FURNACE HOW TO BASIC TUTORIAL

how a furnace works and the basics of each component. This video will give you the basics on how to figure out what is wrong with your gas furnace.

Category:

Howto & Style

Tags:

• furnace
• repair
• how
• it
• works
• inducer
• draft
• motor
• hot
• surface
• ignitor
• las
• vegas
• henderson
• north
• heater

[AbilityJohn]

Do you mean you have a evap coil installed inline with your furnace? If you let an evap coil get dirty it can greatly lower your air flow and you should clean it. you can prevent it from getting dirty by using a good air filter and changing it monthly. You can clean your coil but i recomend having a professional do it. it is difficult and you don't have the access to the proper chemicals. These chemicals are contractor only items.

[constanceadams1]

My furnace is leaking water, this just started what could it be and is this something my husband can repair u think? What are some at home troubleshooting suggestions to track the leakage. Right now we only see it at the bottom of the furnace and its leaking down on my ceiling

[AbilityJohn]

@constanceadams1

The furnace can leak if it is in Heat if it is a 90% furnace. The tube comes off below the inducer draft motor. If your unit is in AC mode and it is leaking then it is due to condensation. The most common cause is a plugged condensation line wich is usually PVC (white) you can flush it from the furnace area through the pipe with compressed air.

[drinkinouttacups]

good vid. I have a probkem with my furnace that this video didnt cover though. The unit works fine but it makes a loud chugging noise almost like a train when it kicks in. I thought it was the belt but it looks fine, ive also read that it may need to be lubricated or bearings need to be replaced. If anyone has any ideas, post and let me know.

[AbilityJohn]

what kind of unit is it?

brand?

model number?

serial number? how old?

does it have a belt?

[drinkinouttacups]

It is a Lennox natural gas furnace.

Model #-G8-90-1

Serial #-6377A35598

It has a belt, but i dont know how old it is

[AbilityJohn]

i was unlucky to find a diagram of this furnace on the internet. However, i do know that this is an older Lennox. Besides the noise, you should have the heatexchanger inspected by a professional. Your gas company is normally qualified to do so but sometimes has had a good training course. You could have a routine maintenance done for a small fee. Just make sure they do visual heatexchanger inspections and that they provide a carbonmonoxide test. They will also tell you about the noise.

[TiberiusStorm]

I'm interested in getting a job in hvac but I'm wondering how hard is it to learn all this stuff?

[15ricardoyyo]

hi,my heater do not work because the burners do not light on so i turn it off but sometimes after 10 hours of being turn off i turn the thermostat on and it will go on for about half hour what can i do

[farstarfilms]

Please wht a primative system!!

[someCNGNOW]

Very good video ...

[crownvvc4]

in this video a few steps in the sequence of operations is skipped

1. a call for heat

2. inducer motor starts

3. vacuum switch proves inducer motor

4 igniter lights up/ simultaneously 24 v is sent to the gas valve and releases gas and furnace lights.

5. flame rod proves flame to the board

6. t'stat is satisfied/ blower runs as timed and cuts off.

thats all you need to know to diagnose a furnace -- your welcome

[ALPHADOG3]

lol gay vid, 120 volts? t-stat sends 24 volt signal to R and W furnaces run off 24 signals. this guy has no idea has a furnace works

[iamaGod357]

my furnace is AC ready but has no AC hooked up to it. my repair guy said i have to clean that part too. how do i do that?

[cherishmeforever14]

@jpdaddygid Thank you