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Set to Cool but Blowing Hot: Air Conditioning IssuesIf your HVAC settings appear to be correct, why in the world is your air conditioner blowing hot air? The most basic function of an A/C is to deliver cool comfort, so if you’re feeling a warm blast from the vents instead, something’s definitely amiss. It may be a simple matter you can resolve yourself or it may require diagnosis by a qualified technician. Here are some scenarios that might be at fault if your HVAC settings are blowing hot air instead of cool.

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HVAC system , air conditioner , air filter , refrigerant , thermostat settings , hvac settings

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"The technician was knowledgeable and upon request he was nice enough to educate me on the system and it's safety features as he completed his diagnostic and service."

Daniel Burke
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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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"Brian was very personable, explained everything he did and even wore booties so my carpet stayed clean! Hartman family & staff have always been wonderful Thank you!"

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MaryJane L.
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"Ked did a good job on both the furnace inspection and the Aprilaire humidifier installation. Knowledgeable and courteous."

Bob
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"I have called Hartman Bros twice for problems with my home air conditioning. Both times I felt that the pricing was fair. I appreciate that they seem to start with trying to repair and not jump to replace."

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

Tony Pohl
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"Our Sunday started with the air-conditioner not cooling our home. Monday same thing but not sure if it just couldnt keep up with the high temps. Tuesday decided to call Hartmans heating & Air Conditioning Very. Busy but said they would send a tec out on Thursday. Tec came we talked and he went to work to find the problem, We need a new start up switch , it was installed and after all his checking he gave us a smile and said we are back with the air conditioning working,, We have been with Hartmans for many years and are always so grateful, thankful for their help. Give them a calll."

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