Business ProfileforA+ Derr Heating & Air Conditioning, LLC

I purchased a new heat and air unit from A+ Derr believing they were good company. 1 i wanted an electric furnace and central air they told me they couldn't I had to go with a heat pump I have some experience with heat pumps I didn't want it BUT it was already cold and had no other choice now this whole unit was 7000. which was financed on credit card. when installed the 2 guys that did the install told me that being this time of year, they would need to come back in warmer weather to check the coolant level which they never did?? in the purchase of the unit they were supposed to change the air filter twice which they did both times in the spring or fall they weather was cool I discussed with the service guy the fact that the AC wouldn't cool the mobile home they both told me it should with no problem I have called the business 3 or 4 times but they tell me it will cost me a service charge plus whatever the coolant cost?? they also do this since I declined there service agreement which is 235/year but if the parts are under warranty why do i need the service agreement?? I believe they should have come back and checked the coolant level without me having to call or especially charging me more money this unit is only 16 months old. if the installment guys knew it needed checked in warmer weather, why didn't they simply do that now I must pay a service call plus the cost of the coolant. and if that's the case I feel I was ripped off big time since I have had this done, I have talked to other business that do same thing. they have all told me there was no reason I can't have gotten and electric furnace and central air and much cheaper. I feel they put this unit on a credit card got their money and now want more to do what they should have followed up on for the 7000 dollars. today June 30th, 2023, the thermostat is set on 73 and ALL day its been at least 78 inside and right now its 81 if this was a new unit why won't it do better? I think they knew it wouldn't do well because coolant wasn't at right level or so that's what their service guys both told me?? why cant they come check it since i was told they would need to?? without charging me I feel i already paid them i actually called them last year with same complaint but once I was told there would be a service call charge and coolant per pound charge, I told them to forget it Today it was explained to me if I wanted to get the yearly service agreement for 235 per year there would be no charge for them to come out?? sounds like they are just wanting to get more money for job they should've done right the first time