Comprehensive Guide to Lennox HVAC Component Services by CANRO Heating & Cooling For homeowners with a Lennox HVAC system, proper maintenance and timely repair of individual components are crucial to maintaining a comfortable, energy-efficient, and safe environment. Each part of your system—whether it’s the blower motor, flame sensor, control board, or thermostat—plays a vital role in keeping your heating and cooling system running smoothly. When any of these parts fail or need maintenance, the entire system’s performance can suffer. CANRO Heating & Cooling specializes in Lennox HVAC component services across Greater Vancouver, offering expert care for everything from minor repairs to major replacements.
In this comprehensive guide, we’ll explore the function of each key Lennox HVAC component, common issues that may arise, and the services provided by CANRO Heating & Cooling to keep your system operating at peak efficiency. Whether you need regular maintenance, troubleshooting, or emergency repairs, our experienced technicians are here to help.
Essential Lennox HVAC Components and Our Expert Services
CANRO Heating & Cooling offers a wide range of services for Lennox HVAC systems, targeting all essential components to ensure reliable performance and a comfortable indoor environment. Here’s a closer look at some of the most critical parts and how we can help maintain or repair them.
Lennox Blower Motor Service
The blower motor is responsible for circulating air through your HVAC system, distributing warm or cool air throughout your home. If your blower motor isn’t working properly, you might notice weak airflow, strange noises, or even no air movement at all. CANRO’s blower motor services include:
- Blower motor inspection and cleaning
- Motor replacement if the existing unit is burnt out or damaged
- Lubrication and recalibration to enhance efficiency
Lennox Flame Sensor Maintenance
The flame sensor detects whether the gas burners in your
furnace are properly ignited, preventing unburned gas from accumulating in the furnace. A dirty or faulty flame sensor can cause the furnace to shut down unexpectedly. Our flame sensor services include:
- Cleaning the flame sensor to remove dirt and debris
- Testing for proper operation
- Replacement of the flame sensor if it’s malfunctioning
Lennox Control Board Troubleshooting
The control board is the brain of your HVAC system, managing functions like ignition, fan speed, and temperature control. When the control board fails, your furnace or
air conditioner may not operate at all. CANRO Heating & Cooling provides:
- Control board diagnostics to identify and resolve issues
- SureLight control board replacement if necessary
- Wiring and connection checks to ensure proper communication between components
Lennox Furnace Pressure Switch Service
The pressure switch monitors airflow within the furnace to ensure that combustion gases are vented correctly. If the pressure switch fails, it can prevent the furnace from running or cause it to shut off prematurely. Our pressure switch services include:
- Testing for proper pressure readings
- Replacement of faulty pressure switches to restore system function
- Adjustment and recalibration to optimize performance
Lennox Thermostat Upgrade
Upgrading your thermostat can significantly improve the comfort and efficiency of your HVAC system. Modern thermostats offer advanced features such as programmable schedules, Wi-Fi connectivity, and compatibility with smart home systems. Our thermostat services include:
- Installation of new thermostats with energy-saving features
- Troubleshooting and repair of existing thermostats
- Recommendations for thermostat models compatible with Lennox systems
Lennox Capacitor Replacement
The capacitor stores energy that helps start the blower motor and keep it running smoothly. When the capacitor fails, you may experience intermittent operation or failure of the blower. Our capacitor replacement services include:
- Testing capacitor functionality and replacing faulty units
- Ensuring that the new capacitor matches the motor specifications
- Inspections to prevent premature capacitor wear
Lennox Ignitor Repair
The ignitor is responsible for lighting the gas burner in your furnace. A faulty ignitor can prevent the furnace from starting, leaving you without heat. CANRO Heating & Cooling offers:
- Ignitor testing and diagnostics
- Ignitor replacement to restore heating function
- Calibration of ignition timing for efficient operation
Lennox Gas Valve Repair
The gas valve controls the flow of gas to the furnace’s burner assembly. If the gas valve malfunctions, the furnace may fail to ignite or operate erratically. Our gas valve services include:
- Testing and adjustment of gas flow
- Replacement of defective gas valves for safe operation
- Leak checks to ensure there are no gas leaks
Lennox Heat Exchanger Replacement
The heat exchanger transfers heat from the furnace’s combustion process to the air circulated through your home. A cracked heat exchanger can lead to dangerous carbon monoxide leaks. CANRO Heating & Cooling provides:
- Inspection for cracks or other damage
- Replacement of heat exchangers to restore safe operation
- Comprehensive testing for carbon monoxide leaks
Lennox Evaporator Coil Cleaning
The evaporator coil absorbs heat from the indoor air, providing cooling in the summer months. Over time, dust and debris can accumulate on the coil, reducing its efficiency. Our evaporator coil services include:
