Tankless Water Heater Repair in Toronto
Are you dealing with tankless water heater problems in your home? At Real Deal HVAC, we specialize in providing reliable tankless water heater repair services to homeowners in Mississauga and surrounding areas. With years of experience and a team of certified technicians, we ensure your tankless unit operates efficiently and effectively.
Our professional plumbers are equipped to handle various issues, from sediment buildup and water leaks to gas line inspections and error codes. Whether you need regular maintenance or emergency service, we’re here to provide peace of mind and restore your hot water supply quickly and safely.


Common Tankless Water
Heaters Issues
Common Issues
Inconsistent Hot Water – Sudden bursts of cold water or fluctuating temperature often signal internal sensor issues. These problems disrupt comfort and reduce overall system efficiency.
Water Pooling or Leaks – Moisture near the unit may point to sediment buildup or a failing heat exchanger. Addressing leaks early prevents long-term damage.
Reduced Water Flow – A noticeable drop in hot water pressure can mean mineral buildup or clogged components. This limits performance and increases strain on your system.
Signs You Need Repair
Strange Noises – Clicking, rumbling, or buzzing sounds often indicate worn parts or trapped debris. These noises shouldn’t be ignored, as they can lead to larger issues.
Error Codes on the Display – Control panel alerts are your system’s way of warning you about malfunctioning components. A professional diagnosis ensures accurate, safe repairs.
Carbon Monoxide Concerns – In gas-powered systems, burner or gas line issues can create dangerous CO risks. Immediate service is required to keep your home safe.
When To Call Us?
Performance Drops – Slower heating or inconsistent temperature means your system is struggling. Professional inspection prevents further disruption to your hot water supply.
Persistent Leaks or Drips – Ongoing water issues point to internal component failure. Prompt repairs protect both your tankless unit and your home.
System Shutdowns – If your tankless heater turns off unexpectedly or won’t maintain heat, expert service is needed. Addressing the problem early keeps your unit running efficiently.
Tankless Water Heater Repair
Services for Homeowners
When it comes to tankless water heater repair, Real Deal HVAC stands out as the trusted choice for homeowners in Mississauga. We understand the importance of having an efficient hot water system that meets your household’s needs. Our skilled technicians are trained to work on all types of tankless systems, ensuring that your unit delivers endless hot water whenever you need it.
We offer same-day service and reliable solutions tailored to your tankless water heater needs. Whether you’re facing reduced water flow, sediment buildup, or error codes, our licensed plumbers have the expertise to diagnose and resolve the issue efficiently. With no hidden fees and a commitment to customer satisfaction, we deliver peace of mind with every repair.


Regular Maintenance Services
For Energy Efficiency
Regular maintenance is essential to keep your tankless water heater functioning efficiently and to prevent costly repairs. At Real Deal HVAC, we provide professional tankless water heater maintenance services to help homeowners in Toronto extend the lifespan of their systems and reduce energy costs. With our expert care, you can ensure that your demand water heaters deliver a consistent hot water supply while maintaining peak performance.
Our maintenance services include cleaning the system to prevent sediment buildup, which can harm the heat exchanger and reduce overall efficiency. We also inspect your water systems for leaks, pressure issues, and other potential problems, ensuring that your unit operates without interruption. By improving water quality and addressing hard water concerns, we help protect your investment and promote energy efficiency.
With our skilled technicians, we ensure that your tankless unit is calibrated to meet your household’s demand for endless hot water. Regular inspections and system optimization can significantly reduce energy bills, providing you with long-term energy savings and peace of mind. Trust Real Deal HVAC to handle your maintenance needs and keep your hot water system running smoothly for years to come.
Our 3 Step Repair Process
Step 1: Contact us –Call our certified water heater technicians to schedule your professional tankless water heater repair in Toronto.
Step 2: Quick Arrival – Our team arrives promptly to inspect your system, diagnose the issue and prepare for repair.
Step 3: Same Day Fix – We Fix most water heaters the same day, restoring reliable heat and hot water to your home.
Most Common Questions About Tankless Water Heater Repairs
What are common signs you need repair?
