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You need oxygen barrier pex no matter what pump you run. The oxygen barrier pex is the same as any other pex, except for the barrier. Regular pex will allow oxygen to pass thru it. You do not want oxygen to be in a hydronic/radiant system. Air vents air important. I agree with 72Tunaboat...

If you have a sludge problem, has the fuel screen in the pump been check/cleaned. I have seen burners that light fine, then after a few minutes the pump pressure either fluctuates or starts dropping off. Usually they have dirty pump screens. Another reason for fluctuating pump pressures is...

Sorry it has taken so long to get back on this, I don't visit here as often as I should. Hopefully you can still use the info. Here is a link to the product I have used before. I am sure there is similar products from other companies...

Once you go radiant, you will never go back to another heat source. That is if it was installed correctly. Nothing like laying on a warm floor while working on your car. If cost is an issue, by all means put in the tubes anyway. Then heat with something else for a while. You can then save...

JBAUTO, I know you said you have your plans, but here are a couple I did. Sorry the quality isn't better, they didn't scan very will. But you should be able to see how the tubes go. They are on 12 inch centers. You were asking about loop length. The loops should be as close to the same...

After reading most of this thread I am adding my thoughts. With any heating system, for it to work properly, the heat source has to be sized for the heat loss of the area to be heated. If the loss is less than the BTU capacity of and electric water heater, it should work just fine. If the...

Radiant over existing slabs is no problem. We use a product that attaches to the slab, then the tubing 3/8 or 1/2 pex snaps into it on 12" centers. I would go at least 9" in your case. Then use a concrete with reinforcing fibers added. My concern would be that there is no insulation under...

Nice job on the remodel. Love the shop. Boy if only the guys in parts houses new how to use the old books instead of a computer you could actually get the part you were looking for.:D

It may or may not be the thermostat. Most electronic stats will display the set point temp if the actual room temp is within one degree off it. So if set point is 70 degrees and actual room is 69, the stat will say 70. But the heat will continue to run until the room reaches 70 degrees. The...

Not seen much of this site, but after browsing thru some of the forums I thought some of my experience in the HVAC industry might be useful here. I am a active member on the HAMB, which many of you probably now of. I live Grants Pass Oregon, which is in the SW part of the state.