- HEP Plumbing
- High-efficiency Units

High-efficiency Units
High-efficiency Units | Tankless Water Heater Install | Plumbing | Elizabethton
Say goodbye to lukewarm showers and sky-high utility bills—HEP’s high-efficiency units bring endless hot water to Elizabethton homes with a professional tankless water heater install. Our licensed plumbers replace bulky, outdated tanks with compact, on-demand systems that only heat water when you need it, slashing energy waste and freeing up valuable space. Whether you’re upgrading during a remodel or racing to swap out a failing heater, we arrive on time with top-tier brands, precision tools, and a promise to leave your home cleaner than we found it.
From the first temperature check to the final leak test, we tailor every installation to your household’s exact flow rate and fuel source, ensuring steady, reliable performance for years to come. Enjoy quick turnarounds, upfront pricing, and 24/7 support backed by decades of East Tennessee know-how. Ready to elevate your comfort while lowering your costs? Schedule your HEP tankless water heater install today and feel the difference every morning.
FAQs
What makes a tankless water heater a “high-efficiency” unit, and how does that benefit Elizabethton homeowners?
High-efficiency tankless water heaters use advanced heat exchangers and electronic ignition to achieve Energy Factors (EF) or Uniform Energy Factors (UEF) of 0.90–0.99, meaning up to 99 % of the fuel is converted to hot water. For Elizabethton residents, this translates into lower natural-gas or electric bills, reduced standby heat loss because there is no storage tank, and a smaller carbon footprint—important in a region that values both savings and sustainability.
How much does a professional tankless water heater installation typically cost in Elizabethton?
Pricing varies with capacity, fuel type, venting requirements, and any needed gas or electrical upgrades, but most complete installations range from $2,800 to $4,500. This includes the unit, stainless-steel venting or Category III/IV PVC, isolation valves, local permits, and labor. Converting from a tank to tankless may also require upsizing the gas line to ¾ inch, adding $250–$600. We provide a no-obligation in-home estimate so you know the exact figure before work begins.
Will a tankless water heater supply enough hot water for my family?
Yes, when properly sized. We calculate the required flow rate (gallons per minute) based on how many fixtures might run simultaneously—showers, dishwasher, washer—along with Elizabethton’s average groundwater temperature of about 55 °F. A model that delivers roughly 7–9 GPM at a 70 °F temperature rise comfortably handles most four-bedroom homes. Multiple units or a cascading setup are options for very large households.
How long does installation take, and will my hot water be off the whole time?
A straightforward replacement of a gas tank with a gas tankless unit usually takes one working day (6–8 hours). More complex jobs—such as relocating the water heater, upgrading the gas line, or installing electrical circuits for an electric unit—can extend into a second day. We schedule work to minimize downtime; your hot water is normally restored by the end of day one, even on larger projects.
What maintenance is required to keep a tankless water heater running efficiently?
Manufacturers recommend a yearly flush with food-grade white vinegar or a citric-acid solution to dissolve mineral scale, especially important in the moderately hard water common in Carter County. We include an isolation-valve kit with every install, making DIY or professional descaling simple. A quick air-filter cleaning (for gas models) and visual inspection of venting and condensate lines should also be performed annually.
Are there rebates or tax incentives for installing a high-efficiency tankless unit in Tennessee?
Yes. Many ENERGY STAR certified tankless water heaters qualify for a $300 federal tax credit under the Inflation Reduction Act through 2032. Local electric co-ops and natural-gas utilities occasionally offer $100–$250 rebates. We help customers file all rebate paperwork and provide the AHRI certificate needed for tax documentation, reducing the overall cost of upgrading to high-efficiency hot water in Elizabethton.