Ajax homeowners trust Cassar for expert tankless water heater service throughout the Town of Ajax, from the Village to downtown Ajax. Our TSSA-certified team provides same-day service across Durham Region with honest pricing and reliable repairs.
New tankless installation for Ajax homes, from the established neighbourhoods near Highway 401 to newer subdivisions like Williamsburg. We handle gas line upgrades, venting, and permits to get your energy-efficient tankless system running properly. TSSA-certified installation with upfront pricing.
Fast tankless repair service throughout Ajax when your unit stops heating, displays error codes, or produces inconsistent water temperature. Our diagnostic expertise gets to the root cause quickly — from ignition problems to scale buildup common in Ajax’s water supply.
Complete tankless replacement when your aging unit becomes unreliable or inefficient. We recommend the right size for your Ajax home’s hot water demand and upgrade to current high-efficiency models. Professional removal of old units and proper disposal.
Annual tankless maintenance to prevent problems before they start. We flush the heat exchanger, inspect venting, check gas connections, and clean the inlet filter. Regular maintenance keeps your tankless running efficiently through Ontario’s demanding winters.
Upgrade from older tankless models to the latest high-efficiency condensing units. These units capture more heat from exhaust gases and can achieve 95%+ efficiency ratings. We’ll calculate the energy savings for your specific situation and usage patterns.
Emergency tankless service when your unit fails completely in Ajax. We respond fast to restore hot water, especially critical during winter months. Our service truck carries common repair parts for most tankless brands to get your hot water restored the same day.
Ajax homeowners choose Cassar for tankless water heater service because we provide the honest, reliable expertise that busy families need. When your tankless stops working or needs professional installation, we get the job done right the first time.
A properly installed and maintained tankless water heater typically lasts 15-20 years in Ontario’s climate, compared to 8-12 years for conventional tank water heaters. The key factors affecting lifespan are water quality, maintenance frequency, and proper sizing for your home’s demand.
Ajax’s municipal water is relatively hard, which means mineral buildup can reduce efficiency over time if the unit isn’t flushed annually. Regular maintenance extends the life significantly — we’ve seen well-maintained units still running efficiently after 18+ years. The electronic components and heat exchangers are designed for longevity, but they need proper care.
Tankless installation in Ajax typically ranges from $3,500 to $7,500 depending on the unit size, gas line requirements, and venting complexity. High-efficiency condensing models cost more upfront but provide better long-term savings through lower gas bills.
The biggest variable is often gas line upgrades — older Ajax homes may need larger gas lines to supply adequate BTU capacity for tankless operation. Venting requirements also vary based on your home’s layout and the unit’s location. A proper assessment determines the exact scope and cost for your specific situation.
Ajax has a mix of housing styles that affect tankless installation — from 1960s-70s bungalows in established neighbourhoods to newer two-storey homes in subdivisions like Williamsburg Village. Older homes often need electrical upgrades for the tankless control unit and may have undersized gas lines that require upgrading.
The proximity to Lake Ontario moderates Ajax’s climate slightly, but winter demand for hot water is still high. Proper sizing is critical — a unit too small won’t keep up during peak demand periods when multiple fixtures run simultaneously in busy family homes.
Watch for these warning signs that indicate your tankless needs professional service: inconsistent water temperature during use, error codes appearing on the display panel, unusual noises during operation, or reduced hot water flow rate compared to normal operation.
In Ajax’s water conditions, scale buildup is common and shows up as longer delay times before hot water arrives, or the unit cycling on and off during continuous use. If you notice a rotten egg smell, this could indicate a gas leak or combustion problem that requires immediate attention from a licensed technician.
Don’t ignore minor issues — they typically worsen over time and lead to more expensive repairs. Early intervention often prevents complete system failure and the inconvenience of being without hot water during repairs.
Durham Region’s winter temperatures can affect tankless performance, particularly for outdoor installations or units with external venting. When ambient temperatures drop below -15°C, some units may struggle to maintain consistent output without proper freeze protection.
Indoor installations are preferred in our climate, but proper venting through exterior walls is critical. We ensure intake and exhaust pipes are properly insulated and positioned to prevent ice buildup that can restrict airflow and trigger safety shutdowns.
Modern tankless units achieve 80-95% efficiency ratings, compared to 60-75% for older tank water heaters. Condensing models capture heat from exhaust gases that would otherwise be wasted, achieving the highest efficiency ratings but requiring proper condensate drainage.
Safety features include flame sensors, overheat protection, and freeze protection systems. All units must be installed according to Ontario Building Code requirements with proper clearances, venting, and gas connections. TSSA inspection ensures compliance with provincial safety standards for gas appliances.
Check these common issues before calling for service — you might restore hot water yourself.
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 Navien tankless last month and we couldn’t be happier. No more running out of hot water when the kids take long showers. The installation was clean and professional, and he explained everything clearly.”
“Our tankless stopped working on a Saturday morning and David came out the same day. Quick diagnosis and had the part in his truck. Great to find reliable service in Ajax that doesn’t overcharge for weekend calls.”
“Cassar upgraded our gas line and installed a high-efficiency tankless to replace our old 40-gallon tank. The energy savings are noticeable and we love the extra space in the utility room. Highly recommend for Ajax homeowners.”
We provide professional tankless water heater installation, repair, and replacement throughout Durham Region.
Same-day service available. TSSA certified. Honest pricing. Call or book online.
