Looking for some opinions and suggestions on the new AC unit on a rushed decision. After finding this forum I realized all the mistakes I made in buying a new AC system as I'm sure you all will too. The reason it was rushed is because we were leaving on vacation the day it stopped blowing cold air called a place out to find the compressor has failed.
I live in SE Michigan just outside of Detroit in a 1150sq ft 1960's brick ranch home. The AC system that was in the house when we bought 4 yrs ago was a Lennox Elite HS29-024-1P. Pretty sure it was a 13 seer 2 ton system. The furnace we have is a Lennox 80MGF series, not sure on all the details on the furnace.
Like said above came home from work Monday, noticed ac was blowing room temp air, turned it off, looked up online what to check. Realized compressor wasnt running but the fan was. Visually looked at capacitors and looked for loose wires, looked fine. Tuesday morning we called my wife cousins family friends small company (did their whole house/figured trustworthy if they had good service) They were in the area on a job and waited around til 4 for them to be done. I stood outside and watched, he checked capacitors and hooked up new one, checking voltage and explained what he did but got nothing from the compressor. He concluded the compressor went out. Sounded right to me but now wishing I got a second opinion. So he said to replace the compressor with
other parts that should be changed would be cheaper but not the best option. His other recommendation if we plan on living here for a while was all new system, his recommendation was the Lenox 13 acx. Seemed pretty comparable, 2 ton 13 seer. Against what I was thinking about making a rushed decision, we did and set it up for this past Monday. We knew the temps were going to be high coming home from vacation, we have a 20 month old and price seemed to be comparable to other people i know in similar size houses.
3 hr install, was blowing about a 15-20 degrees cooler than outside air. Seems like it was going to be fine. A few things now worry me on that fast decision. Yesterday it was 89 out and 30% humid. Ac was turned on around 11am, we set it usually at 77, it read 80 in the house all day until 9:30 at night it dropped to 79. At night I usually turn it up to 78, so I do that around 10pm, at midnight it reached 78 and shut off. Does not seem normal to me. Our old on did also struggle on hot days but I do think it would have preformed better on an 89 degree day. I do get a small brick ranch has a lot of heat on the outside, our attic is well insulated, did 10 inches of blow-in 2 years ago, newer windows, keep blinds shut. Most of the neighbors units run constantly all day too so maybe its just normal for the year house, size and many other factors. Just seems strange the ac can only cool 9 degrees cooler than outside temps.
So i guess my questions are, did I buy an undersized unit? I read on here that an AC company should do heat load tests or other calculations to determine the right size, they didn't do that. I assumed they matched to the old unit which for all i know wasn't adequate.
I plan on calling them about this and asking what they think the problem is or how they determined this was the right sized unit. I assuming I'm stuck with this now? or if they wrongly sized it couldn't I tell them they need to replace it with the correct size?
Just don't know my options as this is my first major appliance dealings and Im pretty sure I did it completely wrong. I'm almost thinking or calling another company just to come out and see what they say too. Lesson learned for everything in the future though but I payed a good amount of money, I should have a properly working ac unit. Last, how much does a furnace play a part in cooling, could our furnace prevent proper cooling?
Any suggestion, opinions and help will be appreciated