- Thorough cleaning to improve heat transfer
- Inspection for leaks or corrosion
- Replacement if the coil is damaged or severely clogged
Lennox Condenser Coil Service
The condenser coil expels heat to the outside air, playing a vital role in your air conditioning system. If the condenser coil is dirty or damaged, your system may overheat and lose efficiency. Our condenser coil services include:
- Cleaning of the coil to prevent overheating
- Replacement of damaged coils
- Regular maintenance to extend the life of the coil
Lennox Expansion Valve Repair
The expansion valve regulates the flow of refrigerant into the evaporator coil. If the expansion valve malfunctions, it can disrupt cooling efficiency. CANRO Heating & Cooling provides:
- Diagnostics to identify valve issues
- Repair or replacement of faulty expansion valves
- Calibration to ensure efficient refrigerant flow
Lennox Reversing Valve Maintenance
In
heat pumps, the reversing valve switches the direction of refrigerant flow, allowing the system to alternate between heating and cooling. Our reversing valve services include:
- Testing for correct operation
- Repair or replacement of stuck or malfunctioning valves
- Routine maintenance to prevent future issues
Lennox Draft Inducer Motor Replacement
The draft inducer motor removes combustion gases from the furnace and improves airflow for combustion. If the inducer motor fails, the furnace may shut down or operate inefficiently. We offer:
- Replacement of worn or malfunctioning inducer motors
- Testing and adjustment to ensure proper airflow
- Preventative maintenance to extend motor life
Lennox Limit Switch Service
The limit switch monitors the temperature within the furnace and shuts it off if it overheats. A faulty limit switch can cause frequent shutdowns or overheating. CANRO’s services include:
- Testing for accurate temperature regulation
- Replacement of malfunctioning limit switches
- Inspection for related issues, such as blocked airflow
Lennox Transformer Repair
The transformer adjusts the voltage to power the control board and other electrical components. When the transformer fails, it can prevent the furnace from starting. Our transformer services include:
- Diagnostic testing to confirm transformer issues
- Replacement with the correct voltage and amperage rating
- Inspection of electrical connections for stability
Lennox Relay Replacement
Relays control the electrical current for different components in the HVAC system. If a relay fails, parts of your system may not receive power. CANRO Heating & Cooling provides:
- Relay testing and replacement to restore function
- Verification of electrical connections
- Preventative maintenance to avoid future relay issues
Why Choose CANRO Heating & Cooling for Lennox Component Services?
CANRO Heating & Cooling has built a reputation across Greater Vancouver as a trusted provider of HVAC services, specializing in Lennox systems. When you choose us for your Lennox component services, you benefit from:
- Experienced Technicians: Our team has extensive training and experience working with Lennox systems, ensuring expert service and repairs.
- same-day Availability: We offer emergency services to address urgent issues promptly, keeping your home comfortable year-round.
- Quality Parts: We use only high-quality replacement parts that are compatible with Lennox systems, ensuring durability and reliability.
- Transparent Pricing: With CANRO, you’ll receive a clear, upfront estimate with no hidden fees, so you know exactly what to expect.
- Comprehensive Coverage: We serve all areas in Greater Vancouver, including Vancouver, Burnaby, Richmond, Surrey, Langley, Coquitlam, North Vancouver, West Vancouver, Delta, Maple Ridge, and more.
Contact CANRO Heating & Cooling for Your Lennox HVAC Needs
Don’t let a faulty component compromise the performance of your Lennox HVAC system. Contact CANRO Heating & Cooling for professional and reliable services that cover all your maintenance, repair, and replacement needs. Whether it’s a simple fix or a complex repair, our technicians are equipped to handle it all. Reach out to us today at 604-359-1081 or email us at
info@Canroheat.ca to schedule your service appointment or to request a free estimate.
With CANRO Heating & Cooling, you can trust that your Lennox system will be in the hands of experienced professionals, ensuring that your home stays comfortable, safe, and energy-efficient.
Expert insights: Lennox boilers in Metro Vancouver
Below is a CANRO technician's perspective on boilers as they apply in Metro Vancouver: what to look for, what to avoid, and what to expect. Lennox is American (Iowa, 1895), best known for its SLP99V variable-capacity gas furnace (up to 99% AFUE) and the XC25 air conditioner. The brand's strengths are industry-leading variable-capacity modulation, premium build quality, top-rated for quiet operation.
Metro Vancouver's coastal climate brings salt-laden air to coastal neighbourhoods (Steveston, Tsawwassen, White Rock) that accelerates outdoor coil corrosion — an important factor in equipment selection and placement. CANRO has worked with Lennox systems across Metro Vancouver since 1999, from older retrofits in Pitt Meadows and Norgate to new builds in Kitsilano and Port Moody. Lennox is generally a strong fit for mid-to-upper Vancouver homes wanting maximum efficiency and the quietest possible system.
