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Mark Johnson & Sons Plumbing technician servicing a residential water heater in a North Louisiana home

Water Heater

WATER HEATER REPAIR & INSTALLATION IN RUSTON & MONROE

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.

(318) 319-0220

4.9 · 3,569 reviews (2 profiles)

Verified Google reviews

24/7 emergency responseLicensed & insuredServing North Louisiana since 1997
  • 4.9★ on Google

    3,569 reviews · 2 profiles

  • 24/7 Emergency

    Call for current availability

  • Licensed & insured

    LA Master Plumber #1874

  • North Louisiana

    Ruston to Monroe

  • Flat-rate pricing

    Quoted before we start

Reviewed by Mark Johnson & Sons' LA-licensed master plumber (#1874) Last updated June 2026

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 service savings agreement plans — annual flush and anode rod check is included, which is the single biggest thing you can do to stretch a water heater's life.

Licensed Louisiana contractorOwn trucks, own crewsFlat-rate, quoted upfront

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.

Or call now — (318) 319-0220

4.9★

Google

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

Mark Johnson & Sons Plumbing truck at a North Louisiana home during an emergency water heater call

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.

(318) 319-0220

Most repairs

Same day

Across Ruston, Monroe, West Monroe, and North Louisiana.

The Process

How a Water Heater Service Call Goes

Mark Johnson & Sons Plumbing technician draining a residential water heater in a North Louisiana home

On the truck

Professional tools, parts, and diagnostics — every call.

  1. 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.

  2. 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.

  3. 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).

  4. 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.

  5. 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

How We Price Water Heater Work

Flat-rate, quoted before we start, whether it's a repair or a full replacement. An after-hours surcharge applies on nights, weekends, and holidays.

Service members save 15%Service Savings Agreement Plans · from $189/yr

Flat rate, quoted before we start

You get the full price for the job up front — not an hourly meter you watch climb. You approve it before a tool comes out of the truck.

The quote is the price

It doesn't move once work begins. If something unexpected turns up behind a wall or under a slab, we stop and talk it through with you before going further.

Service members save 15% on every repair

Service savings agreements start at $189 a year and take 15% off all plumbing, heating, and cooling repairs, with priority scheduling on every call. The Premium Service Savings Agreement Plan adds same-day service and drops after-hours charges entirely.

Financing available

Bigger jobs — a system replacement, a repipe, a sewer line — can be financed through GoodLeap. Apply online in a few minutes.

Every job is priced for your home and what it actually needs — tell us what's going on and we'll get you a firm number, free and with no obligation.

Service Savings Agreement Plans

Two plans. Whole-home peace of mind.

From $189 a year, service members get 15% off every plumbing, heating, and cooling 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

Service Savings Agreement Plan

$189/year

Everything it takes to keep the house maintained and your repairs discounted.

Each additional HVAC unit is $89/year

Most complete

Premium Service Savings Agreement Plan

$389/year

Everything in the Service Savings Agreement Plan, plus no after-hours charges, no travel fees, and same-day service.

Each additional HVAC unit is $89/year

Questions? (318) 319-0220

1-year term · does not auto-renew

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.

FeatureTank (gas)Tankless (gas)Heat Pump
Lifespan8 to 12 years typical15 to 20 years10 to 15 years
Hot water supply40–75 gal then recoveryEndless, flow-limited50–80 gal then recovery
Relative energy useBaseline25–30% less50% less
Best forBudget, simple install, fast repairsLarge family, low gas bill, 10+ yr planMild climate, all-electric home
DownsidesRuns out, limited efficiencyHigher upfront, needs descaleNeeds warm space, noisy fan

FAQ

Water Heater FAQs

My water heater is leaking at night. Can it wait until morning?

If water is actively escaping from the tank or its connections, do not wait. If it is safe to reach, close the cold-water supply valve above the heater and call us. If that does not stop the water, use the home's main shutoff. Stay away from wet electrical equipment, and leave the home and call the gas utility if you smell gas. If you only see a small amount of water at the relief pipe or drain pan, call and describe it so we can help determine the urgency.

Should I repair or replace my water heater?

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.

Are tankless water heaters worth it?

For many North Louisiana homes, yes. Tankless units provide endless hot water on demand, take up less space, and last longer than traditional tanks — often 20+ years with proper maintenance.

How much does a new water heater cost installed in North Louisiana?

A standard 50-gallon tank water heater is quoted flat-rate and includes removal of the old unit, the new tank, expansion tank, permit, venting upgrades if code requires, and a 10-year parts warranty. A 40-gallon costs less and a 75-gallon more, by capacity. Tankless is a bigger jump.

How long should a water heater last?

8 to 12 years is a realistic range for a standard tank. Annual flushing and anode rod replacement every 5 years can stretch that to 15 years — the #1 reason our service savings agreement pays for itself on older tanks.

Tank vs. tankless — which should I get?

Tank if you want simple, cheap upfront, and fast repairs. Tankless if you have a larger household, want to cut gas usage 25–30%, and plan to stay in the house 10+ years for the payback. For most 3–4 person North Louisiana homes, a 50-gallon tank is the sweet spot.

My water heater is making loud popping noises — dangerous?

Not immediately dangerous, but it's a clear sign of sediment buildup. Minerals settle at the bottom of the tank, the burner heats them, they pop and rumble as they flash-boil. A flush usually solves it for a few years. Ignored long-term, sediment insulates the burner and shortens tank life.

Can I replace a water heater myself?

Louisiana requires a permit and licensed plumber for water heater replacement — it involves gas (or electric), venting, and expansion tank requirements under current code. DIY gets flagged on home sale inspections and fails homeowner insurance claims if something goes wrong.

Do you offer a water heater maintenance plan?

Yes. Service Savings Agreement Plan ($189/year) includes an annual flush and anode rod check as part of the home plumbing inspection. An à-la-carte flush plus rod replacement costs more than the service savings agreement itself, so for anyone with a tank 5+ years old it pays for itself on maintenance alone.

How fast can you get here for no hot water?

Same-day is standard during business hours. Actively leaking tank or no hot water gets 60 to 90 minute emergency dispatch, 24/7. An after-hours surcharge applies.

Do you take the old water heater?

Yes. Removal, disposal, and recycling of the old unit is included in every replacement quote. You don't need to arrange anything — we load it and go.

Do you pull permits for water heater replacement?

Yes. Ruston, Monroe, West Monroe, and surrounding Louisiana cities require a permit on water heater replacement. We pull it, schedule the inspection, and bake the fee into the flat-rate quote.

Can I put a tankless where a tank used to go?

Usually yes — with an upgrade. Tankless needs a larger gas line (3/4" minimum, sometimes 1"), often a higher-BTU gas meter, condensate drainage for condensing units, and wall-vented exhaust. The conversion is quoted all-in. We handle everything in-house.

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.

(318) 319-0220

LA Master Plumbing #1874 · Backflow Cert #28131 · Master Natural Gas Fitter #LMNGF9062 · State Contractors #35794

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