It’s frustrating to run out of hot water just as you’re winding down with a shower after a long day. If you’re looking for a continuous supply of hot water or planning to replace an aging storage tank, tankless water heater installation in Mississauga is a smart, energy-efficient solution. For reliable comfort and hot water on demand, Tamas Mechanical provides professional tankless water heater installation for homes and businesses throughout Mississauga and nearby areas.




Tamas Mechanical provides expert, TSSA-certified tankless water heater installation with a focus on correct sizing, safe installation, and transparent pricing.

Licensed HVAC and plumbing technicians who install tankless systems to manufacturer specifications and Ontario code.

Over 15 years of hands-on experience installing and replacing water heating systems across the GTA.

We’re not done until you’re completely happy with our work.

A clear quote before installation begins equipment, labour, and permits with no hidden costs.
Tamas Mechanical offers professional tankless water heater installation in Mississauga. We ensure your system is properly sized, safely installed, and operates at peak efficiency.
Never worry about running out of hot water during showers, baths or laundry.. A tankless unit heats water as you need it, guaranteeing a continuous supply for your household.
A tankless water heater doesn't heat water when you don’t need it, while a storage tank has to operate continuously to keep water hot all day. This helps reduce energy consumption and can lower your monthly utility bills.
With proper usage and maintenance, tankless water heaters usually last much longer than traditional storage tank models. Their durable design can help you avoid premature replacement costs.
Unlike bulky storage tanks, tankless units mount neatly on the wall and take up minimal space. This frees up valuable room in utility closets, basements, or mechanical areas.
Because there is no storage tank, you won't have to worry about tank corrosion or major leaks caused by a ruptured tank. Tankless systems also minimize sediment buildup that can affect performance over time.
Installing a modern, energy-efficient tankless water heater can make your home more appealing to future buyers. It's a practical upgrade that adds long-term value while improving everyday comfort.

Traditional hot water storage tanks have long been the most common choice because of their lower upfront cost. However, tankless water heaters, available in both electric and natural gas models, are becoming increasingly popular for their energy efficiency and continuous hot water supply. The comparison below highlights the differences between tank and tankless water heaters to help you choose the best option for your home.
| Point of Comparison | Tank | Tankless |
| Process | Stores and heats water in a tank | Heats water only when needed |
| Hot Water Supply | Limited by tank capacity | Continuous hot water on demand |
| Upfront Cost | Lower purchase and installation cost | Higher initial investment |
| Energy Efficiency | Less efficient due to standby heat loss | More efficient since it heats water only when needed |
| Operating Cost | Higher energy costs over time | Lower utility bills due to better efficiency |
| Installation Complexity | Simpler installation, especially as a replacement | More complex; may require gas line, venting, or electrical upgrades |
| Space Requirements | Requires floor space for the tank | Compact wall-mounted design |
| Maintenance | Regular flushing and anode rod replacement | Annual descaling, especially in hard water areas |
| Lifespan | Around 8-12 years | Around 15-20 years with proper maintenance |
| Best For | Homes with moderate hot water demand | Homes seeking long-term savings and endless hot water |
Tamas Mechanical ensures every tankless water heater is installed correctly, safely, and in accordance with industry standards.

We assess your plumbing, venting, gas or electrical connections, water pressure, and household hot water demand.

We recommend the right tankless water heater based on your home's size, hot water needs, and budget. You'll also receive a detailed, transparent installation quote with no hidden fees.

Our certified installers handle every step of the installation with precision and care. Once everything is connected, we fine-tune your tankless water heater to ensure safe, reliable, and efficient performance.

