Knoxville, TN · plumbing service
Water Heater Replacement in Knoxville, TN
Heaters in older homes reach end of life. Call to be connected with an independent, licensed plumber who handles water heater replacement in Knoxville; they diagnose the problem and quote the work before starting.
By calling, you agree to be connected with an independent plumbing contractor serving your area. Calls may be recorded for quality and training. The call and referral are free, and you are never obligated to hire.- Licensed local plumbers
- Free call and referral
- You approve the quote first
Common signs
- Water around the tank base
- rusty hot water
- a tank past 10 years
Water Heater Replacement services in Knoxville
- Water Heater ReplacementReplacing a failing or leaking tank heater.
- Water Heater RepairNo hot water, leaking tank, strange noises or uneven temperature.
- Tankless Water HeatersTankless installation, descaling and repair.
- Water Heater MaintenanceFlushing, anode checks and safety-valve testing.
- Gas Line Installation and RepairGas piping for appliances and gas leak repairs.
Problems water heater replacement fixes
- A leaking tank
- A tank past roughly 10 to 12 years with frequent repairs
- Rusty hot water or sediment noise
- Not enough hot water for the household
Why water heater replacement comes up in Knoxville
Heaters in older homes reach end of life.
46% of Knoxville's occupied homes are owner-occupied. If you rent, the water heater is normally the landlord's to repair or replace, so report a leak to them in writing as well as calling for help.
- Typical home built
- 1974
- Homes before 1980
- 57%
- Water hardness
- 5.3 gpg
- moderately hard
- Winter freezes
- Occasional hard freezes
How the work is done
- 1Size the replacementMatch capacity and fuel to the household, or compare tankless.
- 2PermitMany cities require a permit and inspection for water heater replacement.
- 3Remove and installDrain and remove the old tank; install with code-required venting, relief valve piping and, where required, an expansion tank.
- 4Test and explainCheck for leaks and correct temperature, and show where the shutoffs are.
What affects the price
The plumbing company sets the price after seeing the job; ask for it in writing before work starts.
- Tank or tankless, gas or electric
- Capacity
- Code updates such as an expansion tank, venting or a drain pan
- Location and access
- Permit and haul-away
Plumbing work we connect Knoxville homeowners with
Water Heater RepairNo hot water, leaking tank, strange noises or uneven temperature. Tankless Water HeatersTankless installation, descaling and repair. Water Heater MaintenanceFlushing, anode checks and safety-valve testing. Gas Line Installation and RepairGas piping for appliances and gas leak repairs.
Water Heater Replacement in Knoxville: questions
What should I do if I smell gas near my water heater in Knoxville?
Leave the area right away, then call KUB at 865-524-2911 and 911. KUB sends a technician for a free gas leak investigation 24 hours a day.
What temperature does KUB recommend for a water heater in Knoxville?
KUB suggests setting the water heater thermostat to 120 degrees for maximum efficiency, and keeping gas appliances vented outside with no storage crowding the area around them.
Why is water heater replacement a common call in Knoxville?
Heaters in older homes reach end of life.
How old are most homes in Knoxville?
The median home in Knoxville was built in 1974, and 57% of homes were built before 1980 (U.S. Census Bureau, American Community Survey).
How hard is Knoxville's water?
About 5.3 grains per gallon (moderately hard), per Knoxville Utilities Board, Water Quality Report.
Does water heater replacement in Knoxville need a permit?
Usually, when piping changes; the plumber normally pulls it.
When is a leaking water heater an emergency in Knoxville?
A leak from the tank itself won't stop and usually means replacement; turn off the gas or power and the cold-water valve, then call. In Knoxville: heaters in older homes reach end of life.
Who supplies water in Knoxville?
Knoxville Utilities Board. Past the meter, plumbing is the owner's.
Water Heater Replacement near Knoxville
More plumbing services in Knoxville
- Sewer Line Repair in Knoxville, TNSewer Line Repair in Knoxville, TN: older laterals on hilly lots crack and shift.
- Frozen Pipe Repair in Knoxville, TNFrozen Pipe Repair in Knoxville, TN: occasional hard freezes catch crawl-space pipes.
- Emergency Plumbing in Knoxville, TNPlumbing emergency in Knoxville, TN? Who to call (Knoxville Utilities Board or a plumber), what to shut off first, and the emergencies most likely in Knoxville homes.
- All plumbing services in KnoxvilleEvery plumbing service available to Knoxville homes.
Local rules and details for Knoxville
Knoxville facts behind this page
For water heater replacement that changes or replaces piping, Knoxville's plumbing code and permit rules apply (see the source below). Ask the plumber whether your job needs a permit and who pulls it; a licensed plumber normally does.
- The median home in Knoxville was built in 1974. [1]
- About 57% of Knoxville's housing units were built before 1980, the era of galvanized steel supply pipe, cast iron drains and clay sewer laterals. [1]
- Knoxville Utilities Board takes in more than 30 million gallons a day from the Tennessee River and treats it at the Mark B. Whitaker plant; hardness ranges from about 60 to 120 ppm (moderately hard). [2]
- Tennessee's adopted plumbing code is the 2021 International Plumbing Code, and plumbing contractors are licensed by the state Board for Licensing Contractors. [3]
- In its winter safety tips, Knoxville Utilities Board tells customers who notice signs of a natural gas leak, such as a rotten egg smell, hissing sounds or bubbles in a wet area, to leave the area immediately and then call KUB at 865-524-2911 and 911. KUB says it will send a trained technician for a free leak investigation, 24 hours a day, and advises having gas appliances inspected by a qualified technician. [4]
- Knoxville Utilities Board's winter money-saving tips recommend lowering the water heater thermostat to 120 degrees for maximum efficiency, washing full dishwasher and laundry loads on short cycles to save on water heating, and using cold water for laundry when possible. KUB also advises keeping the area around natural gas appliances free of storage and making sure appliances are vented outside to remove carbon monoxide. [4]
Knoxville rules and programs for water heater replacement
- In its winter safety tips, Knoxville Utilities Board tells customers who notice signs of a natural gas leak, such as a rotten egg smell, hissing sounds or bubbles in a wet area, to leave the area immediately and then call KUB at 865-524-2911 and 911. KUB says it will send a trained technician for a free leak investigation, 24 hours a day, and advises having gas appliances inspected by a qualified technician. [4]
- Knoxville Utilities Board's winter money-saving tips recommend lowering the water heater thermostat to 120 degrees for maximum efficiency, washing full dishwasher and laundry loads on short cycles to save on water heating, and using cold water for laundry when possible. KUB also advises keeping the area around natural gas appliances free of storage and making sure appliances are vented outside to remove carbon monoxide. [4]
Other common plumbing calls in Knoxville
- Sewer Line Repair: older laterals on hilly lots crack and shift.
- Frozen Pipe Repair: occasional hard freezes catch crawl-space pipes.
Safety first
Leaking tank: shut its power or gas and the cold-water valve.
Sources (4)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- Knoxville Utilities Board, Water Quality Report · checked 2026-10-01
- Tennessee State Fire Marshal's Office, Currently Adopted Codes · checked 2026-10-01
- Knoxville Utilities Board, KUB Connection November-December 2024 · checked 2026-10-20