HVAC Compressors Questions:

Question #1:

Smell when hvac sytem turns on and appears to be mold growth ouside inside evaporator coil in attic?

we have been experience in our home 6 years last assemblage we had our sytem replaced our sytem is newborn and haven't ran a/c in about a period and overturned hvac on and smelled horrific went in attic no visuale signs of leaks etc but detected on right of coild case interior positioning attic there was modeling growth around accolade of coil case and this has never happened before with old organisation or newborn organisation what does this mean, ground and what crapper be done? Under warranty so was going to communicate to change coil? would this cipher the problem? And if it is the indoor coil how does this affect ducts and interior air quality? We hit a carrier 5 ton 2 pace grouping and in attic there is media filter, uncertain furnace, evaporator coil and outside sytem looks beatific it is a digit speed compressor we hit a two story home one sytem runs upstairs and below all vents smell horrific smell and only when a/c on when off for a daylong punctuation not when heater runs. In texas we ran modify all week today a/c on and smells
we hit a media separate in face of furnance that gets changed twice a assemblage we have the Preventive maintence finished also in fall in spring and this was just a rank new install terminal october our preceding organisation never had this smell of much dishonor odor and accross the accolade of evaporator wind housing there is spoiling growth as if hearty and cold expose is mixing but how? if sealed....pan is clean line is clean 6 eld never fould sensation and newborn install rank newborn digit year old only which gets checked regularly by hvac tech and so forth no problems but indoor coil housing outside by accolade to suppy distinction is mildewed and this smell exclusive occurs aftera/c been soured for life and it doesnt seems to be as cooled out of vents either so from my investigate this is a mildew growth inside coil case thusly growth on right by seal to cater distinction and crapper be from hearty and algid air mixing so how to resolve problem and avoid supply with teenager or mildew growing and blowing out our vents when a/c blows would be to change wind and sea

Question #2:

heat pump problem with outside of split system?

I have thermostat ordered to 68 i detected last night it did not come on until 66 and it ordinarily would hit ever become on at 68. Noticed the right compressor and follower not on no noisy or anything. Cycle every HVAC breakers in important panel immobile difficulty for hour or so then back to this problem. Any ideas?

Question #3:

anyone have hvac knowledge out there?

thanks for looking...Ok so here is my problem a few weeks past my landlord dispatched digit of his so called "maintenance men" to look at my heat/air pump he changed whatever of the settings on the thermostat and now my heat doesnt impact properly i hit did quite a taste of research and institute the settings drill just dont know how i should ordered it if you crapper respond gratify do..........
settings:
auxiliary heat 2,4,6,7,8,10, or 12 cycles per hour?
emergency heat 2,4,6,7,8,10, or 12 cycles per hour?
compressor cycle evaluate 1,2,4,5,6, cycles per distance I have this ordered to 4?
compressor protection 5,4,3,2, or 1 min. protection drill said safest on fivesome so i did
PLEASE HELP!!! AND THANK YOU!!!!!!!!

Question #4:

Why is my overload relay sparking ?

Its a commercial turbo air deluxe freezer, model # tsf-23d, the compressor wont turn over and i see the relay sparking, with an ohm cadence its stuck on same 1 ohm vibrating very fast backwards and forth and then its infinite ihms when turned off, it trys to invoke on the compressor then half a ordinal later it doesent invoke on, its just sparking and clicking.. Then i was watching it and i heard a lowercase signaling and boom! Smoke flew discover of the back but i dont k ow where it came from, i went to edifice for hvac, but i requirement whatever help

Question #5:

Why do most air conditioning systems not need a defrost system? (HVAC class)?

I think the answer is that the modify produced by the compressor is sufficient sufficiency so that a defrost grouping is not needed. Is this correct? Perhaps also the cold is constantly moving so does not hit a chance to withhold so therefore does not requirement defrosted?? I'm in an HVAC class. If I had to surmisal I conceive my compressor theory is correct---heat produced by it precludes need of a defrost sytem. Thanks!

Question #6:

What type of HVAC should I get?

I recently purchased a 2400 square foot, 4 news including basement and attic colonial shapely in 1942 in Roanoke, VA. The attic is ended and the level is partially finished, but I hit no idea the extent of detachment as that work was finished preceding to the preceding owner purchasing the home. The coldest average temperature in season is 27 degrees and the hottest cipher in season is 87. The current A/C is roughly 40 years old, and the current furnace is oil and roughly 45 eld old, so I've conventional quotes for newborn systems from two different companies.

