Hot tub operating cost and insulation

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.
Status
Not open for further replies.

4acrefarm

Member
Jan 11, 2009
159
western ma
I will soon be getting a free hot tub, My friend says it should work but the frame needs work. I have two questions
1 What are the average electricity costs to run one?

2 If i super insulate with reflective foil and Styrofoam what can I save?
I was thinking of using around 10 inches of foam and 2 layers of foil. I already own the Styrofoam.
Thank for any help>
 
My standard 8' (big) hot tub from Phoenix spas setting on a slab of concrete in the open only added about 20 bucks a month to by power bill. We pay 10 cents a kWH. We run the tub at 102 and use it about every other day year round. Been doing it for three years like this at this house. The last house had a smaller tube but was also about 20 bucks a month increase.

I doubt insulation will help much. Doing much work on a wrecked hot tub takes it from "free" to very expensive really fast. You might want to consider just buying a better tub that works.

We are hot tub people. Some homebrew in a glass on the edge and a nearly full moon last night. Slight wiff of red alder burning in the stove inside the house.
 
Around here the monthly (winter) cost is between $75-100 for the average size tub. When it's 20 below and windy they really make the meter spin. You are in a warmer climate so it won't be quite so bad.

Most of the heat is lost through the lid. You can buy super insulated lids but they are expensive. You could lay Dow blue board on top, but it will eventually absorb water.
 
I plan to install it right next to the house on the south side, under a deck. I was planning to build or modify a cover that would be super insulated. I was thinking weight would not be an issue I could hinge it and have a rope and puly system to open it. I know it seems like a lot of work for a free tub, but I have more time than money. I always build things out of other peoples thrash.
 
When I used to use elect to heat mine I figured it cost $30 month average. Now I heat it with my boiler and it costs me a few sticks of wood. It helps if you take a solar cover and cut it and put it on the water. Helps keep the heat in and less evaporation. I also bought a 4in foam cover last time mine went bad and that helps. the 4in foam wasn't much more than the reg but it made a big difference. It also seems to hold up better as it isn't so apt to get broken. It's not heavy to open either as I had heard it might be.
leaddog
 
we have a soft tub and cost is about 10-15 bucks a month tops. I do know tha anything free always costs money some way some how. I bought a softtub for 400 bucks brand new and it work well.
 
KC, all of your links have blonds in bikinis. Keep it up!
 
Highbeam said:
KC, all of your links have blonds in bikinis. Keep it up!





I should stop because in the GEAR section they start posting stuff about oiling their tools and maintaining their wood handles.
Weird stuff man.
 
Highbeam said:
We are hot tub people. Some homebrew in a glass on the edge and a nearly full moon last night. Slight wiff of red alder burning in the stove inside the house.

Damn Highbeam, that sounds real good! I've never wanted a hot tub until just now.
 
The trick is putting the tub where the sky is big so you can watch the stars.

Tub is immediately to the left in this picture, I could have had my elbow on it.

We were out again last night for an hour with no homebrew but I had my whole family out there with no TV and no distractions other than each other. Captive audience.
 

Attachments

  • snowsmall1.jpg
    snowsmall1.jpg
    60.8 KB · Views: 334
Hi -

I'm on my 2nd tub.

I get plenty of Winter and here's my take.

The current tub has 2" styrofoam cut to fit between all the wooden support 'frame' pieces except a few vent areas, and the power cable entrance.

There's a healthy quuantity of sprayed in foam most everywhere else, except on the motors, control box, control panel, and several gate valves.

It's on a 4" foam pad and I keep 2 covers on it during the coldest weather. The old one helps a bit with sun damage and provides some additional insulation.

It's used regularly, especially after over-enthusiastic wood gathering!!

ATB,
Mike
 
Highbeam said:
The trick is putting the tub where the sky is big so you can watch the stars.

Tub is immediately to the left in this picture, I could have had my elbow on it.

We were out again last night for an hour with no homebrew but I had my whole family out there with no TV and no distractions other than each other. Captive audience.

I have no idea how much money you make, what your wife looks like, or whether your kids are in trouble wit the law but you are a lucky man!
 
Status
Not open for further replies.