Delivering Year-Round Home Comfort Since 1983

For over four decades, Markham Heating & Air Conditioning has been the name homeowners trust for dependable, efficient, and honest HVAC services. Based right here in the heart of Markham, we’re proud to serve our community with heating, cooling, and indoor air quality solutions that keep your home comfortable through every season.

From the deep chill of Ontario winters to the humid heat of July, we make sure your systems perform at their best when you need them most. Our team combines old-fashioned craftsmanship with modern technology, ensuring your home stays safe, comfortable, and energy efficient.

We’re not just a service provider — we’re a local company built on relationships, quality work, and integrity. When you call Markham Heating & Air Conditioning, you’re choosing a partner dedicated to long-term comfort and peace of mind.

Comprehensive Heating & Cooling Services in Markham

Furnace Installation and Heating Repair Markham

When temperatures drop below freezing, you need a furnace you can rely on. Markham Heating & Air Conditioning offers expert furnace installation, maintenance, and repairs for all major makes and models. Whether you need a full system replacement or quick repair service, our certified technicians ensure every installation is safe, efficient, and built to last.

We help you select the ideal furnace for your home — one that fits your space, efficiency goals, and budget. Every unit we install is properly sized and fine-tuned for maximum performance and minimal energy waste.

Our heating repair in Markham team responds promptly to service calls and resolves issues right the first time. From ignition failures to airflow problems or strange noises, we diagnose quickly and fix thoroughly.

Our heating services include:

• Furnace installation and replacement
• Emergency heating repair
• Preventative furnace maintenance
• Gas fireplace service
• Thermostat and control upgrades

When it comes to heating in Markham, homeowners have trusted our craftsmanship and honesty since 1983.

Air Conditioning Installation Markham

A dependable air conditioning system is essential for comfort during the humid Ontario summers. At Markham Heating & Air Conditioning, we specialize in air conditioning installation, repair, and maintenance across the Markham area.

Whether you’re upgrading an old, inefficient unit or installing central air for the first time, our expert team provides seamless service from consultation to completion. We design every installation around your home’s specific layout and cooling needs, ensuring balanced temperatures and reduced energy bills.

Our air conditioning installation in Markham service includes only premium equipment and components. We install systems that perform quietly, run efficiently, and deliver lasting comfort — even on the hottest days.

If your air conditioner isn’t cooling properly, we provide quick and reliable AC repair in Markham, backed by decades of experience.

Air conditioning services:

• Central air conditioner installation and replacement
• Ductless mini-split systems
• Air conditioner repair and diagnostics
• Preventative AC maintenance plans

Keep your cool this summer with Markham’s trusted air conditioning experts.

Indoor Air Quality Markham

Comfort isn’t just about temperature — it’s about the air you breathe. Our indoor air quality services in Markham help you maintain a clean, healthy, and balanced home environment.

We offer advanced solutions designed to remove allergens, control humidity, and eliminate airborne contaminants that affect comfort and health. Whether your concern is dry winter air, excessive humidity, or dust and allergens, we have a customized solution.

Our indoor air quality products and services include:

• Whole-home humidifiers and dehumidifiers
• Air purification and filtration systems
• HEPA and electronic air cleaners
• Ventilation and fresh air solutions

These systems integrate seamlessly with your existing HVAC setup, improving comfort and protecting both your home and your health.

Water Heaters and Gas Fireplaces

Markham Heating & Air Conditioning also offers hot water heater installation and service, including both tank and tankless systems. We ensure reliable hot water while maximizing energy efficiency.

If you’re looking to add warmth and charm to your living space, we install and maintain gas fireplaces that combine style, comfort, and convenience. Every installation is handled with care, ensuring safety and long-term performance.

Why Markham Homeowners Choose Us

1. Established Local Expertise

Serving the community since 1983, we’re one of the most experienced HVAC companies in Markham. Our long-standing reputation has been built on consistent results and genuine customer care. We live and work in the same neighborhoods we serve — so your comfort truly matters to us.

2. Fully Licensed and Insured Technicians

Every member of our team is professionally trained, licensed, and insured. We follow strict safety and building code standards for every installation, ensuring your system operates safely and efficiently.