The first consort quoted a 4 ton 13 SEER Carrier modify pump at 4600 and a 4 ton 15 SEER Carrier modify pump for 5600. Prices allow right unit, air handler, cold tubing, thermostat, and pad.

The ordinal consort quoted a 3 ton 15 SEER Trane XL15i heat viscus for 8240 and a 3 ton 17 SEER Trane XL16i modify viscus for 9943. Inclusions aren't traded on this quote, it just says a "Trane modify pump system" and lists a compressor in the warranty information.

All the units quoted become with electric backup.

The underway A/C is a Climatrol 2.5 ton. I don't want a unit that is likewise big for my ductwork, but I also don't want to pay 5k more on a organisation that is no more reliable or efficient.

I'm completely naif most this identify of thing, and my husband is no help, as all he cares most is initial cost. He is the digit who got the quotes and is just attractive these companies at their word, no questions asked. When I asked if they did a alluviation calculation, he said that they just measured the house.

I hit a third consort reaching this daytime for a quote, so I'm thinking to ask for a load calculation. If it turns discover that the tonnage I need is large than what my ductwork crapper handle, is my only choice to intend a unit too diminutive or have newborn ductwork installed?

Any suggestions?
Also, some portion questions I should communicate during my quote this evening?

Question #7:

How does a steam absorption chiller work?

This is not for a school project or schoolwork or anything, just asking this for my possess knowledge. My understanding is that, in whatever kind of clean system, squander modify in the modify of clean enters a steam sorption excitement unit, and someways makes the shack it is in cold. So how does the unit remove heat from whatever shack that it's in, making that shack cold, if it's supercharged by clean which is hot?

I know how a regular HVAC and A/C grouping works, one with a cold such as R134a or R124 getting tense finished a compressor, condenser, metering device, and evaporator, if that helps explain a clean sorption chiller.

Question #8:

Heat pump compressor about to fail?

We hit a 10 year old modify pump/air handler combo in our home. Last week the follower in the outdoor modify viscus started to squeal and hiss. We called in our HVAC pros and they said that the hissing was actually from the interior expose handler causing the compressor to overload. He read the amps on the compressor and it read discover to 27. Normal according to him was between 19-21 and that it was on it artefact to failure. He replaced the condenser and added part I don't recall, and said that we could hit a month left on the organisation or we could make it all winter. There was no way to tell. Replacement on the entire abstract is around 7000 installed. I'm at a loss on what to do at the moment. We are looking to intend finance but part of me wants to just take a quantity and wait until it dies to change it as we might get finished the entire season with it, and thus use our tax refund for the replacement. Does this seem reasonable? Is there anyway to tell based on the current amps of the compressor about how long we might have?

Here are the info of the unit: Rheem 10 seer, 2.5 ton, installed in 2001.

Question #9:

My HVAC unit squeals while fan is running?

We hit a HVAC grouping that is probably at the modify of its life. We've had no problems with it thus farther we meet moved into our home 2 years ago, but the system was installed in 2001 . We just started using the modify most a hebdomad ago, and when I overturned it on today, all was substantially for most 1-2 minutes and then the follower started to squeal. First intermittently and then constant. I turned the grouping soured and titled a pro. The pro said that he didn't think it warranted an emergency visit and told me to separate it as customary since it is ease producing heat normally. I decided to invoke the modify backwards on and defence next to the exterior organisation and center to it run. I noticed that right before the squeal started the organisation hissed first. It definitely does not good right, but my discourse is, how can I tell if it's the fan locomote or the compressor? Is there a artefact to tell? I hope it's just the follower motor that needs to be replaced, because reaching up with 7000 for a newborn unit is going to stink--big time!

The favoring isn't reaching until Wed. so I was meet wondering if anyone could give me whatever insight between today and then. Thanks!

Question #10:

Cost for new HVAC installed from sears.?

Having a newborn right unit, and inside fan organisation installed, using existing ducting/electrical/drains.
System spec; kenmore 4ton 14seer 47000btu cooling; 46000btu heating; uncertain pace fan; single pace compressor. Total installed outlay is 7740. Anyone know if that is high/average? Plan on getting second estimate but just curious.



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