Ask us anything

Does Carrier Commercial HVAC have a recommended maintenance schedule for heat exchangers in its boilers and furnaces, such as the Carrier Comfort™ 80 Gas Furnace?

Carrier Commercial HVAC typically provides recommended maintenance schedules for its boilers and furnaces, including models like the Carrier Comfort™ 80 Gas Furnace. Proper maintenance is crucial for ensuring the efficient and safe operation of heating equipment. While the specific maintenance requirements may vary depending on usage, climate, and other factors, here's a general guideline for maintaining heat exchangers in gas furnaces:

Annual Maintenance:
* Visual Inspection: Perform a visual inspection of the heat exchanger. Look for any signs of corrosion, cracks, or damage. If you notice any issues, contact a qualified HVAC technician for further evaluation.
* Clean Exterior: Gently clean the exterior of the furnace, removing dust and debris that may have accumulated. Ensure that there are no obstructions around the unit's intake and exhaust vents.

Bi-Annual Maintenance (Fall and Spring):
* Filter Replacement: Replace or clean the furnace air filter every 1-3 months, depending on the type and condition of the filter. A clean filter ensures proper airflow and prevents strain on the heat exchanger.
* Check Flue and Venting: Inspect the flue and venting system for any blockages, obstructions, or signs of corrosion. Ensure that the exhaust gases are venting properly to the outside.

Professional Maintenance (Annually):
* Combustion Analysis: Schedule a professional HVAC technician to perform a combustion analysis to ensure that the furnace is burning fuel efficiently and safely. They will adjust the burner for optimal combustion.
* Heat Exchanger Inspection: A qualified technician should perform an in-depth inspection of the heat exchanger for any cracks, leaks, or deterioration. The heat exchanger is a critical component, and any issues should be addressed immediately.
* Gas Valve and Ignition System Inspection: The technician should inspect the gas valve and ignition system for proper operation and safety.
* Safety Controls Testing: Verify that all safety controls, including limit switches and pressure switches, are functioning correctly.
Pilot Light and Flame Sensor Inspection: Ensure the pilot light or ignition system and the flame sensor are clean and functioning properly.
* Lubrication: Lubricate the blower motor and other moving parts as recommended by the manufacturer.
* Thorough Cleaning: Clean the interior components of the furnace, including the burners and the blower assembly, to remove dust and debris that can affect efficiency.
* Test Carbon Monoxide (CO) Levels: Test for the presence of carbon monoxide to ensure there are no leaks in the heat exchanger.

Additional Considerations:
If your Comfort™ 80 Gas Furnace is used year-round for both heating and cooling, consider servicing it twice a year, once for heating and once for cooling.
Always follow the manufacturer's maintenance guidelines and recommendations provided in the product's manual.
Ensure that only qualified and certified HVAC technicians perform maintenance on your heating equipment to maintain safety and warranty coverage.

A well-maintained heat exchanger in your gas furnace is essential for efficient and safe heating. Regular inspections, cleanings, and professional maintenance can help identify and address issues early, prolonging the life of your furnace and ensuring your comfort and safety.

Connect to virtual expert

Our virtual experts can diagnose your issue and resolve simple problems.