Air Conditioning, Heating and Plumbing - Advice, Discussion and Tips from ARS®/Rescue Rooter®. Welcome to the ARS/Rescue Rooter Home Connect, your online resource center for information, answers and interactive advice about air conditioning, heating, plumbing and drain maintenance. As part of our commitment to providing exceptional service, we created the ARS/Rescue Rooter Home Connect to be a useful tool with many helpful ways to find what you need.
We just had our limit switch replaced two days ago, and we have the heat set on 70 but there is cold air coming from the vents. Plus the fan run constantly until i have to reset it. Our maintainence guy said everything should be fine and that he will be out again in the spring for our annual checkup.
The limit switch on your heating unit goes off if something gets too hot. Usually that means that there isn’t enough airflow through the system to push out the heat. First, I would suggest checking your filter to make sure it is clean and fits snugly. If that doesn’t solve the problem, call your contractor back to double check that the correct size limit was installed. If your contractor is not helpful, you need to consider getting a second opinion from a reputable HVAC contractor, like ARS/Rescue Rooter.
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