Port Perry’s mix of lakeside cottages converted to year-round homes, older in-town bungalows along Water Street, and newer builds in the Scugog subdivisions means David sees every kind of water heater setup imaginable, and a lot of tanks that are well overdue for a switch to tankless. David covers all of Port Perry and the Township of Scugog, with same-day and emergency availability when you can’t afford to wait.
Every job below is something David handles personally, from the initial quote through to cleanup.
David sizes the unit correctly for your home’s actual hot water demand before anything gets ordered. Port Perry’s older downtown homes often have smaller gas lines that need upgrading to handle a tankless unit’s BTU draw, and David factors that into your quote from the start. You won’t get a surprise invoice after the job’s done.
Error codes, ignition failures, fluctuating temperatures, or a unit that fires briefly then cuts out, David diagnoses the actual fault instead of guessing. He carries common replacement parts, which means most repairs wrap up in a single visit rather than dragging into a second appointment.
If your existing tankless unit is past its serviceable life, David’ll tell you straight, repair costs, age, and parts availability all factor into that advice. He won’t push a replacement if a repair makes more sense financially, and he won’t recommend a repair that’s just delaying the inevitable. You get an honest assessment, not a sales pitch.
A yearly flush removes the mineral scale that builds up inside the heat exchanger, Port Perry draws on well water in many rural parts of the Township of Scugog, and well water tends to be harder than municipal supply, so this isn’t optional if you want the unit to last. David also inspects the burner, venting, and filter screen during every maintenance visit.
Switching from a standard tank or an older tankless unit to a condensing 96%+ AFUE model can cut your water heating costs noticeably on a monthly basis. David walks you through which models make sense for your household size and usage patterns, and he’ll confirm whether your venting setup needs to change before anything’s ordered.
When the hot water goes out on a February morning in Port Perry, you’re calling for help, not reading reviews. David answers his own phone, and he covers all of the Township of Scugog for emergency calls. He’ll give you an honest read on what’s wrong and what it’ll cost before he starts anything.
I’ve been doing tankless installs and repairs across Port Perry and the Township of Scugog since 2011, and the homes here throw a wider range of situations at me than almost anywhere else in Durham Region, everything from century-old in-town properties where the utility room is the size of a closet, to rural properties on well water where scale builds up faster than most homeowners expect. When you call, you’re talking to me, and I’m the one who shows up and does the work.
A well-maintained tankless water heater will typically run for 18 to 22 years in an Ontario home. That’s roughly double the lifespan of a standard storage tank, and it’s one of the main reasons the upfront cost of going tankless makes sense over the long run. The key word is maintained, units that never get serviced tend to fall apart significantly earlier because scale builds up inside the heat exchanger and forces the burner to work harder than it’s designed to.
What shortens that lifespan most consistently is hard water and neglect. Ontario’s groundwater, particularly across Durham Region and rural parts of the Township of Scugog, carries enough dissolved calcium and magnesium to noticeably scale up a heat exchanger within a couple of years without a flush. An annual descale with a vinegar or citric acid solution keeps the exchanger transferring heat efficiently and avoids the kind of damage that voids warranties and ends units prematurely.
The other factor is venting. Condensing tankless units vent through PVC, and if the pipe connections loosen or the exterior termination cap gets blocked by a bird nest or ice in winter, the unit’s safety controls will shut it down. Ontario winters are hard on exterior venting terminations, so a quick visual check each fall is worth doing.
A straightforward tankless water heater installation in Port Perry, where you’re replacing an existing tankless unit with a similarly sized model and the gas line, venting, and electrical are already in the right place, typically runs between $2,800 and $4,200 installed, depending on the brand and BTU rating you choose. That range covers the unit, labour, and any standard fittings. A condensing high-efficiency model sits at the upper end of that range but tends to pay back the difference in gas savings within a few years.
The cost goes up when there’s additional work involved. Upgrading from a tank to a tankless unit often means rerouting the gas line to a larger diameter, which adds $300 to $800 depending on the distance. Venting changes add cost too, especially if you’re going from a natural-draft tank to a direct-vent condensing tankless that needs new PVC through the wall. In older Port Perry homes where the utility room is tucked into a tight space, there’s sometimes extra labour involved just in the routing.
