- HEP Plumbing
- Energy Costs

Energy Costs
Energy Costs | Tankless Water Heater Install | Plumbing | Crossville
Enjoy endless hot water while trimming utility bills with HEP’s Energy Cost Plumbing team in Crossville. Our licensed technicians replace bulky, outdated tanks with sleek, on-demand units that heat water only when you need it, saving space, energy, and money. From first consultation to final cleanup, we handle permits, gas or electric hookups, and code compliance, so you can relax and look forward to reliable comfort every time you turn on the tap.
Ready to future-proof your home? With a professional tankless water heater install, you’ll experience faster hot-water delivery, lower maintenance needs, and a system that can last twice as long as a conventional heater. Call HEP today to schedule your free estimate and discover why so many Crossville neighbors trust us for efficient, courteous service that keeps costs—and water—flowing exactly where they should.
FAQs
How much can I expect to save on energy bills by switching to a tankless water heater in Crossville?
Most homes in Crossville that replace a standard 40- or 50-gallon storage heater with an ENERGY STAR®-rated tankless unit report 20–35 % lower water-heating costs. With local electricity averaging about 11¢ per kWh and natural gas around $1.10 per therm, that translates to roughly $90–$140 in annual savings for an average four-person household that uses 45–50 gallons of hot water per day.
Are electric or gas tankless water heaters more cost-effective in our area?
Natural-gas tankless models generally offer the lowest lifetime cost in Crossville because gas rates are stable and the units produce hot water more efficiently than electric models (EF 0.93–0.97 vs. 0.82–0.90). However, if your home does not already have a gas line, the cost of running one can offset the long-term savings. Homes on all-electric service, or with low hot-water demand (fewer than 25 gallons per day), may find a high-efficiency electric tankless unit the better value.
Does the Crossville Utility District offer any rebates or incentives for tankless installations?
Yes. The Crossville Utility District (CUD) periodically partners with the Tennessee Valley Authority on the EnergyRight® program, providing rebates of $100–$300 for qualifying ENERGY STAR® gas or electric tankless water heaters. Incentive funding changes each fiscal year, so our office always confirms availability and handles the paperwork for you before scheduling the installation.
What size tankless unit do I need to handle my household’s hot-water demand?
Sizing is based on peak flow rate (gallons per minute) and temperature rise. In Crossville, incoming water is roughly 55 °F in winter and 62 °F in summer. A family of four running two showers and a dishwasher simultaneously needs about 5.5–6 GPM at a 65 °F rise. That points to a 160,000 BTU gas unit or a 27 kW electric unit. We perform a free in-home evaluation to calculate your exact peak demand and recommend the most efficient model.
How long does a professional tankless installation take and will it disrupt my plumbing?
A straightforward replacement of a gas storage heater with a gas tankless unit typically takes 5–7 hours: 1 hour to disconnect, 3 hours for venting and gas line adjustments, and 1-2 hours for mounting, plumbing, and commissioning. Electric-to-tankless conversions can take 6–10 hours if a sub-panel upgrade is required. Water service is usually off for less than 2 hours, and we restore hot water the same day.
What maintenance is required to keep a tankless water heater running efficiently and how much does it cost?
Crossville’s water is moderately hard (4–6 grains per gallon), so mineral scale will build up over time. Manufacturers recommend a vinegar or citric-acid flush once a year (twice if you have very high usage). Our flush and inspection service costs $129 and takes about 45 minutes. Regular maintenance can extend the heat exchanger’s life to 20+ years and preserve energy savings, whereas neglected units may lose 10-15 % efficiency within five years.