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Son lives in Kent (East hill) so very easy for me to come get it if you are so inclined. Would even bring the truck, not even have to 'fit it in the front seat'. Would probably be a few months...

If ya dont want the old one and are in the South End (e..g near Renton) I'll come pick it up and haul it away.

Would drop a small scroll into it and a variable speed fan and would make a great...

Since this thread opened again, will add in: (dont think I put this in last year)

3 years ago, 'just for kicks' I built up an evaporator for a water source HP from used Cu pipe that had been open...

yep, refrigerant pumping capacity, NOT airflow

System airflow over condensor is 1480 CFM in existing ductwork system and will not change that, probably will put a variable speed drive on the evap...

Old Rheem 4T package unit with frozen scroll compressor, 13.5 m3/min rating.

Going to replace it with 7.7 m3/min scroll. Used mainly as HP. TXV in HP mode.

Going to leave the condensor fan...

What I'm asking is if anyone knows of an HVAC supplier of aerodynamic blades.
Could always buy something like the pic below (variable pitch, airfoil blades, etc) that costs more than most...

The newer mini splits have the aerodynamic and quiet outdoor unit fan blades, some are < 35dB noise levels. Older split systems have the typical 4 blade aluminum or steel fan blades which growl out...

1-1/2" in the middle is only 3/4" at the outside edges

Inset the unit 3/4" into the wall at the ends, palster, drywall, paneling? You could make that work with any of those.

Place an electric heater (edit: like an old dryer element or even a couple of hair dryers on high) in the duct and measure delta T, calc airflow based on volts, amps plus air properties at your...

What pacnw said.

HP function requires reversing valve (or setup to NOT have any AC capability), different controls, etc. Indoor coil for HP is typically 20% or more larger than AC only, unless...

The WA state energy code can be interpreted that R4 minimum is needed on anything with air moving in it.

IIRC, some state legislatures in the past actually tried to legislate the value of pi ?

Maybe needed to pour the heat for 3 minutes to one joint so that there would be plenty of copper oxide in the line for the filter to work on?? No use for a filter if there is nothing to filter?

someone getting 4 grand for an ar-15 type gun

That in the area of being able to buy a used CNC mill, then unlimited personal 'not for sale' firearms for the price of the metal?


reasons? ...

Merry Christmas all.

Anytime pulse modulation is discussed I think voltage regulators as that was a big part of my previous day job. I

In this case a TI UC1825 pulse width modulator chip, a...

approx 4 million btu per ton of tnt

approx 1000 btu per cu ft, so 4000 cu ft of NG per ton tnt

about 9-1/2 cu ft of air per cu ft NG, right?

so, 42,000 cu ft of house for a ton of TNT for NG...

What jd said.

Mine was frosting quickly this AM as was mid 30s F and 99% humidity (PNW) - them there BTUs gotta come from someplace, if you look at a psychrometric chart for humidity and temp...

DW bought some fish at the local market that had been frozen but thawed due to a failed large commercial freezer (store ad implied that is why it was thawed vs. sold still frozen) .

Yuk, did that...

Have built small experimental units with BBQ propane, ran thru a drier, work great with R22 txv/scroll compressor. Water/water unit outdoors where any R290 leak can flow downhill.

One of the...

R290, BBQ fuel basically, just dehydrated.

Widely used in Europe and Australia.

Installed minisplit at son's place, works well.

Since at a relative's house, thought to do some experimenting as time available.

Has IR remote control, looks to be RS485 links.

Anybody...

Most know what side of the bread their butter is on! Folks who deliver oil will swear by it.

Recall reading a survey in the early 1950s, when nat gas distribution was just geeting started in...

I love the title of that, SEER for dummies.

When SEER first was promulgated, thought (and still do) it was a bureaucratic concoction to enable the social control freaks to attach a simplistic...

Hmm, interesting old thread as the first house I bought (1967) had a central #2 heater.

2 ft sq brick chimney, 8 inch 1/16 thick steel flue. Under the flue was a 6 in dia akbout 1/4" thick...

Thanks barbar, that is the type of first hand practical experience I was seeking!

I'll take a look at reworking the louvers, may then even mount lower as you suggest.

Well was thinking of a shelf 2 ft above it, but could lower the minisplit to near the floor so a shelf over the top can be at beer can height?

Actuall, the top of most indoor sections are grills,...