- HEP Plumbing
- Licensed Pros

Licensed Pros
Licensed Pros | Tankless Water Heater Install | Plumbing | Crossville
Enjoy endless hot water and lower utility bills in Crossville with HEP’s fully licensed, background-checked plumbing pros. Whether you’re replacing a bulky storage tank or outfitting a new build, our team delivers precision craftsmanship, tidy workspaces, and same-day service windows. We pair top brands with honest pricing, so you get a dependable upgrade without the guesswork.
From the first call to the final inspection, you’ll feel the HEP difference. We size your unit for Crossville’s varying temperatures, secure all permits, and walk you through maintenance tips that protect your warranty for years to come. Ready for a worry-free tankless water heater install? Reach out today and let hot water flow the smart way.
FAQs
What are the main advantages of switching to a tankless water heater in Crossville?
Tankless (on-demand) water heaters heat water only when you open a tap, eliminating standby heat loss from a storage tank. In the Cumberland Plateau climate, that typically translates to 20–40 % lower energy use compared with a standard electric tank. You also gain endless hot water, free up 10–16 sq ft of floor space, and enjoy units that last about twice as long (20+ years) as a traditional heater when maintained properly. Because Licensed Pros Plumbing is factory-trained on the leading brands, we’re able to match you with models that qualify for federal tax credits and local TVA energy-efficiency rebates.
How long does a professional tankless water heater installation take?
Most residential change-outs are completed the same day. A straight replacement of a gas or electric tank with a similarly-fueled tankless unit typically runs 4–6 hours, including mounting the unit, rerouting water lines, and testing. If we need to upsize a gas line, add a 240-V circuit, or extend venting through a stone or brick wall, the job can extend to 6–8 hours. You’ll have hot water again before we leave, and we always haul away the old tank at no extra charge.
How do I know what size (flow rate) tankless unit my Crossville home needs?
Sizing is based on simultaneous demand, measured in gallons per minute (GPM), and incoming groundwater temperature. In Crossville, winter groundwater averages 55 °F, so heating to 120 °F requires a 65 °F rise. A family that might run two showers (2.0 GPM each) and a dishwasher (1.5 GPM) at once would need roughly 5.5 GPM at a 65 °F rise. Our licensed plumbers perform a load calculation on-site and recommend either a single whole-house unit (typically 7–9 GPM) or a multi-unit/point-of-use layout if your usage is higher.
Will a tankless water heater really lower my utility bills?
Yes. ENERGY STAR® data show gas tankless models save the average household about $95 per year; larger families save more because a tankless system avoids reheating 40–50 gallons all day. Electric tankless units can cut water-heating costs up to 40 % when paired with time-of-use rates from VEC or Cumberland EMC. Over a 20-year lifespan, that can mean $1,500–$2,500 in net savings compared with a mid-efficiency storage tank, even after factoring in the higher upfront cost.
Will I have to upgrade my gas line or electrical service?
Maybe. Gas tankless units need a ¾-inch supply line and 120 V power for the controls; many older homes have only ½-inch gas branches. Electric tankless units draw 60–120 amps, so you may need additional 240-V breakers or a service-panel upgrade. During your free estimate, our technician measures gas pressure, pipe size, and panel capacity to give you a firm quote. If upgrades are required, our team handles all permitting, code compliance, and inspections with Cumberland County Building & Codes.
What maintenance does a tankless water heater require and how often?
Because Crossville has moderately hard water (about 4–7 grains per gallon), we recommend a vinegar or citric-acid flush once a year to remove mineral scale from the heat exchanger. The process takes about 45 minutes and keeps efficiency high while preserving your warranty. We also clean the inlet filter and check venting, gas pressure, and combustion performance. Licensed Pros Plumbing offers a low-cost annual service plan that includes priority scheduling and discounts on any future repairs.