Parts lead times are mostly back to normal — these compressors and boards aren't

Most HVAC parts availability has normalized — common compressors, control boards, and standard ductwork fittings are back to typical lead times at most distributors. The exception is a narrower band of specialized equipment where lead times remain stretched, and knowing which items those are matters before they stall an install.

What’s still backed up

Larger commercial rooftop units, certain variable-refrigerant-flow system components, and equipment newly redesigned around lower-GWP refrigerants continue to see longer lead times at several manufacturers — demand from the refrigerant transition and from commercial construction has absorbed manufacturing capacity that used to be available for faster turnaround. Specialty controls boards for less common equipment lines show similarly uneven availability depending on the manufacturer.

How this changes scheduling

For jobs involving any of the above, ordering equipment at contract signing — not at the point in the schedule where install would normally happen — is the difference between a unit arriving on time and a finished electrical and ductwork rough-in sitting idle waiting on the rooftop unit itself. Some shops now track the equipment order date as its own milestone in the job schedule, separate from the install date, because the gap between the two has gotten long enough on certain equipment to matter.

Setting expectations with customers

Long-lead equipment needs to be flagged at the proposal stage, not after the contract is signed — a customer who hears “ordered” assumes delivery within days, and a multi-week wait on a rooftop unit feels very different if it was disclosed up front versus discovered later. A specific delivery window sourced from the actual manufacturer or distributor quote, not a general estimate, holds up better when a customer asks why a job is stalled.

What this means for replacement timing

Customers replacing a failed system in-season don’t have the luxury of waiting on a long-lead unit, which makes maintaining a small buffer stock of the most commonly installed residential equipment worth the carrying cost for shops that do volume replacement work.

Bottom line: most parts are fine. The few that aren’t are large enough line items that getting the lead time wrong is what actually stalls a job — order them at signing, not at the point you’d normally schedule the install.