Inconsistent hot water, reduced flow rate, strange noises, or error codes often indicate a problem. Water leaks or sudden bursts of cold water are also clear signs your tankless system needs attention.
Why does the temperature keep fluctuating?
Temperature swings usually come from sediment buildup, a failing heat exchanger, or clogged filters. A technician can clean or replace the affected parts to restore steady hot water.
What causes low water flow in my water heater?
Low flow rate is often caused by mineral buildup, blocked inlet screens, or issues with the water filter. Regular maintenance keeps the system clean and helps maintain strong, consistent water flow.
Do you offer emergency services?
Yes. Real Deal HVAC provides fast emergency service for sudden hot water loss, leaks, or system shutdowns. We respond quickly so homeowners can restore reliable hot water without long delays.
How can I prevent future problems?
Routine maintenance, descaling, and annual inspections help keep your tankless unit running efficiently. Keeping the system clean protects the heat exchanger and ensures long-term performance and energy savings.
What are common signs you need repair?
Inconsistent hot water, reduced flow rate, strange noises, or error codes often indicate a problem. Water leaks or sudden bursts of cold water are also clear signs your tankless system needs attention.
Why does the temperature keep fluctuating?
Temperature swings usually come from sediment buildup, a failing heat exchanger, or clogged filters. A technician can clean or replace the affected parts to restore steady hot water.
What causes low water flow in my water heater?
Low flow rate is often caused by mineral buildup, blocked inlet screens, or issues with the water filter. Regular maintenance keeps the system clean and helps maintain strong, consistent water flow.
Do you offer emergency services?
Yes. Real Deal HVAC provides fast emergency service for sudden hot water loss, leaks, or system shutdowns. We respond quickly so homeowners can restore reliable hot water without long delays.
How can I prevent future problems?
Routine maintenance, descaling, and annual inspections help keep your tankless unit running efficiently. Keeping the system clean protects the heat exchanger and ensures long-term performance and energy savings.
Comprehensive Heating and
Air Conditioning Solutions
Our team specializes in heating and air conditioning solutions, including furnace maintenance and air conditioner repair. We ensure that your HVAC system operates efficiently throughout the year, providing reliable heating and cooling when you need it most. If you’re looking to improve your home comfort, our HVAC technicians can recommend upgrades or repairs tailored to your needs.
For plumbing services, we handle everything from gas line inspections to water softener and water filter installations. If you’re considering a hot water system upgrade, we can replace your traditional tank with a high-efficiency tankless unit. With decades of experience and a commitment to customer satisfaction, we provide professional solutions that deliver long-term benefits.


Our Tankless Water Heater Repair Process
Step 1: Full Systems Assessment
We begin with a complete inspection of your tankless system to identify the root cause of the issue. Our technicians carefully assess components like the heat exchanger, gas burner, and gas line to ensure nothing is overlooked.
Step 2: Full System Clean & Fix
Next, we check for sediment buildup, hard water issues, and worn sensors that may be limiting performance. We clean or replace temperature sensors, water filters, and other affected parts to restore proper flow and efficiency.
Step 3: System Calibration
We inspect the pressure relief valve, confirm gas line safety, and test the hot water tap to verify steady output. Proper calibration ensures consistent hot water delivery and improves long-term energy savings.
Step 4: Final Testing
Once repairs are complete, we run a full performance test to confirm stable water flow, reliable heating, and overall system health. Your technician ensures everything is functioning at peak performance so your home receives endless hot water with confidence.
Contact Real Deal HVAC in
Mississauga For Your Repair Needs
When you need reliable tankless water heater repair or maintenance, trust Real Deal HVAC to deliver expert solutions in Mississauga and surrounding areas. Our professional plumbers are available for same-day service, and you can easily book online to schedule a visit at your convenience. With a focus on customer satisfaction and no hidden fees, we ensure a hassle-free experience for all your water heater needs.
Don’t let water heater problems disrupt your home comfort. Contact Real Deal HVAC today for fast, efficient, and trustworthy service. Let our certified technicians handle your repairs and maintenance, so you can enjoy consistent hot water and energy efficiency throughout the year.


