Port Perry’s mix of century-era village homes, lakefront properties on Scugog Island, and newer subdivisions off Simcoe Street means no two air conditioner jobs are quite the same, and sizing or replacing without accounting for those differences is where most mistakes happen. David covers all of Port Perry and the Township of Scugog, and he picks up when you call.
Every job below is something David handles personally, start to finish, across Port Perry and the Township of Scugog.
David sizes every new installation to the actual home, not a rule of thumb. Port Perry’s older village homes often have smaller duct systems that can’t handle the airflow demands of an oversized unit. Get the load calculation done right the first time.
If your AC stopped cooling or it’s running constantly without dropping the temperature, David diagnoses the problem on the first visit. He stocks common parts on the truck so most repairs in Port Perry wrap up the same day he arrives.
When a repair no longer makes financial sense, David replaces the unit and explains exactly why before touching anything. He won’t recommend replacement on a system that’s got a few good years left just to sell equipment.
A spring tune-up catches refrigerant issues, dirty coils, and worn electrical contacts before they strand you on a 35-degree July afternoon. David checks everything that matters and tells you what he found, not just what he did.
Upgrading from a SEER 13 unit to a SEER 18 or higher can cut your summer cooling costs noticeably, and current Ontario rebate programs may offset part of the equipment cost. David walks you through what’s available and what makes sense for your home’s setup.
When the AC fails on a humid August night, you need someone who picks up the phone, not a voicemail box. David takes emergency calls across Port Perry and the Township of Scugog and gets there as fast as the drive from Durham Region allows.
I’ve worked in Port Perry since 2011, and I’ve seen the full range of what’s out here: original knob-and-tube homes near the harbour that need careful duct assessment before any new equipment goes in, lakefront cottages that get converted to year-round use, and the newer builds off Paxton Road that often got undersized equipment at construction. Every one of those jobs needs a different approach, and I figure that out before I quote you anything.
A central air conditioner in Ontario typically lasts between 15 and 20 years, though the actual number depends heavily on how well it’s been maintained and how hard it runs each summer. A unit that gets a proper coil cleaning and refrigerant check every spring will consistently outlast one that runs ignored for a decade. Ontario’s climate pushes AC systems hard, the swing from a damp, cool May to a 35-degree humid August puts real mechanical stress on compressors and fan motors.
What shortens lifespan faster than anything else is restricted airflow. A filter that goes six months without replacement, a condenser coil packed with cottonwood fluff or grass clippings, or a return air duct that’s been blocked by furniture all force the compressor to work harder than it was designed to. Compressor replacements on older units often cost more than a new system, so catching airflow problems early matters.
In Durham Region’s climate, the shoulder season also plays a role. Running your AC in October when overnight temperatures drop below 15°C can cause refrigerant pressure issues and compressor damage. If you’re seeing frost on the refrigerant lines in cool weather, shut the system off and call David before running it again.
A standard central air conditioner replacement in Port Perry, including removal of the old unit, installation of a new 2- to 3-ton system, and all labour, typically runs between $3,500 and $6,500 depending on the efficiency rating you choose and whether any refrigerant line or electrical work is needed. Higher-efficiency units (SEER 18 and above) sit at the top of that range but cost less to run each month. Repairs are more variable: a capacitor swap might be $150 to $250, while a refrigerant recharge plus leak diagnosis can run $400 to $700.
The biggest variable on installation cost is what the existing setup looks like. If the refrigerant lines are old and corroded, or if the electrical disconnect and breaker need upgrading to match the new equipment, those add to the total. David identifies every one of those factors before quoting, so you’re not getting a low number that climbs once he’s already there.
The best way to know exactly what your job will cost is to get a free quote from David, no pressure, no obligation.
Port Perry has one of the more varied housing stocks in Durham Region. The older homes along Queen Street and near Lake Scugog, many built between the 1880s and the 1950s, were designed with natural ventilation in mind, not forced-air cooling. When central AC gets added to these homes, the duct systems are often retrofitted and frequently undersized for the square footage being cooled. Running a standard-sized unit through undersized ducts creates high static pressure that stresses the blower motor and limits how well the system actually cools.
The lakefront and waterfront properties around Scugog Island present a different challenge. Humidity off the lake runs higher than inland, which means dehumidification capacity matters as much as temperature control. A unit that cools the house to 22°C but leaves it feeling clammy at 65% relative humidity isn’t doing the full job. David factors in humidity load when sizing for these properties.
Port Perry’s newer subdivisions, the developments that went up through the 2000s and 2010s on the north and west edges of the village, are typically well-suited for standard central AC, but David’s seen more than a few where the builder spec’d equipment at the low end of capacity to keep construction costs down. If your relatively new home still struggles to keep up on hot days, the original equipment may simply be undersized for the actual floor plan.
