Cassar Heating & Air Conditioning provides complete heat pump services across all of Durham Region. From energy-efficient installations to emergency repairs, David and his team deliver expert service you can trust.
From new installations to emergency repairs, Cassar provides comprehensive heat pump services designed for Ontario’s climate and your family’s comfort.
Professional installation of air-source and ground-source heat pumps sized specifically for your home. We handle permits, electrical connections, and ensure maximum efficiency from day one.
Fast, reliable repairs for all heat pump brands and models. Our technicians diagnose issues quickly and provide honest recommendations to get your system running efficiently again.
When repair costs exceed replacement value, we help you choose the right new system. Our replacement service includes removal of your old unit, proper disposal, and seamless installation.
Preventive maintenance keeps your heat pump running efficiently year-round. Our comprehensive tune-ups include cleaning, inspections, refrigerant checks, and performance optimization.
Heat pump problems don’t wait for business hours. Our emergency service ensures you’re never left without heating or cooling, especially during Ontario’s extreme weather conditions.
Upgrade to the latest high-efficiency heat pump models for maximum comfort and energy savings. We specialize in cold-climate heat pumps designed specifically for Ontario winters.
From your first call to final testing, our process is designed to be transparent, efficient, and stress-free.
Contact David directly at (416) 508-4585 or use our online booking system. We’ll discuss your heat pump needs and schedule a convenient appointment time.
Our certified technician will thoroughly assess your heat pump system, explain any issues found, and provide upfront pricing before any work begins.
Once you approve the work, we complete the repair, installation, or maintenance efficiently using quality parts and proven techniques.
We test the system thoroughly, clean up completely, and ensure you understand your heat pump operation. You’re left with reliable comfort and peace of mind.
When you choose Cassar Heating & Air Conditioning, you’re choosing a local company committed to honest service, quality workmanship, and your family’s comfort.
David Cassar started Cassar Heating & Air Conditioning to serve his neighbors across Durham Region with the honest, professional HVAC service he’d want for his own family. As a TSSA-certified technician with deep roots in the community, David understands Ontario’s unique climate challenges and how heat pumps can provide year-round comfort and energy savings.
Our approach is simple: listen to your needs, provide honest assessments, and deliver quality workmanship that lasts. Whether you need emergency heat pump repair in the middle of a cold snap or want to explore upgrading to a high-efficiency system, we’re here to help with genuine expertise and transparent pricing.
When you call Cassar, you’re not just getting a service provider — you’re getting a neighbor who cares about your comfort and stands behind every job with integrity and professionalism.
Real reviews from real customers who trusted Cassar with their heat pump needs.
“David installed our new heat pump last fall and it’s been incredible through this Ontario winter. Even on the coldest days it kept us warm and our energy bills dropped significantly. Professional service from start to finish.”
“Our heat pump was making weird noises and not heating properly. David came out same day, diagnosed the issue quickly, and had us back to comfortable in no time. Honest pricing and quality work.”
“Cassar helped us replace our old inefficient heat pump with a modern high-efficiency unit. David explained all the rebates available and handled the paperwork. Great experience and our home is more comfortable than ever.”
Common questions from Durham Region homeowners considering heat pump installation or repair.
Modern heat pumps work by extracting heat from outdoor air even at sub-zero temperatures, using advanced refrigerant technology and variable-speed compressors. Cold-climate heat pumps are specifically designed for Ontario’s harsh winters, maintaining efficiency down to -15°C to -25°C depending on the model. While efficiency decreases as temperatures drop, today’s heat pumps still provide significant heating and cost savings compared to electric baseboard, oil, or propane heating. Many systems include backup heating elements for the coldest days, ensuring your home stays comfortable year-round.
Yes, many Durham Region homeowners successfully use heat pumps as their primary heating system, even replacing gas furnaces. The decision depends on your home’s insulation, size, your comfort preferences, and energy costs. Heat pumps provide both heating and cooling, eliminating the need for separate systems. Some homeowners choose a hybrid approach, using the heat pump most of the year and switching to gas during the coldest weeks. David can assess your specific situation, calculate potential energy savings, and recommend the best solution for your home and budget.
Heat pump installation in Ontario typically ranges from $8,000 to $15,000 depending on system size, efficiency rating, installation complexity, and your home’s specific requirements. High-efficiency cold-climate models and larger homes may cost more, while smaller units or simpler installations fall on the lower end. However, Ontario rebates can significantly reduce your net cost by $2,000 to $6,000. Every home is different, and Cassar works with a wide range of budgets with financing options available. The best way to know what your specific installation will cost is to get a free quote from David — no pressure, no obligation.
Ontario offers substantial heat pump rebates through several programs. The Canada Greener Homes Grant provides up to $5,000 for qualified heat pump installations, while Enbridge offers rebates up to $1,750 for eligible customers. Local utilities and municipalities often have additional incentive programs. Total available rebates typically range from $2,000 to $6,000 depending on your location, utility provider, and the specific system you choose. Rebate programs change frequently and have specific eligibility requirements, so David stays current on all available incentives and helps you navigate the application process to maximize your savings.