Tankless Water Heater Repair in Toronto
Are you dealing with tankless water heater problems in your home? At Real Deal HVAC, we specialize in providing reliable tankless water heater repair services to homeowners in Toronto and surrounding areas. With years of experience and a team of certified technicians, we ensure your tankless unit operates efficiently and effectively.
Our professional plumbers are equipped to handle various issues, from sediment buildup and water leaks to gas line inspections and error codes. Whether you need regular maintenance or emergency service, we’re here to provide peace of mind and restore your hot water supply quickly and safely.
Common Tankless Water Heaters Issues
Common Issues
Faulty Ignition System – A worn ignitor or pilot light can stop
Your furnace from producing heat, leaving your home cold.
Dirty Flame Sensor – When covered in dust or soot, the sensor
can’t detect the flame, so the burner automatically shuts off.
Thermostat Malfunction – Incorrect settings or wiring issues can
prevent your system from communicating properly, reducing efficiency and airflow.
Signs You Need Repair
Banging or Rattling Sounds – Loose parts, a cracked heat
Exchanger or blower motor issues can cause loud, disruptive noises.
Burning or Electrical Odour – Dust or wiring problems can produce
burning smells when your furnace cycles on.
Rotten Egg Smell – A sulphur odour may indicate a gas leak
and needs immediate emergency furnace repair for safety.
Turn off your systems and call Real Deal HVAC immediately.
When To Call Us?
Performance Drops – Slower heating or inconsistent temperature means your system is struggling. Professional inspection prevents further disruption to your hot water supply.
Persistent Leaks or Drips – Ongoing water issues point to internal component failure. Prompt repairs protect both your tankless unit and your home.
System Shutdowns – If your tankless heater turns off unexpectedly or won’t maintain heat, expert service is needed. Addressing the problem early keeps your unit running efficiently.
When it comes to tankless water heater repair, Real Deal HVAC stands out as the trusted choice for homeowners in Toronto. We understand the importance of having an efficient hot water system that meets your household’s needs. Our skilled technicians are trained to work on all types of tankless systems, ensuring that your unit delivers endless hot water whenever you need it.
We offer same-day service and reliable solutions tailored to your tankless water heater needs. Whether you’re facing reduced water flow, sediment buildup, or error codes, our licensed plumbers have the expertise to diagnose and resolve the issue efficiently. With no hidden fees and a commitment to customer satisfaction, we deliver peace of mind with every repair.
Expert Tankless Water Heater Repair Services for Homeowners
Regular maintenance is essential to keep your tankless water heater functioning efficiently and to prevent costly repairs. At Real Deal HVAC, we provide professional tankless water heater maintenance services to help homeowners in Toronto extend the lifespan of their systems and reduce energy costs. With our expert care, you can ensure that your demand water heaters deliver a consistent hot water supply while maintaining peak performance.
Our maintenance services include cleaning the system to prevent sediment buildup, which can harm the heat exchanger and reduce overall efficiency. We also inspect your water systems for leaks, pressure issues, and other potential problems, ensuring that your unit operates without interruption. By improving water quality and addressing hard water concerns, we help protect your investment and promote energy efficiency.
With our skilled technicians, we ensure that your tankless unit is calibrated to meet your household’s demand for endless hot water. Regular inspections and system optimization can significantly reduce energy bills, providing you with long-term energy savings and peace of mind. Trust Real Deal HVAC to handle your maintenance needs and keep your hot water system running smoothly for years to come.
Regular Maintenance Services
for Energy Efficiency
Contact Real Deal HVAC in Toronto for
Your Repair Needs
When you need reliable tankless water heater repair or maintenance, trust Real Deal HVAC to deliver expert solutions in Toronto and surrounding areas. Our professional plumbers are available for same-day service, and you can easily book online to schedule a visit at your convenience. With a focus on customer satisfaction and no hidden fees, we ensure a hassle-free experience for all your water heater needs.
Don’t let water heater problems disrupt your home comfort. Contact Real Deal HVAC today for fast, efficient, and trustworthy service. Let our certified technicians handle your repairs and maintenance, so you can enjoy consistent hot water and energy efficiency throughout the year.
