460 licensed businesses
Spas & Hot Tubs in California
Spas and hot tubs are often kept warmer than the pool they are attached to, so heater choice and controls matter. These licensed contractors mention spas or hot tubs in their business name.
Why choose this
- Familiar with spa equipment, controls and heaters.
- Can often handle both a pool and an attached spa.
- The C-53 classification covers spas and hot tubs as well as pools.
Things to consider
- Some spa businesses mainly sell portable hot tubs; ask whether they do built-in installs.
- An attached spa may need more heat than the pool alone; make sure the heater suits both.
- Electrical work for portable spas may need a licensed electrician.
Questions to ask
- The contractor's CSLB license number, so you can confirm it on CSLB's Instant License Check.
- Who pulls the permit (and any separate electrical, plumbing or gas permit) and whether permit fees are included.
- The heater make, model and output, and how they sized it for your pool. Ask them to show the calculation.
- Warranty terms: manufacturer warranty on the equipment and the contractor's own warranty on labor.
- Whether the heater will serve the pool, the spa or both, and how quickly it heats the spa.
- Controls and automation for switching between pool and spa.
Spas & Hot Tubs by county
- Los Angeles 108
- Riverside 76
- Orange 42
- San Diego 41
- San Bernardino 34
- Ventura 32
- Santa Clara 16
- Sacramento 12
- Placer 10
- Contra Costa 9
- San Joaquin 9
- Sonoma 9
- Fresno 8
- Kern 8
- Stanislaus 7
- Solano 4
- Tulare 4
- El Dorado 3
- San Luis Obispo 3
- Santa Cruz 3
- Mendocino 2
- Merced 2
- San Mateo 2
- Santa Barbara 2
- Shasta 2
- Alameda 1
- Butte 1
- Calaveras 1
- Humboldt 1
- Imperial 1
- Kings 1
- Lake 1
- Madera 1
- Marin 1
- Monterey 1
- Napa 1
- Nevada 1
Frequently asked questions
Can solar heat my spa?
The U.S. Department of Energy notes that spa owners may use a solar system to heat both the pool and the spa, but usually use a backup heater to get the spa to a higher temperature.
Who can install a heater for a built-in spa?
A licensed contractor. CSLB's C-53 Swimming Pool classification covers swimming pools, spas and hot tubs. Confirm the license on CSLB's Instant License Check before signing.