Mastermind Heating & Air has earned a perfect 5.0-star rating across 190 reviews in Las Vegas — a notable achievement for a company that also handles plumbing and water heater work beyond standard HVAC. The family-owned and operated business has positioned itself around a simple promise: every installation, repair, and maintenance job done right the first time.

The company's service range is broader than the name suggests. On the HVAC side, Mastermind handles AC installation and replacement, AC repair, AC maintenance, ductless mini-split systems, heating installation and repair, furnace maintenance, HVAC replacement, and whole-home air purifiers. Beyond HVAC, the company also handles plumbing work including kitchen and bathroom faucet repair, valve replacement, and tankless water heater installation — an unusual but appreciated combination for homeowners who want one trusted contractor for multiple systems.

Technicians James and Grant are named in reviews for quality service on specific jobs — James for motor replacement and heater repair, Grant for tankless water heater installation. Both are described as clear communicators who explain what they're doing and why, and who complete work quickly without cutting corners. A review praising Grant for the "fast and right priced" tankless water heater install and another noting James handled both an HVAC motor issue and plumbing valve repairs on the same visit reflect the company's multi-trade capability.

Mastermind's "free diagnostic with any repair" positioning helps lower the barrier for customers comparing quotes. Their 1+ years serving Las Vegas alongside a perfect rating suggests a relatively newer company that's built quality customer experience from the start.