standby heat loss and can cut water-heating energy use by up to 40 %. You also get virtually unlimited hot water, a unit that hangs on the wall to free up floor space, and a service life that typically runs 18–20 years—almost twice that of a standard tank. Because Maryville winters are moderate, tankless heaters rarely struggle with incoming water temperatures, so their efficiency ratings stay high year-round.
How do I determine the correct size or flow-rate for a tankless unit?
Tankless systems are sized by gallons per minute (GPM) rather than storage capacity. First, add up the flow rates of the fixtures you might run at the same time—for example, a shower (2.0 GPM) + dishwasher (1.5 GPM) = 3.5 GPM. Then check the temperature rise required: subtract your incoming groundwater temperature (about 55 °F in Maryville) from your desired hot-water temperature (about 120 °F). A rise of 65 °F at 3.5 GPM means you’d choose a unit rated for roughly 4 GPM at that temperature rise. Our technicians perform this calculation for you during the free in-home assessment to ensure the unit never falls short.
Should I choose a gas or electric tankless water heater?
Natural-gas or propane models deliver higher flow rates and are the most popular choice in Maryville, where gas service is widely available. They cost more up front but have lower operating costs and qualify for many ENERGY STAR rebates. Electric units are simpler to install (no venting), cost less initially, and are perfect for small apartments, point-of-use applications, or homes without gas lines—but they may require heavy-gauge wiring and upgraded breakers. We’ll review your home’s fuel options, electrical panel capacity, and hot-water demands to help you pick the most cost-effective solution.
What is involved in the installation process and how long will it take?
A typical replacement of a tank-style water heater with a gas tankless unit takes 4–8 hours. We start by turning off utilities, draining and removing the old tank, hanging the new wall-mounted unit, and running new water, gas, and condensate lines as needed. Because tankless heaters have specific venting and combustion-air requirements, we install stainless-steel or PVC venting to the outdoors and perform a combustion-analysis test. Finally, we program the temperature set-point, register the warranty, and show you how to operate and descale the unit. All work meets the 2024 International Plumbing Code adopted by the City of Maryville.
Are there incentives for installing an energy-efficient tankless system in Maryville?
Yes. Qualifying ENERGY STAR gas tankless units currently earn a 30 % Federal Energy Efficiency Tax Credit (up to $600). Tennessee Valley Authority (TVA) partners such as Maryville Utilities often run seasonal rebates—typically $100–$300—for replacing an old tank with a high-efficiency on-demand model. Some propane suppliers also offer bill credits when you upgrade. We supply all necessary documentation and guide you through the rebate or tax-credit paperwork to maximize your savings.
What kind of maintenance does a tankless water heater need and do you provide it?
To keep the heat exchanger free of mineral buildup, manufacturers recommend a professional flush with food-grade vinegar or citric-acid solution once a year in Maryville’s moderately hard water. The combustion air screen should be cleaned every 6 months, and the condensate trap inspected. Our plumbing team offers affordable annual maintenance plans that include descaling, gas-pressure checks, vent inspection, and firmware updates. Regular service preserves efficiency, prevents error codes, and keeps your warranty intact.