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CA Pool Heater Pros

242 licensed contractors · 1 heater specialist

Pool heater & swimming pool contractors in San Diego County

This page lists 242 California-licensed swimming pool contractors based in San Diego County, including businesses in San Diego, El Cajon, Escondido. Each listing is matched to a CSLB license that was active and unexpired when we last updated our data. One business names pool heaters, heat pumps or solar in its business name and is shown first.

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Hiring in San Diego County

Not every pool contractor installs every type of heater. Before hiring, confirm that the contractor installs or services the heater you want (heat pump, gas or solar), get 2–3 written quotes, check the license on CSLB's Instant License Check and ask who will pull the permit.

Frequently asked questions

How do I check that a San Diego County pool contractor is licensed?

Search the contractor's license number or business name on the CSLB Instant License Check. Look for a current, active status and the classification that fits your job (C-53 is Swimming Pool), and make sure the business name on your contract matches the license record.

Can a pool contractor install or repair my pool heater?

Many can, but not all. CSLB's C-53 Swimming Pool classification covers building pools, spas and hot tubs, including installing solar heating equipment. Gas lines and electrical circuits may involve other licensed trades. Ask each contractor whether they install and service the specific heater type and brand you want. See our hiring guide.

Do I need a permit to install a pool heater in San Diego County?

Rules vary by city and county. Installing new equipment often involves building, electrical, plumbing or gas permits, so check with your local building department. Your licensed contractor normally applies for the permit; ask for the permit number and keep the final inspection record.

Heat pump, gas or solar: which is best?

Each has trade-offs. Gas heaters heat quickly and hold temperature in any weather; heat pumps usually cost more up front but have lower running costs; solar has low operating costs but depends on sunshine. Read our heat pump vs. gas guide.