A hot tub can be one of the best upgrades for your home, but the sticker price is only the beginning. Many first-time buyers focus on the upfront cost and forget about the ongoing expenses that come with owning and maintaining a spa. If you want to budget realistically, here are the hidden costs of owning a hot tub that most people overlook.
1. Electricity Bills
Heating hundreds of gallons of water is not cheap. The cost depends on your model, insulation, and local utility rates.
- Inflatable tubs: $50–$100 per month
- Hard-shell tubs: $30–$60 per month
If you buy a poorly insulated model, expect your energy bills to climb quickly.
2. Chemicals and Test Kits
You cannot just fill a tub with water and call it good. Hot tubs need proper chemical balancing to stay safe and clean.
- Sanitizers (chlorine or bromine)
- Shock treatments
- pH and alkalinity adjusters
- Test strips or digital testers
Plan on $15–$30 per month for chemicals.
3. Filters and Cartridges
Filters trap debris and keep the water clear, but they wear out over time.
- Replacement cost: $20–$50 each
- Replacement frequency: Every 12–18 months
Neglecting your filters can shorten the life of your pump and heater, which leads to bigger repair bills.
4. Covers and Accessories
A proper insulated cover is essential to keeping heat in and dirt out.
- Covers: $200–$400 every 3–5 years
- Cover lifters, steps, and other accessories can add another $100–$300 upfront
These items often are not included in the base price.
5. Repairs and Service Calls
Even high-quality tubs will eventually need parts replaced.
- Small fixes (jets, sensors, pumps): $100–$300
- Major repairs (heaters, control boards): $500–$1,000+
- Service call fees can range from $75–$150 per visit
Warranties help, but only if you buy from a reputable brand.
6. Water Costs and Draining
Hot tubs need to be drained and refilled every 3–4 months. For a 400-gallon tub, that is a few extra dollars on your water bill each time. The bigger issue is where the drained water goes. Make sure you have proper drainage planned.
7. Landscaping and Setup
If your yard is not ready for a hot tub, you may need:
- A reinforced deck or concrete pad ($500–$2,000)
- Electrical work for 220v tubs ($500–$1,500)
- Privacy fencing or landscaping
These costs are often overlooked but can be just as important as the tub itself.
Final Thoughts
Owning a hot tub is not outrageously expensive, but the hidden costs add up if you are not prepared. Expect to spend an extra $500–$1,200 per year in ongoing expenses, plus occasional repairs and replacements.
The key is buying an energy-efficient, well-built model from a reputable brand. That way, you can enjoy the relaxation without constantly worrying about surprise costs.
For recommendations on tubs that balance performance with affordability, check out our Hot Tub Buyer’s Guide and our latest TubWars Reviews.