Regular maintenance of your heating system is important and Furnace Cleaning should be a priority. Ideally, you should do this every year before you have to turn it on in time for the cold season.
As is usually the case, you will be advised by heating contractors and furnace filter manufacturers to hire the services of a qualified HVAC technician to do a routine check of your furnace and furnace filters. An HVAC technician, after all, is trained in this kind of thing, so he can spot defects that are not seen by an untrained eye.
If he notices problems with your furnace filter, you may have to invest in a new one. This is much better then having to fix the furnace itself as you can find many Discount Furnace Filters online.
Of course, though, you can not just totally depend on your HVAC technician. You can do simple maintenance work in order to keep your furnace working properly and/or prevent further damage.
First and foremost, if you are using propane or natural gas, you must shut off the gas and power supplies before doing anything else. Testing the furnace with the gas and power on is something that should be done by a trained technician.
The most that you can do to maintain your furnace is to change the furnace filter with preferably a high quality pleated style Honeywell Furnace Filter to replace your old one. You must make sure, though, that your replacement is compatible with your existing furnace filter. Although high-end furnace filters with high MERV ratings like an electrostatic air filter usually last longer, it may still be necessary to check your furnace filter on a monthly basis.
Another thing you can do is to check the intake and exhaust pipes of your furnace and make sure they do not have trees and shrubs growing into them. Try to remove the pipes and see look for obstructions, like leaves, maybe or something else.
It may also be a good thing to check your wires for any loose or shorted connections. The plug harness connections must be tested to ensure that they are not loose. You can vacuum the blower compartments as well as the burners so as to keep them from getting contaminated.
Your blower motor must, too, be checked if it needs oiling, in which case, you must get the services of a service technician. Usually, most home buyers in Houston find the blower assembly will have to be removed so both sides can be oiled.
Heat is trapped when there is a blockage in the drain system of your furnace. Instead of calling your technician, try treating the problem with household bleach.
Usually blockage occurs when the drain hose and drain trap have bacteria growing into them, restricting the flow of condensation through the drain system. Using household bleach can kill the bacteria along the drain lines.
Cleaning the burners and the flame sensor and checking the heat exchanger require the services of a trained technician. At the same time, ask your technician to look at the check pressure switches and the limit controls.
You can ask your technician as many questions about your furnace as you want. Knowing many things about your furnace can help you treat simple problems yourself, and this can save you a lot of money in the long run.