Your Trusted
HVAC Contractor in Markham, ON

Looking for a trusted HVAC company in Markham? Our team of experts delivers dependable service, every season.

Licensed & Insured

Experienced Contractors

Markham HVAC Company

William C Testimonial Headshot
William C.
Unionville

"Cozy World made the entire process of replacing our HVAC system so simple. They were on time, professional, and took the time to answer all our questions. "

Get a Free Estimate Right Away From a Licensed HVAC Contractor in Markham

Call (416) 855-3651

HVAC technician

Reliable Service from a Local HVAC Company in Markham

When it comes to reliable heating and cooling, Cozy World is the trusted HVAC company Markham homeowners rely on. From heritage homes in Unionville to modern townhomes in Cornell and upscale builds in Cachet, we provide year-round comfort across every part of the city.

Our licensed technicians handle everything from furnace installations and air conditioner repairs to heat pump retrofits. Whether you're upgrading your system for better efficiency or need fast emergency service, we’ve got you covered.

With over 30 years of experience as a leading HVAC contractor in Markham, we understand the diverse needs of homes across the city. From older properties near Main Street Markham to custom homes in Berczy and Box Grove, our team tailors every solution to meet your home’s specific requirements.

4 Simple Steps For HVAC Installation or Repair

As a trusted HVAC contractor Markham homeowners rely on, Cozy World keeps your experience smooth from start to finish. Whether you need a quick repair or a full system replacement, here’s how we get the job done:

  • Schedule Your Appointment

    Book a visit online or by phone. Our Markham HVAC company offers flexible scheduling and fast response times across the city.

  • On-Site System Check

    One of our licensed HVAC technicians arrives at your home to inspect the issue. We’re fully equipped to assess furnaces or air conditioners the spot.

  • Honest, Upfront Quote

    We provide a clear estimate before any work begins. No surprises—just transparent pricing from a reliable HVAC company in Markham.

  • Professional Service

    Our skilled team completes your repair, replacement, or installation with precision. We work cleanly, safely, and efficiently—backed by over 30 years of local HVAC expertise.

Our HVAC Services in Markham

As a full-service HVAC company Markham residents trust, Cozy World delivers reliable heating and cooling solutions across the city. See some of our available services below:

Why Choose Our Markham HVAC Company?

We’re more than just another HVAC company in Markham—we’re a team committed to quality, integrity, and long-term comfort.

Skilled & Experienced Technicians

With over 30 years in business, we bring deep HVAC knowledge to every job. Our technicians know Markham homes inside and out, from downtown condos to suburban houses.

Certified & Fully Insured

You’re protected every step of the way. As a certified and insured HVAC contractor Markham homeowners trust, we ensure every service meets provincial standards and safety codes.

Lennox Authorized Dealer

Cozy World Markham proudly installs Lennox heating and cooling systems—one of the most trusted brands in the industry. You get premium products backed by professional expertise.

Focus on Energy Efficiency

Helping you choose HVAC systems that reduce your utility bills and environmental impact. From high-efficiency furnaces to smart thermostats, we make energy savings simple.

Honest, Transparent Pricing

Providing upfront quotes—no surprises or hidden fees. You’ll always know what you’re paying for and why.

Precision-Focused Installations

Our team handles every installation with care, accuracy, and attention to detail. We leave your space clean and your system running at peak performance.

About Cozy World Markham HVAC Contractors

Since 1991, Cozy World has been a leading HVAC contractor Markham homeowners rely on for expert installations and reliable service. Cozy World is fully licensed, insured, and committed to doing the job right the first time.

Fully Licensed and Certified for Your Protection

Our technicians are licensed for both furnace and air conditioner installation, with full TSSA and HRAI registration to operate as a certified HVAC company in Markham. Every installer is factory-trained and experienced, ensuring your new system is installed to the highest standard.

Professionalism That Shows in Every Detail

During installation, we use drop sheets to protect your floors and always leave your home just as clean as we found it. All new systems come with parts and labour warranties, and we stand by every job with A+ service—just check our BBB rating: zero complaints, ever.

From quoting to cleanup, there are no cost surprises. We’ll give you an exact price before we begin and stick to it. Our goal is to keep your home comfortable for years to come through expert installation and dependable HVAC maintenance.

Thousands of happy Markham homeowners have trusted us with their comfort. We’d love to help you next.

cozy world hvac contractor

The Best Markham HVAC Company

At Cozy World, we don’t just install HVAC systems—we build long-term relationships with our customers. As a top-rated HVAC company in Markham, we’re proud to have earned the trust of thousands of homeowners across the city.

Frequently Asked Questions

Choosing the right HVAC system — and the right team — makes all the difference. At Cozy World, we’re proud to be a leading HVAC company Markham homeowners trust for quality workmanship, transparent pricing, and expert guidance. Below are answers to some of the most common questions we get from clients across the city.

Cozy World Markham HVAC Contractor Service Areas

From Steeles Avenue to Major Mackenzie Drive, Cozy World proudly provides expert HVAC services across all of Markham. Whether you're near Pacific Mall, Toogood Pond, or in one of the city's growing suburbs, our team is ready to bring comfort to your home year-round.

  • Angus Glen
  • Armadale
  • Berczy
  • Box Grove
  • Buttonville
  • Cachet
  • Cathedraltown
  • Cedar Grove
  • Cornell
  • Greensborough
  • Legacy
  • Markham Village
  • Middlefield
  • Milne Dam Area
  • Raymerville
  • Rouge Fairways
  • Rouge River Estates
  • South Unionville
  • Thornhill
  • Unionville
  • Victoria Square
  • Vinegar Hill
  • Wismer
Dont see your neighbourhood? Chances are we can still help. Give us a call at (416) 855-3651 and we'll be sure to connect you with the right office.

Looking for an HVAC Contractor in Markham?

Contact Cozy World — the Markham HVAC contractor trusted by homeowners across the city. From installation to expert advice, we’re here to help you every step of the way.