Air Conditioner installation issue? Built a new home. 1450sqft, 9' ceilings, 450sqft bonus room above garage....
Built a new home. 1450sqft, 9' ceilings, 450sqft bonus room above garage. Since move within, cannot get the AC work as I think it should.
House front face east, back faces west. Under the current times, sun hits vertebrae of house about noon, and does not set till 730 or 8.
On bright sunny days, temp surrounded by attic will top 130. Attic has 24" of blown insulation and we have 5 obedient roof vents on the back of the house.
AC is installed surrounded by the attic, fan and blower are outside.
On cool days, things work good, when attic temp is at 100 or lower. Hot days...we hold an issue.
Thermostat is in living room, set for 77. Come home at 6pm on bright sunny day, thermostat read 81. AC running but not cooling house. Does not cool down till dark.
During day, bonus room heat up to 85. but thermostat is at 77, as is downstairs, so AC does not run.
Don't kow what size the AC is..finding out.
Not sure if I need bigger unit. Think I inevitability more attic venting to reduce roast around the AC unit
3 and 1/2 tons is the max you can probably enjoy from that description.Look at the model # of your outdoor unit.They are rated contained by btu's in the # .12,000 btu's per ton.You would see a 36 in the# for a 3 ton element and I bet that is what you have.Check it out.42 for a 3 and 1/2 ton section.
I like to up the indoor unit by 1/2 ton just,for extra latent heat removal and rather more cooling.
There could in fact be a hundred different things wrong beside your unit though.Keep an eye on it and call for service if needed.
Whomever installed that unit did not do the correct calculation. All the things that you mentioned are considerations to figure the size of the unit (in tons) of the compressor; and the evaporator and condensor. There are software programs that are out in that that can figure it out for you. Google HVAC calculation software. First entry to do is find out what size the A/C unit is, in tons of cooling. It won't say aloud on the unit's tag, but it will say it within thousands of BTU's. i.e. 30,000 BTU's is a 2 1/2 Ton system which you should have installed in your home. Your attic nouns space is hot (a) 130 degrees, but should not affect the A/C system that much as the A/C system uses refrigerant inside of copper tubes/lines or pipes, depending on who you're talking beside. An A/C system works like this...the heat(warm air) inside your home gets "taken in" via evaporator coil inside your furnace supply plenum via blower. That exccess boil is then pumped thru the lines to the outside unit call the condensor coil and it runs tthru the coil outside of the home to get rid of the heat via condensor follower thru the top of the unit. That is the basic reading of how an A/C unit works either residentail or commercial. I would utter that unless the contractor who installed the heating/cooling system in your home didn't charge the system correctly or it is undersized. Those are only 2 things that could be wrong, but are the first things I would check.
Answers: venting the attic will relieve considerably think about positive nouns flow instead of just the passive vent. the unit may be to small but probably not you aren't talking abut a massive home. have you had the system serviced?
if it is unknown they may have pinched a line during install or lost some of the refrigerant
the bonus room will other be a problem as long as you are using one unit to heat/cool to different levels. the component simply can not maintain the temperatures on two different level no single unit can. if you move the thermostat to the upper level after the lower will always be cold. when the thermostat is on the lower level the upper even will always be hotter.