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[mlappin]

Brave, Thermopex is not cheap. I bought  100 feet at $12.00  a foot. For me it is worth it, this stuff is really tough.

Yikes, I see but will see the savings on better heat and less wood consumption. Any price/quality differences between the logstor and themoplex?

Logstor is true one inch ID so you will see better flow without needing a larger pump so you’ve already saved on the cost of the pump and the electricity used.

I can let Logstor go for $13.25 a foot for now, unless you have excessively long runs the buck and a quarter difference in price isn’t worth haggling over.

I bought a full 250’ roll of it when I replaced my underground pipe, if the $312.50 difference in price was going to break me I’d be calling DirectTV and downgrading packages to come up with the difference.

[mlappin]

I also learned the hard way. I put in 3 wrap and ended up having groundwater getting to my pex, went through a ton  of wood. Dug it up and put in Thermopex from Central Boiler, what a difference!

I have about 200 feet to run, how much did you spend?

With my previous setup I was seeing a temperature drop of 35-40 degrees with the house calling for heat, the domestic hot water calling for heat and the snow melt on.

Same dilemma I have

Always better if possible to pull a little heat from a lot of water than the inverse. When I plumbed my shop I bought a wrapped product sans outer cover, ran the numbers several times, was cheaper to buy 1.25” pex and smaller pumps than 1” pex and larger pumps. Also see energy savings on running smaller pumps compared to larger.

[braveblaster]

Brave, Thermopex is not cheap. I bought  100 feet at $12.00  a foot. For me it is worth it, this stuff is really tough.

Yikes, I see but will see the savings on better heat and less wood consumption. Any price/quality differences between the logstor and themoplex?

Logstor is true one inch ID so you will see better flow without needing a larger pump so you’ve already saved on the cost of the pump and the electricity used.

I can let Logstor go for $13.25 a foot for now, unless you have excessively long runs the buck and a quarter difference in price isn’t worth haggling over.

I bought a full 250’ roll of it when I replaced my underground pipe, if the $312.50 difference in price was going to break me I’d be calling DirectTV and downgrading packages to come up with the difference.

Thanks much, this and the splitter are the two next projects. Married to the OWB as my wife put it....lol

[RSI]

I also learned the hard way. I put in 3 wrap and ended up having groundwater getting to my pex, went through a ton  of wood. Dug it up and put in Thermopex from Central Boiler, what a difference!

I have about 200 feet to run, how much did you spend?

Thermopex is good pipe from what I’ve heard, however it’s not true 1” pipe and is nominally specced at 7/8” ID, and is the same OD  as the OD of 1” copper. Thats how they get away with calling it 1”.

Logstor is actually 32mm ID which is close enough to call 1” ID.

Depending on your load, with the smaller pipe you may not be able to force enough water thru it to avoid having a rather large delta T.

With my previous setup I was seeing a temperature drop of 35-40 degrees with the house calling for heat, the domestic hot water calling for heat and the snow melt on.

Installing Logstor helped some, replacing all the PEX in the basement with copper 1” pipe solved the rest.

Can have everything calling for heat now and have a Delta T of 20 now running the same pump on the OWB.

It is 32mm OD. The ID is 26mm. (1" = 25.4 mm)

[Rockarosa]

Brave, I am burning less wood, getting longer burn times. It was definitely worth the expense and labor.

[yotehunter66]

the lessons we learn the hard way are the ones we remember the best (and there are lots of us here that know this one)

Yep…

Never go commando and get in a hurry to zip

Ow!

[patvetzal]

Six years ago a buddy installed a Central Boiler and had 20' of Thermopex left over. Being the thrifty type I saved it and sure enough, last fall I did a temperary install on a used P&M, just to try it.....
Left the Thermopex sitting on the grass as the boiler will be relocated next spring. In the meantime the Thermopex is lost somewhere beneath 24" of snow.....