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Have used One Hour for 9 years, since I purchased our heating and air conditioning units from them. They do the maintenance on our units for summer and winter and handle any necessary repairs. I count on them and trust them to keep our equipment in top shape. Their employees, from the office staff to the Technicians, are the best! Jimmy was here today to fix a problem we were having and he even went out of his way to get the part we needed today, so we would have heat this evening. I would totally recommend this company from sales to service you can't go wrong!