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Toronto homeowners rely on their HVAC systems year-round — furnaces and boilers in winter, air conditioning in summer, and ventilation and filtration in between. With rising energy costs and extreme seasonal shifts, choosing the right HVAC company is more important than ever.

We’ve reviewed the top HVAC companies in Toronto based on reviews, customer feedback, service offerings, and reputation. Below are the 12 best contractors in 2025, with their key pros and cons.

Cozy Comfort Plus – Toronto HVAC & Fireplaces

4.8 (450+ reviews)

• Pros:
• 30+ years of experience serving Toronto and the GTA
• Specializes in HVAC systems AND premium fireplaces (Napoleon, Valor, Regency, Lennox, more)
• Comprehensive services: furnace, AC, heat pumps, ductless, water heaters
• Known for high-end installation + maintenance expertise
• Strong reputation for energy-efficient solutions
• Family-owned, locally trusted business
• Cons:
• Focused mainly on Toronto/GTA (not nationwide)
• Premium product lines can be higher-priced than entry-level competitors

1170 Sheppard Ave. West, Unit #48, Toronto

(416) 780-9760

[email protected]

Laird & Son Heating & Air Conditioning

4.8 (921 reviews)

• Pros:
• In business for over 70 years
• Strong reputation for professionalism and diagnostics
• Expertise in air filtration & duct cleaning
• 900+ positive reviews
• Cons:
• Higher diagnostic and after-hours surcharges
• Premium pricing on complex repairs

Toronto

+1 647-251-8630

Belyea Bros. Heating & Cooling

4.6 (614 reviews)

• Pros:
• Over 100 years in business (oldest HVAC firm in Toronto)
• Specializes in heating/cooling for older homes + hot water systems
• 600+ reviews, safety-certified, locally owned
• Cons:
• Longer lead times for specialized systems
• Premium pricing vs. newer contractors

Toronto

+1 416-425-1200

Convertible Heating and Air Conditioning

4.9 (2,500+ reviews)

• Pros:
• Family-owned, 50+ years of experience
• Award-winning service, rapid response
• Handles a wide range of HVAC installs & repairs
• Extremely high review volume (2,500+)
• Cons:
• May prioritize urgent/large projects over smaller requests
• Busy seasons can create scheduling delays

Toronto

(800) 423-0969

Aire Max Heating & Cooling Inc.

4.8 (340 reviews)

• Pros:
• Strong 4.8/5 rating from 300+ clients
• Extended hours (8am–11:30pm)
• Wide brand coverage for heating/cooling repairs
• Cons:
• Primarily focused on repairs
• Smaller staff than larger competitors

Toronto

☎ +1 416-843-1321

1Click Heating and Cooling

4.6 (295 reviews)

• Pros:
• 24/7 emergency service
• Rated 4.6/5 across nearly 300 reviews
• Specializes in fast, practical solutions
• Cons:
• Focused on HVAC only (no plumbing/electrical)
• Peak season wait times reported

Toronto

(800) 458-1289

Dupont Heating & Air Conditioning Ltd

4.3 (357 reviews)

• Pros:
• Long-established Toronto HVAC provider
• 24/7 emergency onsite service
• Accepts modern payment options
• Cons:
• Lower average rating (4.3/5) than top competitors
• Larger operation, less personalized support reported

Toronto

+1 416-532-2859

Green Heating and Air Inc.

4.8 (163 reviews)

• Pros:
• Eco-friendly focus with inclusive service
• 160+ reviews, strong 4.8 rating
• Provides both installs & repairs (on-site or online)
• Cons:
• Specialized in green upgrades (higher upfront costs)
• Smaller team = scheduling limitations

Toronto

+1 416-627-7724

LB Heating & Air Conditioning Co.

4.6 (165 reviews)

• Pros:
• Reliable 4.6 rating from 160+ reviews
• Offers both installs & repairs
• Flexible scheduling
• Cons:
• Closed Sundays & Mondays
• Wait times may increase on weekends

Toronto

+1 416-762-1291

Naz Heating & Cooling Inc.

4.7 (69 reviews)

• Pros:
• High rating (4.7/5)
• Services both installs and repairs
• 24/7 availability
• Cons:
• Smaller review base
• Limited service coverage area

Toronto

☎ +1 416-731-8685

City Air Toronto

4.6 (87 reviews)

• Pros:
• Open 24/7 with quick response
• Full HVAC installs, repairs, and duct cleaning
• Solid 4.6/5 reputation
• Cons:

• Mid-size company with smaller service scope
• Some reports of slower response during busy seasons

Toronto

+1 416-230-3689

Aire One Heating & Cooling

4.5 (66 reviews)

• Pros:
• Provides HVAC and air filtration solutions
• Multilingual service options
• Good 4.5 rating
• Cons:
• Smaller review count than leaders
• Warranty coverage can vary

Toronto

+1 416-537-3800

How to Choose the Right HVAC Company in Toronto

– For complete HVAC + fireplaces: Cozy Comfort Plus
– For heritage expertise: Laird & Son, Belyea Bros., Convertible Heating
– For emergency response: Aire Max, 1Click, City Air
– For eco-friendly HVAC solutions: Green Heating & Air
– For budget-friendly options: Naz Heating, LB Heating

Final Thoughts

oronto has a wide range of HVAC contractors, from heritage brands to modern eco-focused specialists. Companies like Cozy Comfort Plus stand out in 2025 thanks to their dual focus on HVAC and fireplaces, seasonal promotions, and reputation for high-quality installs.

For HVAC businesses, boosting online visibility and attracting local clients is essential. Partnering with a digital marketing agency for HVAC companies like Zigma Internet Marketing can help contractors improve SEO, showcase promotions, and grow their customer base effectively.

Tip: When comparing HVAC companies, ask about energy-efficient system rebates, warranty terms, and seasonal deals.