According to the 2008 American Home Comfort Study from Decision Analyst1, homeowners spend more with contractors who:
Perform Manual J Load Calculations.
Homeowners spent on average $934 or 26% more with contractors who performed a Manual J load calculation in the home and marketed this expertise
Generate a Professional Proposal in the Home.
Contractors who provide a professional written proposal average $507 or 14% more than typical replacement bids accepted
Give a Presentation on a Laptop Computer.
Homeowners spent on average $2349 or 57% more with contractors who gave a presentation on a laptop computer in the home
1. Decision Analyst American Home Comfort study included responses from 30,000 homeowners. The nationally accurate study was fielded in August and September of 2008. At the 95% probability level all examples listed above were tested and found significant