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What a Humming Air Conditioner is Trying to Tell YouNormally, a properly functioning air conditioner makes occasional pops, hisses, rattles, and a quiet hum that shouldn't be a cause for concern. However, if you notice a loud humming or buzzing noise, your unit is probably malfunctioning. Several issues can cause a humming air conditioner. Let's take a closer look at them along with their solutions.

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HVAC system , air conditioner , air conditioning , a/c problems , HVAC problems , HVAC unit , humming

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"As usual- excellent & friendly service. I would highly recommend this company."

Tony Pohl
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"Great first impression with the receptionist who answered my call after the first ring! She was friendly, professional, and genuine... The service repair technician was professional and took time to explain the repair that he recommended to the A/C unit. He fixed the unit on the spot. Not only great service, but great people too. Thank you, Hartman Brothers!"

Stephen Vachon
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"Very happy and COOL now. Caleb was super nice and seemed very knowledgeable!!! We still have a problem, but he got us up and running for the weekend after a long week of 90 degrees in our house. Hoping they send Caleb back on Monday to finish the job."

Deb
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John Wiesemann
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"Technician was on time, professional and completed our HVAC service promptly. Would highly recommend Hartman Brothers!"

Eric Korte
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"I have used Hartman Bros for many years. They offer excellent service, stand behind their products, give honest advice and are top notch professionals."

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"They always let me know when they are on the way and were on time - actually early! Always friendly and professional."

Joan G.
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"Ked Snyder is an excellent representative for Hartman Brothers. He is couteous, thorough and professional. Very Satisfied with your service and Highly Recommend it!"

Greg Andrews
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