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TRUSTED BY ALTADENA, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon118
    Verified pool and spa services reviews

Top-Rated Pool and spa technicians in Altadena - Updated Nov 2026

Avatar for Joy Pool Service
Joy Pool Service
4.8(
42
)
Swimming Pool - Clean and Maintain

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Emergency services offered

"Jose Is amazing! I had a previous pool cleaning service company handle my pool and they were no where near as good as Jose. Jose was able to find the leak in my pool when others couldnt. Highly recommended Jose! He makes the pool water crystal clear and clean! Amazing work!"
Response time6 hrs
Response rate92%
Recommended by86%of homeowners
Avatar for Commercial Pool & Spa Services
Commercial Pool & Spa Services
4.7(
34
)
In Ground Swimming Pool or Accessories - Repair or ServiceSwimming Pool Heaters - Install or Replace

Serving Altadena, CA and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"After other businesses failed to respond to my requests for help, Commercial Pool & Spa was prompt to respond. It got better from there. Both the office representative and the service technician communicated effectively by phone and text. The tech visited within hours, reviewed the site, quoted the work, and scheduled work for the following day. The tech was delayed but communicated by text to keep me informed. The work was started and completed in a timely manner. The spa now looks fantastic, and I am extremely pleased with the results and the overall experience provided by this service. I'll use them again and can recommend them to others."
Green Pool
After Green Pool Clean
Installing Pump Motor
Fixing Handrail
Repairing Chlorinator

+88

Response time2 days
Response rate86%
9 neighbors recently requested a quote
Avatar for BETTER BUY POOL SUPPLY INC.
BETTER BUY POOL SUPPLY INC.
4.2(
139
)
Swimming Pool - Clean and Maintain

Serving Altadena, CA and surrounding areas

Approved

In business since 1991

Free estimates

Credit card accepted

"I hired Scott to fix our pool heater. He is very honest and charged me a very reasonable rate to replace the circuit board. He was also able to get our solar heater working again and helped troubleshoot an issue with our dirty pool filter. Highly recommended!"
Gallery
20 neighbors recently requested a quote
Recommended by92%of homeowners
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Pool and Spa Servicing FAQs, answered by experts

Hot tub maintenance can cost between $500 and $1,000 annually. These costs typically cover deep cleaning the tub, refilling it several times a year, and maintaining the water's chemical balance. While you can perform maintenance yourself, a professional can clean and treat your hot tub with chemicals to save you time. The biggest expenses are often heating and repairs, but regular maintenance can help you avoid more complicated and costly repairs and preserve your investment.

Biofilm growth can cause a hot tub to feel slimy. Hot tub biofilm is a slimy substance that’s typically due to natural contaminants like makeup, soaps, skin oils, deodorants, or lotions. A hot tub can also have a slimy interior or slimy water if the tub’s filters are old or damaged, or if the hot tub isn’t properly cleaned. You should drain your hot tub, wipe away any slimy residue, then refill the water and use a spa purge product that prevents the buildup of biofilm.

Though a hot tub has many benefits, there are a few cons. Mainly, hot tubs require a lot of maintenance. You’ll need to deep clean yours quarterly, test the pH at least once or twice a week, and add sanitizing chemicals once a week. They also have relatively high ongoing costs since you’ll need to pay for electricity and repairs. 

For a fully-foamed hot tub, freezing typically occurs when the temperature drops below 28 degrees Fahrenheit and remains at or below this level continuously for a minimum of 36 hours. If your hot tub and pumps are still operational, however, the water circulates, and this continuous movement helps prevent freezing, even in very cold conditions. This circulation, along with the insulation provided by the foam, helps maintain the water temperature and prevent it from freezing during extended cold periods. Still, if you’re not planning to run it regularly, be sure to winterize the hot tub properly to prevent damage from freezing.

Yes. If you test the water and the alkalinity is too low, you can raise it by adding an alkalinity increaser, which likely came with your hot tub’s chemical kit. In a pinch, you can use baking soda to raise the hot tub’s alkalinity. Raising the alkalinity will prevent the hot tub water from becoming too acidic.

The Altadena, CA homeowners’ guide to pool and spa services

From average costs to expert advice, get all the answers you need to get your job done.