Thanks for your input everyone! I will look into some 60k modulating furnaces and get some quotes! I guess I've never considered one because they are fairly new and I've heard reliability is questionable. Is the new Carrier Infinity modulating? And if so have you had good results?
You say the contractors are hesitant to go as low as you want in the furnace size. ??? I'm just guessing here, but I'm thinking none of them did a heat load calculation to qualify their hesitation. If that's the case, you haven't talked to the right contractor yet.
And I'm with the others on checking into a modulating furnace as you seem to be the customer the manufacturers had in mind when they brought that technology to market.
Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.
Any reason to go with York over Carrier Infinity? Is it more reliable or provide better comfort? I have a carrier dealer coming this week to give me a quote on a Infinity furnace with Infinity thermostat.
It's so good to see this discussion. There are so many times I try to get contractors to ask consumers if their heating system every shuts off during the coldest days of the year while still maintaining the temperature the thermostat is set for. If the answer is "yes", then that system is "grossly" oversized.
Even if a furnace cannot quite keep up on the very coldest days, it's not like you are going to freeze. Since every furnace is oversized every day the outdoor temps are not at the lowest designed temperature, it certainly doesn't make sense to have a furnace that is so oversized that it shuts off when the temperatures are at their lowest.
Still haven't replaced my 67k btu Armstrong! But my plans are to put the Armstrong in my 3 car garage and replace the furnace for the house! Still undecided to go with a 60k or 40k!! I still think 40 would be fine for my 2100 sq ft in MN but nobody wants to do it. If I post pics of current setup can u evaluate it? Help is appreciated!