Is $4,800 to upgrade furnace from 80k BTU to 100k BTU a fair price?
Project Details
It's summer in Ontario, Canada, and my home is struggling to stay cool. The thermostat is set to 23 degrees Celsius, but the AC can only get it to 25.5 degrees Celsius on a hot day. The temperature imbalance is worse on the second floor, with rooms being around 27-29 degrees Celsius, and airflow is not great. I had an HVAC technician come out who said my 80,000 BTU furnace is too small for my 2900 sq ft home and recommended a 100,000 BTU unit. He checked the 3.0T AC unit, and it's blowing cold air, so he doesn't think that's the problem. I've received a second opinion that 80,000 BTU might be okay, but others agree 100,000 BTU is better. I'm also looking into Aeroseal, as I've heard many homes have 30% duct leakage, and I'm wondering if I should explore that instead. I'm looking for advice on what to do and if there's a way to verify duct leaks before paying for sealing.
Quote Details
This quote is for upgrading the existing furnace to a higher BTU capacity. The current 80,000 BTU furnace is considered undersized for the 2900 sq ft home, which may be contributing to cooling issues and temperature imbalance, especially on the second floor. A technician suggested a 100,000 BTU furnace would be more appropriate. Other technicians have varying opinions on whether 80k BTU is sufficient or if 100k BTU is better. - Current Furnace Capacity: 80,000 BTU- Proposed Furnace Capacity: 100,000 BTU- Rationale: Current furnace is undersized for 2900 sq ft home, contributing to cooling issues and temperature imbalance.
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More Details
Category
HVAC
Price
$4,800
Quote Date
July 3, 2025
Home Size
2,900 sq ft
BTU tonnage
100,000 BTU
System type
Furnace
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