Reliable HVAC Services Across the GTA and Surrounding Areas
Professional heating, cooling, and ventilation solutions for homes and businesses. From repairs to installations, we keep your comfort a priority.
Serving Toronto and surrounding areas, including Vaughan, Markham, Richmond Hill, Aurora, and nearby communities.
Heating, Cooling & Air Quality
Our Services
Professional HVAC solutions for residential and commercial properties across the GTA and surrounding areas.
Heating Services
Keep your home or business warm and comfortable with dependable heating solutions.
- Furnace installation and replacement
- Furnace repair and maintenance
- Boiler systems
- Heat pump solutions
Cooling Services
Stay comfortable throughout the summer with professional air-conditioning services.
- Air conditioner installation
- AC repair and servicing
- Ductless mini-split systems
- Seasonal tune-ups
Ventilation & Air Quality
Improve airflow, comfort, and indoor air quality throughout your property.
- Ductwork installation and repair
- Air filtration and purification systems
- Humidifiers and dehumidifiers
- Ventilation upgrades
Commercial HVAC
Reliable HVAC systems and maintenance solutions for commercial properties.
- Rooftop units (RTUs)
- Full system design and installation
- Preventive maintenance plans
- Emergency repair services
Trusted Equipment
Brands We Work With
We work with trusted HVAC equipment manufacturers to provide reliable heating, cooling, and ventilation solutions for residential and commercial properties.
About Sigma HVAC Inc.
Our Story
We are a Toronto-based HVAC company focused on delivering reliable, high-quality heating, cooling, and ventilation solutions across the GTA and surrounding areas. Our approach is simple: provide fast, professional service without compromising on quality or attention to detail.
Leadership
Founded by Sadegh Momenoon and Nariman Alimoradian, the company is led with a hands-on approach and a strong commitment to customer satisfaction. As Co-Founders and Directors, they ensure every project meets a high standard of workmanship and professionalism.
Sadegh Momenoon
Co-Founder & Director
With 10 years of hands-on HVAC installation and service experience, Sadegh brings strong technical knowledge and expertise to every project. As a licensed G2 technician, he focuses on delivering reliable, efficient, and high-quality heating and cooling solutions for residential and commercial customers.
- 10 Years of HVAC Experience
- Licensed G2 Technician
Nariman Alimoradian
Co-Founder & Director
With 6 years of project management experience, Nariman brings strong leadership, organization, and customer-focused skills to the team. His background in managing projects and building client relationships helps ensure every HVAC service is delivered smoothly, professionally, and with customer satisfaction as a priority.
- 6 Years of Project Management
- Customer-Focused Leadership
What We Stand For
We combine speed, precision, and transparency to deliver HVAC solutions that last. Whether it’s a quick repair or a full system upgrade, our focus is always on doing the job right and building long-term trust with our clients.
Speed
Fast and professional service when customers need reliable HVAC support.
Precision
Careful attention to detail and dependable workmanship on every project.
Transparency
Clear communication, honest recommendations, and straightforward service.
Long-Term Trust
Building lasting customer relationships through consistent quality and dependable results.
Our Commitment
Reliable service, clear communication, and consistent quality: that’s what you can expect from us every time.
Why Sigma HVAC Inc.
Why Choose Us?
We focus on doing the job right the first time, so you do not have to worry later.
Fast Response Times
Prompt and dependable HVAC service for customers across the GTA and surrounding areas.
Skilled and Reliable Technicians
Experienced professionals focused on dependable service, careful workmanship, and reliable results.
Honest Pricing
Clear recommendations and straightforward pricing with no hidden fees.
Quality Equipment and Workmanship
Reliable HVAC equipment combined with careful installation, repair, and attention to detail.
Residential and Commercial Expertise
Professional heating, cooling, and ventilation solutions for homes, businesses, and commercial properties.
Need Reliable HVAC Service?
Contact Sigma HVAC Inc. for professional heating, cooling, ventilation, and commercial HVAC service across the GTA and surrounding areas.
Where We Work
Service Areas
We proudly serve Toronto, Aurora, Newmarket, Barrie, Sudbury, Vaughan, Markham, Richmond Hill, and surrounding areas.
Not sure if we cover your neighborhood?
Contact Us to Confirm AvailabilityPhoto credits: Vaughan, Markham, Aurora, Newmarket — Mhsheikholeslami / Wikimedia Commons, CC BY-SA 4.0; Sudbury — Ryan Sharpe / Wikimedia Commons, CC BY-SA 4.0. Other photos via Unsplash and Wikimedia Commons (CC0 / public domain).
Reach Us
We’re Always Here to Help
Have a question or need service? Reach out using the details below, or send us a message and we’ll follow up with you.
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