Serving Clarington homeowners and businesses with professional tankless water heater installation, repair, and replacement services. David Cassar and his TSSA-certified team provide expert tankless water heater solutions throughout Durham Region with same-day service available.
Professional installation of new tankless water heaters for Clarington homes and businesses. From older bungalows in Bowmanville to newer subdivisions in Courtice, we handle gas line upgrades, venting, and electrical connections with TSSA-certified workmanship. Every installation comes with proper permits and warranty coverage.
Fast, reliable tankless water heater repair throughout Clarington and surrounding areas. Our technicians diagnose and fix issues like cold water bursts, error codes, ignition problems, and scale buildup. Most repairs completed same-day, and we stock parts for all major tankless brands including Navien, Rinnai, and Rheem.
Complete tankless water heater replacement services for Clarington homeowners. Whether upgrading from a tank system or replacing an aging tankless unit, we handle all aspects including removal, disposal, new unit installation, and code compliance. Perfect for older homes in Newcastle or growing families in new Clarington developments.
Comprehensive tankless water heater maintenance to extend unit life and maintain efficiency. Our service includes descaling, filter cleaning, burner inspection, and performance testing. Regular maintenance prevents costly breakdowns and keeps your warranty valid—essential for Durham Region’s hard water conditions.
Upgrade to a high-efficiency condensing tankless water heater and reduce your energy costs. Perfect for older Clarington homes looking to modernize their hot water system while qualifying for available rebates. We’ll calculate your savings potential and recommend the best unit size for your household’s needs.
24/7 emergency tankless water heater service throughout Clarington. No hot water in the middle of winter? Error codes flashing? We respond quickly to restore your hot water supply. Emergency service available for both residential and commercial properties across the Municipality of Clarington.
Clarington homeowners choose Cassar Heating & Air Conditioning for honest, professional tankless water heater services. We understand local needs—from hard water challenges to older home retrofits—and deliver solutions that work reliably for years.
A properly installed and maintained tankless water heater typically lasts 15-20 years in Ontario, significantly longer than traditional tank water heaters which average 8-12 years. The key to longevity in Durham Region is regular maintenance, especially descaling due to our moderately hard water.
Quality matters—premium brands like Navien, Rinnai, and Rheem consistently reach or exceed their expected lifespan when serviced annually. Units installed in well-ventilated areas away from harsh weather conditions tend to perform best. We’ve seen tankless units from the early 2000s still operating efficiently in Clarington homes with proper care.
The harsh Ontario winters don’t significantly impact indoor tankless units, but outdoor models require freeze protection and may have shorter lifespans. Most manufacturers offer 10-15 year warranties on heat exchangers, giving homeowners confidence in their investment.
Tankless water heater installation costs in Clarington typically range from $3,500-$8,500, depending on the unit size, complexity of installation, and any required upgrades like gas line sizing or electrical work. Simple replacements where existing gas lines and venting are adequate fall on the lower end, while whole-home retrofits requiring gas meter upgrades are higher.
Replacement units for existing tankless systems often cost $2,800-$5,200 since the infrastructure is already in place. Factor in potential rebates—Enbridge and federal programs can reduce costs by $300-$1,000 for high-efficiency models. Many Clarington homeowners see 20-30% savings on water heating costs, making the investment worthwhile over time.
Clarington’s diverse housing stock—from historic homes in Bowmanville to modern subdivisions in Courtice—presents unique tankless installation considerations. Older homes often require gas line upgrades since original lines were sized for lower-demand appliances. Many 1950s-70s homes need meter upgrades to handle tankless flow rates.
Newer developments in areas like Hampton and Orono typically have adequate gas infrastructure, making installations more straightforward. Basement installations are common, but we often recommend utility room locations to minimize noise and allow easier servicing. Rural Clarington properties on propane can benefit significantly from high-efficiency tankless units due to lower fuel consumption.
Cold water bursts during showers are the most common complaint we hear from Clarington homeowners—usually indicating scale buildup, ignition issues, or insufficient gas supply. Error codes on the display should never be ignored, as they provide specific diagnostic information that helps us identify problems quickly.
Reduced hot water flow, especially when multiple fixtures run simultaneously, often means the heat exchanger needs descaling or the gas pressure requires adjustment. Strange noises, particularly rumbling or popping sounds, typically indicate scale accumulation or combustion issues requiring professional attention.
Higher gas bills without increased usage can signal reduced efficiency from maintenance neglect. Annual service prevents most issues and keeps units running at peak efficiency throughout Durham Region’s demanding heating season.
Durham Region’s variable water temperatures—from near-freezing in January to warm in summer—affect tankless water heater performance more than many homeowners realize. Units work harder in winter when incoming water is coldest, potentially reducing efficiency and increasing wear on components.
Our moderately hard water (150-250 ppm) requires attention but isn’t as aggressive as some Ontario regions. Annual descaling prevents scale buildup that reduces efficiency and shortens component life. We recommend water softening for homes with very hard well water to maximize tankless unit longevity.
Proper venting is crucial during Durham’s humid summers to prevent condensation issues, while winter freeze protection ensures reliable operation during extended cold periods. Indoor installations in conditioned spaces perform most reliably year-round.
Modern tankless water heaters include multiple safety features—flame sensors, overheat protection, and automatic shutoffs—but proper installation and maintenance are essential. TSSA certification ensures installations meet Ontario safety codes, particularly for gas connections and venting requirements.
Carbon monoxide protection is built into quality units, but we always recommend CO detectors near any gas appliance. Proper clearances for combustion air and venting prevent safety issues and ensure efficient operation. Regular maintenance checks verify all safety systems function correctly.
Efficiency ratings of 90%+ on condensing models significantly reduce energy costs compared to storage tank systems. Smart controls and modulating burners adjust output to demand, maximizing efficiency across all usage patterns typical in Ontario homes.
Before calling for service, try these quick troubleshooting steps that often restore hot water immediately.
Tankless units have self-diagnostic displays. Write down the error code and call Cassar — this tells us exactly what’s wrong before we arrive.
There’s a small mesh filter screen on the cold water inlet that catches debris. It blocks up over time and restricts flow enough to prevent ignition.
Make sure the gas shutoff valve behind the unit is fully open. It can get partially closed during other work in the utility area.
Running multiple hot water fixtures simultaneously can exceed the unit’s flow capacity, causing a cold burst. Try running one fixture at a time to test.
Tankless units vent through the wall or roof. Check that the intake and exhaust pipes are clear, undamaged, and properly connected.
If none of the above restore your tankless water heater, it’s time for a licensed technician. David and his crew serve all of Durham Region and respond fast.
“David installed our new Navien tankless water heater in our Courtice home last month. Professional work, fair price, and now we have endless hot water for our family of five. He explained everything clearly and left the area spotless.”
“Called Cassar when our tankless unit started showing error codes. David diagnosed the problem quickly—needed descaling due to hard water buildup. Fixed same day, runs like new again. Great service throughout Clarington.”
“Outstanding tankless water heater replacement service for our older Bowmanville home. David upgraded the gas line and handled all the permits. Honest pricing, quality work, and our energy bills are already lower.”
Professional tankless water heater installation, repair, and replacement throughout Durham Region.
Same-day service available. TSSA certified. Honest pricing. Call or book online.
