Why are these ducts so dirty

Lately, I have been noticing that one of my utilities has been operating slower than it normally does. One might guess I am talking about my internet provider however I am not. I am speaking about my natural gas service. I observed this because the burners on my stove plus in my furnace are not as strong at the same levels as they were a month ago. It is not the largest difference, however it is noticeable plus I am a bit worried about what this means. I called the power company about this plus they said it was rationing due to a temporary shortage. It is the middle of Winter, I need to run the furnace to heat my home, plus there is currently a shortage of gas? This is completely unacceptable plus I let the buyer service representative guess about it. To be even-handed I should not have yelled at him, however it is mind-blowing that there is not enough gas to go around right now. I guess love I should be using another kind of power source however that would be an fancy hassle to undertake. I would have to purchase a up-to-date furnace plus have an Heating plus Air Conditioning worker hook it up to the rest of the Heating plus Air Conditioning system. That is thousands of dollars I am not prepared to spend right now. The person at the power company did say this was only going to be a temporary thing plus that they are still able to supply everyone with gas, however the thought that something love my furnace or tepid water furnace could all of abrupt be useless in the middle of Winter is a frigid one.

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