Most Common Questions About
Tankless Water Heater Repairs
What are the most common signs my tankless water heater needs repair?
Inconsistent hot water, reduced flow rate, strange noises, or error codes often indicate a problem. Water leaks or sudden bursts of cold water are also clear signs your tankless system needs attention. While the upfront installation cost may be higher than that of a traditional water heater, the long-term savings on energy bills and the extended life expectancy of tankless models make them a worthwhile investment. To provide transparency, we offer a free quote for our services so you can understand the total costs before starting the installation process. Contact us today or book online to get an accurate estimate tailored to your home’s specific needs.
Why am I getting fluctuating temperatures from my tankless system?
Temperature swings usually come from sediment buildup, a failing heat exchanger, or clogged filters. A technician can clean or replace the affected parts to restore steady hot water.
What causes low water flow from my tankless water heater?
Low flow rate is often caused by mineral buildup, blocked inlet screens, or issues with the water filter. Regular maintenance keeps the system clean and helps maintain strong, consistent water flow.
Do Tankless Water Heaters Save Energy?
Yes. Real Deal HVAC provides fast emergency service for sudden hot water loss, leaks, or system shutdowns. We respond quickly so homeowners can restore reliable hot water without long delays.
What Tankless Water Heater Brands Do You Install?
Routine maintenance, descaling, and annual inspections help keep your tankless unit running efficiently. Keeping the system clean protects the heat exchanger and ensures long-term performance and energy savings.
What are the most common signs my tankless water heater needs repair?
Inconsistent hot water, reduced flow rate, strange noises, or error codes often indicate a problem. Water leaks or sudden bursts of cold water are also clear signs your tankless system needs attention. While the upfront installation cost may be higher than that of a traditional water heater, the long-term savings on energy bills and the extended life expectancy of tankless models make them a worthwhile investment. To provide transparency, we offer a free quote for our services so you can understand the total costs before starting the installation process. Contact us today or book online to get an accurate estimate tailored to your home’s specific needs.
Why am I getting fluctuating temperatures from my tankless system?
Temperature swings usually come from sediment buildup, a failing heat exchanger, or clogged filters. A technician can clean or replace the affected parts to restore steady hot water.
What causes low water flow from my tankless water heater?
Low flow rate is often caused by mineral buildup, blocked inlet screens, or issues with the water filter. Regular maintenance keeps the system clean and helps maintain strong, consistent water flow.
Do Tankless Water Heaters Save Energy?
Yes. Real Deal HVAC provides fast emergency service for sudden hot water loss, leaks, or system shutdowns. We respond quickly so homeowners can restore reliable hot water without long delays.
What Tankless Water Heater Brands Do You Install?
Routine maintenance, descaling, and annual inspections help keep your tankless unit running efficiently. Keeping the system clean protects the heat exchanger and ensures long-term performance and energy savings.
Our team specializes in heating and air conditioning solutions, including furnace maintenance and air conditioner repair. We ensure that your HVAC system operates efficiently throughout the year, providing reliable heating and cooling when you need it most. If you’re looking to improve your home comfort, our HVAC technicians can recommend upgrades or repairs tailored to your needs.
For plumbing services, we handle everything from gas line inspections to water softener and water filter installations. If you’re considering a hot water system upgrade, we can replace your traditional tank with a high-efficiency tankless unit. With decades of experience and a commitment to customer satisfaction, we provide professional solutions that deliver long-term benefits.
Comprehensive Heating and
Air Conditioning Solutions
Our Tankless Water Heater Repair Process
Step 1: Full Systems Assessment
We begin with a complete inspection of your tankless system to identify the root cause of the issue. Our technicians carefully assess components like the heat exchanger, gas burner, and gas line to ensure nothing is overlooked.
Step 2: Component Testing
Next, we check for sediment buildup, hard water issues, and worn sensors that may be limiting performance. We clean or replace temperature sensors, water filters, and other affected parts to restore proper flow and efficiency.
