Lennar at Flagstone

I have had a Lennar home for 5 years and I think it’s ridiculous that I have to replace a coil in the AC on a unit that didn’t even last 5 years it’s a Lennox ac. The killing part I had them out here 3 times because the unit was loud of course they said it was okay while it was under the warranty of the house. No low and behold its replacement time! If they are such great homes they should not put sub par appliances in them!