We test your unit to ensure it has proper water flow, temperature, and performance. We'll also show you how to use and maintain your system.
Tamer was great, changed our entire HVAC unit, which now works perfectly fine. Very professional service and very knowledgeable, would highly recommend them for HVAC services.
We had an air conditioner malfunction over a long weekend and Tamer was kind enough to come fix it the next day! It's been running great ever since!Update: Our furnace also ended up acting up, and we got the same great service fixing that.
Very knowledgeable technician, knows what need to resolved the issue, quick response and we'll in time as committed.
Excellent as always! On time. Extremely thorough. Double checked all areas of concern and made the appropriate repairs. You couldn't ask for a better HVAC provider.
Had an issue with my old AC. Tamer visited, provided the right suggestions and installed in a day. Great professional service and strongly recommended.
Tamas Mechanical,a good AC and heating mechanic he is doing very good job,i call emigeat response, make a appointment and done the jobs they work my two homes, I am settesfed his job.
Tamer is the friendliest and easiest person to deal with. He rearranged his schedule to accommodate mine. I recommend Tamas mechanical and will continue using for all my needs
Needed help getting our air conditioner working again, great service. Tamer knows his stuff, was thorough, clean and explained everything he was doing as he went along.
I've been having issues with poor airflow at a number of my vents in addition to some freezing in my furnace room in my home in Mississauga. I found Tamas Mechanical online. They have great reviews, and after speaking with Tamer and having him complete his diagnostic, I see why. Tamer was professional, patient, and fair throughout my engagement with him.Tamer quickly identified the issue and tweaked some settings to resolve it. I will be going back to Tamer for all my HVAC needs going forward!
Overall I had an excellent experience with Tamer installing a smart thermostat in my home. He was very polite, organized, knowledgeable and very easy to work with throughout the process. I have already booked him in to service the furnace for next season. I would highly recommend hiring him for any work needed.
The gentleman was very knowledgeable, experienced and extremely helpful. He was fast in repairing my gas leaking pipe. I plan to use him again in the future. His company deals with gas leaks, furnace maintenance, duct cleaning and air conditioning maintenance. I'm a very satisfied customer.
Tamer was excellent in diagnosing and fixing a complicated furnace issue we had. This was not my first time using Tamer and it won’t be my last. He is our go to guy for HVAC. Very professional, conscientious and good at what he does. Would highly recommend.
I hired Tamas Mechanical Inc., for furnace and duct cleaning. Tamer’s team, Mahdi and Blessing, did a great job. Mahdi was careful and efficient with his work. I also appreciated that they were respectful of us and cleaned up after the service. Tamer was very responsive when I was inquiring and booking. Had a smooth and easy experience with them. I highly recommend these guys and would hire them again in the future.
Tamer did the job perfectly, he came ontime and his dedication to do task properly was obvious. Highly recommended
Had a great experience with this company. I was having a BBQ at my new house in a couple of days and needed an HVAC company to install a new natural gas line for my BBQ. I put a request in Homwstars and got a call from Tamas very quickly and arranged for a technician to arrive the next day and provided a quote over the phone based on some photos and measurements. Tamer was the technician and took about half a day to install the new line which worked perfectly. One small issue was that my fireplace pilot went out during the installatio and I couldn't relight it. But Tamer came back to do a manual light at no extra charge. Very happy with the service, price and friendliness of staff.
Tamer was a helpful guy. Helped fix my problem within a couple of hours. Would recommend him for any hvac issues.
I was struck by how honest he was. Didn’t charge me for a small task months ago and quickly resolved an issue today. Good workmanship and great value. I’m happy to rely on Tamas for my HVAC needs.
Tamer is great and makes sure all your equipment is in running order. Way better deal than something like Reliance. Here is the Bryant AC unit that he installed for us.
Tamas Mechanical provided great service. Was able to get a quote over the phone with a few pictures and have them completed 2 days later. Amazing work!
We needed repair work done on our HVAC/furnace. He was quick to respond, and quick to get to the repair. The price was very reasonable for great and honest work. Tamer was exceptionally knowledgeable and will not give empty promises. He was detailed and transparent in showing and explaining what the problem is, what he would recommend, and also allowed me the option to choose which route I wanted to take to truly fix the problem. He does not give you the run-around and works as quickly as possible without compromising quality. We felt like we were truly taken cared of. On top of that, the repair was flawless! We highly recommend Tamas Mechanical, and will gladly use his service again (should we need future repairs/ installations).
Tamer was very responsive and took time to understand the air conditioning issues and set very realistic expectations based on facts. Scheduling a visit was quick and easy, he arrived on time and did what was needed quickly while also being patient and took time to answer all questions and explained the details in relation to possible replacement of our old A/C and Furnace without trying to oversell us on anything. We would definitely recommend Tamas to everyone if you want someone who is clearly hardworking, wants to earn an honest living and win customers over the right way! Thank you Tamer and really appreciate your time and effort, you will definitely be our go to person for any heating/cooling issues.
I received excellent advice from Tamer regarding what power/BTU furnace I should choose. Prior to calling Tamas Mechanical, I had called several other companies, where I was getting conflicting and not clear advice on what BTU size I should choose. However, Tamer was clear on what BTU size I should choose and fair in the pricing. I was able to get advice on a Monday morning and order the unit by Tuesday and fortunately they accommodated me and had it installed two days later! The furnace is currently working well and keeping us warm and I also have a new humidifier April air 500 series that was also recommended and seems to be making the air in our house better. I will now be getting my ducts cleaned by Thomas mechanical and look forward to this service from them. I highly recommend this company.
We had Tamas come out due to a leak. He was professionally, timely and super friendly again this time. We are very satisfied with the work he did.Tamas is a great guy. Very friendly and informative. He installed a tankless water heater for us which has been working great. Also gave us a great price compared to what we were being quoted by others. Will definetly use his services in the future.
Tamer was quick to come diagnose our furnace and very knowledgeable on what the problem was. He took the time to answer our questions and listened to our concerns. He stayed in contact and updated us about when the part was going to be available and it was a quick turn around. He was very accessible and efficient. We would definitely recommend and use tamer again!
Tamas Mechanical were a pleasure to deal with. They replied promptly to my request, showed up within 12 hours and diagnosed the problem. Although the repair was beyond their scope, they were honest and upfront and recommended another company. I would use in the future if the need arises and recommend to others.
Tamer Sayer was the technician who came to service my furnace. I should preface my furnace is 14 years old and two other companies failed to fix the issue. Tamer spent over two hours diagnosing the issue and fixing it. Three weeks later furnace is still running like new. Al very grateful 🙏
Yes. It provides endless hot water, improves energy efficiency, and lasts longer than a traditional storage tank.
Most tankless water heater installations are finished within a day. If plumbing, gas lines, venting, or electrical upgrades are needed, the process may take longer.
The cost depends on the unit and whether plumbing, gas, venting, or electrical upgrades are required. Get a quote before proceeding with the service.
Some installations require permits or inspections, especially when gas lines or venting are modified. Tamas Mechanical ensures our installation work complies with local codes.
Yes. Most conventional hot water tanks can be replaced with a tankless system. Depending on your home’s existing plumbing, gas, venting, and electrical setup, some upgrades may be required.
The right size depends on your household’s peak hot water demand and the number of fixtures used at the same time. Through our assessment, we can recommend an appropriate unit.
Yes. The tankless water heaters heat water only when needed, reducing energy waste and lowering operating costs.
Yes. Annual maintenance involves descaling which helps prevent mineral buildup, improves efficiency, and extends the system’s lifespan.
Choosing a new hot water tank doesn’t have to be complicated. Our experienced technicians will guide you through the process, recommend the best option for your home, and install it properly so you can enjoy dependable hot water for years to come.