Furnace Filters Affect on 首页 Health and Efficiency
In the Midwest out HVAC systems are particularly important.
学习 why you should regularly changing your home's filter to keep your equipment running efficiently and your home comfortable.
In Minnesota, we spend 60 percent of our utility bill on heating and cooling our homes. If you use a 炉 or central air conditioner to keep your home comfortable, it is important to change the filters regularly, especially the filter found in your 炉. Clogged filters can impact how well your equipment runs, 降低效率, and even shorten its lifespan.
Why are filters important?
Furnaces pull cold air from your home via the cold air return ducts, 加热空气, and then deliver it to the house via the warm air supply duct that splits off to various rooms. The 炉 filter is usually found between the two ducts.
The filter’s primary purpose is to protect the equipment by removing dust, 微粒, and debris from the air before it goes into the 炉. Some filters can also improve air quality by removing very fine particles like pollen and pet dander.
A filter that is clogged with dust and 微粒 restricts the air flow into the 炉, making it work harder. The 炉 will then take more time to deliver warm air to the house. Restricted air flow can also lower the efficiency of the 炉. Forcing it to run with a clogged filter for too long will damage your 炉.
Regularly changing the filter keeps your 炉 running efficiently and your home comfortable.
How do you replace a 炉 filter?
Changing a 炉 filter is a fairly simple task. The basic steps are as follows, but make sure to refer to your 炉’s manual for exact directions.
1. Turn off your 炉.
2. Remove the existing filter.
3. Insert the new filter — make sure it is the right size. Also make sure to face it the correct way by looking for the arrows or markings that are often on the cardboard part of the filter frame.
4. Turn your 炉 back on!
Filters can be purchased from your local hardware store, 亚马逊, or even big box stores such as Target and Walmart.
How often do filters need to be changed? Which filter should I buy?
The short answer is that it depends. It is best to check what your 炉’s manual recommends. Some filters should be replaced every month, while others only need to be changed every three to six months. Some filters can be rinsed and reused. If you look at your filter and it is grey with dust, change the filter. If your filter is about an inch thick, it likely needs to be replaced every month. A filter that is three to six inches thick can likely last several months.
If your 炉 uses an inch-thick filter, be sure to select one with a Minimum Efficiency Reporting Value (MERV) rating of 8 or less. When the MERV is higher than 8 for this type of filter, it can negatively affect the air flow through the 炉.
Filters with high MERV ratings are very restrictive in order to remove extremely fine 微粒 from the air. While this might initially be helpful, 一旦堵塞, a high-MERV filter quickly becomes too restrictive for your 炉. To prevent damage, replace your high-MERV filter at least every three months. If you are interested in a filter with a MERV rating higher than 8, plan to use a 4-inch filter instead of a 1-inch thick filter. An HVAC professional can retrofit such a filter to your current ductwork if you don’t already have a slot that can hold a 4-inch filter.
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