Expert furnace, air conditioning, and heat pump installation, repair, and maintenance. 24/7 emergency service with lifetime warranty and up to $5,000 in rebates.
From installation to emergency repairs, we're your complete heating and cooling solution.
High-efficiency heating systems for Ontario winters
Cool comfort for hot summer months
Year-round heating and cooling efficiency
Preventive care for optimal performance
Emergency and scheduled repair services
Improve air quality and system efficiency
We install only the most efficient, reliable HVAC systems from trusted manufacturers.
From assessment to installation, we make your HVAC project smooth and hassle-free.
We assess your current system, perform load calculations, discuss efficiency options, explain rebates and financing, and provide detailed written estimates—all free with no obligation.
Choose from premium brands and models, review energy ratings and savings, plan installation logistics and timing, and finalize rebate applications and financing.
Our certified technicians remove old equipment safely, install new system to manufacturer specs, test all components and controls, ensure proper airflow and efficiency, and clean up completely.
We demonstrate thermostat operation, explain maintenance requirements, review warranty coverage, schedule first maintenance visit, and ensure you're 100% satisfied with comfort and performance.
Experience the difference with our certified technicians and premium HVAC systems.
Trusted HVAC experts serving Ontario families
Fully licensed HVAC contractors with WSIB coverage
Lifetime workmanship warranty on installations
We help you access up to $5,000 in Enbridge rebates
Always available when you need us most
Factory-trained and certified HVAC professionals
24/7 emergency HVAC service throughout the Greater Toronto and Hamilton areas.
Don't just take our word for it. See what homeowners say about our HVAC services.
"Our furnace died on the coldest night of winter. Custom Contracting came out within 2 hours and had us up and running by morning. Professional, fast, and reasonably priced. Highly recommend!"
Karen W.
Burlington, ON
"Just had a new high-efficiency furnace and AC installed. The team was knowledgeable, clean, and professional. Our energy bills have already dropped significantly. Great experience!"
Robert M.
Hamilton, ON
"Excellent service! They helped us navigate the Enbridge rebate process and installed a beautiful new heat pump system. Our home is more comfortable than ever and our bills are lower."
Linda P.
Oakville, ON
Get answers to common questions about furnaces, air conditioning, heat pumps, and costs.
A: A new furnace in Ontario typically costs $3,000-$6,000 installed, depending on efficiency rating, size, and brand. Standard 80% AFUE furnaces cost $3,000-$4,500, mid-efficiency 90-95% AFUE models cost $4,000-$5,500, and premium 96%+ AFUE furnaces cost $5,000-$6,500. Factors affecting price include home square footage requiring larger BTU capacity, two-stage or modulating burners for better efficiency, variable-speed blowers for comfort, and brand (Carrier, Bryant, Lennox, Rheem). We offer free estimates and 0% financing to make your investment affordable, plus you may qualify for Enbridge rebates up to $1,000.
A: For Ontario's climate with cold winters and hot summers, we recommend high-efficiency furnaces (95%+ AFUE) paired with central air conditioning, or heat pumps for year-round efficiency. Heat pumps work well down to -15°C and can reduce heating costs by 30-50%. For extreme cold backup, consider a dual-fuel system combining heat pump with furnace. Two-stage or modulating systems provide better temperature control and efficiency. Variable-speed blowers improve comfort and reduce noise. All should be properly sized—oversizing wastes energy while undersizing can't maintain comfort.
A: Most HVAC installations take 1-2 days depending on system complexity. A straightforward furnace replacement typically takes 6-8 hours in one day. Adding air conditioning takes another 4-6 hours for a total of 1-1.5 days. Complex installations with ductwork modifications, zoning systems, or whole-home humidifiers may take 2-3 days. Heat pump installations typically take 1.5-2 days. We work efficiently to minimize disruption while ensuring quality installation. Emergency furnace replacements can often be completed same-day when needed.
A: HVAC systems should be professionally serviced twice yearly—once in spring for AC and once in fall for furnace. Regular maintenance includes cleaning/replacing filters monthly, checking and cleaning coils, inspecting and lubricating moving parts, testing thermostat accuracy, checking refrigerant levels, inspecting electrical connections, testing safety controls, and measuring airflow and efficiency. Annual maintenance extends equipment life by 5-10 years, prevents 80% of breakdowns, maintains efficiency saving 15-20% on energy, keeps warranties valid, and ensures safe operation. Our maintenance plans provide priority service and discounts.
