Planning a swim spa installation? Here is the short version: you need a flat, level base that can carry the full filled weight (often 14,000 to 23,000 pounds for the models we sell), a dedicated 240V circuit installed by a licensed electrician, a clear delivery path at least as wide as the spa, and room around it for service. Once the site is ready, Master Spas says one of its swim spas can be installed in less than a day. The real work is the preparation, and this guide walks through it step by step.
How to install a swim spa: the order of work
- Check rules first. Ask your city or county whether you need a building or electrical permit, and check HOA rules on setbacks, fencing and screening. Some areas treat a swim spa like a pool for barrier rules.
- Pick the spot. Consider the delivery route, the view from the house, sun and wind, and how far the electrician has to run wire.
- Prepare the foundation. Pour or build a base rated for the filled weight and let concrete cure fully before delivery.
- Rough in power. Have the electrician install the disconnect and run the circuit to the spa location.
- Delivery and placement. The spa is set by forklift, trailer, dolly or crane depending on access.
- Final hookup. Master Spas recommends the electrician complete the connection after the spa is delivered, and warns not to fill the spa before it is wired.
- Fill, balance and heat. Fill with a garden hose, start up per the manual, balance the water and let it heat.
Swim spa foundation: what the base must handle
A swim spa is far heavier than a hot tub. Here are the weights and sizes listed on the swim spas we carry:
| Model (our listing) | Outer dimensions | Dry weight | Filled weight | Electrical listed |
|---|---|---|---|---|
| Canadian Spa St. Lawrence 13 ft | 154 x 90 x 54 in | 2,400 lb | 14,000 lb | 240V, 60A |
| Canadian Spa St. Lawrence 16 ft | 197 x 90 x 54 in | 2,900 lb | 17,000 lb | 240V, 60A |
| Canadian Spa St. Lawrence 20 ft | 234 x 90 x 54 in | 3,800 lb | 22,000 lb | 240V, 60A + 50A |
| Cal Spas Commander F-1655 | 93 x 200 x 51 in | 2,000 lb | 22,825 lb | 240V |
Those filled weights are spread over a large footprint, but the base still has to be flat, level and in full contact with the bottom of the spa. Canadian Spa Company says the entire base must be a flat, level surface that contacts every part of the spa. Master Spas recommends a reinforced concrete pad at least 4 inches thick and warns against installing on grass or an uneven surface, or shimming the spa level with objects underneath.
Swim spa foundation options
- Reinforced concrete pad. The most common choice and the one both manufacturers above favor. Have a contractor size the thickness, reinforcement and compaction for your soil and the filled weight of your model.
- Engineered deck. Possible, but a deck must be designed for the filled weight plus bathers. Have a structural engineer sign off; this is not a DIY calculation.
- Recessed or in ground. Looks great, but you must keep access to every service panel. Canadian Spa Company recommends a removable hatch and about 75 cm (roughly 30 inches) of access around a sunken spa.
- Pavers or gravel. Master Spas notes the ground can move and shift with pavers or gravel. Use them only if your manufacturer and contractor approve the specific build.
Our hot tub foundation guide covers pads, pavers and decks in more detail; the same principles apply at a larger scale.
Electrical requirements
Swim spas are hardwired. The St. Lawrence listings call for 240V service at 60 amps, and the 20 ft dual zone model lists a second 50 amp feed because each zone has its own control pack, heater and pumps. Master Spas says most of its swim spas need a 240V, 50 amp hookup and recommends placing the GFCI breaker box near the spa, in line of sight. Canadian Spa Company adds that improper power installation will void its warranty and asks for a qualified electrician who follows local codes. A licensed electrician and your local electrical code have the final word on wire size, disconnect location and bonding.
Clearance and service access
Master Spas recommends about three feet of clearance on each side, with the most important space on the side where the equipment sits. Plan for the cover too: a hardtop cover and lifter add to the footprint. The St. Lawrence models include a 5 inch to 3 inch tapered hardtop cover, per our listings. Keep the equipment side reachable even if you build a deck surround; removable panels are the usual solution.
Delivery: forklift, trailer or crane
Most swim spas are about 8 feet wide, according to Master Spas, so the delivery route needs at least that much clear width, plus room to turn. The St. Lawrence listings state flatbed curbside delivery, with the customer responsible for offloading, and say a crane is required for final installation. Canadian Spa Company notes that the customer or their crane company must assess and control the lift. Measure gates, side yards, overhead wires and slopes, and send photos to the crane company before booking.
Swim spa installation cost: what drives it
We do not publish a single installation price because it varies widely by site. Get separate quotes for each line item:
- Permits and any required inspections.
- Foundation: excavation, gravel base, forms, rebar and concrete, or an engineered deck.
- Electrical: wire run length, panel capacity (a 60 amp feed can require a service upgrade in some homes) and the disconnect.
- Crane or rigging: often the biggest variable when there is no straight path to the yard.
- Finishing: steps, decking, fencing, privacy screens and landscaping.
- Accessories: a set of 3 tier swim spa steps ($930.60) and a swim spa exercise bundle ($500) with resistance cords, tethers and a swim harness.
For purchase price and monthly running cost, see swim spa vs hot tub. Once you are set up, our swim spa exercises guide has starter workouts. Exercise claims are general; check with your doctor before starting a new routine, especially in warm water.
First fill and start up
Follow the start up section of your owner’s manual. In general: confirm the power is off, fill through the filter compartment with a garden hose, bleed air from the pumps, power on, then test and balance the water before the first soak. The St. Lawrence models list ozone and Glacier antimicrobial filtration, which help, but you still need a sanitizer and regular testing. Browse every model on our Canadian Spa Company brand page, and see our hot tub buying guide for water care and cover basics.
Frequently asked questions
How thick should a swim spa concrete pad be?
Master Spas recommends a reinforced pad at least 4 inches thick. Follow your manufacturer’s pre delivery guide and have a contractor confirm thickness and reinforcement for your soil and the filled weight.
Can I install a swim spa myself?
You can handle planning, site prep coordination and the final fill. The pad, any deck structure, the crane lift and all electrical work should be done by licensed professionals.
Does a swim spa need a permit?
Often, at least for the electrical work, and sometimes for fencing or barriers. Rules vary by city and HOA, so check before you order.
Can a swim spa go on a deck?
Yes, if a structural engineer designs the deck for the full filled weight plus people. A typical patio deck is not built for that load.
Questions about swim spa sizes, electrical specs or delivery to your yard? Call The Everything Depot at 866-777-2590, Monday to Friday, 9AM to 6PM PST. Swim spas ship free by freight on orders of $999 or more. Returns follow our return and refund policy.
Sources: Master Spas, The Do’s and Don’ts of Swim Spa Installation; Master Spas, guide to delivery day; Master Spas, How to Install a Swim Spa; Canadian Spa Company, preparing your location for a swim spa delivery.
