Gusto started as ZenPayroll in 2012 and grew into one of the most-used payroll platforms for small and midsize businesses in the U.S., with more than 300,000 customers. For HVAC contractors, Gusto's appeal is simple: payroll runs in under five minutes, federal/state/local taxes are calculated and filed automatically, and techs get a modern app where they can see pay stubs, W-2s, and benefits in one place. Owners who don't want to touch a compliance form ever again tend to gravitate to Gusto.
Gusto handles the payroll scenarios most residential and light-commercial HVAC shops need out of the box: hourly and salaried mixes, tips and bonuses, 1099 contractors for subbed-out work, multi-state employees, and health/dental/vision benefits administration via Gusto Marketplace. Deeper tiers add performance reviews, hiring tools, dedicated HR support, and PTO policies that match how HVAC companies actually run on-call rotations and seasonal staffing. For shops already on QuickBooks or Xero, the native sync keeps books clean without double entry.
Where Gusto is less of a fit: very large contractors with heavy certified-payroll, prevailing-wage, or union requirements. Gusto supports some of this through its Premium tier and partners, but HVAC firms running big public or commercial jobs often pair Gusto with Points North or move up to ADP/Paychex. For the typical 5-50 truck HVAC shop, though, Gusto is the path of least resistance - and it plugs into most HVAC FSMs (ServiceTitan, Housecall Pro, Jobber, FieldEdge) either directly or through middleware.