The most obvious sign is that the house isn’t reaching the thermostat setpoint on a hot day, but there are earlier warning signs worth catching. If the AC is running in longer and longer cycles to hold the same temperature, it’s losing efficiency, usually because of dirty coils, low refrigerant, or a failing compressor. If you’re noticing ice on the refrigerant line near the indoor air handler, that’s a blocked filter or low refrigerant causing the evaporator coil to freeze over, and running the system that way damages the compressor.
Unusual sounds are another signal. A rattling outdoor unit often means a loose fan blade or debris inside the cabinet. A grinding or squealing sound from the indoor air handler usually points to a failing blower motor bearing. Neither gets better on its own. The longer you run a system with a mechanical problem, the more expensive the eventual repair tends to be.
In Port Perry and across Durham Region, cottonwood season in late May and June is notorious for packing condenser coils solid in a matter of weeks. If you’ve got mature cottonwood trees near your outdoor unit and you haven’t had the coil cleaned, that’s worth checking before the serious heat hits. A blocked condenser coil can push head pressure high enough to trip the high-pressure safety, which shuts the whole system off.
Durham Region’s summer pattern typically runs from late June through early September, with the most intense heat concentrated in July and early August. The humidity during that window is the main challenge, a well-maintained system with the right refrigerant charge and a clean coil handles the cooling side fine, but if the unit isn’t sized correctly or the filter is restricting airflow, you’ll feel it on the worst days of the summer.
The single most effective thing Port Perry homeowners can do is replace the furnace filter every 60 to 90 days through the cooling season. The central AC uses the same blower and ductwork as the furnace, and a clogged filter chokes the airflow the evaporator coil needs to function. A fresh filter costs a few dollars. A new evaporator coil costs considerably more.
Keeping blinds or curtains closed on south and west-facing windows during afternoon peak heat reduces the cooling load significantly, especially in Port Perry’s older homes where wall insulation is minimal. Running a ceiling fan in occupied rooms lets you hold the thermostat a degree or two higher without feeling warmer, which takes meaningful load off the compressor over a full summer.
Air conditioning work in Ontario falls under TSSA regulation when it involves refrigerants and pressurized systems. Anyone handling refrigerant is required to hold the appropriate certification, and TSSA-licensed contractors like Cassar are accountable for their work in a way that unlicensed operators are not. David’s licence number is #000398183, you can verify it directly with the TSSA. That matters because refrigerant work done incorrectly can cause equipment damage, void manufacturer warranties, and create safety hazards.
On the efficiency side, Ontario’s Enbridge and Hydro One rebate programs have periodically offered incentives for upgrading to higher-SEER equipment, and the Canada Greener Homes Grant has covered heat pump upgrades specifically. The availability of these programs changes, so David checks what’s current when he’s quoting a replacement. If there’s money on the table, he’ll tell you.
For homeowners considering a switch to a heat pump instead of a traditional air conditioner, it’s worth knowing that a cold-climate heat pump handles both cooling and heating, which makes it a meaningful efficiency upgrade for Port Perry homes that are also looking at furnace replacement in the same window. David installs both and can walk you through where the numbers land for your specific home.
Checking the simple things before calling saves time for everyone, here’s where to start.
Make sure it’s set to Cool and the temperature is set below current room temperature. Check the batteries too, a weak battery causes erratic thermostat behaviour.
Your AC has a breaker in the main panel and an exterior disconnect box next to the outdoor unit. Check both are on.
A clogged filter blocks airflow and causes the evaporator coil to ice up, completely stopping cooling. Replace the filter and let the unit thaw for an hour before restarting.
The condenser unit outside needs clear airflow. Remove any debris, overgrowth, or objects within 60cm of the unit. Don’t hose it down while running.
Closed vents create pressure imbalances that reduce cooling and can damage the system. Make sure every supply vent in the home is open.
If none of the above fixes it, the system needs a licensed technician. David serves all of Durham Region and picks up the phone.
Once a year, ideally in the spring before the cooling season starts. A proper tune-up covers the refrigerant charge, coil cleaning, electrical connections, capacitor condition, and fan motor operation. In Port Perry specifically, cottonwood season runs through May and June and packs condenser coils quickly, so getting the service done in April means the coil is clean before that hits. Skipping a year or two of maintenance doesn’t cause immediate failure, but it lets small problems develop into bigger ones, a low refrigerant charge that’s ignored for two seasons eventually causes compressor damage, and compressor replacements are expensive. If you’ve bought a home in Port Perry and you’re not sure when the AC was last serviced, that’s a good reason to book a tune-up before you rely on it.