Repairs are a much smaller spend. A heat exchanger flush runs around $150 to $250. Igniter replacements, flow sensor swaps, and gas valve repairs typically fall between $200 and $600 in parts and labour. The best way to know what your specific job will cost is to get a free quote from David, no pressure, no obligation.
Port Perry’s housing stock is more varied than many parts of Durham Region. The historic downtown core along Queen Street has homes built from the 1880s through to the mid-1900s, many of them two-storey brick or frame houses with utility areas that were retrofitted long after construction. These homes can present real challenges for tankless installs: the gas supply lines were sized for old equipment, the electrical panel sometimes needs an upgrade to handle a tankless unit’s ignition requirements, and finding a compliant venting path through older construction takes more thought than a modern build.
Further out from the core, Port Perry has a substantial number of rural properties and lakeside homes on Lake Scugog that were originally seasonal cottages and have since been converted to year-round residences. These properties are very often on well water, and well water in this part of Durham Region tends to be significantly harder than the municipal supply. Hard water accelerates scale buildup inside a tankless heat exchanger, and David recommends a descale every 12 months rather than every two years for homes drawing on a well. A water softener upstream of the tankless unit extends its life considerably in these situations.
The newer subdivisions in the Scugog area built from the 2000s onward are generally easier installs, the gas infrastructure is modern, there’s usually a dedicated mechanical room, and the venting path to an exterior wall is straightforward. Even in these homes, though, David always does a proper load calculation before recommending a unit size rather than just replacing like-for-like, because the original builder-installed equipment is sometimes undersized for how families actually use the home.
The most obvious signal is an error code on the unit’s display panel. Modern tankless heaters are self-diagnosing, and the code tells you, and David, a great deal about what’s actually wrong before anyone opens the unit up. Writing down that code before you call saves time on both ends. Common codes relate to ignition failure, flame sensing errors, water flow issues, and overheat shutdowns, each of which points to a different component.
Fluctuating water temperature during a shower, where the water goes cold briefly and then recovers, sometimes called the “cold water sandwich”, is one of the most common complaints David hears from Port Perry homeowners with tankless units. It’s usually a flow sensor that’s reading sluggishly because of scale, or a unit that’s fighting against a partially blocked inlet filter. In homes on well water in the Township of Scugog, a scaled-up heat exchanger is a very common cause of this symptom, and it’s entirely fixable with a proper flush.
Other signs worth acting on promptly: the unit takes noticeably longer to deliver hot water than it used to; you’re hearing unusual clicking or rumbling from inside the unit during operation; the pilot won’t stay lit; or you’re seeing a drop in water pressure only at the hot side. Any of these warrant a call rather than waiting to see if they resolve on their own, because minor issues in a tankless unit tend to compound when they’re left unaddressed.
Durham Region’s winters are genuinely cold, and that matters for tankless operation in a couple of ways. The groundwater temperature in January in this part of Ontario sits around 4 to 6 degrees Celsius. A tankless unit has to raise that incoming water all the way to your target output temperature in one pass, and the colder the incoming water, the harder the unit works. This is why undersized units struggle in Ontario winters, a unit that performs adequately in July can run flat out and still not quite hit your target temperature on the coldest days in January if it wasn’t specified correctly for the local groundwater temperature range.
Protecting the exterior venting is something Port Perry homeowners with homes closer to the lake should pay attention to. Wind-driven snow and ice can partially block termination caps, and a condensing unit’s exhaust produces water vapour that can freeze at the pipe exit on very cold nights. A quick visual check of the vent termination after a significant ice storm or blowing snow event can catch a blockage before the unit shuts itself down on a cold morning.
In the fall, if your home has any outdoor or garage-mounted piping feeding the tankless unit, David’ll let you know whether any freeze protection measures apply to your specific setup. Most tankless units have internal freeze protection down to a certain temperature, but that only protects the unit itself, not the supply lines leading to it if they’re in an unheated space.
In Ontario, any gas appliance work, including tankless water heater installation and replacement, requires a TSSA-licensed technician. This isn’t a formality. The TSSA licence means the technician has demonstrated knowledge of gas code requirements, safe venting practices, and combustion safety. David’s licence number is #000398183, and you can verify it directly on the TSSA website before you book. If a contractor can’t give you a licence number, they shouldn’t be touching your gas appliances.
