High-efficiency Units
High-efficiency Units | Tankless Water Heater Install | Plumbing | Johnson City
Imagine stepping into a steamy shower on a frosty Johnson City morning, knowing the hot water will never run out and your energy bills are finally under control. That’s the comfort HEP brings with a professional tankless water heater install—compact, high-efficiency units that heat water on demand, slash standby losses, and free up valuable space in your utility closet. Our local, background-checked plumbers arrive on time, respect your home, and explain every option so you can choose the perfect flow rate and fuel type for your family.
From the first call to the final performance test, we handle permits, removal of your old tank, precision gas or electric hookups, and code-compliant venting. You’ll enjoy endless hot water, lower monthly costs, and one of the industry’s best warranties, all backed by HEP’s 24/7 emergency support. Let us elevate your comfort and efficiency in one smart upgrade—schedule your Johnson City installation today!
FAQs
What are the main advantages of installing a high-efficiency tankless water heater in Johnson City?
Tankless units heat water only when you open a tap, eliminating standby losses common with storage tanks. In Johnson City’s moderate climate, this typically cuts water-heating energy use by 25–40 %. You also gain endless hot water, a unit roughly the size of a suitcase that frees up floor space, and a life span of 20+ years—about double that of most tank heaters. Because hard-water scaling is moderate in our area, tankless systems also maintain efficiency longer than tanks do.
How long does a professional tankless water heater installation usually take?
Most residential replacements are completed in one business day. Our crew first isolates and removes your old tank (1–2 hrs), then mounts the new wall-hung unit, runs new venting, and upgrades gas, electrical, or condensate lines if needed (3–5 hrs). Commissioning and code inspection add another 1–2 hrs. Complex jobs—such as moving the water heater to a new location or upgrading undersized gas lines—may extend the project to a second day.
Will my home’s existing gas or electrical service support a tankless heater?
That depends on the model you choose. Gas tankless units require a ¾-inch gas line and a supply pressure of 4–10 in. wc for natural gas (or 8–14 in. wc for LP). Many homes built after 2000 already meet this. Older Johnson City houses sometimes need a gas line upsizing, which we can quote on site. Electric units need 120–200 A service and two to four 40-50 A breakers; most homes in town have only 150 A or less, so electric models may require a panel upgrade. We evaluate supply lines during our free estimate so you know costs up front.
How do I size a tankless water heater for my family?
Sizing is based on simultaneous hot-water demand (gallons per minute) and the temperature rise required. In Johnson City, incoming water averages 55 °F in winter and 65 °F in summer. To deliver 120 °F water year-round, you need a 60–65 °F rise. A typical family of four running two showers (2 gpm each) and a washing machine (1.5 gpm) at once should choose a unit rated for 6–8 gpm at a 60 °F rise—generally a 180–199 kBtu gas model. We perform a load calculation during our visit and recommend the correct size so you never run out of hot water.
Are there rebates or tax incentives for high-efficiency tankless installations in Johnson City?
Yes. Through 2032, the federal Energy Efficient Home Improvement Credit provides a 30 % tax credit (up to $600) on qualifying ENERGY STAR® tankless units. Atmos Energy customers may qualify for a $200–$300 rebate on 0.90+ UEF models. Tennessee’s TVA EnergyRight program occasionally offers additional incentives for electric-to-gas conversions. We supply all rebate forms and documentation and can apply the rebate as an instant discount if the program allows.
What maintenance does a tankless water heater require?
Unlike tanks, a tankless heater has no large reservoir to corrode, but it does need annual service. We flush the heat exchanger with a food-grade vinegar solution to remove mineral buildup, check the burner or heating elements, inspect the condensate trap, and update firmware. Johnson City’s water measures about 4–6 grains per gallon—moderately hard—so flushing once a year is enough for most homes. Neglecting maintenance can reduce efficiency and void the manufacturer’s 12- to 15-year heat-exchanger warranty, so we offer affordable service plans and automatic reminders.