The most common causes are a clogged air filter, low refrigerant from a leak, a dirty condenser coil, or a failing compressor. Start with the filter, if it’s grey and blocked, replace it, let the system run for an hour, and see if cooling improves. If the filter’s fine, check whether the outdoor unit is running at all. If the outdoor unit is running but the air coming from the vents isn’t cold, low refrigerant or a dirty coil is likely. If the outdoor unit isn’t running, the compressor or capacitor may have failed, or the breaker tripped. Refrigerant issues and electrical failures need a technician. Don’t keep running the system if you see ice on the refrigerant line, that makes the problem worse. Call David and he’ll diagnose it on the first visit.
A standard central air conditioner installation, removing the old unit and installing a new one on an existing forced-air system with existing refrigerant lines, typically takes four to six hours. If the refrigerant lines need replacement, the electrical disconnect needs upgrading, or there are complications with the existing ductwork, it can run a full day. David schedules Port Perry installations with enough time to do the job properly rather than rushing to fit in another appointment. He won’t leave until the system is running, tested, and the refrigerant charge is confirmed correct. You won’t come home to an unfinished job or a system that hasn’t been commissioned.
The honest answer depends on the age of the system, what’s broken, and what the repair costs relative to a replacement. A good rule of thumb: if the repair cost is more than 50% of a new system’s price and the unit is over 12 years old, replacement usually makes better financial sense. A compressor failure on a 16-year-old R-22 system is almost always a replacement situation, because R-22 refrigerant is now expensive and restricted, and the system’s remaining lifespan doesn’t justify the cost. But a capacitor or contactor failure on a 10-year-old R-410A system is almost always worth repairing. David gives you that calculation straight, he won’t push replacement if repair makes sense, and he won’t paper over a serious problem with a band-aid repair. The best way to know what your specific job will cost is to get a free quote from David, no pressure, no obligation.
SEER 16 is the practical minimum worth installing in Durham Region today, and SEER 18 to SEER 20 is where the efficiency gains start paying back meaningfully over a system’s lifespan. The minimum allowed in Canada is SEER 13, but that’s a low bar, a SEER 18 unit uses roughly 28% less electricity for the same cooling output. In Durham Region, where summer cooling seasons run three to four months and can include weeks of sustained heat above 30°C, the savings add up. Higher-SEER units also tend to include variable-speed compressors, which modulate output instead of cycling fully on and off. That improves humidity control, which matters particularly for Port Perry’s lakefront properties and the older homes where building envelopes aren’t airtight. The best way to know what your specific job will cost is to get a free quote from David, no pressure, no obligation.
If the system is running, both the indoor blower and the outdoor unit, but the air coming from the vents is warm or barely cool, the most likely causes are low refrigerant, a dirty condenser coil, or a failing compressor. Check the outdoor unit: if the large copper refrigerant line coming from the top of the unit is not cold to the touch, refrigerant is low. If the outdoor unit is hot to the touch and the condenser coil looks packed with debris or cottonwood fluff, restricted airflow is the issue. A dirty coil blocks heat rejection and forces head pressure up until the high-pressure safety shuts the compressor down. Neither problem resolves itself. Don’t keep running the system hoping it’ll sort out, call David and he’ll get the right diagnosis on the first visit.
Yes. David services and repairs all major residential AC brands, including Carrier, Lennox, Trane, York, Goodman, Ruud, Rheem, American Standard, Bryant, and others. The diagnostic process and the components that fail, capacitors, contactors, fan motors, control boards, refrigerant circuits, are similar across brands. David carries common replacement parts on the truck to avoid leaving Port Perry homeowners waiting for a parts order on a hot day. For installations and replacements, he works with equipment from manufacturers he trusts for reliability and parts availability, and he’ll tell you which brands he’s seen hold up well and which ones he’d avoid.
Yes, financing options are available for air conditioner installation across Durham Region, including Port Perry and the Township of Scugog. A new central AC system is a meaningful expense, and spreading the cost over monthly payments makes it manageable without putting off a replacement that’s already overdue. David can walk you through what’s available when he quotes the job. Separately, if you’re replacing an older system with a qualifying high-efficiency unit or heat pump, Ontario rebate programs and the Canada Greener Homes initiative may reduce the net cost. David checks what’s currently active and applicable to your equipment choice before finalizing the quote. The best way to know what your specific job will cost is to get a free quote from David, no pressure, no obligation.
“Our AC died on the hottest weekend of the summer. David had it repaired and running the same day, blown capacitor, fixed in under an hour.”
“I called David about our AC struggling to cool the second floor. He came out, found the condenser coil was completely packed with cottonwood, cleaned it out, and the difference was immediate. He also pointed out the refrigerant was slightly low and topped it up while he was here. No upsell on a new system, just fixed what needed fixing.”
“Got three quotes for a new central AC. The other two came in vague on what was included. David’s quote was line by line, equipment, labour, old unit removal, everything. The final invoice matched what he quoted. That’s all I wanted.”
David covers all of Durham Region, if you’re in or around Port Perry, he’s coming to you.
Same-day service available. TSSA certified. Honest pricing. Call or book online.
