Kate

HI Bill, Yes the contractor said this 66,000BTU will be fine for my split level 1700 sq ft house. Anything else I should be asking? I wonder whether there's still any warranty left on this 2004 Lennox?

Thanks for your reassurances, Bill and Brandon. I saw the furnace demoed yesterday and looked/sounded good. He's asking $450 Cdn which I think is fair. I welcome your comments....! Then it's another $800 to install and make the connecting metal ducts fit.

Hi Bill - it's from 2004 and was taken out because the owner had a heat pump installed. My current furnace is that Lennox G8Q3 from 1963 that has the heat exchanger going and is vented up through a stack through the roof. It's still working but I want to have a replacement ready. (Yes I have a CO detector near a heat register) I'm worried that the only on-line reviews on the G60 are negative. Thanks for your thoughts on this!

I'd be grateful for your opinion on this furnace, thanks! It's for a replacement on a house that in a few years will probably be torn down...

I'll carry on with my current furnace but want to have a back-up. You know how life works - it'll be -10 in January when my furnace goes, and only high-efficiencies will be available. So my plan is to purchase a mid-efficiency used furnace with lots of life left in it and keep it in my basement until (if) it's needed. I'd be grateful for anyone's comments on the replacement model I'm looking at: LENNOX G60UH-24A-070-04 Thanks!

Thanks for all your comments. I'm in Canada where only high-efficiency furnaces are available to buy. My house will be sold and probably torn down in about three years, so yes I'm cheap where it comes to replacing the furnace. This G8Q3-90E-63 model is still working fine supplying the house with upwards forced air heating. Yes I have a CO detector on a nearby air register. And I contacted Lennox - they do not have a replacement heat exchanger for this old model. So I will replace it with a mid-efficiency furnace. Living in Vancouver, winters aren't that cold. I've been dealing with the same furnace company/person every year for service, so I don't think I'll do the pencil test. I have a line on a Lennox g60uh-24a-070-04 which I'm going to see in action next weekend. Is this a good model/year? Does the -04 mean 1984?

Hi Marc - my regular Flame Heating service fellow said he could "poke his baby finger through it if he wanted to" and also mentioned something about how the flames shouldn't be as blue as they are. Does that help?

My 1964 house has been reliably heated by this Lennox gas furnace. The heat exchanger is getting brittle and I have a CO2 detector near an air register. I'm not sure whether to try and get through another winter in Vancouver (mild usually) or try to find a heat exchanger that could be replaced. Or to get a used Lennox G60UH-24a-070-04 installed. Advice please and thanks!