Z Supply

A Company with

a PASSION for Quality

We make the best insulated PEX pipe in the Outdoor Wood Boiler Industry.


Through constant innovation and deep knowledge of the science and technology involved we have continued to develop our PerformaFlex line of insulated PEX into the best performing products in our industry.


PerformaFlex, in our 4" white outer casing meets the needs of most wood boiler users.


PerformaFlex Ultra, in our 5" outer casing is a good fit where the winters are colder.


PerformaFlex XT, with our proprietary dual wall outer casing, is designed to compete directly against urethane based pipes. XT excels where flexibility and durability in a premium product are desired. PerformaFlex XT is replacing urethane in many HVAC wholesale houses. It is backed by our industry best, "AMAZING REMEDIATION WARRANTY", that even pays for time and trouble due to manufacturers defect.

Ask About Our 5 x 5 x 5 Warranty

In addition to our lifetime foot for foot replacement warranty we will pay $5.00 per foot to a maximum of $500.00 for 5 years for failure due to manufacturers defect.



on all sales after 09/01/2017

This video has over 54 THOUSAND VIEWS!!


By the end you will know more than most dealers and even manufacturers.


Plus you will see why Z Supply is the leading manufacturer of insulated PEX.


Go to our VIDEOS page for more.


Quite simply, confidence. Confidence that you have purchased the best Insulated PEX in the business. Confidence that your have made the right choice for a trouble free install.

PerformaFlex 4" Casing

Our first product and still the most popular. PerformaFlex in a 4" casing, like the entire PerformaFlex line, features R-Foam our additive enhanced PE foam. R-Foam has a 140% thermal performance advantage over standard PE foam.  With a tested TEMP LOSS of just .87° per 100' this insulated underground PEX pipe will meets the needs of most customers.


PerformaFlex XT

XT is the urethane beater.  We like to say it leaves the urethane purveyors singing the blues. Our blue, dual wall, outer casing is the key.


With superior PERFORMANCE, great DURABILITY, and FLEXIBILITY PerformaFlex XT is the premium insulated PEX for those who want the best.   CLICK FOR DETAILS

PerformaFlex Ultra

PerformaFlex Ultra is our best performing insulated underground PEX pipe. With a tested temp loss at .47° this pipe is for anyone who lives in a colder area, has a higher BTU use, or just wants the added performance.


As with all of our insulated pex products we use WATTS brand MADE IN THE USA PEX


Outdoor Boiler Parts

Heat Exchangers, Pumps, and Parts...Oh MY!


We have the parts you need for a typical OWB installation. That includes our Competitor Series Quiet Fan Unit Heaters, Grundfos Pumps, and all the fitting you need. And of coarse, our parts come at the best prices in the business. CLICK FOR DETAILS


  • We Use R-Foam
  • R-Foam™ is our proprietary additive enhanced,  closed cell polyethylene foam. R-Foam has about 140% better thermal performance than standard PE foam. (Which the competition uses.) Once again, it is all about innovation and finding the best materials available,
  • The Blue XT Casing
  • Our DUAL WALL XT casing is truly unique in our industry. We are so confidant in this product that we offer our AMAZING REMEDIATION WARRANTY that even covers time and trouble for manufacturers defect.
  • XT  is designed to not just compete with urethane pipes like Dual Pex Flex but to surpass them. With superior PERFORMANCE plus FLEXIBILITY it does preciesly that!
  • This is IMPORTANT! Please do not buy an insulated PEX with Chinese PEX. We have seen real problems with quality in Chinese PEX including failure to properly cross-link pipe.
  • PEX for hydronic use does not require NSF certification That means that often there is no inspection at the Chinese factory or of the raw materials .

Grundfos Pumps

Two Sizes

Brazed Plate HX

Seven Sizes USA MADE

Water to Air HX

12 Sizes

  • Why White For The Outer Casing?
  • The white outer casing is all about Quality Control. It is hard to see a little black hole in a black pipe. But with our outer casing it stands out like a sore thumb. The result is better QC here and confidence in a  trouble free install on site.
  • It meets ASTM F405 and we have it manufactured specifically for our use.


These are the parts most commonly used in a typical outdoor wood boiler install..

Unit Heaters

QUIET 12 - 24 Inch

Mix Valves



Ultimate OWB Filter

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