Step 3: System Calibration
We inspect the pressure relief valve, confirm gas line safety, and test the hot water tap to verify steady output. Proper calibration ensures consistent hot water delivery and improves long-term energy savings.
Step 4: Final Testing
Once repairs are complete, we run a full performance test to confirm stable water flow, reliable heating, and overall system health. Your technician ensures everything is functioning at peak performance so your home receives endless hot water with confidence.

Tankless Water Heater Repair in Toronto
Are you dealing with tankless water heater problems in your home? At Real Deal HVAC, we specialize in providing reliable tankless water heater repair services to homeowners in Toronto and surrounding areas. With years of experience and a team of certified technicians, we ensure your tankless unit operates efficiently and effectively.
Our professional plumbers are equipped to handle various issues, from sediment buildup and water leaks to gas line inspections and error codes. Whether you need regular maintenance or emergency service, we’re here to provide peace of mind and restore your hot water supply quickly and safely.
Common Tankless Water Heaters Issues
Common Issues
Inconsistent Hot Water – Sudden bursts of cold water or fluctuating temperature often signal internal sensor issues. These problems disrupt comfort and reduce overall system efficiency.
Water Pooling or Leaks – Moisture near the unit may point to sediment buildup or a failing heat exchanger. Addressing leaks early prevents long-term damage.
Reduced Water Flow – A noticeable drop in hot water pressure can mean mineral buildup or clogged components. This limits performance and increases strain on your system.
Signs You Need Repair
Strange Noises – Clicking, rumbling, or buzzing sounds often indicate worn parts or trapped debris. These noises shouldn’t be ignored, as they can lead to larger issues.
Error Codes on the Display – Control panel alerts are your system’s way of warning you about malfunctioning components. A professional diagnosis ensures accurate, safe repairs.
Carbon Monoxide Concerns – In gas-powered systems, burner or gas line issues can create dangerous CO risks. Immediate service is required to keep your home safe.
When To Call Us?
Performance Drops – Slower heating or inconsistent temperature means your system is struggling. Professional inspection prevents further disruption to your hot water supply.
Persistent Leaks or Drips – Ongoing water issues point to internal component failure. Prompt repairs protect both your tankless unit and your home.
System Shutdowns – If your tankless heater turns off unexpectedly or won’t maintain heat, expert service is needed. Addressing the problem early keeps your unit running efficiently.
Expert Tankless Water Heater Repair Services
for Homeowners
When it comes to tankless water heater repair, Real Deal HVAC stands out as the trusted choice for homeowners in Toronto. We understand the importance of having an efficient hot water system that meets your household’s needs. Our skilled technicians are trained to work on all types of tankless systems, ensuring that your unit delivers endless hot water whenever you need it.
We offer same-day service and reliable solutions tailored to your tankless water heater needs. Whether you’re facing reduced water flow, sediment buildup, or error codes, our licensed plumbers have the expertise to diagnose and resolve the issue efficiently. With no hidden fees and a commitment to customer satisfaction, we deliver peace of mind with every repair.

Regular Maintenance Services for Energy Efficiency
Regular maintenance is essential to keep your tankless water heater functioning efficiently and to prevent costly repairs. At Real Deal HVAC, we provide professional tankless water heater maintenance services to help homeowners in Toronto extend the lifespan of their systems and reduce energy costs. With our expert care, you can ensure that your demand water heaters deliver a consistent hot water supply while maintaining peak performance.
Our maintenance services include cleaning the system to prevent sediment buildup, which can harm the heat exchanger and reduce overall efficiency. We also inspect your water systems for leaks, pressure issues, and other potential problems, ensuring that your unit operates without interruption. By improving water quality and addressing hard water concerns, we help protect your investment and promote energy efficiency.
With our skilled technicians, we ensure that your tankless unit is calibrated to meet your household’s demand for endless hot water. Regular inspections and system optimization can significantly reduce energy bills, providing you with long-term energy savings and peace of mind. Trust Real Deal HVAC to handle your maintenance needs and keep your hot water system running smoothly for years to come.
Our 3 Step Repair Process
Step 1: Contact us –Call our certified water heater technicians to schedule your professional tankless water heater repair in Toronto.
