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4.6
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Canada PROUDLY CANADIAN

Tankless Water Heater Installation

Energy-Efficient Tankless Water Heaters for Ontario Homes

Enjoy continuous hot water on demand while improving energy efficiency with a tankless water heater!
Get reliable hot water year-round with a properly sized tankless water heater from LG Home Comfort. Our expert HVAC technicians handle everything from tankless water heater installation to timely maintenance and repair.
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1-866-438-5442
100K+

Homeowners served

10yr

Warranty coverage

4.6

2,800+ Reviews

Accreditations

TSSA-Registered
ESA-Licensed
BBB Accredited Business
HRAI Member
WHY GO TANKLESS

Hot Water on Demand, When You Need It.

Traditional storage water heaters keep a supply of hot water in a tank and periodically reheat it to maintain the set temperature. Tankless water heaters work differently, heating water on demand as it flows through the system.
With the right tankless water heater for your home’s hot water demand, you can enjoy a steady supply of hot water while taking up less space than a traditional storage tank.
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Running Out of Hot Water?
A properly sized tankless system can provide hot water as you need it, rather than relying on a limited storage tank.
Tankless water heaters heat water on demand, so there’s no storage tank to refill and reheat before hot water is available again.
Compact, wall-mounted designs can free up valuable floor space compared with traditional storage water heaters.
We can assess your current water heater and determine whether a tankless system is suitable for your home’s hot water demand and installation requirements.
LOW MAINTENANCE

Less Storage. Smart Maintenance. Long-Term Performance.

Tankless water heaters do not store a large volume of hot water, but they still require routine maintenance. Following the manufacturer’s maintenance recommendations and scheduling professional service can help maintain reliable operation and long-term performance.
Water quality can also affect maintenance requirements, particularly in areas with hard water where mineral scale can build up inside the system.

Regular Professional Service

Routine service can help identify issues early and keep your system operating as intended.

Manufacturer Recommended Maintenance

Maintenance requirements vary by model. Following the manufacturer's recommendations helps protect long-term performance

Hard Water Considerations

Mineral buildup can affect tankless equipment in areas with harder water. Our technician can help determine whether additional maintenance or water treatment is appropriate.

Wondering What A Tankless Water Heater Costs in Ontario?

Costs can vary based on your home setup, water demand, and system type

Learn About Tankless Water Heater Cost in Ontario →

360° Home Comfort

Complete Tankless Water Heater Services

From choosing a new system to installation, replacement and ongoing service, LG Home Comfort can help with your tankless water heater needs.

Tankless Water Heater Installation

Installing a tankless water heater? Our licensed technicians assess your hot water needs and complete the installation in accordance with manufacturer requirements and applicable Ontario safety standards.
Ask Our Installation Experts

Tankless Water Heater Replacement

Replacing an aging or unreliable water heater? We’ll assess your existing setup and help you choose a suitable replacement with professional tankless water heater replacement in Ontario.
Ask Our Replacement Experts

Tankless Water Heater Repair

Experiencing temperature changes, error codes or reduced performance? Our technicians can diagnose your system and provide tankless water heater repair in Ontario.
See Repair Services
WHY GO TANKLESS.

Why Ontario Homeowners Are Choosing
Tankless Water Heaters.

Many residential storage water heaters hold approximately 40-60 gallons, depending on household hot water demand and system design. They periodically reheat the stored water to maintain the set temperature, causing standby heat loss. A tankless water heater works differently, heating water on demand as it flows through the system.
When properly sized and maintained, a tankless system can provide endless on-demand hot water within its rated flow capacity, reduce standby energy use, and offer a service life of 20 years or more, depending on the model, water quality, and usage.

Tankless VS. Storage Tank

See how a tankless water heater delivers more hot water, saves energy, and makes better use of your space.
TANKLESS WATER HEATER
TANK WATER HEATER

ENDLESS, NEVER RUNS OUT

  • Hot water supply

RUNS OUT, THEN REHEATS

UP TO 96% EFFICIENT

  • EFFICIENCY

AROUND 67% EFFICIENT

20+ YEARS WITH SERVICING

  • LIFESPAN

10-15 YEARS

WALL-MOUNTED, SAVES SPACE

  • SPACE NEEDED

LARGE FLOOR-MOUNTED TANK

UP TO 37% LESS

  • MONTHLY COST

HIGHER UTILITY BILLS

Tankless Water Heater BENEFITS

Benefits of a Tankless Water Heater for Your Home

Hot Water On Demand

Whether you’re showering or doing laundry or washing the dishes, tankless units provide hot water precisely when you need it.

