I figure the HO install procedure goes like this:
1. Purchase A/A at Home Depot.
2. Get home, and open box. Read parts list.
3. Another Trip to HD to buy an elbow and one length of 6 inch round.
4. Home to take old humidifier off furnace.
5. Can't find mounting screws on old hum.
6. Find mounting screws. Don't have a 1/4 nut driver. Back to HD to buy one.
Can't just buy one. But the set of five.
7. Back home to pull the cap head screws out.
8. Go to pull wires off old hum. Can't get them off, snip with toenail
shears from wife's medicine chest.
9. Can't find out how to get water line disconnected. Leave old unit
hanging by water line. Kinks line over top of beam.
10. New unit has a different size hole than old unit.
11. Slice finger while trying to bend sheet metal back to make hole bigger.
12. Trip to hospital.
13. Tetanus shot. Bandages. Blue Cross deductible $200 for hospital visits.
14. Back to try to mount new A/A. Find that hole still not big enough.
15. Back to HD to ask how to resize hole. Buy red, green, yellow, and
16. Cut hole larger. Use wrong template, and make hole too large.
17. Back to HD to ask what to do. Purchase two sheets of single wide
18. Home. Try to attach panning to side of furnace. Not magnetic. Get big
roll of duct tape out. Tape single wide panning to side of return duct.
19. Get template out again.
20. Magic marker location of A/A on new singlewide panning.
21. Cut duct tape to get panning off
22. Using red, green, and yellow shears, cut hole in singlewide panning.
23. Cut fingers on other hand on sharp panning edges.
24. Use new first aid kit from safety aisle at HD.
25. Get A/A cut into single wide panning, and tape panning to side of
furnace. Duct tape A/A to panning, too.
.<snip for brevity>
41. Duct tape works loose and A/A falls on cellar floor at 3 AM, causing
wife to call 911. Police with flashlights and guns drawn look in cellar, and
emerge wet up to their knees. No suspect found. But water line sheared and
cellar is flooded.
52. Wife leaves with installer she called the next morning, and is in
Did I leave anything out?
The larger heating fuel bill. Caulk the house instead.
Andersen says an average family of 4 adds 2 gallons per day (0.69 lb/h)
of water vapor to house air by breathing, showering, cooking, cleaning,
and so on.
With C cfm of cold fresh air leakage, maintaining 40% RH at 65 F requires
adding 60Cx0.075(0.00531-0.0025) = 0.69 pounds of water vapor per hour to
house air where I live in January (with w = 0.0025 pounds of water vapor
per pound of 30 F outdoor air), which makes C = 55 cfm, close to ASHRAE's
15 cfm per occupant, and much less than a typical 2400 ft^2 1-story 1 ACH
1x2400x8/60 = 320 cfm natural house air leakage.
If the house has a 530 Btu/h-F conductance, including air leaks, reducing
the air leaks to 55 cfm could halve the fuel bill, saving 24h(65-30)530/2
= 223K Btu on a 30 F day. It would also save the energy needed to evaporate
60(320-55)0.075(0.00531-0.0025) = 3.35 pounds of water per hour, ie 3350
Btu/h or 80.4K Btu/day, ie another $1/day of oil.
A tight house needs DEhumidification in wintertime, eg a small exhaust fan
in series with a humidistat.
Stormy has issues as we all know, so I can see him being slightly confused
since it was always "his boss"that did the actual installation of the units.
The first one, no matter what brand, is always the bitch...get a few
installed and it becomes second nature...if you are installing them on most
of the new installations, its part of the job just like pulling a lineset,
or wiring it up...you know what order to go in that works for you and you
dont spend alot of time with judging where to put it, as you already know.
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