- HEP Plumbing
- Tankless Water Heater Install

Tankless Water Heater Install
Tankless Water Heater Install | Plumbing | Farragut
Upgrade to endless, energy-smart hot water with HEP’s licensed plumbers in Farragut. We specialize in cutting-edge tankless water heater installations that free up space, slash standby energy loss, and deliver a constant stream of perfectly heated water the moment you turn the tap. From helping you choose the ideal high-efficiency unit to handling gas line sizing, venting, and code-compliant setup, our crew makes the process effortless—often completing the swap in a single day. You’ll see lower utility bills, faster recovery times, and the peace of mind that comes from factory-trained technicians who back their work with industry-leading warranties.
Whether you’re replacing a bulky, aging tank or building your dream home near Turkey Creek, HEP keeps your comfort flowing. We arrive on time, protect your floors, haul away the old equipment, and show you how to maximize every smart feature before we leave. Plus, with 24/7 emergency support and straightforward, upfront pricing, you’ll never be left in the cold—or the dark—about your hot water again.
What our customers say
Why Farragut Homeowners Choose Tankless Water Heaters
Tank-style water heaters have served East Tennessee households for decades, yet a growing number of Farragut residents are turning to tankless technology for reliable, energy-smart hot water. The shift is driven by a blend of modern lifestyles, higher efficiency expectations, and the unique plumbing considerations found in many West Knox County homes.
Endless Hot Water in a Compact Package
With a properly sized tankless system, showers, laundry, and dishwashing can run back-to-back without a cold-water surprise. Because the unit heats water only as it passes through a heat exchanger, no storage tank is required, freeing up valuable floor space in tight utility rooms, garages, or crawl spaces. This on-demand design aligns perfectly with the high-demand schedules of busy Farragut families.
Lower Energy Consumption
Traditional tanks continuously cycle to keep 40–80 gallons at temperature. In contrast, tankless units fire up only when a tap opens, significantly reducing standby heat loss. For homeowners intent on cutting utility bills and shrinking their carbon footprint, this reduction in wasted energy is a compelling advantage.
Improved System Longevity
Hard water and thermal cycling strain tank-type systems. While Farragut’s municipal supply is relatively stable, mineral content still builds on submerged heating elements over time. Tankless units avoid long-term immersion, and when combined with annual maintenance performed by trained HEP technicians, many models deliver operational lifespans well beyond the 10-to-15-year average of conventional heaters.
Flexible Installation Locations
Because of their wall-mounted design, tankless units can be installed in a variety of venues: inside a conditioned closet, on an exterior wall, or even tucked between wall studs in a retrofit scenario. This flexibility is a game-changer for remodels and custom builds across neighborhoods such as Fox Run, Inverness, and Sweet Briar.
Understanding How Tankless Technology Works
On-Demand Heating Explained
When a hot-water fixture opens, a flow sensor in the tankless unit signals a control board to ignite the burner (or activate heating elements on electric models). Water travels through a heat exchanger and exits at a consistent, user-selected temperature. Once the tap closes, the flame or element shuts off and the system returns to standby mode.
Key Components
- Stainless-steel or copper heat exchanger for rapid thermal transfer
- Modulating gas valve or variable-output electric elements to match demand
- Digital control board governing ignition, combustion, and safety sensors
- Built-in condensate trap on high-efficiency condensing units
- Integrated recirculation pump on select premium models for instant hot water loops
Signs It’s Time to Replace a Conventional Water Heater
Even well-maintained tanks eventually fail. Typical indicators include:
- Rusty or discolored hot water at fixtures
- Rumbling or popping sounds from sediment buildup
- Visible leaks near the base of the tank
- Hot-water shortages during peak usage
- Energy bills creeping upward without a parallel change in consumption
When homeowners notice one or more of these symptoms, a proactive switch to a tankless system installed by HEP prevents unavoidable emergency shutdowns and water damage.
Benefits of Professional Tankless Water Heater Installation by HEP
Choosing the right unit is only half the battle; expert installation is essential for performance, efficiency, and safety in Farragut’s varied housing stock.
