Due to the fact that the bulk of the unit hangs out of your window and is exposed to the elements year round, window air conditioners have a greater tendency of breaking down when you need them cooling the most.  Now, being the air conditioner guy that I am, you would expect me to tell you to call out your local AC repairman because it is usually an easy fix.  However, with labor prices going up and up, and the price of window air conditioners coming down (about $300-$400 for a descent air conditioning unit) the right move may be to scrap the old junker and order up a new one, especially if your existing unit is outside of any manufacturer warranty period.

If you run the numbers and decide that buying a new unit is the thing to do, then here is a way to cut your costs even further.  DO NOT THROW YOUR OLD UNIT IN THE TRASH.  You need to take it down to your local scrap metal place and cash it in for around $50 worth of Copper Tubing that is inside of the unit.  You will get the most money form the scrap yard if you remove the copper from the unit yourself, otherwise they will factor their labor into the the overall value and reduce your take considerably. Another thing that I would advise is to call around to find out what they are paying for copper before hauling it down there and compare that to the price of copper on the open market.

Most scrap metal places will pay you cash on the spot.  Now you just cut $50 off he cost of your new unit.  Either that or you can just pocket the found money and not tell your spouse that I told you about it (-;

1. 2010 is the magic date when Freon begins to phase out. No new equipment will be manufactured using freon (R-22) coolant. Once the network news turns this into their hot topic, then you’ll be behind the curve as everyone will be jumping on board and quality installers will be in demand.
2. If something happens with your job or other circumstances arise that require you to move, it will be much easier to sell a house already configured with PURON air conditioning. It will not add to the value of your home, but in a buyers market it is a strong incentive to choose one property over another.
3. Some (not all) New Home Air Conditioners will qualify for a tax credit of 30% of the total cost (including installation) up to $1,500 in 2009 and 2010. This is what we will focus on in this post.

In order to qualify for the tax credit, you must purchase and install either a SPLIT SYSTEM with a SEER rating of 16 or higher and an EER rating of 13 or higher, or a PACKAGE SYSTEM with a SEER rating of 14 or higher and an EER rating of 12 or higher. You don’t have to be replacing an older unit to qualify, but if you are you will most likely have to replace your heater too if it acts as the air handler for your home air conditioners. To verify if you are eligible for the tax credit, you will need the MANUFACTURERS CERTIFICATION STATEMENT for the equipment you plan to purchase. This is available through your contractor, or the equipment manufacturers website.

What is SEER and EER?
SEER is an acronym for SEASONAL ENERGY EFFICIENCY RATIO and it measures how efficiently home air conditioners will operate over an entire season. The calculation compares the cooling capacity in BTUs versus the energy in Kws that is consumed over the same time. This is just an FYI, because this calculation is done by the manufacturers and is clearly marked on the unit.

EER or ENERY EFFICIENCY RATIO is pretty much the same thing, but this time it is measured with a constant outside temperature. The number derived is BTU hours per watt and this number is also provided by the manufacturer.

In both cases, the higher the number, the more efficient the equipment is rated. As of January 2006, all home air conditioners sold in the US must have a SEER rating of at least 13.

SPLIT SYSTEM vs PACKAGE SYSTEM
A split system has THREE COMPONENTS, the outdoor cabinet with he condenser and compressor, an indoor cabinet with the evaporator coil, and an air handler that pushes the cool air through the ducts which is usually incorporated into the heater unit. With a split system, air is recirculated within the home.

A package system has all of these components located in one cabinet which is located outside of the home. With a package system, new air is circulated into the home from outside and return ducts are sent outside.

About a month ago as the temperatures were sustaining in the 100+ range here in Texas, we noticed that our 20-year old Trane system was running for about 5 minutes, cutting off for about 2 minutes, thn kicking in again.  The temperature was getting down to the 81 degree setting on the thermostat (…you see Mr. Obama, not everyone sets their air conditioning to 78), but the humidity was never getting below 50% because the unit didn’t run long enough to effectively bring down the humidity.  Basically it was short-cycling.  Now, we’ve never had this problem in the past so we ran a full perventative maintenance on the system and found that the freon level was down about 20%, but mostly that the clutch on the blower motor was starting to fail.  It was drawing some serious amps in order to kick in.  I could only imagine what the electricty bill was going to look like for this month!

Even though the Trane unit was still working, we decided it was time to get serious about replacing this old unit before we experienced an outage and at the same time, reduce our electricty bill.  Another thing that factored into our decision was that the adjoining central heating system was one of the old pilot light jobs that have been phased out some years ago due to safety concerns.  We contacted a couple of home air conditioners installers who quoted us on a new central air conditioning and heating systems and we finally settle on a Carrier 24ABB4 (14 SEER Rating) split system with Puron refrigerant, and a Carrier 58STA/STX heater.  There were more energy efficient systems available with a better SEER rating that would quality for the new tax rebate, but we could not justify the increased cost vs savings.  The system we chose will give us the best bang for the buck.

Now that we’ve signed on the bottom line and scheduled the installation date, all that is left is the perparation.  In the next post, we’ll tell you all about the installation process and the decisions we needed to make along the way.