Technical considerations for boilers in Metro Vancouver
Sizing. Boiler sizing depends on heat-loss calculations (Manual J for the home + emitter capacity check). Oversized boilers short-cycle, which is the single biggest cause of premature heat-exchanger failure in Vancouver hydronic installs.
Lifespan. A well-maintained condensing boiler typically lasts 15-20 years in Vancouver. Cast-iron heritage boilers can run 30+ years, but their efficiency (60-75% AFUE) often makes replacement worthwhile after 20 years on energy savings alone.
Warning signs. A failing boiler typically shows kettling (banging or whistling at start-up), expansion-tank pressure loss requiring frequent top-ups, sooty combustion residue, persistent error codes, or radiators that no longer balance.
Common Lennox boiler issues CANRO diagnoses
Over 25+ years of Lennox service calls across Metro Vancouver, the recurring issues we see are: flame-sensor fouling on older units, control-board failures on iComfort thermostats, blower-wheel ECM motor failures.
Parts availability. Lennox parts are dealer-network only — independent shops often struggle to source within 48 hours, but CANRO maintains a Lennox parts pipeline.
What CANRO checks during a boiler service
- Combustion analysis at low fire and high fire
- Heat-exchanger inspection (scale, soot)
- Expansion-tank pressure check and pre-charge
- Pressure-relief valve operation
- Circulator pump amp draw and bearing check
- Condensate trap and neutraliser inspection
- Gas-valve modulation test
- Igniter and flame-rod inspection
- Air separator and check valves
- System fill-pressure and air-purge
Why Metro Vancouver homeowners choose CANRO for boiler work
- Founded 1999 — over 25 years of a residential gas boiler installations and service calls in Metro Vancouver
- 4.9-star rating from 85+ verified Google reviews
- Direct workers, no subcontractors — the tech who installs your system is the one who answers when you call back
- Free written estimates on installations; transparent diagnostic fee on repairs (credited toward the repair if you proceed)
- TSBC-licensed gas fitter, Red Seal HVAC, WorkSafeBC and liability insured
- Permits filed and inspected on every gas-appliance install (BC Code-compliant)
- Brand specialist coverage: Viessmann, IBC, Baxi, Laars, Weil-McLain, Navien, Rinnai, Bradford White, Carrier, Lennox, Bryant, Goodman, Mitsubishi, Daikin, Bosch and more
Lennox Boiler FAQs
How often should a boiler be serviced?
Annual servicing is recommended for all residential boilers in Metro Vancouver. The service includes combustion analysis, heat-exchanger inspection, expansion-tank pressure check, condensate-trap cleaning, circulator pump check, and a full safety inspection. Annual maintenance is also required to keep most manufacturer warranties valid.
Should I repair or replace my 15-year-old boiler?
A useful rule: if the boiler is more than 15 years old and the repair cost is more than 50% of replacement, replacement is the better long-term investment because newer units run at 95%+ AFUE vs 75-82% for older models — paying back the difference in energy savings over 6-10 years. CANRO gives you both quotes and lets you decide.
How much does a new boiler cost in Metro Vancouver (Lennox)?
A typical residential high-efficiency gas boiler installation in Metro Vancouver costs $7,500-$15,000 depending on size, brand, and whether the system is heating-only or a combi unit also handling domestic hot water. Premium European brands (Viessmann, Baxi) sit at the upper end; North American brands (Navien, IBC, Rinnai) at the lower-middle.
What's the difference between a heating-only boiler and a combi?
A heating-only boiler heats only the hydronic loop (radiators, in-floor radiant, air-handler coil); a separate hot-water tank handles domestic hot water. A combi (combination) boiler heats both — eliminating the tank but requiring a higher-BTU boiler to handle peak DHW demand. Combi installs work best for 1-3 bathroom homes; heating-only + tank is usually better for 4+ bathroom homes.
My boiler keeps losing pressure — what's wrong?
Pressure loss indicates either: an expansion tank that has lost its air charge, a leak somewhere in the loop (often a tiny pinhole behind a radiator or under flooring), a weeping pressure-relief valve, or a faulty automatic fill valve. CANRO uses pressure-decay testing and infrared imaging to locate hidden leaks.
What is kettling — that banging sound from my boiler?
Kettling is a banging or whistling sound caused by limescale build-up on the heat exchanger, which creates localised overheating spots. It will not always cause immediate failure but it shortens boiler life significantly and should be addressed within a few weeks by descaling and water-chemistry correction.
Book Lennox boiler service in Metro Vancouver
To book Lennox boiler service or get a free written quote for installation, call CANRO at (604) 359-1081 or email info@canroheat.ca. We service all of Metro Vancouver including Pitt Meadows, Norgate, Kitsilano and Port Moody.
This guide was written by the CANRO Heating & Cooling team based on 25+ years of boiler installation, repair and annual service work across Metro Vancouver. Last reviewed May 2026.
