Serving 338K residents
Professional Water Heater Installation & Repair in Markham, Ontario
Expert installation, repair, and maintenance for tank and tankless water heaters from all major brands. Same-day service available across the GTA.
Serving neighbourhoods including Unionville, Cornell, Markham Village, Berczy, Cathedraltown and surrounding communities, our licensed technicians bring local expertise and fully equipped trucks for same-day service.
Why Markham Homeowners Choose ProFlow for Water Heater Installation & Repair
Every community has unique plumbing characteristics shaped by housing age, soil conditions, and local infrastructure. Our technicians are experienced with the specific challenges that local homeowners face — from the properties in Unionville to the homes in Cathedraltown.
Hard Water Staining and Fixture Damage
Like much of the GTA, Markham receives hard Lake Ontario water. The chalky white deposits on fixtures and glass shower doors are calcium carbonate. Beyond aesthetics, scale buildup inside pipes and water heaters reduces efficiency and shortens equipment life. A water softener paired with annual heater flushing keeps everything running well.
Local Tip
Unionville's protected heritage district contains some of Markham's oldest homes, many dating to the mid-1800s. These properties often have original cast iron drain stacks that have corroded from the inside out over 100+ years. If you hear gurgling drains or notice slow drainage throughout the house, the cast iron stack may need lining or replacement. We use trenchless pipe lining technology to restore heritage home plumbing without damaging walls or floors.
Every ProFlow technician is licensed through the Technical Standards and Safety Authority and carries full insurance coverage. All work meets or exceeds Ontario Building Code requirements.
Our Water Heater Installation & Repair Process
Free In-Home Assessment
A licensed technician evaluates your current system, household hot water demand, and fuel type. We then present repair vs. replacement options with transparent pricing.
Select the Right Unit
We help you choose between tank and tankless models, comparing energy efficiency, capacity, and cost. We work with trusted brands like Rheem, Navien, and Bradford White.
Professional Installation
Our crew handles the full job — disconnecting and removing the old unit, running any new gas or water lines, and installing the new heater to Ontario Building Code standards.
Permits, Testing, and Warranty
We pull all required permits, arrange the municipal inspection, register your manufacturer warranty, and walk you through the system's operation and maintenance schedule.
What's Included
- Free in-home assessment and quote
- Removal and disposal of old unit
- Professional installation to code
- All necessary permits and inspections
- Manufacturer warranty registration
- Post-installation system check
Transparent Pricing
$200 – $3,500
Repairs start at $200. Tank water heater replacement from $1,500. Tankless installation from $2,800 including the unit.
All work performed to Ontario Building Code standards by licensed professionals. Prices are estimates — your written quote will reflect the actual scope of work.
Request a Detailed QuoteFrequently Asked Questions
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Other Services Available in Markham
Drain Cleaning
Professional drain cleaning and clog removal for kitchens, bathrooms, and main sewer lines using advanced hydro jetting technology.
Bathroom Renovation Plumbing
Complete pipe and fixture services for bathroom renovations — from rough-in to final installation. We handle every detail of your project.
Emergency Plumbing
24/7 emergency plumbing response across the GTA. Burst pipes, flooding, gas leaks, and sewer backups — we're there when you need us most.
Tankless Water Heater Installation
Dedicated tankless water heater installation and service. We carry Navien, Rinnai, and Noritz units with professional sizing, venting, and gas line work included.
Sump Pump Installation & Repair
Sump pump installation, repair, and battery backup systems to protect GTA homes from basement flooding caused by rising water tables and heavy rainfall.
Pipe Repair & Replacement
Expert pipe repair and replacement for copper, PEX, and ABS systems. We offer trenchless technology for minimal disruption and same-day burst pipe response.
View all plumbing services in Markham
Water Heater Installation & Repair in Nearby Areas
Get a Free Water Heater Installation & Repair Quote in Markham
Request a free, no-obligation estimate today. Same-day appointments available for urgent issues. Our licensed plumbers serve all Markham neighbourhoods.