Tankless Water Heaters
On-demand hot water with a smaller footprint, longer life, and lower energy bills — sized to your peak simultaneous demand, not a guess.
Water Heaters
Hot showers, on demand — sized right and installed right.
Hot water, every time. We install, replace, and service tank and tankless systems sized properly for your home or business.
Same-Day Available
Most calls scheduled today
24/7 Live Dispatch
A real local tech answers
Licensed & Warrantied
Workmanship guaranteed
About this service
Water Heaters in the Niagara Region
A failing water heater is one of those problems you only notice the moment you're already standing in the shower. Ottr Plumr installs, replaces, and services tank and tankless water heaters across the Niagara Region — usually the same day you call, because cold-shower-day is nobody's good day.
We size and spec your unit based on how your household actually uses hot water — bedrooms, bathrooms, laundry habits, dishwasher cycles, simultaneous-fixture demand — not based on whatever's stacked highest at the warehouse. The result: you get hot water when you want it, your gas or hydro bill goes down, and the equipment lasts the full lifespan instead of cycling itself to death.
Tank vs. tankless is the question we get most. The honest answer: it depends. Tankless gives you endless hot water, longer equipment life, and a smaller footprint, but it costs more up front and sometimes requires gas-line and venting upgrades. Tank is cheaper to install, simpler to service, and the right call for a lot of homes — especially if your existing setup works. We walk you through both options with real numbers before you decide.
Every install is permitted, code-compliant, and properly vented (a surprising number of older installs aren't). We pull the permit, coordinate the inspection, and leave you with a system that's safe, efficient, and warrantied — both by the manufacturer and by us in writing.
What we do
Specialties under Water Heaters
Tank Water Heaters
Reliable conventional tanks in gas or electric, professionally installed to code with new shut-offs, expansion tanks, and proper venting.
Repair & Service
Pilot lights, thermocouples, gas valves, thermostats, anode rods, leaks, and pressure-relief valves — diagnosed and repaired without unnecessary upselling.
Same-Day Replacement
Emergency replacement when your tank fails — most jobs done the same day we get the call, with the old unit hauled away.
Recirculation Loops
Hot water at the tap in seconds instead of minutes — added to existing systems or built into new installs.
Annual Maintenance
Tank flush, anode rod inspection, T&P testing, and burner cleaning — extends life by years and keeps efficiency rated.
Help me choose
Tank vs. Tankless Water Heater
Both deliver reliable hot water — the right choice comes down to your household's demand, your budget, and your space. Here's the honest breakdown.
Conventional Tank
Best for: Smaller homes, predictable demand, tighter budgets
Pros
- Lower upfront cost
- Simple, well-understood technology
- Cheaper repairs and parts
- Works during a brief power outage (gas models)
Cons
- Limited hot water — runs out during heavy use
- Standby heat loss adds to energy bills
- Shorter lifespan (8–12 years on average)
- Takes up floor space
Tankless (On-Demand)
Best for: Larger homes, multiple bathrooms, long-term owners
Pros
- Endless hot water on demand
- 20+ year lifespan with maintenance
- Lower energy bills (no standby loss)
- Wall-mounted — frees up floor space
Cons
- Higher upfront cost
- May need gas-line or venting upgrade
- Annual descaling recommended in hard-water areas
- Slightly slower initial hot-water delivery
Still not sure? Call 289-488-1007 — we'll walk through your specific home, budget, and usage in about ten minutes. No pressure, no commitment.
Why Ottr Plumr
Local. Honest. Warrantied.
We earn the call back by doing the job right the first time — and being straight with you about what your home or business actually needs.
- Most replacements completed in a single visit
- Right-sized for your household, not oversold
- Manufacturer-backed warranties
- Permits pulled and code-compliant install
- Old unit hauled away and disposed of properly
- Honest tank vs. tankless conversation, no pressure
Common questions
Water Heaters FAQs
Should I switch from a tank to tankless water heater?
If you have high simultaneous hot-water demand (multiple bathrooms running at once), want to free up floor space, or want lower long-term energy bills, tankless is often worth it. We'll walk you through the upfront cost vs. long-term savings, including any gas-line or venting upgrades, before you decide.
How long does a water heater installation take?
A like-for-like tank swap is usually 2–4 hours. A first-time tankless install or a conversion (different fuel, new gas line, new vent path) typically takes a half to full day depending on the existing setup.
What's the lifespan of a water heater?
Conventional gas or electric tanks last about 8–12 years on average — longer with annual maintenance and an anode rod swap at year 5. Tankless units, properly maintained with annual descaling, can run 20+ years.
Why does my water heater make popping or rumbling noises?
Almost always sediment build-up at the bottom of the tank — common in Niagara because of our hard water. An annual flush usually fixes it; if the noise persists, the heat exchanger may be cracked and replacement is the smart move.
Can you do same-day water heater replacement?
Yes — most standard tank replacements we can do same-day. Call us by mid-morning and you're showering hot that night. Tankless conversions usually need a day or two to source the right unit.
Where we work
Water Heaters across the Niagara Region
Local water heaters in every city — pick yours.
Water Heaters in St. CatharinesWater Heaters in Niagara FallsWater Heaters in WellandWater Heaters in ThoroldWater Heaters in LincolnWater Heaters in GrimsbyWater Heaters in PelhamWater Heaters in Fort ErieWater Heaters in Port ColborneWater Heaters in Niagara-on-the-LakeWater Heaters in West LincolnWater Heaters in Wainfleet
Explore more
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Whole-home plumbing service for Niagara families — drains, faucets, fixtures, leaks, re-pipes, and renovations.
Commercial Plumbing
Dependable service for retail, office, restaurant, and industrial clients. We work around your schedule, not the other way around.
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Stay warm all winter. Furnace, boiler, and radiant heat install, repair, and tune-ups across the Niagara Region.
Sump Pumps
Don't wait for the next storm. Pro-grade sump pumps and battery backups keep your basement dry year-round.
Repairs & Diagnostics
Honest diagnosis. Fair price. We fix what's broken without trying to sell you what isn't.
Drain Cleaning
Slow sinks, gurgling toilets, sewer backups — cleared properly with snaking, hydro-jetting, and camera inspection across Niagara.
Emergency Plumber
24/7 emergency plumbing across Niagara — burst pipes, sewage backups, no hot water, flooding. Real local techs, fast dispatch.
Ready to book water heaters?
Same-day service available across the Niagara Region.