PEX 101: The Best Underground Insulated PEX

Choosing the best Underground Insulated PEX is as important as choosing the best Outdoor Wood Boiler. No matter how efficient your outdoor wood boiler if the Underground Insulated PEX you install is not the BEST in the market, then you are just wasting your money.

Introducing the World's Best Insulated PEX: Insulated PEX Heat Mizer Brand. Our Insulated PEX Heat Mizer Brand is no doubt the best there is in the market.

  • Forever Waterproof design!

  • Lowest Heat Loss Ever - Less than one degree of heat loss over 200 feet!

  • Industry Leading Warranty - Full Replacement Coverage, including LABOR!

  • Perfect Performance Record - Over 1 Million Sold and ZERO Failures

  • Experts Agree - Our proprietary design has been PERFECTED for over 30 years!


If you are planning on buying an underground insulated PEX pipe, remember these two things: to not buy a BLACK underground PEX pipe and to also never buy a foam-filled insulation PEX pipe.

BLACK PIPE (it's a trap)

If you see a BLACK underground pipe with a good price – STAY AWAY!  Black drain tile is not manufactured to be waterproof. It will leak, be filled with water, and suck the heat from your pipe to the ground.

We in the industry have a name for these low-grade pipes: Do-Over Pipe. It is because you will end up having to do it over in a few years. When that happens, customers deeply regret "going cheap" on their pipe investment. Don't make this mistake. Never!

Also, don't make the mistake of thinking that spending 2 times or 3 times the price gets you a better product. You can pay $18 per foot for pipes imported from Sweden. It is a LOWER grade product that costs a lot because of overseas European shipping costs. Don't make this mistake either.


We can talk whole day why should never buy a PEX with foam-filled insulation but here's some of the most important points:

  • Foam-filled PEX pipe’s cost is doubled what you should spend (it is shipped from Europe)

  • The foamy-filled stuff suffers 25% more heat loss into the ground

  • The inflexibility of the foamy-filled stuff makes it brutal to work with, which increases the time and cost of installation

  • The foamy-filled stuff may suffer a catastrophic loss because of its design.

Watch the video below to know more about this topic or simply reach out to us with any questions you may have! Just call our office, and we will take care of anything for you over the phone at (231) 861-8200, Monday-Friday, 9 AM - 8 PM ET.