Were in Az and replaced our unit this year with a Kenmore and keep the tstat at 77-78 during the day, and the house always ends up over 80 degrees by the early evening.
2007-07-18 15:55:11 · 7 answers · asked by Debbie B 1 in Home & Garden ➔ Maintenance & Repairs
have to agree with pen. but i need to ask you a question and you can answer them in the process of taking care of the issue. are you leaving all the doors in the home open?
if not the air circulation through the home is not able to do it's job, and if the contractor figured the load ratio to the a/c system, he/she calculated what was the ability of the system
based on what the sq. footage was, not that the kids kept their doors closed, or you. it is more efficient and productive
for a heat pump to circulate the air, if a room is closed off
it will reduce the ability to handle the air in those rooms.
a pro should have told you this and should have offered means to keep the family/rooms in comfort in every season.
hate to say it but did they match the system? that could be the main problem. for example (please remember i am not there so i am speculating) if you had a old 4 ton unit that "broke" what was the capacity of the air handler (most known by customers as furnace). they must match, if not, there should be modifications to the inside unit or changed out. call the contractor/company , you are not satisfied,
and sadly me to, kinda makes us all look bad.
2007-07-18 16:30:14 · answer #1 · answered by barrbou214 6 · 0⤊ 0⤋
I see from your questions that you have doubled the size of the AC unit. Did you replace the "A" coil in the forced air furnace at the same time? Did the contractor do anything with the furnance blower motor? I don't know if the duct work can handle the increase in air flow required for proper operation.
I saw where you have doors open and fans on to circulate the air. Did you try lowering the thermostat several degrees? It could be that the calibration is off.
What about the insulation in the ceiling and the walls? I know that it will make a difference in the temp and in the electric bill also.
One other thing, you can try. Go to the thermostat and move the switch for the fan to the ON position from the AUTO position. Set a timer to remind you to turn it back to auto after you are finished with the test. This will keep the air circulating through out the house and let you know if the AC will keep the house below 80. Once you determine if it can keep the house cool don't forget to turn the switch back to auto.
2007-07-18 19:42:11 · answer #2 · answered by Fordman 7 · 0⤊ 0⤋
There are many factors to consider. How big a house - is it sized right. Do you have adequate insulation. Also turn the thermostat down further. Alot of thermostats are not accurate - you just move them to where you feel comfortable. Many times on new installations there is a leak of freon that causes you not to get good cooling capacity out of your unit. Look at the outside unit. Feel the air coming out the top - is it hotter that the ambient temperature. Look at the 2 copper lines coming in to the unit from the house. Note: the little line may be hot!. Observe the big line( it may be insulated) wherever it is exposed or coming into the unit it should be cool to cold and sweating. If it feels warm while the unit is running and you have some heat coming out the top your charge is low and adding freon will recover you lost cooling capacity. If it is cool to cold then it is probably charged correctly and you need to make sure your air filters inside are clean and you have good flow. I have also seen times where the ductwork in the attic had leaks that lost some of your performance. If the line outside is frozen you may also be low on freon and the inside coil has frozen up and losing air flow.
2007-07-18 16:07:54 · answer #3 · answered by polarbearchp 2 · 0⤊ 0⤋
What's the question?
If the stat is set at 78, it's perfectly normal for the home to get to 80 or 81 before the a/c kicks on.
All thermostats have a swing, somewhere between 2 and 4 degrees. Some of the programmable thermostats can be set for a smaller swing.
2007-07-18 16:02:35 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Is the filter clean ? Are the refrigerant pipes icing up in the unit ? Is there enough return air? I actually installed a unit that is to large ( for a planned addition) and had to put ducts in garage because there was not enough air flowing over the coil. The slightest restriction of a dirty filter will not allow it to cool.
2007-07-19 01:12:08 · answer #5 · answered by Gary B 2 · 0⤊ 0⤋
Rule of thumb is 350 to 500 quare feet per ton of ac..this is rated on 8 foot ceilings..other factors are leaking skylights, higher walls, vaulted ceilings etc....How big is your house? 4 tons should cool 1400 to 2000 square feet
2007-07-18 17:21:37 · answer #6 · answered by pcbeachrat 7 · 0⤊ 0⤋
Debbie you must have poor insulation.
2007-07-18 15:58:01 · answer #7 · answered by wayne 4 · 0⤊ 0⤋