Minnesota (MN) Commercial Furnace Repair Air Conditioning (AC) Service Installation

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Commercial Maintenance Program

The comfort of everyone on site is essential to operating a successful business. The preventative maintenance on your heating and cooling equipment will help prolong the life of your HVAC systems. We constructed a maintenance program for our commercial customers that offers in depth tune ups and photos for documentation. Annual Maintenance Agreement which includes 4 visits: Our first visit will include a full report with photo documents of condition of equipment and work performed. All subsequent visits will also include photo documentation and full reports including necessary and suggested repairs.

Spring- Visually inspect condition of air conditioning and economizer system.

Clean evaporator coil with commercial specially formulated cleaners for commercial grade equipment.
Clean condenser with specially formulated cleaners for commercial grade equipment, splitting coils if necessary.
Check all motors and fan blades for proper operation, oil and check bearing condition.
Check delta-T across evaporator coil.
Check delta-T across Condenser coil.
Check subcooling/ superheat.
Check refrigerant levels including 2 stage cooling units.
Check operation of economizer and clean economizer filter.
Check capacitance of all capacitors.
Change filters with date on filters and a photo confirmation.
Check compressor current draw.
Check oil levels (if applicable).
Check and clean condensate pan.
Check all electrical connections and tighten if needed.
Check all compressor safeties including, but not limited to, high pressure, low pressure, and overload protection.
Check TXV and adjust if necessary

Summer- Visually inspect condition of air conditioning and economizer system.

Check refrigerant levels and operation of unit.
Check multi compressor functionality.
Change filters and belts with date on filters and a photo confirmation and leave a spare belt in every unit.

Fall- Visually inspect condition of heating and economizer system.

Change filters with date on filters and a photo confirmation.
Visually inspect heat exchanger for cracks, corrosion, or breaches of any kind.
Check overall operation of unit.
Full ORSAT combustion analyzation including checking gas pressure, Co, Co2, O2 levels, flue temperature, heating efficiency.
Check performance of all motors including amp draws oil and check bearings condition.
Check capacitance of all capacitors.
Check amp draw and clean flame sensors.
Check all safety switches for proper operation, including but not limited to limit switch, rollout switch(s), and pressure switch.
Check burner assembly operation with flame condition.