Hot tub equipment

The cover is the most important accessory you will buy. It is the only thing between hot water and the outside air, all day, every day. A cover that has absorbed water gets heavy, seals badly, and quietly increases your heating cost from the day it starts failing. Replace it when it sags or gets hard to lift, not when it falls apart.

Insulation quality is the spec dealers gloss over. Ask specifically how the cabinet and shell are insulated and whether the equipment bay is insulated too. This is difficult to verify from a showroom floor, which is exactly why it is worth asking about directly and getting the answer in writing.

Pumps and jets. More jets is a sales number, not a quality number — jets are fed by pumps, and a lot of jets on an undersized pump feel weaker than fewer jets on an adequate one. Ask how many pumps there are, their horsepower, and which jets each one drives. Then get in the tub at the dealer, wet, with the pumps running.

Filters and plumbing access. Find out how many filters the tub takes, what a replacement set costs, and how easily you can get at them. Also ask how the equipment bay is accessed — a tub that has to be partially disassembled for routine service is a tub whose service calls cost more.

How to choose

Budget for cover replacement from day one

Covers are consumable. A waterlogged one raises your power bill continuously, so replacing it promptly usually pays for itself.

Ask about insulation in writing

Full-foam, partial-foam, and reflective liner constructions perform differently. Get the specific answer for the specific model on your quote.

Wet-test before you buy

Jet pressure, seat comfort, and depth cannot be judged dry. Any serious dealer will let you test the model you are considering.

Count pumps, not jets

Jet count is a marketing figure. Ask how many pumps, at what horsepower, and which jets each one serves.

Check filter cost and access before buying

Ask the price of a full replacement filter set and how often the manufacturer recommends replacement. That is a real recurring cost.