Water Heater Replacement in Knoxville, TN
Same-day replacement service. All brands and fuel types. Knox County permit included. We stock common unit sizes — no waiting on an order.
- ✓ Same-day service available
- ✓ Free quotes — firm pricing, no surprises
- ✓ Knox County permit always included
- ✓ Old unit haul-away included
- ✓ Gas, electric, high-efficiency, tankless
Water Heater Types We Replace in Knoxville
Gas Water Heaters
Natural gas and propane tank models. Faster recovery than electric — the right choice for high-demand households on KUB's gas distribution. 40, 50, and 75-gallon sizes in stock.
Gas water heater guide →Electric Water Heaters
Standard and high-efficiency electric models. Good option for homes without gas service. Available in 30, 40, and 50-gallon sizes for Knoxville homes of all sizes.
Electric water heater guide →High-Efficiency Tanks
50–80 gallon high-efficiency models. Better energy ratings, longer lifespan, and reduced monthly KUB utility costs compared to standard tanks.
Compare with tankless →What to Expect During Replacement
Free Quote
Call us with your current unit's age, size, and fuel type. We'll give you a firm price over the phone for standard replacements — no in-person visit required to get a number.
Same-Day Scheduling
We carry 40 and 50-gallon gas and electric units in inventory. For most Knoxville area homes, we can be there the same day you call — often within a few hours.
Installation (2–3 Hours)
We drain and disconnect the old unit, install the new one, connect all supply lines, fill and pressure test, pull the Knox County permit, and verify everything is operating correctly before we leave.
Haul-Away & Cleanup
We take the old water heater with us. No extra fee. No unit left on your curb. The space looks the same as when we arrived — just with a new water heater in it.
Knox County Hard Water Note
Knoxville's KUB water tests at 5.3 grains per gallon (91 mg/L) — moderately hard and enough to reduce water heater lifespan by 1–2 years versus the national average. If your unit is over 10 years old, replacement now is almost always smarter than waiting for failure. Learn more about Knox County hard water →
Knoxville Replacement Cost (Fully Installed)
| Unit Type | Installed Price |
|---|---|
| 40–50 Gal Gas Tank | $900 – $1,600 |
| 40–50 Gal Electric Tank | $900 – $1,500 |
| High-Efficiency Gas (50–75 Gal) | $1,400 – $2,500 |
| Tankless Gas (Whole-Home) | $1,800 – $3,500 |
All prices include Knox County permit, labor, and haul-away. Full pricing guide →
Related Services
Water Heater Replacement Service Areas
Knoxville Water Heater Replacement FAQ
How long does water heater replacement take in Knoxville?
A standard tank water heater replacement in Knoxville takes 2–3 hours from start to finish. That includes draining the old unit, disconnecting gas or electrical, installing the new unit, connecting supply lines, filling and pressure testing, and cleanup. We bring common unit sizes in inventory so there's no waiting on a parts order.
What size water heater do I need for my Knoxville home?
For most Knoxville homes: 1–2 people use a 30–40 gallon tank; 3–4 people use a 40–50 gallon tank; 5+ people need a 50–80 gallon tank or a tankless system. Knox County's hard water means you also want to account for some efficiency loss from sediment — sizing up one step is often worth it.
Should I replace or repair my water heater in Knoxville?
If your water heater is under 6 years old with a single failed component (thermostat, heating element, pilot assembly), repair is usually cost-effective. If it's over 10 years old — which in Knox County's moderately hard water means it's likely near end of life — replacement is almost always the smarter investment. We'll give you an honest assessment either way.
Does Knox County require a permit to replace a water heater?
Yes. Knox County requires a permit for water heater replacement. We handle and include the permit in our quoted price. Unpermitted installations can void homeowner's insurance and create problems when selling your home.
Do you haul away my old water heater?
Yes. Old unit haul-away and disposal is included in every job — no extra fee, no leaving the old unit in your garage.
Ready to Replace Your Water Heater?
Free quote. Same-day service. Knox County permit always included.
Call (888) 433-5685