3. Honest Advice, No Pressure

Our approach is simple: we treat your home as if it were our own. You’ll always receive straightforward recommendations, transparent pricing, and no hidden fees. Whether it’s a furnace repair or full AC replacement, we help you make informed decisions with confidence.

4. Quality Workmanship

We take pride in the details. Every installation is clean, organized, and tested thoroughly before we leave. We use premium materials, ensure tidy ductwork, and perform precision calibration for maximum efficiency. Our commitment to craftsmanship is what sets us apart from other Markham HVAC companies.

5. Reliable Service and Maintenance

We understand that HVAC issues can’t wait. That’s why our technicians are responsive, punctual, and respectful of your time. Our maintenance plans help prevent unexpected breakdowns, reduce energy costs, and extend equipment life.

Energy Efficiency and Smart Home Solutions

Modern HVAC systems offer advanced technology that enhances comfort while lowering operating costs. At Markham Heating & Air Conditioning, we help homeowners upgrade to high-efficiency systems and smart thermostats that make everyday living more convenient and sustainable.

By investing in an energy-efficient furnace or air conditioner, you can:

• Lower your monthly utility bills
• Reduce your carbon footprint
• Enjoy more consistent comfort levels
• Qualify for manufacturer and government rebates

Our team will walk you through available energy-efficient models and explain the long-term benefits — because efficiency isn’t just good for your home, it’s good for the planet.

Preventative Maintenance: Protect Your Investment

Regular maintenance is the key to keeping your HVAC system running smoothly year after year. Our Markham HVAC maintenance services include detailed inspections, cleaning, and performance testing to identify potential issues before they become costly repairs.

Benefits of professional maintenance:

• Improved energy efficiency
• Extended equipment lifespan
• Reduced risk of breakdowns
• Better indoor air quality
• Consistent heating and cooling performance

Our technicians create a personalized service schedule that fits your home and system type — ensuring comfort and reliability throughout the year.

Proudly Serving Markham and Surrounding Communities

As a locally owned and operated company, we’re proud to serve not just Markham but also nearby communities including Unionville, Stouffville, Richmond Hill, Thornhill, and North Scarborough.

Every neighborhood we serve benefits from the same commitment to excellence that has defined our company for over 40 years. Whether you’re in an older heritage home in Unionville or a new development in East Markham, we tailor every service to your property’s unique needs.

When you see one of our service vans in your neighborhood, you can be sure that another Markham homeowner is experiencing our hallmark blend of professionalism, honesty, and care.

Our Promise: Comfort. Reliability. Integrity.

At Markham Heating & Air Conditioning, we believe home comfort should be effortless. From your first consultation to the final system check, every step of our process is built around reliability and customer satisfaction.

We’re guided by three simple principles:

1. Do it right the first time.
   Every installation and repair is performed to the highest standards.
2. Be transparent and honest.
   We provide accurate quotes, clear communication, and no unnecessary upselling.
3. Stand behind our work.
   Your satisfaction is guaranteed — if something isn’t right, we’ll make it right.

This philosophy has earned us a reputation as one of the most trusted HVAC companies in Markham — and it’s why our customers return year after year.

Get Started with Markham Heating & Air Conditioning

Whether you’re looking to replace an aging furnace, install a new air conditioning system, or simply schedule annual maintenance, our team is here to help.

Contact us today to schedule your service or request a free estimate.

Choose the HVAC Company Markham Trusts

When it comes to comfort, quality, and reliability, Markham Heating & Air Conditioning continues to set the standard.

We’ve built our business on integrity, expertise, and exceptional service — and we’re proud to bring those values into every Markham home we visit.

From furnace repair and air conditioning installation to indoor air quality solutions, trust the professionals who have been keeping Markham comfortable for over 40 years.

Markham Heating & Air Conditioning — Craftsmanship. A Fine Tradition.

When the temperature drops and Markham’s winter chill sets in, your furnace becomes the most important system in your home. It keeps your family warm, protects your plumbing from freezing, and ensures your indoor comfort. But like any piece of mechanical equipment, furnaces don’t last forever — and eventually, every homeowner faces the question: Should I repair my furnace, or is it time to replace it?