Carbon monoxide is the primary safety concern with any gas water heater. A properly installed and maintained tankless unit with correct venting carries minimal CO risk, the combustion gases exhaust entirely to the outside. Problems arise when the venting is improperly installed, deteriorates over time, or gets blocked. David checks the entire venting run as part of every installation and service call, not just the unit itself. Every home with a gas appliance should have a working CO detector on each level, regardless of how new or well-maintained the equipment is.
On the efficiency side, the Canada Greener Homes Grant program has offered rebates on qualifying high-efficiency water heaters in recent years. Eligibility and rebate amounts change, so David’ll confirm what’s currently available when you’re planning an installation. Choosing a condensing tankless unit with a high Energy Factor rating maximises both the rebate potential and your long-term monthly savings on natural gas.
Checking the simple things before calling saves time for everyone, here’s where to start.
Tankless units have self-diagnostic displays. Write down the error code and call Cassar, this tells us exactly what’s wrong before we arrive and often cuts the diagnostic time in half.
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. It’s easy to pull out, rinse, and reinstall, worth checking before anything else.
Make sure the gas shutoff valve behind the unit is fully open. It can get partially closed during other work in the utility area, and a partially open valve will cause ignition failures or weak flame errors that look like a unit fault.
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. If the unit performs fine solo but struggles with simultaneous demand, a capacity upgrade may be the right call.
Tankless units vent through the wall or roof. Check that the intake and exhaust pipes are clear, undamaged, and properly connected. In Port Perry winters, ice can partially block the termination cap after a significant cold snap, a look from outside takes thirty seconds.
If none of the above gets it going, it needs a licensed technician. David serves all of Port Perry and Durham Region and picks up the phone himself.
Yes, for most Durham Region homeowners, including those in Port Perry and the Township of Scugog, a tankless unit makes clear financial sense over the life of the equipment. A modern condensing tankless heater operates at 94 to 96% efficiency compared to the 60 to 70% efficiency of an aging storage tank, and that gap shows up on your gas bill every month. The payback period on the upfront cost difference is typically six to ten years depending on your household’s hot water usage, and the unit itself will outlast two or three tanks in the same period. There’s also the space savings, which matters in Port Perry’s older homes where the utility room is often limited. On well water, the case for tankless is just as strong, but you’ll want to commit to annual maintenance, because hard groundwater in this part of Durham Region will scale a heat exchanger faster than municipal water does. If your current tank is getting toward the end of its life, switching to tankless at replacement time rather than replacing tank-for-tank is almost always the smarter move.
For a standard tankless installation in Durham Region, swapping out an existing tankless or switching from a tank where the gas line and venting are already workable, the total installed cost typically runs between $2,800 and $4,500. That range reflects differences in unit size and brand, not hidden charges added after the fact. At the lower end, you’re looking at a mid-range non-condensing unit in a straightforward install. At the upper end, a high-efficiency condensing model in a home that needs a gas line upsized or new PVC venting run through the wall. In Port Perry specifically, older in-town homes and converted lake cottages more often fall toward the higher end because of the additional work involved in routing gas and venting through older construction. New subdivision builds are generally simpler. Repairs cost considerably less, a heat exchanger flush runs $150 to $250, and most part replacements fall between $200 and $600 all in. The best way to know what your specific job will cost is to get a free quote from David, no pressure, no obligation.
It depends on the unit’s flow rate capacity, and getting that sizing right before installation is the whole game. Tankless water heaters are rated in gallons per minute (GPM) at a given temperature rise. A standard shower uses roughly 1.5 to 2 GPM. Two showers running simultaneously need a unit capable of delivering at least 3 to 4 GPM at Ontario’s winter groundwater temperatures, which are genuinely cold. A unit that’s just barely adequate in July will struggle in January when the incoming cold water is closer to 4 degrees Celsius rather than 10. This is why David calculates your actual peak demand rather than just replacing like-for-like. If your current unit runs out of capacity with two showers going, it was either undersized to begin with or your family’s usage has grown. The fix might be a larger unit, or it might be two smaller units plumbed in parallel for larger households. David’ll work through the right solution for your specific home before anything gets ordered.