Proper Sizing and Gas Line Configuration
Tankless sizing considers simultaneous fixture usage, flow rates, and incoming water temperatures that fluctuate with East Tennessee’s seasons. HEP plumbers perform detailed load calculations to ensure the selected model meets or exceeds peak household demand. When necessary, technicians upsize gas lines to deliver the higher BTU input tankless burners require, preventing flame failure and ensuring full output during cold winter mornings.
Venting Expertise
Incorrect venting can lead to condensate leakage, exhaust backdrafting, or premature component failure. HEP crews follow manufacturer specs and local mechanical codes, installing stainless or polypropylene venting with carefully calculated lengths, slopes, and terminations to optimize combustion safety and efficiency.
Code Compliance Assurance
Farragut adheres to stringent building and plumbing codes. HEP’s licensed plumbers obtain required permits, execute pressure tests, and coordinate city or county inspections. This process safeguards homeowners from potential legal or insurance complications stemming from unpermitted work.
The HEP Tankless Installation Process in Farragut
Initial Inspection and Load Calculation
Technicians begin with a walkthrough, measuring fixture flow rates and evaluating existing gas supply, electrical service, and vent pathways. These data points inform model selection and price estimates for ancillary upgrades.
Removal and Disposal of Existing Tank
Old tanks are drained, disconnected, and carefully removed to avoid spillage that can damage hardwood floors or finished basements common in Farragut homes. HEP recycles scrap metal whenever possible to minimize landfill waste.
Mounting the New Unit
A sturdy backer board or bracket is anchored to structural framing. Wall clearances, service access, and proximity to combustion air sources are verified before the tankless chassis is secured in place.
Gas and Water Line Upgrades
- Dedicated gas piping sized per BTU load
- Full-port isolation valves for future maintenance
- Dielectric unions to prevent galvanic corrosion
- Pressure-relief valve discharge line positioned per code
Electrical and Condensate Connections
Condensing gas models require a 120-volt receptacle and a condensate neutralizer kit. HEP electricians provide GFCI-protected outlets and route condensate to approved drains, ensuring acidic water does not damage concrete or landscaping.
System Commissioning and Testing
Using digital combustion analyzers and manometers, plumbers fine-tune gas pressure, verify temperature rise, and confirm vent draft. Flow sensors are calibrated, error codes cleared, and firmware updated when applicable.
Customer Orientation and Maintenance Tips
Before departure, the crew explains control-panel navigation, filter cleaning, and seasonal freeze-protection steps to homeowners, empowering them to maximize equipment life.
Common Challenges in Farragut Homes and HEP Solutions
Limited Mechanical Space
Many houses in Saddle Ridge, Vista, and Sheffield share compact utility rooms that barely accommodate existing HVAC and water equipment. HEP’s wall-mount approach frees floor real estate, and remote controllers allow units to be placed out of sight while still providing user access.
Hard Water Mineral Scale
While Knox County’s hardness levels are moderate, heat exchangers still face scale accumulation. HEP offers inline scale-inhibition cartridges or full water-softener installations to preserve efficiency.
High-Demand Households
Large families or luxury homes with body-spray showers and soaking tubs can exceed the capacity of a single residential unit. HEP employs parallel stacking of multiple tankless heaters, balanced through manifold piping, to deliver robust flow rates without temperature dips.
Energy Efficiency and Environmental Impact in the Knoxville Metro
Tankless systems typically achieve energy factors ranging from 0.82 to 0.97, compared to 0.60 for many aging storage tanks. Over a 12-month cycle, this translates to significant natural-gas savings. Reduced fuel consumption lowers greenhouse-gas emissions, aligning with Tennessee Valley Authority initiatives that encourage efficient home upgrades across the region.
Additional eco-benefits include:
- Less material waste because smaller heat exchangers require fewer raw resources
- Fewer landfill contributions owing to extended service life
- Opportunity to integrate renewable energy, such as pairing with rooftop solar and an electric backup tankless unit
Maintenance Essentials After Installation
A tankless water heater is not a “set-and-forget” appliance. Regular upkeep protects both performance and warranty coverage.
Annual Descaling
HEP plumbers circulate a mild vinegar solution through the heat exchanger using a submersible pump and hoses, dissolving mineral deposits that impede heat transfer and reduce efficiency.
