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Pony: I agree good communication isn't the same as being a good tech. Though it's ALWAYS part of being a good businessman, in case you want to go into business yourself. Even when you work with...

Hey Pony: I think people want to make sure they're encouraging good tradesmanship. It helps hold high standards and customer respect.

But as for your question of what the site is good for, you DID...

Also: most contractors don't use polyiso under slabs. Extruded polystyrene is the more accepted practice, IMO. Polyiso, while having nice high r-values (though changeable with time) absorbs lots of...

I'm looking a little closer at the nomograph now. First, it's mostly linear (I'd forgotten). That makes things pretty easy. The first thing you need to know is your heat flux, hopefully you already...

No I've never seen the formula. It should only take a few steps to derive it from the graph, you just have to determine formulas for the various curves. How's your diff. eq's?

Interesting point. But I believe the communication line still functions at or less than 60hz, and the skin effect is a feature of AC and a function of frequency. In which case the skin depth is over...

I'm mostly familiar with the Fujitsus, but you'd just get an error code telling you as much and it wouldn't run, I believe. I could look up the error code. Same thing happens if you miswire the...

Haha, I had a picture in my head and I didn't let go. It just sounded so ridiculous. Right, it was frost falling off the coil. That's funny.

Never mind....

Nude sunbathing then.

Pony: if you've got your Universal certification, that indicates that you've demonstrated knowledge of basic refrigerant handling and environmental implications. Due to regulations that limit...

I sent you the nomograph. Yes, I often double-up radiant tubing density near walls, especially with windows and doors. But much more important are slab edge and under insulation details: I put at...

Had it right the first time. I wouldn't include an outdoor-reset mixer on the radiant loop unless (maybe) you're in a really extreme climate. Unnecessary complexity. The biggest value of the outdoor...

Pmeunier has it right. Humidity can be evaluated as either absolute or relative, most of the time when we measure it we're measuring it as relative. Since warm air can carry more moisture than cold...

You didn't mention how old/long ago the insulation was installed? The VOC's associated with polyurethane foam drop sharply with time, as I understand the current science to indicate. Consider adding...

Plastic on the ground makes sense. Control exterior water: make sure drainage is all set to get water away from the house. Put dehumidifiers in the space, close the vents, insulate the side walls......

Perception might go both ways. That is, if you get to sort of know your neighbors, or otherwise are aware that there might be one that is potentially bothered by the smoke, then their understanding...

If I understand, you are throttling your geo exchange loop down for your multiple geo units. Seems like you're overpumping your geo loop: if you have multi-speed pumps you could back them down,...

As per the AOP Rules only Professional Members * can reply with
advice to the OP. Anyone may post and ask questions. They may even
question the * member answer but not give advice or expand on the...

oops, sorry I didn't see you'd already posted the solution.

Okay, okay, it's been said but: read the manual. On many units there's a separate venting manual. There are LOTS of considerations, besides just length and number of elbows, height off ground,...

As per the AOP Rules only Professional Members * can reply with
advice to the OP. Anyone may post and ask questions. They may even
question the * member answer but not give advice or expand on the...

The change from 12 to 14g wire was unnecessary. Sorry to say, but you should have known that. Larger wire merely entails less resistance, which can almost never cause a problem...

I wonder about...

I have a Sprinter van, which is a completely different beast than a standard American van (I had a Chevy before, for example): MUCH more standing room, easier to get around in. That said, it's crazy...

I'd probably just mix down the radiant with a thermostatic mixing valve. The zone thermostat will limit overheat. The Taco RMB looks interesting, I used something similar (an Automix) in a wood...

There's a somewhat complicated graph called a nomograph that relates the intended room temperature (which relates to the floor temp and the insulation/tightness of the building, the provided water...