Derek Cole lists three signs your HVAC needs service: it's been over six months since the last check, you smell something odd from the vents, or it's heating or cooling slower than usual. Any of these means call a technician before a small problem gets expensive.
Number 1, it's been over 6 months since you had your unit serviced. Your system should be checked by a professional twice a year to make sure it's in tip-top running condition because your heating and air is one of the largest appliances in the home. So you want to make sure you're good to go for any season that comes forward. Number 2, you notice a funny smell coming out of your grills. You need to have your unit checked by a professional. A funny smell could be a not-so-funny problem. Number 3, your house isn't heating up or cooling down as quickly as usual. Could be refrigerant, it could be a fan problem, it could be so many different things. Get the unit checked, get the service. It's been over 6 months, what are you waiting on? Because problems are already starting.
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