Spas and Hot Tubs: maintenance schedule
17 tasks. Times and costs are estimates; see How We Estimate.
Daily
- Water testing (chlorine, pH, alkalinity, calcium hardness) — 10 min, year-round. DIY: yes ($30-80 (test kit one-time, strips $10-20 ongoing)); pro: $0.
Test free chlorine (2-4 ppm ideal), pH (7.4-7.6 ideal), total alkalinity (80-120 ppm ideal), and calcium hardness (200-400 ppm ideal). Use DPD test kit for accuracy. First step to identify water balance issues before they escalate.
If skipped: Untreated chemical imbalances lead to algae growth, bacterial contamination, equipment damage, corrosive water, cloudy water, health hazards to swimmers - Visual pool inspection — 5 min, year-round. DIY: yes ($0); pro: $0.
Visually inspect for algae growth, debris, water clarity, equipment operation, unusual odors, leaks, or surface damage. Quick sweep of pool area.
If skipped: Early warning signs of problems missed, small issues become expensive repairs, safety hazards undetected - Chlorine adjustment — 10 min, spring, summer, fall. DIY: yes ($30-60 per month (chlorine costs)); pro: $0.
Maintain free chlorine at 2-4 ppm (ideal 2-3 ppm). Use liquid chlorine, chlorine tablets, or for saltwater systems, salt chlorine generator. LA intense summer sun depletes chlorine rapidly.
If skipped: Algae blooms within 24-48 hours, bacterial contamination, green/cloudy water, health hazards, expensive algae removal ($200-500+) - Spa temperature management — 5 min, year-round. DIY: yes ($0); pro: $0.
Maintain spa at 98-104°F (ideally 100-102°F). Higher temps require more frequent chlorination and chemical adjustment. LA weather affects heating costs significantly.
If skipped: Temperature fluctuations stress water chemistry, bacterial growth accelerates in cooler water, high temps deplete chlorine faster
Weekly
- Skimmer basket cleaning — 5 min, summer. DIY: yes ($0); pro: $0.
Empty debris (leaves, insects, dirt) from skimmer baskets. In LA summer with heavy use, check 2-3 times weekly. Remove basket and dump contents into trash.
If skipped: Clogged skimmer reduces water circulation, decreased filtration efficiency, algae growth, equipment strain - Pump strainer basket cleaning — 10 min, summer. DIY: yes ($0); pro: $0.
Clean the pump strainer basket (pre-filter) which catches debris before it reaches the pump. Shut off pump, open strainer housing, remove and clean basket.
If skipped: Debris clogs pump strainer, causes pump to lose prime, equipment shutdown, potential pump damage - Pressure gauge check — 2 min, year-round. DIY: yes ($0 (gauge included on filter)); pro: $0.
Check filter pressure gauge to monitor filter cleanliness. Normal range varies by filter type (usually 10-20 psi). If pressure rises 8-10 psi above baseline, backwashing needed.
If skipped: Filter clogs undetected, water circulation decreases, algae growth accelerates, equipment strain leads to failures - Filter backwash — 15 min, spring, summer, fall. DIY: yes ($0 (except DE replacement at backwash: $5-15)); pro: $0.
Reverse water flow through filter to flush accumulated debris. For DE filters: turn off pump, switch multiport to backwash, turn on, flush until water runs clear, switch to normal. For sand filters: same process but watch sight glass. LA summer heat increases debris.
If skipped: Filter clogs completely, circulation stops, algae blooms, equipment damage, expensive professional filter cleaning or replacement ($500-1500) - Chemical balancing - alkalinity correction — 15 min, year-round. DIY: yes ($5-10 per adjustment); pro: $0.
Adjust total alkalinity to 80-120 ppm range FIRST before pH adjustment. Add alkalinity increaser or decreaser according to test results. Critical - always correct alkalinity before pH.
