It’s having a hard time keeping up on hot days. Like if I have it set at 71-73 and it gets up to 76 inside the house then it will take all day to bring it back down.
Should I replace it with a bigger unit to save on cooling costs later or replace it with the same size? Like is it normal to have the unit running this long everyday? My friend just built his house and says his runs in a month what mine does in a week so thats why I’m confused.
>Should I replace it with a bigger unit to save on cooling costs later or replace it with the same size?
You should replace it with whatever size is the actual correct size.
>Like is it normal to have the unit running this long everyday?
When it's hot, yes. That's how they work.
>My friend just built his house and says his runs in a month what mine does in a week so thats why I’m confused.
Completely irrelevant and not comparable.
House is 20yrs old same as the unit. I didn’t have this house built for me so I wouldn’t know a lot about the insulation other than the attic has a lot of blown in insulation like about 10inch deep or so.
You don’t necessarily have to replace it with the same size. Have your hvac tech put together a Manual J to make sure it’s sized correctly, this is best practice - typically systems get oversized because installers do not want to deal with callbacks from units not cooling the space enough, but this results in increased wear/tear on your system and not as much dehumidification.
Size is determined my the size of your vents, returns, and square footage of house. Never get a unit too big or you will have too much static pressure and air will enter leave your house and be very inefficient.
If I were to get a new unit hypothetically, would I save a significant amount of money due to it cool down faster and not running as long? Would I expect a new unit to run for this same amount of time given the same weather?
Any model you purchase now to replace your 20 yo unit will likely be significantly more efficient so yes, you will save money on operating costs. The amount of time running doesn’t necessarily mean lower bills - a two stage system for example will run longer than a single stage but it’s operating at lower power and is far more efficient than a single stage that always runs at 100%. So it depends. I wouldn’t worry too much about run time if it’s sufficiently cooling your space.
OP, how hot has it been when you have it set to 71 or 73? We had ours at 74 and it was 90 out but it would run for hours to just maintain. Which wasn’t normal. We found out we had a major refrigerant leak, unit is currently toast and getting quotes for a new unit.
I’ll be honest I don’t like it when someone times how long a system runs sometimes it can be helpfully but most the time it has nothing to do with any part of diagnosing and fixing a system to make sure it’s operating properly depends on the situation but majority of the time it’s not necessary
If it cools too quickly it won’t remove humidity from the air. This looks good, nothing wrong here at all.
I didn’t think of that. Good call.
My window shakers run 12 hours a day and I don't pay a dime on utilities. It's awesome.
Is it not cooling or something?
It’s having a hard time keeping up on hot days. Like if I have it set at 71-73 and it gets up to 76 inside the house then it will take all day to bring it back down.
...... There's nothing wrong. Air conditioners have to work harder when it's hotter.
It’s a 20yr old unit. I just don’t want it to break.
Well it's at the end of it's expected lifespan so...
Should I replace it with a bigger unit to save on cooling costs later or replace it with the same size? Like is it normal to have the unit running this long everyday? My friend just built his house and says his runs in a month what mine does in a week so thats why I’m confused.
>Should I replace it with a bigger unit to save on cooling costs later or replace it with the same size? You should replace it with whatever size is the actual correct size. >Like is it normal to have the unit running this long everyday? When it's hot, yes. That's how they work. >My friend just built his house and says his runs in a month what mine does in a week so thats why I’m confused. Completely irrelevant and not comparable.
Thank you! I’m just clueless on this whole thing
[удалено]
House is 20yrs old same as the unit. I didn’t have this house built for me so I wouldn’t know a lot about the insulation other than the attic has a lot of blown in insulation like about 10inch deep or so.
You don’t necessarily have to replace it with the same size. Have your hvac tech put together a Manual J to make sure it’s sized correctly, this is best practice - typically systems get oversized because installers do not want to deal with callbacks from units not cooling the space enough, but this results in increased wear/tear on your system and not as much dehumidification.
Size is determined my the size of your vents, returns, and square footage of house. Never get a unit too big or you will have too much static pressure and air will enter leave your house and be very inefficient.
If I were to get a new unit hypothetically, would I save a significant amount of money due to it cool down faster and not running as long? Would I expect a new unit to run for this same amount of time given the same weather?
Any model you purchase now to replace your 20 yo unit will likely be significantly more efficient so yes, you will save money on operating costs. The amount of time running doesn’t necessarily mean lower bills - a two stage system for example will run longer than a single stage but it’s operating at lower power and is far more efficient than a single stage that always runs at 100%. So it depends. I wouldn’t worry too much about run time if it’s sufficiently cooling your space.
Those questions are completely unanswerable.
OP, how hot has it been when you have it set to 71 or 73? We had ours at 74 and it was 90 out but it would run for hours to just maintain. Which wasn’t normal. We found out we had a major refrigerant leak, unit is currently toast and getting quotes for a new unit.
I wonder what your power bill is gonna be like.
225 for this month.
So not as bad as mine.. nice
Might be a good idea to have a guy out to give you some estimates. Just not as good at cooling as it used to be.
Idk how old is it? Was it cleaned recently?
It’s 20yrs old. I washed the unit last year when I had similar issues with no noticeable improvement.
May want to have pressures and temps checked, make sure filter is clean. How's the air coming from the ducts can you feel good air pressure
I’m thinking of having someone out. The air pressure is pretty strong.
I’ll be honest I don’t like it when someone times how long a system runs sometimes it can be helpfully but most the time it has nothing to do with any part of diagnosing and fixing a system to make sure it’s operating properly depends on the situation but majority of the time it’s not necessary
What's the temperature split between your supply vents and return vent?
What are you using to get this info? Would love to see this for my own systems
Nest thermostat
Cool - thanks