Filter Maintenance
Most units feature an inlet screen filter that captures debris from municipal or well water. Homeowners can twist, rinse, and reinstall the screen every few months to guard against blockages.
Software Updates
Digital controllers sometimes receive firmware upgrades to refine ignition sequences or enhance freeze-protection routines. HEP keeps track of manufacturer advisories and installs updates during service visits.
Enhancing Your Plumbing Ecosystem with Complementary Upgrades
Recirculation Pumps
Farragut homes with sprawling layouts often experience long waits for hot water at distant fixtures. A dedicated or integrated recirculation loop, installed by HEP, pushes cooled water back to the heater so hot water arrives almost instantly, curtailing wasted gallons down the drain.
Water Softening
Installing a whole-house water softener upstream of the tankless unit prevents mineral accumulation and also extends the life of dishwashers, washing machines, and faucets throughout the home.
Smart Home Integration
Wi-Fi-enabled tankless models pair with mobile apps for temperature adjustment, usage monitoring, and vacation modes. HEP electricians set up secure connections so homeowners can supervise energy consumption from anywhere.
Safety Standards and Building Codes Guiding Tankless Water Heater Installs in Farragut
- International Residential Code (IRC) section G2406 governing combustion air openings
- National Fuel Gas Code (NFPA 54) requirements for gas line sizing and leak testing
- ASHRAE 62.2 ventilation standards covering indoor air quality
- Tennessee State Plumbing Code provisions for temperature and pressure relief
- EPA guidelines for condensate disposal to protect groundwater
HEP’s familiarity with these standards ensures every install meets or exceeds regulatory expectations, preventing costly rework or safety hazards.
Myths About Tankless Systems Debunked by HEP Technicians
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Myth: “Tankless heaters deliver instant hot water.”
Reality: Water still travels through piping; a recirculation loop is needed for true instant delivery. -
Myth: “They can’t handle simultaneous showers.”
Reality: Properly sized or manifolded systems comfortably supply multiple fixtures. -
Myth: “Maintenance isn’t necessary.”
Reality: Descaling and filter cleaning are vital for efficiency and warranty validity. -
Myth: “Electric models cost less to run.”
Reality: In areas where electric rates exceed natural-gas rates, operating costs may be higher despite lower installation complexity.
Key Features to Look for When Selecting a Tankless Model
Flow Rate
Measured in gallons per minute (GPM), flow rate dictates how many fixtures can run concurrently. Typical Farragut households find 7–10 GPM adequate, while luxury builds might need 11–15 GPM or multiple units.
Fuel Type
- Natural gas: Most prevalent in Farragut, offers high BTU output
- Propane: Suitable for homes without municipal gas service
- Electric: Ideal for smaller dwellings or when venting is impractical
Temperature Rise
Incoming winter water temperatures dip into the 40s °F across West Knox County. A unit capable of a 60 °F rise at the target flow rate is essential to deliver 100-plus-degree water on frigid mornings.
Modulation Range
A wide modulation ratio allows the burner to adjust from low-flow hand-washing to high-volume tub filling without temperature fluctuations.
Built-In Recirc Capability
Units featuring an internal pump simplify installation of demand or timer-based recirculation loops.
What to Expect in Terms of Longevity and Warranty
Gas-fired tankless heaters regularly exceed 20 years of service when maintained. Manufacturer warranties typically cover heat exchangers for 10–15 years and parts for 5–7 years. HEP’s installation practices, including isolation valves and service ports, facilitate hassle-free maintenance that keeps warranties intact.
Neighborhoods in Farragut Where HEP Commonly Installs Tankless Units
- Fox Den
- Brixworth
- Rockwell Farm
- Bridgewater
- Winston Manor
- Sheffield
- Saddle Ridge
- Sweet Briar
- Shiloh
- Cool Springs
Each enclave presents distinct plumbing architectures, from slab-on-grade ranches to multistory brick estates. HEP tailors installation approaches to fit space constraints, fuel availability, and homeowner preferences, ensuring optimized performance across Farragut’s varied housing landscape.