Cheapest Good Mechanicals | Build Show Podcast Ep 218

Zone dampers are a false economy — Matt and Jordan would skip them entirely and instead use separate pieces of equipment (mini-splits or multiple units) for each zone rather than choking a single system with dampers.

For an affordable-but-good HVAC system, right-sizing matters more than brand: a proper Manual J load calc and correctly matched equipment beats an oversized single-stage unit dumping air into rooms nobody uses.

Ductless and mini-split heads per room deliver high performance cheaply — installers were quoting roughly $1,000–$2,000 per room, so five heads can land around $10,000 total.

A single well-placed dehumidifier (Santa Fe, Aprilaire, etc.) with a fresh-air intake can handle humidity and ventilation for a whole house far more affordably than a full ERV plus separate dehumidification.

Brand reputation lags reality — Goodman is now built on the same line as Daikin (the 'Lexus' brand), so a bad experience a decade ago shouldn't rule out today's affordable equipment.

The three-bid, lowest-price HVAC selection process pressures contractors into cutting corners; a trusted relationship with one good installer produces a better-commissioned system.

On duct design, minimize metal and keep flex mainly on the return; if you use flex on supply, pre-stretch it and commission the system so long runs actually deliver their rated airflow.