New A/C - 3 Ton

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It would be wise to try and find a contractor who can measure the heat load for the house. Figure out what tonnage you need. Now, as to your questions.....
--

Christopher A. Young
You can\'t shout down a troll.
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Then WHY are you TRYING to give him information?????
You are a complete disgrace to the HVAC industry... why don't you STFU and go back to school, IF being an HVAC tech is in your dreams?
Till then, you are just a homeowner in disguise... misleading the unfortunate people that you TRY too steer along the way.
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I am in south Mississippi, so I have a pretty good idea of what your up against as far as heat/humidity in the summer. Kenny gave you some good council, and your about to get some more. See inline comments

3 tons is most likely oversized for your home. After having a Manual J heat load/loss calculation done, you may very well find that you don't *NEED* but maybe 2 tons. Part 2 of this, is when you do get the new system installed, you need to look into the environmentally friendly R-410a refrigerant instead of the old R-22.

The new system should run approximately $5500 plus tax, installed(not including any required ductwork). A complete room-by-room heat load/loss calculation to correctly size the new system for your home For that $5500 you should also get the following included.... Top quality equipment, 10 year parts and labor extended warranty, Installation including..... Any required permits and inspections, New touch screen programable thermostat with built in humidity controls, Filter base on the new air handler, The first year supply of high efficiency pleated filters, New correctly sized refrigerant lineset, New slab for the heat pump to sit on, New disconnect with a breaker and new whip for the heat pump, Run all new control wires, If the air handler is in a closet, resurface or replace the shelf decking, Replumb the condensate drain with a proper trap and clean-out.
If the air handler currently has aluminum wire going to it, expect an extra cost to replace that too. You can get it done right, or you can get it done cheap. Either way its a decission you will have to live with for the next 18 - 20 years.

You A/C guy is lying to you here about the coil, but yes, you would be a whole lot better off with a new system, and much lower utility bills.

Yes a heat pump is really the way to go. Consider this... if you have a new high efficiency heat pump system installed, and it cuts your electric bills by 60%, how soon will it pay for itself in energy savings?? FWIW, there is a Federal Income Tax credit available for systems that are certified as a minimum of 15SEER with HSPF of 9.0 or better.

His price is way too low. If your "tech" is only charging $3500, what corners is he cutting, and what is he leaving out to be able to do it so cheap??

It depends on the actual calculations as to the specific requirements for your home. Its been my experience that you may not *need* but 2 tons for 1200 sqft built in the 70s.

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It really is a no brainer............ New system!

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