Energy Efficiency

On-demand heating eliminates most standby heat loss associated with storing hot water, which may reduce energy consumption depending on household usage.

Space Saving

Tankless units are typically wall-mounted, helping reduce the floor space required for water-heating equipment.

Longer Lifespan

Tankless units don’t store water, meaning a reduced chance of ruptures or leaks when compared to tank heaters.
Installation Process

Tankless Installation Made Easy

Switching to tankless does not have to be complicated. We’ll guide you through the process and help ensure the system suits your home.

Home Assessment

We review your current water heater, hot water demand, fuel source, available space and installation requirements.

System Recommendation

We’ll help you choose a tankless water heater with the capacity and features suited to your home’s needs, including proper tankless water heater sizing in Ontario.

Professional Installation

Our installation team installs the system and completes the required plumbing and venting connections, safety components and other installation requirements.

Final System Check

We’ll test the system to confirm it is operating properly and explain the key information you need to know about its operation and maintenance.

We Install & Service All Major Tankless Brands

Need Help Choosing a Tankless Water Heater?

Not sure what size or system is right for your home? Our experts can help you choose a tankless water heater suited to your home's hot-water demand, fuel source, installation requirements and budget.

1-866-438-5442

What Our Customers Say

We switched to a tankless water heater because our old tank was taking up too much space. The installation went smoothly, and the technician explained how the new system works before leaving. We’ve been very happy with the hot water so far.
Maria T.

Verified Customer

Toronto, ON
The technician checked our hot water needs and existing setup before recommending the unit. The installation was neat, and everything was tested before they finished. It was a straightforward experience from start to finish
Sarah P.

Verified Customer

Mississauga, ON
With two bathrooms and a busy household, our old water heater wasn’t always keeping up. Since installing the tankless system, we’ve had much more consistent hot water during our normal daily use. The LG Home Comfort team also took the time to answer all our questions.
Daniel M.

Verified Customer

Ottawa, ON
TANKLESS WATER HEATER FAQ

Frequently Asked Questions

Get answers to common questions about tankless water heater sizing, installation, maintenance, lifespan and hot-water capacity in Ontario.
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Are tankless water heaters worth it in Ontario?

Tankless water heaters can be a good option for homes that want on-demand hot water, a compact system and potentially lower energy use. Whether one is right for you depends on your household’s hot water demand, fuel source, installation requirements and budget.
Tankless water heaters are compact units that heat water as it flows, providing homes with a continuous supply of hot water. Rather than constantly heating unused water, they heat on-demand-but without delay-when you turn on the tap. Their more compact size makes them practical for all different kinds of homes.
Tankless water heaters can provide many years of service when properly selected, installed and maintained. Actual service life depends on the equipment, installation, water conditions, usage and maintenance.
In many homes, yes. However, the existing gas line, plumbing, venting, electrical requirements, water connections and available installation space may need to be assessed before installation.
Yes. Tankless systems are not maintenance free. Maintenance requirements vary by model and water conditions, so homeowners should follow the manufacturer’s recommendations and arrange professional service as required.
A properly sized tankless system can provide a continuous supply of heated water. However, its output is limited by its flow rate and the amount of hot water your household needs at the same time.
It depends on the system’s flow rate, incoming water temperature and the total hot water demand. Multiple fixtures operating at the same time can exceed a unit’s capacity, which is why proper sizing is important.
AREAS WE SERVE

Tankless Water Heater Services Across Ontario Communities

LG Home Comfort provides tankless water heater installation, replacement, repair and maintenance services to homeowners across Ontario.
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Vaughan
301 Bradwick Drive,
Vaughan, ON L4K 1K5, Canada
Kitchener
20 Hanson Ave,
Kitchener, ON N2C 2E2, Canada
Mississauga
7885 Tranmere Dr,
Mississauga, ON L5S 1V8, Canada
Ottawa
17 Grenfell Crescent Unit 7,
Ottawa, ON K2G 0G3, Canada

Find your community below to explore local HVAC solutions.

Ajax
Ayr
Aurora
Barrie
Binbrook
Bradford
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Burlington
Cambridge
Caledonia
Chatham-Kent
Delhi
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Durham
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Fergus
Georgetown
Georgian Bay
Guelph
Halton Hills
Hamilton
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King City
Kingston
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London
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