Tankless water heater installation Mississauga
MississaugaHot Water System SupplierTankless Water Heater Installation
Tankless Water Heater Installation · Mississauga, Ontario

Tankless Water Heater Installation in Mississauga

Never run out of hot water again. Tankless water heaters heat on demand, eliminate standby energy loss, and last twice as long as traditional tanks. We size, install, and commission your new unit — done right the first time.

Free Estimates
TSSA Licensed
Up to 10-Year Warranty
Google Reviews
5.0 Rated

A homeowner in Port Credit was replacing an aging 50-gallon tank water heater that had been struggling to keep up with a busy household of five. Their two teenagers were regularly getting cold showers. We installed a Rinnai tankless unit on the same gas line with a modest upgrade to the gas supply. Hot water on demand, no tank to heat continuously, and noticeably lower gas bills. They haven't run out of hot water since. Tankless water heaters are one of the most popular upgrades we install across Mississauga, and it's easy to understand why. They heat water only when you need it, never run out, take up a fraction of the space of a traditional tank, and are significantly more energy-efficient over time.

Benefits of Going Tankless

Why Mississauga Homeowners Are Switching

Unlike traditional tank water heaters that continuously heat and store a volume of water, tankless units heat water on demand as it flows through the unit. Because there's no tank to maintain at temperature around the clock, you eliminate standby heat loss entirely.

That's typically where 15 to 20% of a traditional water heater's energy consumption goes — just keeping stored water hot when nobody is using it.

Unlimited hot water — no more cold showers
15-25% lower energy bills vs. traditional tanks
Compact wall-mounted unit frees up utility room space
Lifespan of 15+ years vs. 8-12 for traditional tanks
No risk of catastrophic tank failure or water damage
TSSA licensed technicians on every installation
Tankless water heater wall-mounted unit Mississauga
Assessment
Making the Right Choice

Tankless vs. Tank: What We Install

We install both types and can help you compare based on your home, usage, and budget.

Rinnai Tankless Units

One of the most trusted brands in the Canadian market. Excellent warranty coverage, strong technical support, and widely available parts. We recommend specific models based on your household size and usage patterns.

Navien Tankless Units

Known for their condensing technology and high efficiency ratings. Navien units are a strong choice for homes looking to maximize energy savings. We're fully trained on Navien installation and service.

Traditional Tank Water Heaters

More affordable upfront and straightforward to install. A solid choice for smaller households or homes where the budget for tankless isn't available right now. We install both and give you honest advice on which makes more sense for your situation.

Customer Reviews

What Mississauga Homeowners Are Saying

Google Reviews
Trustpilot
Matthew Girgis
Matthew Girgis
1 month ago
on
Had a sudden leak in our furnace and received a quick response from Yuri. He sent one of his technicians, Michael, who came within a couple hours and was able to fix the issue at a reasonable price. Great experience with this company. Honest work and fair rates. Would use again.
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Keenan Dion
Keenan Dion
1 month ago
on
I had a great experience with Beyond HVAC. They are very easy to deal with. I live in the Mimico/Park Lawn area and they were onsite within the hour. Michael resolved my heating issue for a great price, not having to replace the major components.
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Nicole C
Nicole C
1 month ago
on
We are super happy to have found Beyond HVAC. We live in the South Riverdale / Leslieville area and were really impressed with the quality of his work. Yuriy is quick to respond, very professional and very knowledgeable. We had the tankless Navien NPE-240A2 installed. The installation was done neatly, all the venting and piping were organized well. During the installation, he also pointed out several issues with our previous setup that weren’t done correctly. He took the time to explain them and fixed everything properly, which gave us a lot of confidence that the system was installed the right way. I highly recommend him!!
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Bradley
Bradley
2 months ago
on
Fantastic customer service. Fast friendly and efficient. Most importantly they are honest and very helpful.
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Mark Leung
Mark Leung
2 months ago
on
Yuriy and Michael were consummate professionals - they laid out our options, provided clear communication and timely follow-ups. Could not be happier with their high service levels. Will likely be our go to for the foreseeable future. FYI: They replaced an aging water tank and serviced our furnace.
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A H
A H
3 months ago
on
I came across Beyond HVAC while looking for a company that can perform routine tankless water heater maintenance and service in Etobicoke. I have used the installer before but he doesn't respond. I called in the morning and got a call back soon thereafter from Yuriy and set up an appointment for the next morning. I was thankful for the quick response time as well as the ability to set up an appointment relatively quickly. Michael came the next morning and was professional and courteous. He spent time to explain what he would do and after the service, he spent time to explain how it went and what I had to do (i.e. flush the pipes by turning on hot water at each faucet for 2-3 minutes). I would definitely use Beyond HVAC not only for tankless water heater maintenance but for other HVAC needs given my experience with them.
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Paul D.
Paul D.
4 months ago
on
Beyond HVAC provided excellent service. We needed someone who provided service in the Etobicoke area to diagnose and repair our gas range. Yuriy responded to our requirements in a professional, prompt and customer focused manner. He sourced the part for us and went out of way to get it installed on Christmas Eve so that we could enjoy a Christmas dinner, for which we were very appreciative. He kept us fully apprised of the situation, following up at each stage of the service. His service was professional, complete and provided with excellent customer focus. We are completely satisfied. We will use him again for further service requirements.
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Sam S
Sam S
4 months ago
on
Yuriy and Michael are very professional and knowledgeable. Michael was able to quickly diagnose and repair my malfunctioning furnace humidifier, and was happy to explain things as he worked. He went the extra mile to vacuum out some old renovation debris from the duct he was working on and cleaned up the work area when he was done. I'm glad to have a local HVAC professional I can trust!
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Our Process

