Keeping your heating system properly maintained is one of the most effective ways to ensure dependable comfort throughout the winter months in Southern and Metro East Illinois. With temperatures dropping well below freezing in counties like Fayette, Effingham, Montgomery, Bond, Madison, and St. Clair, a well-tuned heating system is essential—not only for comfort but also for efficiency, safety, and peace of mind.

For more than 45 years, Mars Plumbing & Heating, Inc. has provided professional heating maintenance that helps homeowners reduce costly repairs, extend the life of their equipment, and keep energy bills under control. Our licensed and insured HVAC technicians deliver thorough inspections, detailed cleaning, and performance testing designed to keep your system operating at its best throughout the entire heating season.

Why Heating Maintenance Matters

Regular maintenance is recommended by system manufacturers, utility companies, and HVAC professionals because it prevents small issues from developing into major problems. A neglected furnace, boiler, or heat pump is far more likely to experience breakdowns—often at the worst time of year. Annual tune-ups help ensure your system stays reliable through the coldest weeks in Southern Illinois and the Metro East region.

A properly maintained system also operates more efficiently, which translates to lower monthly heating costs. Something as simple as a dirty blower motor or clogged filter can cause your system to work harder than necessary, wasting energy and increasing wear and tear.

What’s Included in Our Heating Maintenance Service

Our maintenance service is comprehensive and designed to support peak system performance. During your appointment, our technicians:

• Inspect burners and combustion components
• Check and clean heat exchangers
• Lubricate moving parts
• Inspect the blower motor and fan assembly
• Test safety switches and system controls
• Check ignition system and flame sensors
• Evaluate flue and venting components
• Replace or clean air filters (customer provided or available)
• Inspect ductwork for airflow issues
• Test thermostat accuracy and communication
• Measure temperature rise and heating output

This level of detail ensures your heating system is safe, efficient, and ready for heavy seasonal use.

Maintenance for All Heating System Types

Southern & Metro East Illinois homes rely on a variety of heating systems—and we maintain them all.

Furnace Maintenance

Gas and electric furnaces require yearly tune-ups to ensure proper combustion, airflow, and temperature control. Dirty burners, worn ignitors, and clogged filters can cause inefficient operation or sudden shutdowns. Our technicians provide a full inspection and cleaning to keep your furnace running smoothly.

Boiler Maintenance

Boilers are known for longevity, but they still require annual inspections to check water levels, pressure, circulation, and combustion performance. Whether your home is in Effingham, Belleville, Vandalia, Edwardsville, or anywhere across our service region, we maintain hydronic boilers to ensure consistent, trouble-free heat.

Heat Pump Maintenance

Heat pumps operate throughout the year, making routine maintenance especially important. We check refrigerant levels, inspect coils, verify reversing valve operation, and ensure the system is ready for winter heating demands.

Ductless Mini-Split Maintenance

Ductless systems require filter cleaning, coil inspections, and component testing to ensure proper heating output. Our team maintains single-zone and multi-zone ductless systems across Southern Illinois homes.

Benefits of Annual Heating Maintenance

Homeowners throughout Southern & Metro East Illinois benefit from:

• Fewer mid-season breakdowns
• Lower utility bills due to improved efficiency
• Longer lifespan of heating equipment
• Better indoor air quality
• More consistent home comfort
• Compliance with manufacturer warranty requirements

Preventive care is one of the most cost-effective steps you can take to protect your heating investment.

Why Homeowners Choose Mars Plumbing & Heating

• More than 45 years serving Southern & Metro East Illinois
• Family-owned and dedicated to honest service
• Licensed, insured, and highly trained HVAC technicians
• Thorough inspections and detailed system cleaning
• Upfront pricing and transparent recommendations
• 24/7 live answering for questions or scheduling
• Service coverage across Fayette, Effingham, Montgomery, Bond, Madison, St. Clair, and surrounding counties

Whether you live in a rural home in Fayette County or a suburban neighborhood in Madison and St. Clair counties, we’re here to deliver reliable, long-lasting heating performance.