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TANKLESS WATER HEATER - INSTALLATION & REPAIR IN THE GTA

Tankless Water Heater Installation & Repair in Vaughan — All Brands, Licensed

Endless hot water, lower energy bills, and a unit that lasts 20+ years. Aviv Plumbing installs and services all major tankless water heater brands across Vaughan, Toronto, and the GTA.

REQUEST SERVICE

A tankless water heater heats water on demand — there’s no storage tank to run out, no standby heat loss, and no large tank taking up space in your mechanical room. For GTA homeowners looking to upgrade from an aging tank unit, a tankless system offers genuine long-term benefits: energy savings of 15 to 30 percent over conventional tanks, unlimited hot water, and a service life of 20 years or more with proper maintenance.

Aviv Plumbing installs and services tankless water heaters for homes and businesses across Vaughan, Toronto, and the Greater Toronto Area. We work with all major brands including Navien, Rinnai, Noritz, and others — and we handle the full installation including gas line work, venting, and condensate drainage where applicable.

Whether you’re replacing a failed tank unit or making a planned upgrade to tankless, Aviv Plumbing provides honest guidance on whether tankless is the right choice for your home, and installs it correctly if it is.

WHEN TO CALL

  • Your current tank water heater is at or near end of life — typically 10-12 years old
  • You're running out of hot water with your current tank size
  • You want to reduce energy consumption from water heating
  • You're renovating and want to free up mechanical room space
  • You're building new and want to specify a high-efficiency system
  • Your current tankless unit is displaying error codes or performing inconsistently

WHAT WE DO

  • Gas tankless water heater installation — Navien, Rinnai, Noritz, and other brands
  • Electric tankless installation for point-of-use applications
  • Tankless unit repair — error code diagnosis, heat exchanger service, descaling
  • Annual maintenance — scale flushing, filter cleaning, combustion check
  • Gas line assessment and upgrade where required for tankless demand
  • Concentric or two-pipe venting installation
  • Condensate drain line installation for condensing models
  • Unit selection guidance — sizing for your home's demand and gas supply

HOW IT WORKS

Step 1 — Site Assessment and Sizing: We assess your home’s hot water demand, your current gas supply capacity, and the best location for the unit. Tankless units require more gas flow than tank heaters — we verify your supply line can support it.

Step 2 — Unit Selection: We recommend the right unit for your home’s size and demand. Undersizing a tankless unit is the most common installation mistake — we size correctly.

Step 3 — Full Installation: We handle everything: unit mounting, gas connection, venting, condensate drain, and cold and hot water connections. A permit is typically required and we coordinate it.

Step 4 — Commissioning and Maintenance Briefing: We commission the unit, confirm it’s operating correctly at the set temperature, and walk you through annual maintenance requirements — particularly descaling in GTA’s hard water environment.

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WHY AVIV?

Correct Sizing — The Most Important Factor

An undersized tankless unit will not deliver adequate hot water under simultaneous demand. We size units correctly for your home’s actual needs — not just the minimum spec.

Full-Service Installation

Tankless installation is more complex than a tank replacement. Gas line assessment, new venting, condensate drainage — we handle all of it in a single visit.

Licensed and Code-Compliant

Tankless installation involves gas connections and venting that must meet Ontario Plumbing Code and TSSA requirements. Our licensed plumbers ensure every installation is safe and compliant.

All Major Brands

We install and service Navien, Rinnai, Noritz, and other brands. We carry common parts and can service any unit we install.

SERVICE AREA

Aviv Plumbing is always ready to respond to your emergency calls

  • Greater Toronto Area (GTA)
  • Vaughan
  • Toronto
  • North York
  • Etobicoke
  • Scarborough
  • Richmond Hill
  • Markham
  • Concord
  • East York
  • Schomberg
  • Stouffville
  • Caledon
  • Forest Hill
  • Moore Park
  • Woodbridge
  • Maple
  • King City
  • Aurora
  • Newmarket
  • Mississauga
  • Bolton
  • Thornhill
  • Kleinburg
  • Nobleton
  • Bradford West Gwillimbury
  • Innisfil
  • Leaside
  • Rosedale

FAQ

Is a tankless water heater right for my home?

For most GTA homes with natural gas supply, tankless is an excellent upgrade — particularly when replacing an aging tank unit. The key requirements are adequate gas supply capacity and proper venting. We assess both during the site visit before recommending a unit.

The cost depends on the unit selected and the complexity of the installation — particularly whether gas line upgrades or new venting runs are required. We provide a clear all-in quote before any work begins.

Yes, but they require annual descaling maintenance. GTA water is moderately hard, and mineral scale can reduce a tankless unit's efficiency over time. An annual maintenance visit that includes a vinegar flush through the heat exchanger keeps the unit performing at spec.

Yes. We diagnose and repair all major brands of tankless water heaters. Common issues include scale buildup, igniter failure, error codes related to flow sensors, and heat exchanger issues. Call us with your unit's model and error code and we can often diagnose over the phone.

CONTACT US

For tankless water heater installation and service across Vaughan, Toronto, and the GTA, call or text Aviv Plumbing at (416) 678-8737 or email info@avivplumbing.ca