If skipped: pH becomes unstable, impossible to maintain proper chlorine levels, water becomes corrosive or scaling, equipment damage within weeks - Chemical balancing - pH adjustment — 15 min, year-round. DIY: yes ($5-15 per adjustment); pro: $0.
Adjust pH to 7.4-7.6 after alkalinity is corrected. Add pH increaser or pH decreaser (sodium carbonate/muriatic acid). LA hard water tends toward high pH.
If skipped: Uncomfortable for swimmers (eye irritation), chlorine ineffective, surface etching, equipment corrosion, algae growth unchecked
Monthly
- Filter cartridge/sand cleaning — 30 min, spring, summer, fall. DIY: yes ($10-30 (cleaning solution once per season)); pro: $150-250 (professional filter cleaning).
Deep clean filter media. For cartridge: remove from tank, rinse with garden hose, soak in cleaning solution if heavily soiled. For sand: use filter cleaner or backwash multiple times. Extend filter life by 1-2 years.
If skipped: Filter degrades, needs replacement sooner ($300-800), water quality declines, chlorine ineffectiveness increases - Equipment inspection (pump, filter, heater) — 10 min, year-round. DIY: yes ($0); pro: $0.
Visual inspection of pump for leaks, filter tank for cracks, heater for proper operation. Listen for unusual noises. Check all connections and gauges. Early detection saves thousands.
If skipped: Small leaks become floods, filter cracks cause water loss, equipment fails catastrophically, expensive emergency repairs ($500-2000+) - Chemical inventory management — 15 min, year-round. DIY: yes ($0); pro: $0.
Track chemical inventory, storage conditions, expiration dates. Store in cool, dry place away from sunlight. Expired chemicals less effective. LA heat degrades chemicals faster.
If skipped: Uses expired, ineffective chemicals, wasted money, water quality issues from degraded products
Annual and seasonal
- Pool opening (spring) — 120 min, spring. DIY: yes ($50-150 (chemicals for opening)); pro: $300-600 (professional opening).
Remove winter cover, inspect for damage, clean debris, start pump/filter, chemically treat water (shocking, balancing), brush and vacuum. LA pools may not need full winterization but spring cleaning essential.
If skipped: Water unusable for weeks, equipment damage from inactivity, algae blooms, expensive recovery - Equipment maintenance (o-rings, gaskets, pump bearings) — 60 min, fall, winter. DIY: yes (for basic replacement) ($30-80 (service supplies)); pro: $200-400 (professional service).
Replace pump o-rings, filter gaskets, heater connections annually to prevent leaks. LA hard water causes mineral buildup; annual service extends equipment life 2-5 years.
If skipped: Leaks develop within 3-6 months, equipment fails prematurely, replacement costs $500-2000+ - Heater inspection and filter cleaning — 120 min, fall. DIY: no (requires certification for gas units) ($0 (professional only)); pro: $100-300 (inspection/cleaning).
Professional heater inspection recommended annually. Check gas/electric connections, inspect heat exchanger for scaling (LA hard water issue), clean or descale as needed.
If skipped: Heater efficiency drops 20-30% annually, hard water scaling reduces lifespan from 10-15 years to 5-8 years
As needed
- Cloudy water clarification — 15 min, summer. DIY: yes ($10-20 (clarifier)); pro: $0.
Add pool clarifier to aggregate fine particles into larger clumps for filter to catch. Wait 24 hours, then backwash. LA dust and pollen contribute to cloudiness.
If skipped: Cloudiness persists, filter becomes clogged faster, visibility hazard for swimmers, possible algae growth
Related pages
- Spa/Hot Tub (200-400 gallons) (annual maintenance $400–$1,200)
- Combined Pool + Spa (15k pool + 300g spa) (annual maintenance $1,500–$3,200)
- Chemical Dosing Calculator (Comprehensive)
- pH Adjustment Calculator
- Alkalinity Adjustment Calculator
- Salt Level Calculator
- Annual Maintenance Cost Calculator
- Saltwater vs Chlorine Cost Comparison
- Common pool problems and repairs
- Equipment guides