Water Heater
WATER HEATER REPAIR & INSTALLATION IN NORTH LOUISIANA
No hot water, leaking tank, or ready to upgrade? We repair, replace, and install tank and tankless water heaters across North Louisiana — flat-rate quote before we start.
4.9 · 4,400+ reviews
Verified Google reviews
4.9★ on Google
4,400+ reviews
24/7 Emergency
60–90 min dispatch
Licensed & insured
LA Master Plumber #1874
North Louisiana
Ruston to Shreveport
Flat-rate pricing
Quoted before we start
Overview
When it's time to fix the water heater vs. replace it
A malfunctioning water heater can bring your whole day to a stop. Whether you have a leaking tank, no hot water, or you're ready to upgrade to an energy-saving tankless system, Mark Johnson & Sons Plumbing has you covered with fast, reliable service across North Louisiana.
We service and install every major brand of tank and tankless water heater. Our technicians help you choose the right size and type for your home, then install it correctly the first time — so you get dependable hot water for years to come.
Why North Louisiana homeowners trust Mark Johnson & Sons
- Tank & tankless repair, replacement, and new installation
- Honest recommendations on repair vs. replacement
- Energy-efficient tankless upgrades that save space and money
- Upfront flat-rate pricing and clean, professional installs
What we service
- Tank water heaters — 40, 50, 75-gallon gas and electric from AO Smith, Bradford White, Rheem, State
- Tankless water heaters — Rinnai, Navien, Noritz — repair, descale, replace
- Recirculation pumps and expansion tanks — required on most replacements
- Water heater flushes — annual sediment flush extends tank life 2–4 years
When to repair vs. replace
If your unit is under 8–10 years old and the repair is minor, repair usually makes sense. Older units with leaks, rust, or repeated problems are often cheaper to replace. We'll give you an honest assessment either way — and tankless water heaters are worth a look for any North Louisiana home that wants endless hot water and 20+ years of lifespan.
What Mark Johnson & Sons does differently
We stock common parts on every truck — thermocouples, elements, gas valves, anode rods, expansion tanks — so most repairs finish the same day. For replacements, we coordinate removal, install, venting upgrade if code requires, permit, and old tank disposal. Every job includes a 10-year parts warranty on new tanks.
Ask about our Classic Membership — annual flush and anode rod check is included, which is the single biggest thing you can do to stretch a water heater's life.
Free quote
Same-day water heater quote
Tell us the tank size, fuel type, and age. We'll come give you a real quote before committing.
4.9★
24/7
Emergency
Free
Quote
Current coupons
View all$400 OFF
Buy a water heater + water softener together
Standard pricing. Must mention at booking.
Expires 12/31/2026
$200 OFF
Tankless water heater install
New equipment only. One offer per household.
Expires 12/31/2026
UP TO $300
Manufacturer rebate on qualifying tankless models
Call for qualifying models and details.
Expires 12/31/2026
Mention coupon when booking. One offer per household.
Warning signs
Signs Your Water Heater Needs Attention
Most water heater failures give 2–6 weeks of warning before they quit. If you're seeing any of these, don't wait for the cold-shower morning.
No hot water, or hot water runs out in under 10 minutes
Water turns lukewarm halfway through a shower
Rust-colored or cloudy hot water out of any tap
Popping, rumbling, or knocking sounds from the tank
Visible water pooling around the base of the tank
Rust or corrosion on the tank exterior, especially near fittings
Pilot light won't stay lit on a gas unit
Tank is over 12 years old (check the sticker)
Higher-than-normal gas or electric bill tied to hot water use
No hot water
Cold shower? We're on the way.
Pilot out, element burned up, tank leaking — water heater emergencies get a licensed tech on-site in 60 to 90 minutes. Part's usually on the truck.
Most repairs
Same day
Across Ruston, Monroe, Shreveport, Bossier City, and North Louisiana.
The Process
How a Water Heater Service Call Goes
On the truck
Professional tools, parts, and diagnostics — every call.
On-phone triage
We ask the age of the unit, the symptom, and whether there's active leaking. If it's leaking at the base, we're already rolling — don't wait.
Diagnostic on-site
Tech tests the elements, thermocouple, gas valve, T&P valve, anode rod, and tank integrity. You get a photo + written diagnosis before a quote.
Flat-rate quote
If it's a repair, you get the part + labor price. If it's a replacement, you see options at 3 price points (standard, high-efficiency, tankless).