The answer depends on several factors, including your furnace’s age, performance, efficiency, and the cost of ongoing repairs. Let’s explore the key signs and decision points to help you make an informed choice.

1. Consider the Age of Your Furnace

The average furnace lifespan ranges from 15 to 20 years, depending on how well it’s maintained. If your furnace is more than 15 years old, even if it’s still running, it’s likely operating far below today’s energy efficiency standards.

Older furnaces also tend to require more frequent repairs as components wear out. When you find yourself calling for service multiple times each winter, that’s a sign that replacement may be the more cost-effective and reliable solution.

A new high-efficiency furnace can deliver significant energy savings — often reducing heating costs by 20–30% while improving comfort and airflow.

2. Look at Your Recent Repair History

It’s normal for a furnace to need occasional repairs, especially as it ages. But if repair calls are becoming frequent, the cumulative cost can quickly exceed the value of the system itself.

A good rule of thumb:

• If a repair costs more than one-third of what a new furnace would cost, and your system is over 10 years old, replacement is usually the smarter option.
• If the unit is newer and still under warranty, a repair makes sense.

At Markham Heating & Air Conditioning, our technicians will always provide an honest assessment — helping you weigh the cost of repair versus replacement based on your furnace’s condition, age, and performance.

3. Pay Attention to Your Energy Bills

A gradual increase in your natural gas or hydro bills is one of the clearest signs that your furnace isn’t operating efficiently. As furnaces age, they lose efficiency due to wear on components like the blower motor, heat exchanger, or ignition system.

Even with regular maintenance, an older furnace simply can’t match the efficiency of modern models.

In Markham, where winters can stretch for months, upgrading to an ENERGY STAR® rated furnace can save hundreds of dollars per year. Plus, many newer systems qualify for government rebates or utility incentives, offsetting part of the installation cost.

4. Assess Comfort and Airflow Issues

If you’ve noticed that some rooms in your home are too cold while others are too warm, or that your furnace struggles to maintain a consistent temperature, it may be a sign of declining performance.

Common causes include:

• Worn-out blower motors or belts
• Leaky or undersized ductwork
• Failing heat exchangers or burners

Sometimes, these issues can be corrected with targeted repairs or system balancing. However, if your furnace is already near the end of its lifespan, a replacement system with improved airflow design and variable-speed technology will provide a far more consistent and comfortable result.

5. Listen for Unusual Noises or Smells

Furnaces in need of repair often tell you something is wrong before they fail completely. Unusual sounds such as banging, rattling, squealing, or humming can indicate mechanical wear, airflow blockages, or ignition problems.

Unpleasant odors — especially a burning or metallic smell — may signal electrical issues or dirt buildup inside the system. If you ever notice a sulphur or rotten egg smell, leave your home immediately and contact your gas supplier, as this can indicate a gas leak.

While some noises can be fixed with minor repairs, persistent or worsening sounds may mean your system’s internal components are reaching the end of their service life.

6. Watch for Yellow or Flickering Pilot Flames

A properly functioning gas furnace should have a steady blue pilot flame. If your furnace’s pilot light is yellow, orange, or flickering, it may indicate incomplete combustion — a potential safety concern.

This can be caused by a dirty burner, improper gas pressure, or a cracked heat exchanger. All of these require prompt professional attention.

If your technician identifies a damaged heat exchanger, replacement is strongly recommended, as a crack can allow carbon monoxide to leak into your home.

7. Evaluate Safety and Reliability

Safety should always be the top priority. Frequent cycling, delayed ignition, or inconsistent heating can point to system instability or failing safety sensors. If your furnace has been red-tagged by a gas technician or has required repeated safety resets, it’s time to invest in a new, reliable unit.

Modern furnaces feature advanced safety controls and sealed combustion systems, which greatly reduce the risk of carbon monoxide leaks and improve indoor air quality.

8. Think About Your Long-Term Comfort and ROI

Sometimes, replacing your furnace isn’t just about fixing a problem — it’s about upgrading your home’s comfort and value.

