In Wisconsin's demanding climate, a well-maintained HVAC system isn't just about comfort—it's essential for business continuity, occupant health, and operational efficiency. At BREDAN Mechanical Systems, we've seen firsthand how proper preventive maintenance can dramatically extend equipment life, reduce energy consumption, and prevent costly emergency repairs. This guide outlines critical maintenance practices for commercial facility managers and building owners.

Why Preventive Maintenance Matters

Properly maintained HVAC systems deliver:

• 15-30% energy savings compared to neglected systems
• 2-3x longer equipment life
• 40-50% fewer emergency repairs
• Improved indoor air quality
• Maintained warranty coverage

Essential HVAC Maintenance Tasks

Monthly Tasks (or as needed):

Air Filter Inspection and Replacement

• Check filters monthly during peak seasons
• Replace when dirty or per manufacturer schedule
• Consider upgrading to higher MERV ratings for better air quality

Visual System Inspection

• Check for unusual noises, vibrations, or odors
• Inspect for visible leaks or corrosion
• Verify proper thermostat operation

Quarterly Maintenance:

Belts and Drives

• Inspect belt condition and tension
• Check pulley alignment
• Replace worn belts before failure

Electrical Connections

• Inspect all electrical connections
• Tighten loose terminals
• Check voltage and amperage

Semi-Annual (Spring and Fall):

Coil Cleaning

• Clean evaporator and condenser coils
• Remove debris from outdoor units
• Inspect for corrosion or damage

Refrigerant Check

• Verify proper refrigerant charge
• Check for leaks
• Test system pressures

Controls Calibration

• Calibrate thermostats and sensors
• Test safety controls
• Verify sequencing and staging

Lubrication

• Lubricate motors and bearings per specifications
• Check oil levels in compressors

Annual Comprehensive Service:

Detailed System Assessment

• Complete performance testing
• Efficiency measurements
• Indoor air quality evaluation
• Documentation and reporting

Combustion Analysis (for fuel-fired equipment)

• Test combustion efficiency
• Check flue gas composition
• Inspect heat exchangers

Building Automation System Review

• Review control sequences
• Update software/firmware
• Optimize schedules and setpoints

Wisconsin-Specific Considerations

Seasonal Transitions

Wisconsin's extreme temperature swings require careful system preparation:

• Spring: Prepare cooling systems, inspect cooling towers
• Fall: Prepare heating systems, inspect boilers and furnaces

Snow and Ice Management

• Keep outdoor units clear of snow and ice
• Ensure proper drainage
• Inspect rooftop equipment access

BREDAN's Preventive Maintenance Programs

BREDAN offers customized maintenance agreements tailored to your facility's specific needs:

Basic Program

• Scheduled filter changes
• Quarterly inspections
• Priority emergency response

Comprehensive Program

• All basic services plus:
• Semi-annual detailed service
• Controls optimization
• Detailed reporting and recommendations
• Guaranteed response times

Fully Managed Program

• Complete HVAC management
• 24/7 monitoring
• Predictive maintenance
• Budget planning and capital forecasting

Documentation and Compliance

Proper maintenance requires thorough documentation:

• Service reports and checklists
• Equipment performance data
• Maintenance history
• Warranty compliance verification

ROI of Preventive Maintenance

Investing in preventive maintenance typically provides 3-5x return through:

• Avoided emergency repair costs
• Extended equipment life
• Reduced energy consumption
• Maintained occupant productivity
• Preserved property value

Getting Started

For facilities in Waukesha, Milwaukee, and throughout Southeast Wisconsin, BREDAN Mechanical Systems offers:

• Free facility assessments
• Customized maintenance proposals
• Certified technicians
• 24/7 emergency support

Contact BREDAN today to develop a maintenance program that protects your investment and ensures reliable, efficient operation year-round.