Tankless Water Heater Installation in GTA


At HVAC Group, we provide fast, reliable heater repair services across the GTA. Whether your furnace won’t start, airflow is weak, or temperatures are uneven, our certified technicians deliver expert repairs. Same-day emergency service also available to restore your heat quickly.









Hot Water Anytime
Upgrade to Smart Heating: GTA’s Trusted Tankless Water Heater Installation Service
Tired of running out of hot water? A tankless water heater delivers endless hot water, lower energy bills, and a compact, space-saving design. At HVAC Group, we install high-efficiency gas and electric systems with smart thermostats controls for easy temperature management. Our certified technicians ensure a seamless installation, handling venting, gas lines, and safety checks for homes and businesses across the GTA.
Water Heater Experts
Customized Installation Solutions to Fit Your Needs
New Tankless Water Heater Installation
Upgrade to a high-efficiency tankless water heater for endless hot water, reduced standby energy loss, and compact design. We handle gas line setup, venting, and system calibration for optimal performance.
Replacement of Traditional Water Heaters
Ditch your bulky storage water heater for a modern on-demand system. We safely remove old units, upgrade plumbing and venting, and install condensing or non-condensing tankless models.
System Sizing and Selection
Choosing the right system matters. We assess household water demand, flow rates (GPM), and gas or electric supply to recommend a properly sized tankless unit for maximum efficiency.

Professional Installation
Our certified technicians ensure safe and precise tankless water heater installation gas line connections, pressure adjustments, venting configurations, and thermostat calibration.
Post-Installation Support
We provide ongoing maintenance, system troubleshooting, and efficiency checks. Our team offers descaling, filter replacements, and performance optimization to keep your unit running smoothly.
Having a HVAC problem? We’ll FIX it today!
We’re available 24/7 to restore your comfort. Call now for same-day service!
Hot Water Anytime
Signs You Should Upgrade to a Tankless Water Heater
Running Out of Hot Water Frequently
If your showers turn cold too soon, your current water heater may be undersized. Tankless water heaters heat water on demand, so you’ll never run out, even with multiple taps running.
Rising Energy Bills
Traditional tanks constantly heat water, wasting energy. Tankless models only activate when needed, cut standby heat loss and reduce energy consumption by up to 50%.
Fluctuating Water Temperatures
Uneven heating is often caused by sediment buildup, worn-out heating elements, or an aging unit. A tankless system delivers stable, precise temperatures without unexpected cold bursts.
Leaking or Rusty Water Heater Tank
Rust and leaks signal corrosion inside the tank, which can lead to costly water damage and contamination. Tankless systems eliminate storage tanks, reducing leak risks and maintenance.

Limited Space in Your Home
Traditional water heaters take up valuable floor space. Tankless units are compact, wall-mounted, and perfect for condos, apartments, or homes needing extra storage room.
You Want Smart Home Integration
Modern tankless heaters have Wi-Fi-enabled controls, which allow you to adjust settings remotely, monitor usage, and integrate with smart home systems like Google Home or Alexa.
You Want a More Eco-Friendly Home
Tankless water heaters reduce carbon emissions, water waste, and gas usage. Many models include low-NOx burners, high-efficiency heating, and recirculation pumps for sustainability.
Water Heater is Over 10-15 Years Old
Older storage water heaters lose efficiency, require frequent repairs, and increase energy costs. Tankless systems last 20+ years, offering better performance and lower maintenance needs.
From Gas to Electric – We’ve Got Your Tankless Water Heater Covered
Gas-Powered Tankless Water Heaters
These systems use high-BTU burners for on-demand heating to deliver unlimited hot water with high flow rates. We handle gas line connections, venting, and combustion safety checks.
Electric Tankless Water Heaters
Perfect for smaller homes and point-of-use applications, these units feature heating coils, digital thermostats, and low standby energy loss. We ensure proper wiring and breaker capacity.
Hybrid Tankless Water Heaters
Hybrid systems combine heat pump technology with tankless efficiency for superior energy savings and rapid water heating. We install smart controls and optimize temperature settings.
Point-of-Use Tankless Water Heaters
Designed for single fixtures like sinks, dishwashers, or showers, these compact units reduce lag time and minimize energy waste. We install under-sink, inline, or wall-mounted models.
Qulaity Brands We Work With
From Carrier to Trane – The Best AC Brands We Work With












Heat Water Right
From Condos to Commercial Buildings – We Install Everywhere
Residential
We install high-efficiency tankless water heaters in homes, condos, and apartments, ensuring consistent hot water, optimized flow rates, and precise temperature control. Our licensed technicians handle gas line connections, venting, and electrical upgrades for a seamless setup.
Commercial
Businesses require reliable hot water for daily operations. We install high-capacity tankless systems for restaurants, hotels, office buildings, and multi-unit properties. We handle multiple unit setups, recirculation pumps, advanced venting configurations, and high-GPM output optimization to support heavy usage.