A new furnace can offer:

• Quieter operation with variable-speed motors
• Improved temperature control
• Lower maintenance costs
• Smart thermostat compatibility for better energy management

If you plan to stay in your Markham home for several more years, the long-term savings, comfort, and reliability of a new furnace often outweigh the short-term cost of ongoing repairs.

When to Call Markham Heating & Air Conditioning

If you’re unsure whether your furnace needs a repair or replacement, the best next step is a professional assessment. Our licensed technicians at Markham Heating & Air Conditioning provide honest, pressure-free evaluations. We’ll inspect your system, explain your options clearly, and help you make a decision that fits both your comfort needs and your budget.

Whether your furnace needs a simple tune-up or it’s time for a modern, energy-efficient replacement, we’re here to make the process seamless from start to finish.

Stay Warm, Stay Safe, and Stay Efficient

Knowing when to repair or replace your furnace isn’t always easy, but paying attention to performance, efficiency, and safety signs can help you act before an unexpected breakdown happens. With the right guidance and trusted local expertise, you can ensure your Markham home stays warm, efficient, and worry-free all winter long.

For professional furnace repair and installation in Markham, call Markham Heating & Air Conditioning today.

Keeping your home comfortable year-round in Markham relies heavily on the performance and efficiency of your HVAC system. Whether it’s your furnace, air conditioner, or heat pump, regular maintenance is essential for long-lasting operation, lower energy bills, and fewer costly repairs. But the question many homeowners ask is: How often should HVAC maintenance be scheduled in Markham?

The answer depends on the type of system you have, its age, and the conditions it operates under. Let’s break it down.

1. Annual Maintenance Is the Standard

For most homes in Markham, a professional HVAC inspection and tune-up at least once a year is the recommended baseline. However, this is usually split between two seasonal visits:

• Spring (Pre-Summer) – Air Conditioning Maintenance:
  Before the heat of summer arrives, it’s important to ensure your air conditioner is ready to perform efficiently. During a typical AC service, a licensed technician will:
• Inspect and clean the condenser coils
• Check refrigerant levels and pressures
• Examine electrical components, fuses, and wiring
• Test airflow and the blower motor
• Inspect ductwork for leaks or obstructions
• Replace or clean filters as needed
• This visit helps prevent breakdowns during the hottest months and improves energy efficiency.
• Fall (Pre-Winter) – Furnace Maintenance:
  As winter approaches in Markham, your furnace is about to work harder than any other time of year. A fall tune-up ensures your system is safe, reliable, and ready to deliver consistent warmth. Typical tasks include:
• Checking the heat exchanger for cracks or damage
• Inspecting burners and flame sensors
• Cleaning and lubricating motors and moving parts
• Testing thermostat function and calibrating temperature settings
• Checking ductwork for leaks or poor airflow
• Replacing or cleaning air filters
• Regular maintenance before winter reduces the risk of emergency repairs and improves indoor air quality during months when your system runs constantly.

2. Why Semi-Annual Maintenance Matters

Many homeowners underestimate the importance of servicing both heating and cooling systems separately. Even though some systems, like heat pumps or modern dual-fuel units, combine heating and cooling in one, seasonal inspections still help identify small issues before they become major problems.

Benefits of semi-annual maintenance include:

• Improved energy efficiency, lowering monthly heating and cooling costs
• Extended equipment lifespan by reducing wear and tear
• Better indoor air quality by removing dust, allergens, and debris
• Prevention of unexpected system failures during extreme weather
• Detection of safety hazards, such as gas leaks or carbon monoxide risks

By scheduling two visits per year, Markham homeowners can maintain consistent performance and protect their investment.

3. Older Systems May Require More Frequent Checks

If your HVAC system is over 10–15 years old, or if it has a history of frequent repairs, additional maintenance visits may be recommended. Older furnaces, boilers, and air conditioners are more prone to wear and may benefit from quarterly inspections or minor tune-ups to ensure safety and reliability.

For example:

• Air conditioners in older homes may experience refrigerant loss or clogged coils more often.
• Furnaces may develop failing motors, belts, or gas valves requiring earlier detection.

Markham Heating & Air Conditioning can create a custom maintenance schedule based on your equipment’s age, usage, and past service history.

