lennox furnace model G12D2E-82-8 issues - PeachParts Mercedes-Benz Forum

pawoSD · #1 02-07-2014, 08:40 AM

Wow, you'd recoup the cost of a new high efficiency furnace in no time vs. that ancient thing. Its probably barely 60% efficient if its a normal draft-furnace. You're sending 40%+ of your bill out the exhaust every month.

I have a 72,000 btu rated 92% efficiency furnace and it heats approx. 2,800sq feet even in the -5 to -10F temps we've been having no problem....I'd say when its 5F out it runs about 25 mins of every hour over 2-3 cycles. Modern furnaces are MUCH better than ones that old. Don't fix it, dump it!

125,000btu would be WAY overkill. Or at least it should be....how big is the house? Usually a furnace that size would be in a house well over 3,000sq ft!

dynalow · #2 02-07-2014, 08:55 AM

Quote:

Originally Posted by pawoSD

Wow, you'd recoup the cost of a new high efficiency furnace in no time vs. that ancient thing. Its probably barely 60% efficient if its a normal draft-furnace. You're sending 40%+ of your bill out the exhaust every month.

I have a 72,000 btu rated 92% efficiency furnace and it heats approx. 2,800sq feet even in the -5 to -10F temps we've been having no problem....I'd say when its 5F out it runs about 25 mins of every hour over 2-3 cycles. Modern furnaces are MUCH better than ones that old. Don't fix it, dump it!125,000btu would be WAY overkill. Or at least it should be....how big is the house? Usually a furnace that size would be in a house well over 3,000sq ft!

Don't fix it, dump it!

x2 .....unless you have plans to get out of DEEtroit sometime soon

dynalow · #3 02-07-2014, 08:56 AM

Quote:

Originally Posted by pawoSD

Wow, you'd recoup the cost of a new high efficiency furnace in no time vs. that ancient thing. Its probably barely 60% efficient if its a normal draft-furnace. You're sending 40%+ of your bill out the exhaust every month.

I have a 72,000 btu rated 92% efficiency furnace and it heats approx. 2,800sq feet even in the -5 to -10F temps we've been having no problem....I'd say when its 5F out it runs about 25 mins of every hour over 2-3 cycles. Modern furnaces are MUCH better than ones that old. Don't fix it, dump it!
125,000btu would be WAY overkill. Or at least it should be....how big is the house? Usually a furnace that size would be in a house well over 3,000sq ft!

Don't fix it, dump it!

x2 .....unless you have plans to get out of DEEtroit sometime soon

whunter · #4 02-07-2014, 12:17 PM

Quote:

Originally Posted by pawoSD

Wow, you'd recoup the cost of a new high efficiency furnace in no time vs. that ancient thing. Its probably barely 60% efficient if its a normal draft-furnace. You're sending 40%+ of your bill out the exhaust every month.

I have a 72,000 btu rated 92% efficiency furnace and it heats approx. 2,800sq feet even in the -5 to -10F temps we've been having no problem....I'd say when its 5F out it runs about 25 mins of every hour over 2-3 cycles. Modern furnaces are MUCH better than ones that old. Don't fix it, dump it!

125,000btu would be WAY overkill. Or at least it should be....how big is the house? Usually a furnace that size would be in a house well over 3,000sq ft!

I have been looking for several years.

* This is an up-flow furnace.
* There are several high efficiency furnaces that will fit the seriously limited space.
* Most of the 1939 vintage ducting and the hood which are structurally built into the ceiling / walls should be replaced, because they have been inspected and refused by multiple cleaning companies.
* The attic has been over insulated = add several extra days to move and re-install the insulation.

.