Step 2: Quick Arrival – Our team arrives promptly to inspect your system, diagnose the issue and prepare for repair.
Step 3: Same Day Fix – We Fix most water heaters the same day, restoring reliable heat and hot water to your home.
Most Common Questions About
Tankless Water Heater Repairs
What are the most common signs my tankless water heater needs repair?
Inconsistent hot water, reduced flow rate, strange noises, or error codes often indicate a problem. Water leaks or sudden bursts of cold water are also clear signs your tankless system needs attention. While the upfront installation cost may be higher than that of a traditional water heater, the long-term savings on energy bills and the extended life expectancy of tankless models make them a worthwhile investment. To provide transparency, we offer a free quote for our services so you can understand the total costs before starting the installation process. Contact us today or book online to get an accurate estimate tailored to your home’s specific needs.
Why am I getting fluctuating temperatures from my tankless system?
Temperature swings usually come from sediment buildup, a failing heat exchanger, or clogged filters. A technician can clean or replace the affected parts to restore steady hot water.
What causes low water flow from my tankless water heater?
Low flow rate is often caused by mineral buildup, blocked inlet screens, or issues with the water filter. Regular maintenance keeps the system clean and helps maintain strong, consistent water flow.
Do you offer emergency service for tankless repairs?
Yes. Real Deal HVAC provides fast emergency service for sudden hot water loss, leaks, or system shutdowns. We respond quickly so homeowners can restore reliable hot water without long delays.
How can I prevent future problems with my tankless system?
Routine maintenance, descaling, and annual inspections help keep your tankless unit running efficiently. Keeping the system clean protects the heat exchanger and ensures long-term performance and energy savings.
Comprehensive Heating and Air Conditioning Solutions
Our team specializes in heating and air conditioning solutions, including furnace maintenance and air conditioner repair. We ensure that your HVAC system operates efficiently throughout the year, providing reliable heating and cooling when you need it most. If you’re looking to improve your home comfort, our HVAC technicians can recommend upgrades or repairs tailored to your needs.
For plumbing services, we handle everything from gas line inspections to water softener and water filter installations. If you’re considering a hot water system upgrade, we can replace your traditional tank with a high-efficiency tankless unit. With decades of experience and a commitment to customer satisfaction, we provide professional solutions that deliver long-term benefits.

Our Tankless Water Heater Repair Process
Step 1: Full Systems Assessment
We begin with a complete inspection of your tankless system to identify the root cause of the issue. Our technicians carefully assess components like the heat exchanger, gas burner, and gas line to ensure nothing is overlooked.
Step 2: Component Testing & Cleaning
Next, we check for sediment buildup, hard water issues, and worn sensors that may be limiting performance. We clean or replace temperature sensors, water filters, and other affected parts to restore proper flow and efficiency.
Step 3: System Calibration & Tune-up
We inspect the pressure relief valve, confirm gas line safety, and test the hot water tap to verify steady output. Proper calibration ensures consistent hot water delivery and improves long-term energy savings.
Step 4: Final Testing & Optimization
Once repairs are complete, we run a full performance test to confirm stable water flow, reliable heating, and overall system health. Your technician ensures everything is functioning at peak performance so your home receives endless hot water with confidence.
Contact Real Deal HVAC in Toronto for Your Repair Needs
Enjoy Endless Hot Water and Energy Efficiency
When you need reliable tankless water heater repair or maintenance, trust Real Deal HVAC to deliver expert solutions in Toronto and surrounding areas. Our professional plumbers are available for same-day service, and you can easily book online to schedule a visit at your convenience. With a focus on customer satisfaction and no hidden fees, we ensure a hassle-free experience for all your water heater needs.
Don’t let water heater problems disrupt your home comfort. Contact Real Deal HVAC today for fast, efficient, and trustworthy service. Let our certified technicians handle your repairs and maintenance, so you can enjoy consistent hot water and energy efficiency throughout the year.
Book Your HVAC Service Now
Email Address:
Phone Number:
Book Your HVAC Service Now
Email Address:
Phone Number:
Book Your HVAC Service Now
Email Address:
Phone Number:
