Air Conditioning Maintenance | Oakland & Macomb County

The short answer

Start with the complete system and the evidence

The first visible symptom does not always identify the actual failure. Sandison documents operating condition, connected components, safety concerns, access, and the evidence needed to choose a defensible next step.

What Sandison evaluates

A practical path from symptoms to the right scope

Clear diagnostic process
Licensed multi-trade coordination
Repair and replacement options
Residential and commercial support

Scope and system boundary

Air Conditioning Maintenance begins with the installed system and the specific failure

Cooling maintenance records filter and coil condition, blower and condenser cleanliness, condensate drainage, electrical wear, controls, temperature behavior, accessible refrigerant indicators, and defects requiring separate repair authorization. Cooling diagnosis checks thermostat demand, indoor airflow, filter and coil condition, blower operation, condensate management, outdoor coil and fan, electrical components, controls and safeties, refrigeration behavior, and the timing and location of the comfort complaint. The purpose is to identify the failed function, its effect on the property, and the accessible evidence—not to force every symptom into the same repair menu. Sandison records conditions that belong to another trade, utility, manufacturer, restoration provider, or design professional instead of hiding them inside an equipment recommendation.

Decision and verification

The air conditioning maintenance recommendation should show why the next step fits

Maintenance, a component repair, airflow correction, drainage work, controls, duct changes, or system replacement are separated by measured performance, refrigerant and electrical evidence, failure history, compatibility, and load. The record can include supply and return temperatures, static pressure, electrical values, coil and drainage condition, fault history, refrigeration observations made by a qualified technician, and post-repair operation. The written scope separates included work, permit or inspection questions, concealed conditions, owner responsibilities, exclusions, and the verification expected after completion. Availability, exact pricing, warranty coverage, and project duration are confirmed for the actual property rather than promised by a general service page.

Primary references

Verify the local and credential information.

U.S. Department of Energy — air-conditioning guidance

Common questions

What property owners ask

How does Sandison evaluate air conditioning maintenance?

Sandison starts with the symptoms, the property, the connected systems, and observable evidence before recommending repair, replacement, maintenance, or further testing.

Can I request service for air conditioning maintenance online?

Yes. Submit a non-emergency service request for review, or call the office during business hours. For an urgent active failure, call the emergency number directly.

Does Sandison serve both homes and commercial properties?

Yes. Sandison serves homeowners, property managers, businesses, and institutional facilities throughout Oakland and Macomb Counties.

Evidence and review

Why this page can be trusted

Owner-reviewed Sandison service record and verified Michigan trade scope.

Author and qualified trade reviewer: James Sandison, B.S. Mechanical Engineering, Oakland University. Michigan Mechanical License 7115733 · Michigan Master Plumber 8112263 · Michigan Plumbing Contractor 800-3618. Last reviewed 2026-08-28.