What to Expect on Installation Day

1

Home Assessment

We assess your gas line capacity, venting options, existing plumbing connections, and household hot water demand. We size the unit correctly and give you a firm quote before anything is ordered.

2

Equipment & Scheduling

We recommend the right Rinnai or Navien model for your household, confirm availability, and schedule installation. Most standard installations are completed in six hours.

3

Professional Installation

We handle gas line connections, venting, plumbing, and electrical connections to code. If a gas line upgrade is required, we factor that into the quote upfront — no surprises on installation day.

4

Commissioning & Walkthrough

After installation, we run the system through a complete test cycle, confirm proper hot water delivery, set the temperature to the recommended 49°C, and walk you through the unit's controls and maintenance requirements. We also help you identify available rebates.

Thinking About Going Tankless?

Start with a home assessment. We size the system correctly and give you a firm quote before anything is ordered.

Financing

Flexible Financing Available

A tankless installation typically costs between $3,000 and $5,000 installed, depending on the unit and any required upgrades. We give you a firm quote after the initial assessment — no surprises on installation day.

We offer flexible financing through trusted lenders — including 0% interest for 12 months with approved credit. Spread the cost of your new system over time with monthly payment plans designed to fit any budget.

0% interest financing available
Deferred payment options (3 and 6 months)
Monthly payment plans for any budget
Quick approvals, apply in minutes
Explore Financing Options
Financeit 6 months deferral
0% financing availablePayment plans available
Financeit 0% interest equal payments
Why Choose Us

Your Trusted Hot Water Contractor in Mississauga

Transparent Pricing

We assess your home, size the system correctly, and give you a firm quote before any work begins. No surprises on installation day.

Proper Sizing & Installation

An undersized unit can't keep up with peak demand. We calculate your household's flow rate requirements and recommend the right unit — not just the one we have in stock.

Labour & Equipment Warranty

All installation work is backed by our labour warranty plus the manufacturer's equipment warranty — up to 10 years on heat exchangers with Rinnai and Navien.

Licensed & Certified

TSSA licensed and STO certified technicians on every job. Gas line work, venting, and plumbing connections all performed to Ontario code.

Equipment Partners

The Most Trusted HVAC Equipment
Brands for Your Etobicoke Home

As authorized contractors for leading HVAC manufacturers, we source and install only proven, high-efficiency equipment backed by manufacturer warranties.

Lennox HVAC equipment
Goodman HVAC equipment
Aprilaire HVAC equipment
Rinnai HVAC equipment
Navien HVAC equipment
Google Nest HVAC equipment
KeepRite HVAC equipment
Ecobee HVAC equipment
Frequently Asked Questions

Tankless Water Heater Installation in Mississauga

How long does it take to install a tankless water heater?

Most standard installations are completed in six hours. If your home requires a gas line upgrade, new venting, or significant plumbing modifications, the job may take longer. We give you a clear timeline after the initial assessment.

Do tankless water heaters really provide endless hot water?

Yes — as long as the unit is properly sized for your household's demand. A unit that's undersized for simultaneous use can struggle during peak demand. We size the system correctly for your home during the assessment.

Are tankless water heaters more energy efficient than traditional tanks?

Yes. By eliminating standby heat loss, tankless units typically use 15 to 25% less energy than a traditional tank water heater for the same household. The efficiency advantage is more pronounced for households that use moderate amounts of hot water.

How do I know what size tankless system my home needs?

Sizing is based on your household's peak flow rate demand and the incoming cold water temperature. We calculate this during the home assessment to ensure you get a unit that delivers consistent performance without being oversized.

What maintenance does a tankless water heater need?

Annual maintenance is recommended. The most important service for most Ontario homes is descaling — flushing the heat exchanger to remove mineral buildup. Hard water accelerates this buildup, and a clogged heat exchanger reduces performance and can trigger error codes.

Can a tankless water heater work with my existing gas line?

Often yes, but not always. Tankless units have higher BTU output than tank water heaters, which sometimes requires a gas line upgrade to deliver adequate flow. We assess your existing setup during the consultation and factor any required upgrades into the quote upfront.

How long do tankless water heaters typically last?

Tankless water heaters typically last 15 years or more with proper annual maintenance. This is roughly double the lifespan of a traditional tank water heater, which significantly offsets the higher upfront cost over time.

Get Started Today

Book Your Tankless Assessment

Contact Beyond HVAC today for tankless water heater installation in Mississauga. TSSA licensed, STO certified, and trusted by homeowners across the GTA.