4. Signs You May Need Maintenance Sooner

Even with a standard maintenance plan, there are signs that your HVAC system might need attention sooner than the scheduled visit:

• Unusual noises like rattling, banging, or squealing
• Uneven heating or cooling in different rooms
• Higher energy bills without a change in usage
• Frequent cycling (system turning on and off too quickly)
• Weak airflow or unusual odors

If any of these signs appear, it’s best to call a professional immediately. Early maintenance can prevent minor issues from turning into major repairs.

5. The Role of Professional Technicians in Markham

Regular maintenance isn’t just about cleaning or changing filters — it’s about professional inspection and adjustment. Certified HVAC technicians have the training and tools to:

• Detect hidden problems such as gas leaks or electrical hazards
• Measure system efficiency and suggest energy-saving improvements
• Adjust combustion settings, refrigerant levels, and airflow
• Test safety devices, including carbon monoxide detectors and limit switches
• Provide expert advice on system replacement or upgrades

Doing maintenance yourself is not enough — professional service ensures your system operates safely, reliably, and efficiently.

6. The Long-Term Value of Scheduled HVAC Maintenance

By committing to regular maintenance, Markham homeowners enjoy a wide range of long-term benefits:

• Reduced repair costs: Minor issues are caught early, avoiding expensive emergency repairs.
• Extended equipment life: Proper care can add years to your furnace, air conditioner, or heat pump.
• Enhanced comfort: Consistent temperature and improved humidity control keep your home cozy and pleasant.
• Energy savings: Well-maintained systems use less energy, lowering utility bills.
• Peace of mind: Knowing your system is safe, efficient, and reliable reduces winter or summer stress.

Annual or semi-annual maintenance is a small investment compared to the cost of unexpected breakdowns or early replacement.

7. How Markham Heating & Air Conditioning Can Help

At Markham Heating & Air Conditioning, we provide comprehensive HVAC maintenance plans tailored to Markham homes. Our licensed technicians handle both residential and light commercial systems, ensuring that every furnace, air conditioner, or heat pump operates at peak efficiency.

With a maintenance plan from us, you can expect:

• Convenient scheduling that fits your lifestyle
• Detailed inspections and cleaning of all major components
• Personalized recommendations for repairs or upgrades
• Priority service in case of emergency repairs

Our goal is simple: maximize your comfort, minimize energy costs, and extend the life of your HVAC system.

Schedule Maintenance to Protect Your Home and Comfort

To keep your HVAC system running efficiently in Markham, the general recommendation is at least one professional maintenance visit per year for both heating and cooling, with semi-annual inspections being ideal for year-round reliability. Older systems or homes with high usage may benefit from additional check-ups.

Regular maintenance is more than a service—it’s an investment in comfort, safety, efficiency, and cost savings. Don’t wait until your system fails in the middle of a cold Markham winter or a hot summer afternoon.

Contact Markham Heating & Air Conditioning today to schedule your professional HVAC maintenance and ensure your home stays comfortable all year long.

As a homeowner in Markham, your air conditioner is critical for keeping your home cool, comfortable, and healthy during the hot and humid summer months. Like any complex system, an air conditioner requires regular care to operate efficiently. But sometimes problems develop between maintenance visits. Knowing the signs that your AC needs professional servicing can prevent expensive repairs, improve energy efficiency, and extend the life of your system.

1. Weak or Inconsistent Airflow

One of the most common indicators that your air conditioner needs attention is weak or uneven airflow from the vents. If some rooms feel cool while others remain warm, it could signal issues such as:

• Clogged or dirty air filters
• Blocked or leaking ductwork
• A failing blower motor or fan

Weak airflow forces your system to work harder, raising energy costs and accelerating wear. A professional technician can identify the root cause and restore proper airflow throughout your home.

2. Warm Air Coming from the Vents

If your air conditioner is running but blowing warm or lukewarm air, it is a clear sign that professional service is required. Possible causes include:

• Low refrigerant levels due to leaks
• A malfunctioning compressor
• A frozen evaporator coil

Attempting to ignore the problem or continue running the system can result in more extensive damage. AC repair specialists in Markham have the tools to diagnose the issue accurately and restore optimal cooling performance.

