Tips to keep your Hot Tub costs down
Top three things that effect your running cost.
The first is the type of insulation your hot tub has, if you bought a Costco or Home depot hot tub or any spa with a perimeter type insulation system then you need to insulate it the cheapest way is to put fiberglass pink into large garbage bags, tape the bags closed and put them around the spa between the shell and the skirt, remember to leave room around the motors so they don’t overheat.
The next this is your cover. You should have a good 4″-5″ cover with a center baffle if you don’t then get one. If your cover is getting heavy and waterlogged replace it, the r-Value is gone once it is full of water. Also make sure your cover is securely fastened! A cover that is flapping around with every gust of wind is loosing heat, clip is closed and have the clips at the right length so it holds the cover tightly onto the hot tub. A floating thermal blanket is great too, it protects the cover from the hot water, hold humidity in and insulates! But don’t buy the cheap bubble pack ones get a good polypropoline blanket
Shut your venturi air valves when not using the hot tub. These are the small dials or levers around the shell that inject air into the jets, if they are open they are injecting outside air into your hot tub!