Furnace maintainance?

Question

I am eager to know what do they do on furnace maintainance. Will they clean inside the furnance.

Answer 1

if it is an oil furnace- change the oil filter and gasket and bolt gasket, change the oil pump strainer gasket and filter, and change the nozzle. the air filter will be changed to. the exhaust duct work will be removed and vacumed and cleaned out. the breach of the chimney will be inspected also. the heat exchanger will be inspected for cracks and also brushed and vacumed. after this an efficiency test will be conducted along with a pump pressure test. a test of the safties should be done to make sure everything is in working order.

.........................................

if this is a L.p or natural gas furnace- the air filter will be changed, a visual inspection on the heat exchanger looking for cracks or sighns of stress. the venting should be inspected. the burner orifices should be cleaned. an inspection of the gas line should also be done. then a test of the units safties to make sure everything is working

Answer 2

they change the oil filter fuel nozzle air filters and check the flue to make sure it drafts properly and they might vac out the inside of the furnace if it really dirty

Answer 3

In the combustion chamber, fuel mixes with air and is ignited to create heat, and that leaves soot on the inside of the chamber. The soot should be brushed down with a special tool and then sucked up with a shop vac.  An efficiency check of the furnace is also called for. Here's what else is typically involved in tuning up and maintaining an oil-fired furnace:

http://www.thisoldhouse.com/toh/article/...

Answer 4

They will replace the oil filter, if it is an oil burner.  They will do a "combustion analysis" which tells you how efficiently your furnace is burning the fuel.  If you have a forced hot air system, they will replace the air filters.  In an oil burner, they will also replace the "nozzle" which turns the stream of fuel into a spray for efficient combustion.  The exhaust ducting will also be checked for residual soot and potential leaks of carbon monoxide.  The ductwork will be given a new seal of masonry at the wall.  The interior combustion chamber will be cleaned with wire brushes for efficient heat transfer.  If they are conscientious, you will barely know they were there after they're gone.