A: Proper HVAC sizing requires professional load calculation considering home square footage, insulation levels, window quality and orientation, ceiling heights, air sealing, occupancy, and climate zone. Rules of thumb like '1 ton per 500 sq ft' are unreliable. Oversized systems cost more, cycle on/off frequently reducing efficiency and comfort, don't dehumidify properly, and wear out faster. Undersized systems can't maintain temperature on extreme days, run constantly wasting energy, and cause premature failure. We perform Manual J load calculations free with every estimate for proper sizing.
A: Yes! We're an Enbridge Home Efficiency Rebate Plus (HER+) participant and help customers access rebates. Available rebates include: furnaces 95%+ AFUE up to $1,000, air conditioners 16+ SEER up to $600, heat pumps up to $5,000, smart thermostats $100, duct sealing $250-$1,000, and insulation upgrades. We handle paperwork, ensure equipment qualifies, verify installation meets requirements, and submit rebate applications. Rebates typically arrive in 6-8 weeks. Combined with our 0% financing, rebates make high-efficiency systems very affordable.
A: Single-stage furnaces have one heat output—either fully on or off. They're most economical ($3,000-$4,000) but can cause temperature swings and higher energy bills. Two-stage furnaces have high and low settings, running at low 70% of the time for steady heat, better efficiency (92-96% AFUE), quieter operation, and more even temperatures. They cost $4,000-$5,500 but save 15-20% on energy. Modulating furnaces adjust output in 1% increments for ultimate comfort and efficiency (96%+ AFUE) but cost $5,500-$7,000. For Ontario's climate, we recommend two-stage minimum.
A: Yes! Modern cold-climate heat pumps work efficiently down to -25°C or colder. They use less energy than furnaces, providing $1.50-$3 of heat per $1 of electricity. However, efficiency decreases below -10°C, so many Ontario homeowners use dual-fuel systems—heat pump primary with furnace backup for coldest days. Benefits include 30-50% lower heating costs, AC included, qualifies for $5,000 Enbridge rebates, reduces carbon footprint, and works excellently spring/fall. Upfront cost is higher ($8,000-$12,000) but payback is typically 5-8 years through energy savings.
A: We provide a lifetime workmanship warranty on all HVAC installations covering installation quality, ductwork connections, electrical work, and refrigerant charging. Equipment comes with manufacturer warranties: furnaces typically 10-year heat exchanger, 5-year parts; air conditioners 10-year compressor, 5-10-year parts; heat pumps similar to AC warranties. Extended warranties available up to lifetime on select models. Regular maintenance required to maintain warranties. Our warranty is fully transferable if you sell your home, adding significant value and providing peace of mind to buyers.
A: Yes! We provide 24/7 emergency HVAC service throughout Ontario. Furnace failures in winter and AC failures in summer heat waves are emergencies we respond to immediately. Same-day service available for most emergencies, priority scheduling for existing customers, emergency furnace rentals if repairs delayed, honest assessment—we only recommend replacement when necessary, and flexible payment options including emergency financing. Call (226) 799-4975 anytime for emergency service. We stock common parts on our trucks to repair most issues on the first visit.
Have more questions? We're here to help 24/7!
Contact Us TodayFor over 25 years, Custom Contracting has been Ontario's premier choice for professional HVAC services including furnace installation, air conditioning, heat pumps, and emergency repairs. Our factory-trained, licensed technicians specialize in high-efficiency heating and cooling systems that dramatically reduce energy costs while improving home comfort year-round.
We install premium brands including Carrier, Bryant, Lennox, and Rheem, offering systems ranging from 95-98% AFUE furnaces to 18+ SEER air conditioners and cold-climate heat pumps that work efficiently down to -25°C. As an Enbridge Home Efficiency Rebate Plus (HER+) participant, we help customers access up to $5,000 in rebates, making high-efficiency systems surprisingly affordable with our 0% financing options.
Our certified technicians perform proper Manual J load calculations to ensure correct system sizing—critical for efficiency, comfort, and equipment longevity. We handle everything from permits to rebate applications to final inspection, backed by our lifetime workmanship warranty. Plus, our preventive maintenance plans keep your system running efficiently, preventing 80% of breakdowns and extending equipment life by years.
Available 24/7 for emergency furnace and AC repairs throughout Burlington, Hamilton, Oakville, Mississauga, Kitchener-Waterloo, and Southwestern Ontario. Whether you need a new furnace installation, AC repair, or are considering a heat pump upgrade, contact Custom Contracting today for expert advice and a free, no-obligation assessment. Experience the comfort and savings of a properly installed, high-efficiency HVAC system.
45 Worthington Dr Unit H
Brantford, ON N3T 5M1
Same-day service available
Free assessments
Up to $5,000 rebates
Don't miss this 60% OFF offer! Contact us today.
📍 Visit Us
45 Worthington Dr Unit H
Brantford, ON N3T 5M1
✉️ Email Us
infor@customcontracting.ca