Most tankless water heaters, especially high-BTU condensing units, need a larger gas supply line than a standard storage tank does. A typical storage tank runs on a half-inch gas line. A tankless unit rated at 199,000 BTU generally needs a three-quarter-inch line, and in some cases a one-inch line depending on the total length of run from the meter. In Port Perry’s older homes, where the gas infrastructure was often installed decades ago for lower-capacity appliances, this upgrade is more common than not. David checks the gas line size, the meter capacity, and the total BTU load of all connected appliances before confirming what’s needed. The cost to upsize a gas line typically runs $300 to $800 depending on the distance and any access complications in the wall or floor. This cost is included in your upfront quote, not added afterward as a surprise. Gas line work in Ontario must be done by a TSSA-licensed technician, which David is, licence #000398183.
A tankless installation where everything goes to plan, right unit on the truck, gas line already the correct size, venting route straightforward, takes three to five hours from start to cleanup. More complex installs, like a full switch from a tank in a Port Perry heritage home where the utility room requires creative routing, or any job that involves a gas line upsize and new venting penetration through the wall, can run six to eight hours. David schedules appropriately for what your specific situation looks like, so he’s not rushing at the end of the day. He’ll give you a realistic time window when he quotes the job, not an optimistic number that turns into an all-day surprise. In most cases you’ll have hot water the same day the installation takes place, David doesn’t leave a job with a non-functional system at the end of the visit.
Cold water from a tankless unit usually comes down to one of four things: ignition failure, a flow sensor that’s not reading correctly, a heavily scaled heat exchanger that can’t transfer enough heat, or a unit that’s being asked for more flow than it can handle. In Port Perry and the Township of Scugog, where many homes draw on well water, a scaled heat exchanger is the most common culprit David finds on service calls, the unit fires, but the scale buildup means the water isn’t getting heated efficiently, so it comes out lukewarm or cool. The fix is a proper descale flush. Ignition failure shows up as an error code on the display and usually points to the igniter, flame rod, or gas valve. A flow sensor issue often causes the unit to short-cycle, it fires briefly, then shuts off, producing that cold-warm-cold pattern in the shower. Any of these warrant a service call rather than waiting it out, because running the unit in a compromised state tends to cause secondary damage over time.
Once a year is the right interval for most Ontario homes, and more frequently if you’re on well water in the Township of Scugog. A yearly service visit covers a heat exchanger flush to remove mineral scale, an inspection of the burner assembly, a check of the inlet filter screen, a test of the pressure relief valve, and a look at the venting connections inside and outside the home. For homes on hard well water, David recommends a flush every 12 months without exception, skipping it accelerates scale buildup to the point where heat exchanger damage becomes a real risk within a few years. For homes on softer municipal water, some manufacturers allow up to 24 months between flushes, but annual maintenance still makes sense because you’re also catching venting issues, filter blockages, and minor faults before they become expensive failures. Maintenance costs far less than a premature replacement.
David works on all the major tankless brands sold in Ontario, Navien, Rinnai, Noritz, Bradford White, Rheem, AO Smith, Bosch, and others. He’s not tied to a single supplier or brand, which means when he recommends a unit, it’s because it suits your home and usage pattern, not because he gets a better margin on one brand over another. For repairs, David carries common replacement parts for the most frequently serviced models, which is why most repair calls wrap up in one visit. If a part needs to be ordered for a less common unit, he’ll tell you upfront how long that’ll take and what it’ll cost before any work starts. If you already have a specific brand installed and need repair or maintenance, just let David know the make and model when you call, it helps him come prepared with the right parts and tools for your unit.
“Our tankless unit stopped firing on a Thursday morning in January. David had it diagnosed and running again the same afternoon, turned out to be a failed flame sensor.”
“I called about replacing our old tank with a tankless unit and David picked up right away. He came out, looked at our setup, we’re on a well out on a rural road in Scugog Township, and was upfront that we’d need a gas line upsized and that our hard water meant we’d need to flush it every year. No surprises on the invoice, everything came in exactly where he said it would.”
“Punctual, tidy, and the price matched the quote exactly. He put down covers before he started and took all the packaging when he left. My utility room actually looked cleaner after than before he arrived.”
David covers all of Durham Region, here are the other communities he serves for tankless water heater work.
Same-day service available. TSSA certified. Honest pricing. Call or book online.
