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Source for PEX

bloomingtonmike

Well-known member
Joined
Dec 1, 2011
Messages
314
Location
Bloomington, IL
Need to order pex to install in a concrete floor soon. Is there a good source for PEX that members recommend? 1/2" and the building is 40X64. What vendors do you recommend?
 
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bloomingtonmike

Well-known member
Joined
Dec 1, 2011
Messages
314
Location
Bloomington, IL
Re: Sourced PEX - Now need the rest

OK I ordered the 2700 Pole Barn kit tonight.

Also found the rest of the XPS foam I need for under slab - used once foam.

Any good links to get started learning about the rest of the radiant setup I will need.

Does anyone order the preassembled panels or do most source parts themselves?

Is Electric Boiler the way to go?

Is it worth the hassle to run gas pipe to the shop if I can vs running electric boiler?
 

DEnd

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Joined
Oct 25, 2008
Messages
218
Re: Sourced PEX - Now need the rest

I get mine from my local plumbing supply house. Their price is as good as I've found anywhere else.

As for Gas are you Propane or Natural Gas? If you are Natural Gas, that is likely your cheapest option in operation, the install may be slightly higher than electric. Since you are putting in radiant I assume you are planning on heating the space 24/7, and if you must have radiant NG is probably the cheapest easiest option if it is available.

Propane is kind of mixed, if you have enough storage and can get it when it's cheap and you have high electric prices you can come out ahead. If you have lowish electric prices and not enough storage and are in a high use area, then electric may be a better option especially if the US does not create a strategic propane reserve.

All that said if you aren't wanting/needing to heat the space 24/7 or don't want/need radiant you may be better off considering a "Mini-Split" (really any variable refrigerant flow heat pump). These heat pumps are now viable for the vast majority of the US, in some cases are able to extract useable heat in below zero temperatures.
 
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bloomingtonmike

Well-known member
Joined
Dec 1, 2011
Messages
314
Location
Bloomington, IL
I have Natural Gas on the property. Its in the house and my existing 2 car detached.

I plan to heat 24X7 with radiant heat.

I checked specs on a similar boiler and it was calling for 120 amp breaker. How many BTUs do you really need in a 40X64 setup in IL and with 5" concrete and R7.5 under slab?? I need to find that calculator?

I found the Radiantec site so that may help me understand all of this too.
 

DEnd

Well-known member
Joined
Oct 25, 2008
Messages
218
I have Natural Gas on the property. Its in the house and my existing 2 car detached.

I plan to heat 24X7 with radiant heat.

I checked specs on a similar boiler and it was calling for 120 amp breaker. How many BTUs do you really need in a 40X64 setup in IL and with 5" concrete and R7.5 under slab?? I need to find that calculator?

I found the Radiantec site so that may help me understand all of this too.

Go with NG. BTUs depends on building design, orientation, air sealing, insulation levels, temperature set point, etc... you may be able to go by a rule of thumb for your area, and get acceptable performance, but to right size the equipment and tubing placement you'll need to find someone to run the load calculations for you. Those calcs are amazingly easy to screw up, so it's best to leave them to qualified professionals.
 

Backlight

Well-known member
Joined
Dec 31, 2012
Messages
158
Location
Ontario Canada
I also got my PEX from www.pexuniverse.com.. Everything came on time but they delivered 1/2" manifold connectors instead of the 5/8" that I ordered.

Their after sales service really sucked. Phone calls were often diverted to a mailbox that stated they were to busy to take my call and try again later. When I finally got ahold of someone they informed me that because my order was over 30 days old the part could not be exchanged. I informed them I was just staring my project and had not inspected every part in minute detail to ensure correctness when it arrived. In the end they said they would send me new parts after I shipped back the incorrect parts. That was not an option for me as I was having my floor poured and needed to pressure test beforehand.

In the end it was such an annoying experience I ended up ordering replacement parts from http://www.pexsuperstore.com/.. They were extremely responsive on the phone and quite helpful. My next order will be from them...
 
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