Same-day fix in most cases
Common parts ride on the truck, so most repairs wrap the same day. Replacements usually schedule 1–2 days out unless it's emergency leaking.
Permit, haul-off, warranty
On replacements we pull the permit, haul off the old tank, install expansion tank + drain pan where code requires, and register the warranty.
Pricing
Water Heater Cost in North Louisiana
Flat-rate, quoted before we start. Emergency after-hours adds $95–$150 on top.
Water heater diagnostic / service call
Waived if you do the repair or replacement
Standard
$89–$129
Member · save 15%
$76–$110
Thermocouple replacement (gas)
Most common gas water heater repair
Standard
$195–$295
Member · save 15%
$166–$251
Heating element replacement (electric)
Upper or lower element, most common electric repair
Standard
$225–$385
Member · save 15%
$191–$327
Gas control valve replacement
When the pilot won't stay lit and thermocouple is good
Standard
$385–$725
Member · save 15%
$327–$616
Anode rod replacement
Every 5 years extends tank life significantly
Standard
$175–$285
Member · save 15%
$149–$242
Tank flush and service
Annual recommended — removes sediment buildup
Standard
$155–$225
Member · save 15%
$132–$191
40-gal tank water heater install
Removal, new tank, expansion tank, permit, 10-yr warranty
Standard
$1,650–$2,450
Member · save 15%
$1,403–$2,083
50-gal tank water heater install
Most common residential replacement size
Standard
$1,850–$2,850
Member · save 15%
$1,573–$2,423
75-gal tank water heater install
Larger homes, high-demand applications
Standard
$2,450–$3,850
Member · save 15%
$2,083–$3,273
Tankless water heater install
Gas, venting, condensate, permit — high-efficiency
Standard
$3,500–$6,800
Member · save 15%
$2,975–$5,780
Member pricing reflects the Classic Membership 15% repair discount. Service call fees are separate.
Ranges reflect 2026 North Louisiana residential work. Power-vent, direct-vent, and commercial units quoted separately.
Classic Membership
One plan. Whole-home peace of mind.
For $189 a year, members get 15% off every HVAC and plumbing repair, two complete HVAC tune-ups, a free plumbing and drain check-up, and priority scheduling on every call.
- 15% off repairs
- Priority scheduling
- 2 HVAC tune-ups/yr
- After-hours discounts
- $25 savings certificate
- Guaranteed flat-rate
Classic Membership
$189/year
One flat yearly price covers your whole home — everything listed, no per-visit fees, no surprises.
Questions? (318) 319-0220
Cancel anytime · 1-yr min
Compare
Tank vs. Tankless vs. Heat Pump Water Heater
Three ways to get hot water. The right one depends on household size, fuel type, upfront budget, and how long you plan to stay.
| Feature | Tank (gas) | Tankless (gas) | Heat Pump |
|---|---|---|---|
| Upfront install | $1,650 – $2,850 | $3,500 – $6,800 | $3,200 – $4,800 |
| Lifespan | 8 to 12 years typical | 15 to 20 years | 10 to 15 years |
| Hot water supply | 40–75 gal then recovery | Endless, flow-limited | 50–80 gal then recovery |
| Energy cost (monthly) | $35 – $55 | $22 – $38 (25–30% less) | $18 – $32 (50% less) |
| Best for | Budget, simple install, fast repairs | Large family, low gas bill, 10+ yr plan | Mild climate, all-electric home |
| Downsides | Runs out, limited efficiency | Higher upfront, needs descale | Needs warm space, noisy fan |
FAQ
Water Heater FAQs
If your unit is under 8–10 years old and the repair is minor, repair usually makes sense. Older units with leaks, rust, or repeated problems are often cheaper to replace. We'll give you an honest assessment either way.
Related services
Related Plumbing Services
These come up often on the same call as water heater work.
Tankless Water Heater
Endless hot water, 25–30% less gas, 15–20 year lifespan.
Water Softener Install
The single biggest upgrade for water heater longevity — protects against hard-water buildup.
Burst Pipe Repair
Tank blew, flooded basement? Fix and dry out in one trip.
24/7 Emergency Plumber
Actively leaking tank at 2am? 60–90 min dispatch.
Available Around the Clock
Emergency?
We answer 24/7.
Burst pipe, water heater out, sewer backup? Real plumbers pick up — no answering machines. Mark Johnson & Sons Plumbing serves North Louisiana any time, day or night.
LA Master Plumbing #1874 · Backflow Cert #28131 · Master Natural Gas Fitter #LMNGF9062 · State Contractors #35794