AC articles
Plain answers for San Diego homes: whether you need air conditioning, how often to change the filter, and how to think about repair or replacement.
AC acting up at home? Call the number on this page or send the form, and an independent local AC contractor can contact you about it.
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Repair or replace your AC: questions to ask
Repair or replace your AC? The questions to ask the contractor, what has changed in new systems since 2025, permits and testing, and how to compare prices.
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How often should you change your AC filter?
How often to change your AC filter: ENERGY STAR says inspect, clean or change it once a month. Where to find it, what a dirty filter does, and when to…
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Do you need air conditioning in San Diego?
Do you need air conditioning in San Diego? What NOAA’s normals show, how coast and inland differ, heat waves, and the options if you decide to add cooling.