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Sure, I can come this afternoon. Before I head over, can you check a couple things? First, is the thermostat set to 'cool'? And second, is the outdoor unit running?

That could be a refrigerant issue or a failing compressor. I'll bring my gauges and check the pressure. The service call is $85, which covers the first hour of labor.

I can be there by 2 PM. In the meantime, keep the windows closed and try not to run the system — running it with low refrigerant can damage the compressor further.

Sounds good. If you have pets, please make sure they're secured — I'll need access to the air handler, which is usually in a closet or utility room.

Absolutely. I recommend a tune-up twice a year — once in spring before cooling season and once in fall before heating season. It catches problems early and extends the life of your system.

We check refrigerant levels, clean the coils, replace the air filter, test the thermostat calibration, inspect electrical connections, and lubricate moving parts.

Our annual plan is $180 for two visits. It includes priority scheduling, 15% off parts, and no service call fee if something breaks between visits.

Every one to three months, depending on whether you have pets or allergies. A dirty filter makes the system work harder and drives up your energy bill. It's a $5 filter that can save you hundreds.