Our 18 year old two story house has one unit for each level. The upstairs unit was not cooling so we called MLD on the strong recommendation of the previous owner of our house. After discovering our problem was deterioration due to the age of the unit we decided to replace both originally installed units with new 5 stage Infinity units by Carrier. The units were available and were scheduled for installation 3 days after the initial service call. The crew arrived about 8am and the new units were quietly running at 4pm the same day! We were briefed on the new thermostat operation the next business day, received our warranty information and necessary paper work and are enjoying a new feel in our house with lower humidity levels produced by this type system. Everyone from MLD is courteous, prompt, communicative, efficient and professional. When the Texas heat becomes intense and any trouble comes from your air conditioning equipment you would be wise to call MLD! – Ron H.