Stay Warm, Always
Emergency Tankless Water Heater Services – Available 24/7
No hot water? Our 24/7 emergency service ensures fast diagnostics and repairs for ignition failures, gas leaks, pressure fluctuations, and sensor malfunctions. We handle error code troubleshooting, burner system issues, and venting blockages to restore hot water fast. Our certified technicians are ready to provide same-day service across the GTA.
Emergency Water Heater Services
Get fast, same-day service with 24/7 availability for all your water heater emergencies. Whether it’s a sudden breakdown or no hot water, our expert technicians are ready to restore your comfort. Call now, and we’ll send help right to your door

Your Heating Experts
Save More, Waste Less – Energy-Efficient Water Heating Solutions
Upgrade to a high-efficiency tankless water heater for lower energy bills and reduced water waste. Our on-demand heating systems use condensing technology, recirculation pumps, and low-NOx burners to optimize flow rates, eliminate standby heat loss, and improve efficiency.
Why to Work with Us
Why Should You Choose Us For Tankless Water Heater Installation

Experience and Expertise
With years of industry experience, we specialize in tankless water heater sizing, venting configurations, gas line connections, and high-efficiency system installations for homes and businesses.

Fast & Reliable Service
Our team provides same-day installation, handling unit mounting, plumbing connections, and thermostat calibration efficiently to minimize downtime and ensure immediate hot water access.

Certified & Experienced Technicians
Our licensed HVAC professionals handle gas, electric, and hybrid tankless water heaters, ensuring safe installations, proper combustion settings, and energy-efficient performance.

Installation for All Major Brands
We install and service Rinnai, Navien, Noritz, Bosch, Rheem, Takagi, AO Smith, and Stiebel Eltron tankless water heaters, offering OEM parts and expert system integration.

High-Quality Tools & Equipment
We use precision manifold gauges, combustion analyzers, and digital flow rate testers to guarantee optimal gas pressure regulation, water flow adjustments, and seamless unit integration.

Long-Term Efficiency & Performance
We optimize GPM flow rates, temperature regulation, and recirculation pump settings to ensure consistent hot water, lower energy consumption, and extended system lifespan.

Safety Codes & Regulations
We ensure all installations meet Ontario gas codes, CSA safety standards, and manufacturer guidelines for proper venting, pressure regulation, and carbon monoxide safety compliance.

Competitive Pricing
We offer transparent pricing with no hidden fees to provide detailed cost breakdowns for installation, venting modifications, gas line upgrades, and long-term energy savings calculations.
Location We Serve
- Brampton
- Burlington
- Concord
- Etobicoke
- Milton
- Mississauga
- North York
- Oakville
- Thornhill
- Toronto
- Vaughan
- Woodbridge
- Georgetown
Frequently Asked Questions
Can a tankless hot water heater be repaired?
Yes, most tankless water heater issues can be repaired. Common fixes include ignition system repairs, sensor replacements, burner cleaning, and heat exchanger descaling.
What is the life expectancy of a tankless water heater?
A well-maintained tankless water heater lasts 15–20 years. Regular descaling, filter cleaning, and component inspections help extend its lifespan.
How do you fix a tankless water heater problem?
Repairs depend on the issue. We diagnose error codes, flush scale buildup, adjust gas pressure, clean sensors, and repair electrical components to restore proper function.
Are tankless water heaters serviceable?
Yes, they require regular maintenance and occasional repairs. Technicians can replace parts, clean filters, descale the heat exchanger, and troubleshoot system malfunctions.
Do tankless water heaters need to be flushed every year?
Yes, especially in areas with hard water. Flushing removes mineral buildup, prevents clogs, and maintains heating efficiency, extending the unit’s lifespan.
What is the labor cost to repair a tankless water heater?
Labor costs vary based on the issue and brand. Basic repairs start at $150–$300, while complex fixes like heat exchanger replacement can exceed $500.
Why is my tankless water heater not producing hot water?
Common causes include ignition failure, a faulty flow sensor, clogged filters, or a gas supply issue. A professional diagnosis can pinpoint and resolve the problem.
How do I know if my tankless water heater needs repair?
Signs include fluctuating temperatures, error codes, unusual noises, low water pressure, and leaks. If you notice these issues, schedule a repair immediately.
Can I repair my tankless water heater myself?
Some minor tasks, like filter cleaning or resetting the unit, can be done by homeowners. However, gas, electrical, and component repairs should be handled by a certified technician.
How often should a tankless water heater be serviced?
Annual maintenance is recommended to keep your system running efficiently. This includes flushing the heat exchanger, cleaning filters, checking venting, and testing gas pressure.