Frequently Asked Questions
Your 10 Most Common HVAC Questions Answered
We understand that for many homeowners, heating and cooling systems are out of sight and out of mind, until something goes wrong. Fortunately, you don’t have to be an expert—just trust an expert, like the pros at Interstate Heating. We’re always available to help and we’ve even created this page with answers to the most common questions you might have about heating, cooling, and indoor air quality systems. Read on or just call us for help—262-246-4772.
1. How can I save money on my monthly heating and cooling bills?
2. Should I close the registers and doors to areas of the home that I don’t use on a regular basis?
No, because your system was sized to heat and cool your entire home. When you change the area it services, it actually affects airflow in a way that makes your system work harder and less efficiently. A better way to customize temperatures in different rooms is with zoning that’s designed for this purpose, or with a ductless system that can address comfort issues one room at a time.
3. Why is my furnace blowing cold air?
If you have your thermostat fan set to “on,” it will blow air all the time—even when your furnace isn’t heating, which could be why you feel cold air coming from the registers. Also check your filter—if it’s dirty, it can cause the furnace burners to overheat and shut down for safety. Change the filter and check the fan, then call Interstate for experienced furnace repair if you still need help.
4. How do I know if I need to call a service technician for my furnace or air conditioner, or if it’s just my thermostat?
5. Why is there water under my air conditioner or furnace?
6. Why does my air conditioner have ice on it?
7. How do ductless systems work?
As the name implies, a ductless system doesn’t need ductwork—instead it delivers treated air to one or more indoor units through small, flexible conduits connected to a single outdoor air handler. The system uses a heat pump, which can heat or cool air as needed, so it’s a great option to make rooms more comfortable all year long. It’s also very efficient because it doesn’t create hot or cold air—it simple transfers energy in or out of a room to adjust the temperature.
8. What can I do about dry winter air?
Because cool air can’t hold as much humidity as warm air, it’s common for homes to feel dry in winter. This is especially true when air is then heated by a furnace, which wrings even more moisture out of it, causing dry skin, itchy eyes, chapped lips, bloody noses, and other problems. It can even affect hardwood floors, furniture, wallpaper, and more. Adding a whole-home humidifier brings moisture levels back up to the recommended 35 to 50 percent, without the hassle of constantly moving a portable unit or refilling a reservoir.
9. I don’t smoke or have pets—why would I need an air purifier?
10. Does it matter who fixes my HVAC equipment?
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