Markham Heating & Cooling provides fast, professional heating and cooling services in Markham, ON, and surrounding areas to keep your home or business comfortable year-round. From air conditioning repair to furnace installation, our licensed technicians ensure your systems run safely and efficiently while improving comfort, efficiency of your HVAC system, and indoor air quality.
Markham Heating & Cooling is the comfort team York Region homeowners rely on when a furnace, air conditioner, or heat pump needs experienced, on-time service.
We are a family-run Markham company, and we know this city and its neighborhoods well. Markham is one of Canada's most diverse and tech-driven communities, with heritage streetscapes in Unionville and Markham Village alongside large detached homes in Cornell, Berczy, and Angus Glen, and each pocket has its own heating and cooling demands.
Backed by our 100% satisfaction guarantee on every job.
Markham spans heritage Unionville homes, large Cornell properties, and busy tech-household schedules, and one local team covers the full range of work they need. Furnaces, air conditioners, heat pumps, ductless, duct cleaning, and smart controls, all under one phone number.
Markham's detached homes and townhouses, from Unionville to Cornell, rely on dependable gas furnaces through long York Region winters. We diagnose faults, swap failing parts, and install high-efficiency furnaces with clean workmanship and honest quotes.
Learn moreHumid York Region summers mean your central air or ductless unit works overtime. Our cooling technicians pinpoint problems fast, repair failed components, and install right-sized replacement systems that keep every room comfortable.
Learn moreHeat pumps are an increasingly popular choice for energy-conscious Markham homeowners, pairing heating and cooling in a single efficient system. We help you pick a cold-climate model, install it to spec, and keep it tuned for years of service.
Learn moreMarkham's mix of mature Unionville homes and newer subdivisions means ducts collect dust, pollen, and construction debris over time. Our cleaning restores airflow, eases the load on your equipment, and improves the air circulating through your home.
Learn moreA smart thermostat is a natural fit for Markham's tech-savvy households, trimming energy bills with learned schedules and remote control. We install, program, and repair Wi-Fi and multi-zone thermostats that keep large homes comfortable efficiently.
Learn moreDuctless mini-splits solve cooling and heating for Markham home offices, finished basements, and room additions where ductwork does not reach. We size indoor heads to each space and route lines cleanly for quiet, efficient, targeted comfort.
Learn moreWe have shaped our process around busy Markham households that need dependable, efficient service without disruption to their day.
We respect your schedule. Our technician arrives within the agreed window, in a stocked van, ready to diagnose your furnace, AC, or heat pump on the spot.
You see the price before we begin, whether it is a repair or a full system installation. We explain the work in plain terms and never push equipment you do not need.
We treat your home with care, lay down protection, and clean up fully. The job is tested under real conditions and backed by warranty and ongoing maintenance support.
We're proud to be the heating and cooling partner our neighbours trust and recommend.
“Markham Heating & Cooling handled our furnace repair quickly and professionally. The technician explained everything clearly and got our system running again the same day.”
“We needed a new air conditioner installed, and the process was smooth from start to finish. Very reliable team and great service for our home.”
“They helped upgrade our HVAC system and improved the airflow in our home. Everything feels more balanced and efficient now.”
Helpful details from our local service team.
We offer full heating and air conditioning support to keep your property running efficiently in every season.
When summer temperatures rise, a struggling air conditioning system can make your home uncomfortable. Our HVAC experts provide precise repair and hvac installation services for central air and ductless air conditioning systems. Whether you need to install a new air conditioning system or upgrade existing air conditioning systems, we focus on restoring comfort and improving energy-efficient performance for long-term reliability.
Cold weather in Markham requires dependable heating solutions. Our hvac technicians specialize in furnace repair and furnace installation, including high-efficiency furnace upgrades and full heating systems replacement. If you’re dealing with an aging furnace and air conditioner setup or considering a new furnace, we help ensure your HVAC equipment operates safely and efficiently through every heating season.
We respond quickly to HVAC work requests to restore comfort in your home without delay.
From furnace installation to hvac installation projects, we provide upfront guidance with no surprises.
Our team focuses on high-quality workmanship and careful attention to detail, ensuring reliable results and lasting comfort.
Whether your HVAC system is underperforming, your furnace needs attention, or your air conditioning systems aren’t cooling properly, Markham Heating & Cooling is ready to help. We handle installation, repair, and maintenance services with care so you can enjoy consistent home comfort all year long. Providing heating and cooling services in Markham Ontario and the surrounding areas.
Most systems benefit from annual maintenance to keep your hvac system running efficiently and to ensure long-term reliability. Regular checkups help maintain comfort for every homeowner and reduce unexpected breakdowns across Markham.
Cleaner indoor air starts with proper system maintenance. We provide air duct cleaning, air cleaner support, and air quality service to improve your home’s environment. From hot water tank connections to full HVAC system inspections, our team helps maintain balanced airflow and long-term system performance.
Practical advice to help you get the most from your heating and cooling system in Markham's climate.
Markham's real seasons push your HVAC system hard. Here's how often you should service your furnace and AC, and why twice a year is the sweet spot.
Read article
Don't wait for the coldest night of the year. Here are the most common warning signs your furnace needs repair before a Markham winter sets in.
Read article
If your AC runs all day but your home still feels sticky, humidity is likely the culprit. Here's why, and what you can do about it.
Read articleAnswers to the questions Markham homeowners ask us most.
Most no-heat calls in Markham are seen the same day, and a furnace out in freezing weather goes straight to the top of our list. We answer the phone ourselves and aim to have a technician at your door quickly, because going without heat in an Ontario winter is a safety issue, not just a comfort one.
We repair central air conditioners and ductless mini-splits across Markham, tackling refrigerant leaks, failed capacitors and contactors, frozen coils, and compressors that will not start. When a unit is no longer worth fixing, we size and quote a replacement built for York Region's humid summers.
Watch for uneven heating or cooling between rooms, ice on the outdoor unit in mild weather, loud operation or short cycling, and bills rising without a change in usage. These usually mean a repair will do. We lean toward replacement past about 12 to 15 years, with phased-out refrigerant, or when a major part like the compressor fails, and we give you honest numbers on both options.
Markham's mix of mature Unionville homes and newer subdivisions means ductwork collects dust, pollen, and leftover construction debris that chokes airflow and recirculates into your rooms. A professional cleaning opens the system back up so your equipment runs less, costs less, and delivers cleaner air.
Yes. We repair and replace programmable, smart, and zoning thermostats throughout Markham. If your thermostat is misreading the room, short-cycling your furnace, or dropping its Wi-Fi link, we get it working with your heating and cooling equipment again.
We install gas, electric, and wood-burning fireplaces, with gas units being the most popular choice in Markham homes. Each installation is sized and vented to code and connected cleanly to your heating setup for safe, efficient operation.
Yes. Ductless mini-splits are highly efficient because they avoid duct losses and condition only the rooms you use, which suits Markham home offices, finished basements, and additions where ductwork does not reach. We size each indoor head to its room and run lines cleanly.
Every technician we send is fully licensed, insured, and trained on the furnace, AC, and heat pump brands common in Markham and York Region homes. You get a punctual professional who explains the work and stands behind it.
Yes. We provide HVAC services throughout Markham and nearby communities including Richmond Hill, Newmarket, Aurora, Vaughan, and across York Region.
We do. A furnace failure in winter or an AC breakdown during a humid York Region heat wave cannot wait for office hours. Call us any time, day or night, and a real person will get a technician dispatched.
We provide fast, reliable hvac service throughout Markham and York Region. If you don't see your town listed, give us a call, chances are we cover it.
