Three: HVAC (heating, air conditioning, ductwork and indoor air quality), plumbing (leaks, drains, sewer lines, water heaters, water filtration and pipe replacement) and roofing (inspections, leak repair and full replacement in metal and asphalt shingle). Because one team covers all three, a problem that crosses trades — like a roof leak that has soaked the attic insulation — is handled with one call.