Hot Tub Cost Calculator

Hot tub costs range from $300 to $30,000+ depending on type. Inflatable hot tubs cost $300–$800, rotomolded (plug-and-play) $2,000–$5,000, acrylic $4,000–$10,000, and in-ground custom-built $15,000–$30,000. Add $500–$2,000 for electrical hookup, $500–$2,000 for a concrete pad, and $500–$3,000 for a cover or gazebo. Larger seating capacity (6–8 person) adds 10–20% to the base price.

Monthly hot tub operating costs average $50–$100 for electricity depending on size, insulation, and climate. Breakdown: electricity $30–$60/month (120V models less, 240V models more), chemicals $15–$25/month (chlorine or bromine, pH balancers, shock), water $5–$10/month (refill every 3–4 months at $20–$40). Well-insulated hot tubs with quality covers cost less to heat. Cold climates increase heating costs by 20–40%.

A concrete pad ($500–$2,000) is recommended for all hot tubs except inflatables on decks. A filled hot tub weighs 3,000–6,000 lbs — most ground surfaces can't support this. Options: 4-inch concrete slab ($6–$10/sq ft, best option), reinforced deck (must support 100+ lbs/sq ft), paver patio with compacted gravel base ($8–$15/sq ft). The pad should be level within 1/4 inch and extend 2–3 feet beyond the hot tub on all sides for access.

Most acrylic and in-ground hot tubs need a dedicated 240V/50-amp circuit ($500–$2,000 for installation). Requirements: GFCI breaker (code required), 6-gauge copper wire, disconnect box within 5 feet of tub (but not reachable from water). Plug-and-play models (rotomolded, inflatable) use standard 120V/15-amp outlet — no special wiring needed, but heating is slower. Electrical work must be done by a licensed electrician and inspected per NEC code.

Hot tub lifespan varies by type: inflatable 1–3 years, rotomolded 5–10 years, acrylic 15–20 years, in-ground 20–30+ years. Key factors affecting longevity: water chemistry maintenance (test 2x/week), cover quality (prevents UV damage and heat loss), pump and heater maintenance (service annually), and climate (freeze damage in cold areas). Replace the cover every 3–5 years ($200–$500). Pump replacement costs $200–$600, heater $200–$500.

Inflatable hot tubs ($300–$800) are best for renters, temporary use, or testing if you'll use a hot tub regularly. Pros: portable, no installation, cheap. Cons: fewer jets (2–4), slow heating, 1–3 year lifespan, higher energy costs. Acrylic hot tubs ($4,000–$10,000) are better for permanent installation and regular use. Pros: 20–60 jets, faster heating, 15–20 year lifespan, better insulation. Cons: requires electrical hookup, concrete pad, not portable.

Permit requirements vary by location. Most areas require: electrical permit for 240V hookup ($50–$200), building permit if adding a deck or structure ($100–$500). Some jurisdictions require: fencing around hot tub (same as pool code), setback from property lines (5–10 feet), GFCI protection inspection. Check with your local building department before installation. In-ground hot tubs almost always require a building permit and may need engineering plans.

Installation timeline depends on type and site preparation. Inflatable: 30 minutes to set up, fill in 2–4 hours. Plug-and-play rotomolded: delivery + placement in 1 day, no electrical work needed. Acrylic with electrical: 2–5 days total (1 day concrete pad pour + 3 days cure, 1 day electrical, 1 day delivery/setup). In-ground: 2–6 weeks (excavation, plumbing, electrical, concrete, tile/finish). Plan electrical work 1–2 weeks ahead to schedule an electrician.