Air Conditioning Repair | Oakland & Macomb County

The short answer

Start with the complete system and the evidence

An air conditioner can lose cooling because of airflow, refrigeration, electrical, control, or drainage problems. Sandison checks the indoor and outdoor equipment together and explains the evidence behind the recommended repair.

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

Cooling diagnosis

A no-cool complaint is not automatically a refrigerant problem

Cooling capacity depends on airflow, refrigeration, heat rejection, electrical operation, controls, drainage, and the load on the building. Sandison documents thermostat demand, indoor and outdoor equipment operation, filter and coil condition, blower behavior, return and supply restrictions, condensate management, electrical components, line-set condition, and applicable temperature or pressure evidence. Adding refrigerant without identifying why the charge is low does not repair a leak, and replacing a capacitor does not correct an overheated attic, restricted duct system, or failing motor.

Repair limits and next steps

The recommendation separates an immediate repair from the condition of the whole system

A successful service call should explain what failed, what contributed to it, and what remains. Sandison distinguishes a component repair from maintenance needs, airflow corrections, drainage risk, refrigerant-leak investigation, electrical work, or replacement planning. Equipment age and refrigerant type are considered, but they do not replace operating evidence. When a system can be restored safely, the repair path is explained; when continued operation presents poor reliability or disproportionate cost, the owner receives the reasons and connected-system requirements behind the replacement option.

Primary references

Verify the local and credential information.

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

Common questions

What property owners ask

Why is my air conditioner running but not cooling?

Restricted airflow, dirty coils, electrical faults, controls, and refrigeration problems are among the conditions that need to be separated. The affected rooms, thermostat demand, and indoor and outdoor operation guide the inspection.

Will adding refrigerant fix my air conditioner?

Refrigerant should be evaluated alongside airflow and operating measurements. If the system has lost refrigerant through a leak, adding charge alone leaves the source of that loss unresolved.

Why does my AC problem come and go?

Intermittent faults may depend on equipment temperature, electrical operation, controls, drainage, or changing load. Note the weather, time, thermostat setting, and which equipment was running when the problem occurred.

Evidence and review

Why this page can be trusted

Service information based on Sandison’s documented trade scope and the technical references below. Contact the office to discuss the conditions at your property.

Technical lead: James Sandison, B.S. Mechanical Engineering, Oakland University. Michigan Mechanical License 7115733 · Michigan Master Plumber 8112263 · Michigan Plumbing Contractor 800-3618. Service information record: 2026-08-28.