In order to heat enclosed living areas, gas furnaces use either propane or natural gas. While gas is often referred to as an expensive means of fire, gas furnaces usually burn cleaner than oil furnaces and therefore have less repairs for their owners than oil furnaces. But when problems with gas furnaces do occur, they are usually easy to recognise and are not labour intensive to correct. Below are four problems with older gas furnaces that normally occur and what you can expect in terms of repairs.Learn more about us at Furnace Repair
No heat produces a furnace
If no heat is produced by your gas furnace, one of the following problems is likely to occur: a closed control valve, a blown fuse or tripped circuit, a damaged thermostat or a non-working pilot light. While you can correct these problems on your own, if you are not familiar with gas furnaces, it is better to call a gas furnace repair service (i.e. a heating and cooling company). An HVAC repair technician should be able to fix the problem on the same day, regardless of which of the above problems your furnace is experiencing, and none of the above problems would result in a substantial repair cost.
Insufficient heat produces a furnace
If less heat is generated by your furnace, it may be because the blower is concealed, the blower belt is loose, or because the philtre or burner is dirty. These issues may occur in tandem as well. A furnace that produces insufficient heat resulting from one of the above problems can usually be fixed on the same day at minimal cost, as with a furnace that produces no heat. If a repair technician for gas furnaces suggests that the problem stems from one of the above problems, but that some of the other problems seem immanent, save money and get them all fixed in one visit.
A Furnace Keeps Switching On and Off
If your furnace switches on and then switches off before the desired heat level is produced, one of the following problems is likely to occur: a clogged blower, a dirty philtre or an overly dry motor. In the first case, the engineer will use a vacuum to clean your blower and its surrounding area; in the second case, the engineer will replace or clean your temporary air philtre and reinsert your permanent air philtre; in the third case, the engineer will lubricate the engine by putting oil in the appropriate oil ports. The service cost should again be minimal in each case.
The Pilot Light of a Furnace Will Not Come On
For most furnaces, by kneeling to the floor, you can tell if a pilot light is on and looking at the underside of the furnace, where if the pilot light is running, you can see a tiny blue flame coming from a small pipe. One of three problems is normally caused by a pilot light that won’t light: a clogged pilot opening, inadequate gas flow due to an incorrectly set gas valve or a broken thermocouple. The solution requires light labour in each situation and can be fixed at minimal expense.