Is $6,000 to remove old insulation, air seal, and blow in new cellulose insulation in attic a fair price?
Project Details
My house was built in the 90s, is 3700 sq ft, and has significant cooling and heating costs. An energy audit showed about 3 air changes per hour, so it's reasonably tight, with no major suggestions besides sealing lighting receptacles in the attic. There's a 5-degree differential between the upstairs and main floor, and a 10-degree differential between the upstairs and basement. I have a single HVAC unit for all 3 floors, which keeps up but has uneven distribution of conditioned air. I was hoping the air sealing would reduce the stack effect. I'm trying to figure out if comfort will markedly improve with new insulation, especially regarding temperature regulation between floors. I'm not so much worried about the financial ROI on attic insulation as I am about whether I will be able to perceive improvement in temperature regulation between floors.
Quote Details
This option involves a complete attic reinsulation. - Remove existing fiberglass insulation (currently R43, compacted from 30 years). - Perform air sealing in the attic. - Blow in new cellulose insulation to achieve R50, meeting current code.
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More Details
Category
Insulation
Price
$6,000
Quote Date
August 23, 2025
Home Size
3,700 sq ft
Insulation Type
Blown In
R Value
R50
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