Indoor Pool Cost Calculator Free Online
Thinking about bringing the luxury of a pool indoors? An indoor swimming pool offers year-round relaxation, privacy, and fitness opportunities. Use our Indoor Pool Cost Calculator to estimate your installation and maintenance expenses, including materials, structure, HVAC, and moisture control systems.
Why Install an Indoor Pool?
An indoor pool provides unparalleled convenience and comfort. Whether for health, family fun, or luxury living, it transforms your home into a private retreat.
- Key benefits:
- Reduced cleaning and maintenance (no debris or UV damage)
- Increased property value
- Greater energy efficiency with enclosed climate control
- Year-round use regardless of weather
For year-round comfort, it’s important to choose the best pool heating system for indoors — gas heaters offer rapid heating, especially in colder climates.
Average Indoor Pool Installation Costs
Pool Size | Estimated Total Cost |
Small (10×20 ft) | $60,000 – $90,000 |
Medium (15×30 ft) | $90,000 – $150,000 |
Large (20×40 ft) | $150,000 – $300,000+ |
National Average: $120,000 – $180,000
Per Square Foot: $300 – $500 (including structure)
Cost Breakdown by Category
Component | Average Cost Range |
Pool shell (concrete, fiberglass, or vinyl) | $35,000 – $80,000 |
Enclosure or building structure | $40,000 – $120,000 |
HVAC and dehumidifier systems | $15,000 – $30,000 |
Plumbing, pumps, and filters | $5,000 – $12,000 |
Lighting and electrical | $3,000 – $8,000 |
Permits and inspections | $1,000 – $3,000 |
Cost Factors to Consider
- Pool size and material — Concrete and custom pools are most expensive.
- Building type — Attached vs. detached structures impact HVAC and permits.
- Moisture control system — Dehumidifiers and vapor barriers are essential.
- Heating method — Gas, electric, or solar systems affect operational costs.
- Finishes and extras — Tile, lighting, spas, or waterfalls can increase total cost by 20–40%.
What the Calculator Needs
To generate an accurate estimate, provide:
- Pool dimensions (length × width × depth)
- Material type (concrete, fiberglass, vinyl)
- Building type (attached, detached, basement)
- HVAC and dehumidifier preference
- Add-ons (heater, lights, spa, cover)
- Location/ZIP code for regional pricing
Sample Estimate: 15x30 ft Concrete Indoor Pool
Specs:
- 15×30 ft pool with 6-ft average depth
- Attached pool enclosure with HVAC system
- LED lighting and electric heat pump
Estimate:
- Pool shell & install: $60,000
- HVAC & dehumidification: $25,000
- Plumbing & filtration: $8,000
- Electrical & lighting: $4,000
- Enclosure structure: $50,000
- Permits & inspections: $2,000
Total Estimated Cost: ~$149,000
Operating and Maintenance Costs
- Monthly heating and electricity: $300 – $600
- Water chemistry & cleaning: $50 – $100/month
- Annual HVAC maintenance: $500 – $1,000
- Total annual cost: $4,000 – $8,000
Pros of Indoor Pools
Pros:
- Year-round swimming comfort
- Easier to clean and maintain
- Energy-efficient when insulated well
- Ideal for fitness, hydrotherapy, and family fun
Cons of Indoor Pools
Cons:
- High upfront installation cost
- Requires ongoing humidity and ventilation control
- Complex construction and permitting process
Building Permit and Code Requirements
- For indoor pools, you’ll typically need:
- Building and electrical permits ($1,000 – $3,000)
- HVAC and mechanical system compliance
- Moisture and vapor barrier inspection
- Safety fencing or alarms depending on local regulations
Energy Efficiency Tips
- Use high-efficiency pool heaters or heat pumps
- Add solar pool covers to retain heat
- Install LED lighting for lower energy use
- Use insulated walls and ceilings to reduce heat loss
Design and Material Options
Material | Lifespan | Description |
Concrete | 30+ years | Fully customizable, ideal for luxury builds |
Fiberglass | 25–30 years | Smooth finish, fast installation |
Vinyl Liner | 10–15 years | Budget-friendly, easy to replace |
Conclusion
Building an indoor pool is a luxury investment that combines wellness, comfort, and property value. With our Indoor Pool Cost Calculator, you can plan confidently, compare materials, and understand the long-term costs before diving in.
Swim year-round. Relax indoors. Invest in timeless comfort.
FAQs
Typically 3–6 months, depending on complexity and permits.
Yes, but moisture control upgrades are essential.
Electric heat pumps or solar-assisted systems are most efficient.
Yes—dehumidifiers and vapor barriers are critical to prevent damage.
For year-round use and luxury appeal, absolutely—it adds comfort and long-term value.
Our estimator uses:
- 2025 verified contractor pricing
- Regional labor cost multipliers (BLS data)
- HVAC and enclosure supplier averages
This tool provides an accurate planning range, not a formal construction quote.