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pizzanook 04-11-2013 07:48 PM

Hvac calculator
 
My home is 2556 sq.feet with 14 ft ceilings in the family room,kitchen,and dining room.What size a/c unit would I need,what brand is good,and should I replace the handler as well?Thanks.

beenthere 04-12-2013 04:33 AM

Probably should change both if you want the efficiency the new outdoor is rated at.

As far as what size, not enough info to tell you. But you can use this and find out. http://hvac-calc.com/

pizzanook 04-12-2013 04:43 AM

hvac calculator
 
The a/c company says that I have a 5 ton right now,but I think the builder didn't know what he was doing.The house was built in 2002(cookie cutter)and the air temp.never felt good.It's a Lennox,tall unit.The a/c company says they will replace the compressor and coil lines only.Waiting on pricing.Also I live in the Tampa area.

JScotty 04-12-2013 08:33 AM

Quote:

Originally Posted by pizzanook (Post 1157419)
The a/c company says that I have a 5 ton right now,but I think the builder didn't know what he was doing.The house was built in 2002(cookie cutter)and the air temp.never felt good.It's a Lennox,tall unit.The a/c company says they will replace the compressor and coil lines only.Waiting on pricing.Also I live in the Tampa area.

If you aren't sure the unit is sized right request they do a load calculation. They may charge you for it, but if you're going to spend money replacing a unit I'd pay the extra little bit to make sure it's going to work right.

Marty S. 04-12-2013 11:52 AM

The air never felt right as in too hot or too humid? If the answer is too hot what temperature are you trying to achieve? They replacing a broken compressor or the whole condensing unit?

pizzanook 04-12-2013 01:45 PM

Too humid and replacing the compressor and coils only.Not the handler.I heard you should replace the handler as well.Is that true?

beenthere 04-12-2013 02:50 PM

many times its easier to replace the air handler, then just the indoor coil.

Too humid is often an indication of an over sized A/C.

pizzanook 04-12-2013 05:40 PM

I know you can't give me an exact number,but I have 13 windowand four sliding glass doors that lead to the sunroom.2556 sq. feet.4 bedrooms and a study with 9 ft. ceilings and rest of house has 14 ft. ceilings.I know it goes by volume,but what do you think?I'm 20 minutes south of Tampa,fl.

beenthere 04-12-2013 05:56 PM

http://hvac-calc.com/

The above will tell you what size you should have. Its 49 bucks, a deal to get your humidity under control.

pizzanook 04-13-2013 06:08 AM

Just received my quote for a complete ICP Grandaire 5 ton 13 seer for $5250.Doesnt have the reverse heat pump in the compressor ,just a heating coil like your oven.That is my first quote.I know my parents paid $4750 for a Bryant 3.5 ton 15 seer with the UV light three years ago.Any suggestions.The company was stating that the UV lights don't really work(just another upsale for them to come out and replace it)

beenthere 04-13-2013 06:13 AM

Installed right they help.

pizzanook 04-13-2013 07:56 AM

So you recommend getting a UV light? What about a dehumidifier, will that help? Is the ICP a good unit?

yuri 04-13-2013 08:15 AM

If you have the $$ and want a better system for your climate this is what I would recommend.

A 2 stage AC and replace the air handler with one that has a variable speed ECM motor. Then you can run it on low speed all the time for better circulation and it uses very little elec for that as it is a NRG saving high efficient motor. the 2 stage AC will give you longer cycles which will dehumidifiy the air a LOT better. a 16 SEER or higher in your climate will save lots of $$ too. Most brands are good but like cars the more you spend the quieter they get as they are built heavier with more insulation etc and that can make them last longer. Lennox, York, Trane, Bryant/Carrier would be my pics. UV lights work well but they must be installed correctly so the light sees the air flow and bathes the duct with light properly. if they stick it in a corner then it won't see the whole airstream.

Lennox makes the humiditrol system which is unique in the industry and has some good reviews in humid areas like yours. quite pricey I expect but works well.
http://www.lennox.com/products/indoo...ty-systems/HD/


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