Ask the dealers you are considering how long they have been in business. Common sense says that older, more established companies will have a better record of customer satisfaction. Conditionaire has been serving this area since 1971.
Check to see the dealer’s contractor’s license. Dealers must have a license to receive the permits needed for the job. Only licensed HVAC contractors can legally purchase the refrigerant needed for air conditioners and heat pumps.
Ask for references ! Then, follow up by calling those people and asking them how satisfied they were with the dealer.