Furnace from Home Depot and Costco
I am planning to change 21 years old Lennox furnace (90,000 BTU) and an old air con with a Trane. One of the contractors who installs for Home Depot in Brampton visited and quote ($5881) including all the rebates and taxes with 10 years parts and labour warranty on both units and lifetime limited warranty on the heat exchanger with registration within 60 days (the exact duration is not documented in the brochure). Also includes removal of old furnace and air con. The installation will take one day.
I have a 2500sq.ft area with a finished basement.
The guy recommended Trane model (both furnace and air con).
1. Furnace is XV95 (95% efficient), 80,000 BTU; furnace cost is $3700
2. 5-inch media filter
3. 1600 CFM motor
4. XR15 (air con) with SEER of upto 17.0, 2.5 ton; air con cost is $2800
I also had a quote from Costco (only furnace). They are selling Lennox. They only provide 10 years on furnace parts, 20 years heat exchanger with 1 year labor service. After the first year, if you want to have a labor then you have to pay $35/month to have a free labor with one service/year.
The guy recommended ML193 model (furnace model)
1. Furnace is ML193 (93% efficient), 70,000BTU; furnace cost is $3099
2. 5-inch media filter (extra $300)
The total cost $3881 (includes all the rebates and taxes plus filter cost).
In addition, I am getting $400 cash card and $82 for Executive Member. This is not included in the price mentioned above.
My worries are that:
1. Do you think this cost is good for the particulars mentioned above?
2. Is there any thing I am missing which is important?
3. My current Lennox old furnace is working well. Should I really switch to high efficiency furnace and will this make a significant impact or not?
4. The heat exchanger is 92% or 95% efficient. What is the reliability of this efficiency over the period of time (lets say 5-10 years)? Does this efficiency change with time.
I do not find any logical explanation which company/model should I use.
I would appreciate if you put some thoughts which may help other homeowners as well.