3. Unusual Noises

Air conditioners should operate quietly. Any sudden or unusual noises may indicate a problem that requires professional attention. Common sounds include:

• Rattling or banging: Could indicate loose components or debris inside the system.
• Hissing: Often a refrigerant leak or ductwork issue.
• Squealing or grinding: May point to a failing motor, fan belt, or bearing.

Ignoring unusual noises can lead to complete system failure or expensive repairs. A licensed technician will inspect and correct the issue safely.

4. Foul or Unpleasant Odors

A properly functioning air conditioner should not emit strong odors. If you notice musty, burning, or chemical smells, it’s a sign that your system needs servicing. Potential causes include:

• Mold or mildew growth inside the ductwork or evaporator coils
• Burnt-out electrical components
• Refrigerant leaks

Professional servicing ensures these problems are addressed promptly, protecting both your home and your family’s health.

5. Increased Energy Bills

If your monthly hydro bill spikes unexpectedly, it may indicate that your air conditioner is working harder than it should. Reduced efficiency can result from:

• Dirty or clogged filters
• Failing motors or compressors
• Leaky ductwork
• Refrigerant issues

Markham homeowners often overlook small efficiency problems until costs rise significantly. Regular AC inspections can prevent high utility bills and maintain optimal performance.

6. Frequent Cycling On and Off

A healthy air conditioner should maintain steady operation during cooling cycles. If your AC turns on and off repeatedly (short cycling), it could indicate:

• Thermostat malfunctions
• Electrical issues
• Refrigerant shortages
• Oversized or undersized system

Short cycling not only reduces cooling efficiency but also strains system components, increasing the risk of early failure. Professional service ensures proper operation and prevents unnecessary wear.

7. Visible Ice or Frost on Components

Ice forming on your air conditioner’s coils or refrigerant lines is a serious sign of trouble. Causes include:

• Low refrigerant levels
• Poor airflow due to dirty filters or blocked vents
• Faulty components such as compressors or fans

A frozen AC cannot cool effectively and continuing to run it may damage the system permanently. Markham HVAC technicians have the expertise to safely thaw, diagnose, and repair the issue.

8. Water Leaks or Excess Moisture

Air conditioners remove moisture from indoor air as part of the cooling process. However, visible water pooling around your indoor unit or near ductwork can indicate:

• Clogged condensate drain lines
• Frozen evaporator coils
• Poor installation or drainage issues

Ignoring leaks can cause water damage, mold growth, and costly repairs. Professional servicing ensures proper drainage and prevents long-term problems.

9. Inconsistent Temperature Control

If your air conditioner is struggling to maintain a set temperature, even after adjusting the thermostat, it may require service. Possible causes include:

• Malfunctioning thermostat sensors
• Low refrigerant levels
• Uneven airflow in ductwork

Professional technicians can calibrate thermostats, diagnose cooling inefficiencies, and restore consistent comfort throughout your home.

10. Your Air Conditioner Is Over 10–15 Years Old

Even without obvious signs of malfunction, older air conditioning systems often lose efficiency over time. Units more than 10–15 years old may require frequent repairs, struggle to maintain temperatures, and consume excessive energy. At this stage, a professional evaluation may recommend servicing, upgrades, or replacement to improve performance and reduce costs.

Why Professional AC Service in Markham Matters

Air conditioning systems are complex, combining electrical, mechanical, and refrigerant-based components. Attempting DIY fixes can be dangerous and may void manufacturer warranties.

Professional technicians, like those at Markham Heating & Air Conditioning, provide:

• Expert diagnostics for every issue
• Safe handling of refrigerants and electrical components
• Preventive maintenance to extend system lifespan
• Recommendations for energy-efficient upgrades

Regular professional service ensures your air conditioner operates safely, efficiently, and reliably — keeping your Markham home comfortable even during the hottest summer days.

Schedule Your AC Service Today

Don’t wait until a small issue becomes a major problem. If your air conditioner shows any of these signs, contact Markham Heating & Air Conditioning for professional servicing. Our licensed technicians provide reliable, efficient, and honest service to keep your system performing at its best.