Latest threads in HVAC Discussionsshow only best voted threads
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operating cost calculator
it's been awhile since I've been in this group. curious, is there a generic operating cost calculator - heat pump versus = fossil fuel - that allows you to adjust you HP cut-off setting based...
6
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15 years ago
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6 | |
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Using water at 57 degrees to cool house
The standard chilled water systems use water cooled to about 45 degrees going into the heat exchanger and a 10 degree rise in water temperature in the heat exchanger. I am not sure what the...
9
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15 years ago
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9 | |
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murder & air-conditioning repairman
"..A Californian air-conditioning repairman has pleaded not guilty to the stabbing deaths of two women, including a former girlfriend of US actor Ashton Kutcher.."
4
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15 years ago
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4 | |
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Want to know more about the Centralized air conditioning
hiiii i like to know about centralised air conditioning were district cooling is also please check my site and suggest to improve it any technical knowlegdes are most well come
4
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15 years ago
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4 | |
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mini-splits
Why are all mini-splits made to be so wide?
3
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15 years ago
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3 | |
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Wine Celler Cooler
I=92m looking for information on using a residential AC unit as a wine cellar cooler. It is set to 55 deg F. The house was built in 1891 and =BD of the basement is used for a will cellar. The walls of...
5
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15 years ago
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5 | |
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HVAC condenser replacement
I lost my HVAC compressor because my heat pump system lost its Freon R22 two times (Tube breakage in the condenser unit). Oil may be lost with the Freon, except when there is very small seeping leaks...
8
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15 years ago
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8 | |
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Condenser Motor Or Capacitor?
About two years ago the capacitor on our external AC condenser failed and was replaced. The unit has ran fine since then. Last night the fan stopped and the unit began making more noise. Poking the...
102
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15 years ago
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102 | |
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Question for the pros-- Where can I get an OEM contactor for an AS Heritage 18? ==> please read in...
I live off the beaten path and it's a wait to get service for anythng out here. I have an AS Heritage 18 and want to buy a few spare parts for when this thing stops working. Where can I get an OEM...
1
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15 years ago
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1 | |
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ductless a/c
Looking into supplementing oil heated, hot water home with a ductless a/c - heat pump? Are there major disadvantages of cost to use the heat portion in cooler months of Oct-Nov, March-April in zone 5?...
2
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15 years ago
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2 | |
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Condenser Coils
I'll ask the question before going out to check model #, etc. since, depending on the answer, all that may be academic. I have a Heil 3.5 ton unit - probably 20 years old (mobile home). Just...
13
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15 years ago
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13 | |
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Books on air conditioning and heat pumps
I am interested in increasing the efficiency of a central air conditioner system. Does anyone have any recommendations on books that have information on geothermal system design. I feel I am fully...
7
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15 years ago
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7 | |
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Advice needed
I need to assemble a cold plate system for a marine freezer for the boat I am building. I have purchased 3 used cold plates aproximately 18" x 24" x 4" that appear to be in good condition. They all...
10
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15 years ago
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10 | |
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Furnace Wont Stop Heating
At some point this summer my furnace has decided that it has something to prove. It is displaying this by not turning off...ever. It started randomly with apparently no changes being made at all. The...
9
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15 years ago
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9 | |
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my first R744 installation
just completed a 4 day installation of a R744 system, complete with teardown and redesign of ducts, airhandler and lineset. will take some pictures after I recover.
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15 years ago
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