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About Duff's Mechanical, LLC
Duff's Mechanical LLC maintains a 5-star average across 26 verified reviews in Columbus, Ohio. The family-owned contractor sends technicians to homes throughout the Columbus metro area. Reviewers consistently describe interactions with Mike and his son, noting their thorough approach to diagnostics and honest pricing discussions.
This contractor distinguishes itself through flexible scheduling and transparent pricing. One reviewer noted the team worked past 9pm on a weekend to complete a mini-split installation. Multiple customers mention same-day response during extreme weather events, including a subzero winter night furnace failure. The company does not charge for initial inspections when no repair is needed, and they waive labor fees when replacement parts are defective.
Customers share specific scenarios that illustrate the company's approach. One homeowner recounted being quoted unaffordable prices by competitors before Mike installed a Mitsubishi mini-split at a reasonable cost. Another described Mike returning twice to install a replacement thermostat after the first unit proved defective, without additional charges. A third reviewer praised the team's thorough diagnosis and parts sourcing during an emergency call. Each scenario reflects the service-first philosophy reviewers repeatedly mention.
What Customers Say
All 26 reviews award 5 stars, with customers specifically praising Mike and his son for same-day response, fair pricing, and thorough diagnostics. Five reviewers mention emergency situations resolved within the same day.
Services
Mini-Split Installation
Mitsubishi mini-split systems installed for whole-home or zone-specific heating and cooling.
Furnace Repair
Emergency furnace diagnostics, parts sourcing, and same-day repair for all major brands.
Heat Pump Service
Inspection, cleaning, and maintenance for residential heat pump systems.
Thermostat Installation
Installation of homeowner-purchased thermostats, with warranty support for defective units.
System Diagnostics
Thorough system evaluation with transparent explanation of repair options and pricing.