A heat pump can both heat and cool your home, while a traditional air conditioner only cools. Heat pumps use a reversing valve to change the direction of refrigerant flow, extracting heat from outdoors to warm your home in winter, and removing heat from indoors to cool your home in summer. This makes heat pumps more versatile and often more cost-effective than separate heating and cooling systems. The outdoor units look very similar, but heat pumps typically have additional components like defrost controls and enhanced cold-weather features. If you need both heating and cooling, a heat pump provides year-round comfort in one efficient system.
A properly installed and maintained heat pump typically lasts 15-20 years in Ontario’s climate. Factors affecting lifespan include system quality, installation quality, usage patterns, and maintenance frequency. Regular annual maintenance significantly extends system life by preventing small problems from becoming major failures. Cold-climate heat pumps may have slightly shorter lifespans due to working harder in winter conditions, but modern units are built to handle Ontario’s temperature extremes. Signs it may be time for replacement include frequent repairs, rising energy bills, inconsistent temperatures, or if your system is over 15 years old and requiring major repairs.
For Ontario’s climate, look for heat pumps with a Coefficient of Performance (COP) of at least 3.0 at 8°C outdoor temperature, and an HSPF (Heating Seasonal Performance Factor) rating of 8.5 or higher. Cold-climate heat pumps designed for our winters should maintain efficiency at -15°C with a COP of at least 1.75. Higher ratings mean better efficiency and lower operating costs, but also higher upfront costs. The most cost-effective choice balances efficiency ratings with your specific heating needs, local utility rates, and available rebates. David can help you understand the ratings and choose the right efficiency level for your home and budget.
Ontario’s extreme weather demands seasonal attention to keep your heat pump running efficiently through every season.
Schedule your pre-winter tune-up before temperatures drop. This includes cleaning coils, checking refrigerant levels, testing defrost cycles, and ensuring your system is ready for heating season. Fall maintenance prevents mid-winter breakdowns when you need your heat pump most. We also inspect and clear any debris around the outdoor unit that could restrict airflow during winter operation.
Watch for warning signs like excessive ice buildup, unusual noises, or backup heating running constantly. Some frost on the outdoor unit is normal, but heavy ice accumulation may indicate a problem. Keep the outdoor unit clear of snow and ice, and call for service if you notice reduced heating or higher energy bills. Emergency service is available for those brutally cold Durham Region nights.
Spring is the ideal time for heat pump replacement or upgrades, taking advantage of off-season pricing and ensuring installation before cooling season begins. We inspect your system after winter’s stress, clean accumulated debris, and switch settings for efficient cooling. Spring is also when new rebate programs often launch, making it a cost-effective time for upgrades to high-efficiency models.
Your heat pump works as an air conditioner during hot Durham summers, so keep outdoor coils clean and change filters regularly for peak cooling efficiency. Summer’s lighter workload is perfect for addressing minor repairs or planning system upgrades. We offer competitive summer maintenance packages to keep your system running smoothly and prepare it for the next heating season ahead.
Answers to the most common heat pump questions from Durham Region homeowners.
Yes, modern heat pumps work effectively in Ontario winters, even in temperatures as low as -15°C to -25°C depending on the model. Cold-climate heat pumps use advanced inverter technology and enhanced vapor injection to maintain efficiency in sub-zero temperatures. While efficiency does decrease as outdoor temperatures drop, a properly sized heat pump can still provide significant heating and cost savings compared to electric baseboard or oil heating. Many Ontario homeowners use heat pumps as their primary heating source with a backup system for the coldest days.
The best choice depends on your home, budget, and energy goals. Heat pumps offer year-round heating and cooling, lower operating costs, and qualify for significant Ontario rebates. Gas furnaces have lower upfront costs and provide consistent heat regardless of outdoor temperature. Many homeowners choose a hybrid system that uses the heat pump most of the year and switches to gas during the coldest weeks. David can assess your specific situation and recommend the most cost-effective solution for your home.
Heat pump installation in Durham Region typically ranges from $8,000 to $15,000 depending on the system size, efficiency rating, and installation complexity. High-efficiency models and larger homes may cost more, while smaller units or simpler installations cost less. Ontario rebates can reduce your net cost by $2,000 to $6,000. Every home is different, so the best way to get an accurate price is a free in-home assessment where David can evaluate your specific needs and provide honest, upfront pricing.
Ontario offers several heat pump rebates through the Canada Greener Homes Grant ($5,000), Enbridge rebates (up to $1,750), and local utility programs. The total available rebates often range from $2,000 to $6,000 depending on your location and the system you choose. Rebate programs change frequently and have specific eligibility requirements. David stays current on all available incentives and can help you navigate the application process to maximize your savings.
Most heat pump installations take 1-2 days depending on the complexity of your system and any required electrical or ductwork modifications. Simple replacements of existing systems often take just one day, while new installations with ductwork or electrical upgrades may require two days. David will provide a clear timeline during your assessment so you know exactly what to expect. We work efficiently to minimize disruption to your daily routine while ensuring quality installation.
Cassar Heating & Air Conditioning provides professional heat pump installation, repair, and maintenance services throughout Durham Region. Click your community below for local service information.
Comprehensive heating, cooling, and comfort solutions for your Durham Region home.
Same-day service available across all of Durham Region. TSSA certified. Honest pricing. No surprises.
