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Todd H.

Al Moran writes:
On 26 Sep 2006 00:01:49 -0500, (Todd H.) wrote:

What are the top 10 things that folks have actually seen (or heard
directly from someone who saw, no hypotheticals please) screwed up by
prior installers, and the potential consequences of those screwups?

For the purpose of limiting the discussion, let's leave system sizing
out of the equation because a) assume we're replacing an existing
system that the owner would notice is either evenly/adequately heating
or cooling the house or not, backed up by b) assume the homeowner has
gotten several quotes and has reviewed them to see whether all bidders
have quoted consistent sizes c) the folks doing the estimates are
doing the sizing, and the actual installer is showing up with a given
size unit already in the truck.

Best Regards,

On the AC side, in no particular order,

Leaving the orifice out of a flowrater, improperly charging the
system, setting the blower speed wrong, wiring the system wrong, using
the wrong amperage fuses, not installing a filter, leaving large ass
gaps in sheet metal transitions, leaving ducts completely
loose/unconnected, improperly adjusting a txv valve, no trap in
condensate lines,installing new system and not clearing old condensate
lines, tech specing correct tonnage and office gets wrong tonnage and
installer puts it in anyways ie, need four tons, office gets 2 1/2 ton
condenser 3 1/2 ton coil and 4 ton air handler...

On the heat side, in no particular order,

No "T" in gas line. no gasflex on gas line, manifold pressure
improperly set, not converting natural gas valve to propane when
required, too many elbows in flue pipe, flue pipe not installed
correctly, hooking VPS hoses up in wrong place on 90% furnaces, blower
motors not orientated correctly causing the supply to be the return
and the return to be the supply...

These are all things I have seen.

Those are helpful examples-Thanks Al.

Damn, some bone headed stuff in there for sure! I mean, how the hell
someone gets the motor in backwards and not notice the vents sucking
instead of blowing... woof. And not changing the the valving to the
gas in use... **** fire that would be bad news.

--
Todd H.
http://www.toddh.net/