Understanding the Supply Chain

How the HVAC Supply Chain Works

Manufacturers produce the equipment. Major manufacturers include Carrier, Trane, Lennox, Rheem, Goodman (Daikin), and others. Most manufacturing is done overseas or in a small number of North American facilities.

Distributors purchase from manufacturers in bulk and warehouse equipment regionally. You buy from distributors, not directly from manufacturers. Your local distributor stocks equipment and parts and ships to contractors in the region.

Contractors (you) purchase from distributors and install for end customers.

The supply chain breaks when any link fails — manufacturing slowdowns, shipping container shortages, microchip shortages, extreme weather events at manufacturing facilities, or demand spikes that outpace supply.

What Affects Availability

Seasonality: Equipment demand spikes in spring (cooling season) and fall (heating season). Lead times on popular equipment can go from days to weeks at peak demand. If you're quoting a job in June and need a specific unit, check availability before quoting a delivery date.

Regulatory transitions: When refrigerant regulations change, old equipment sells out fast as contractors and distributors stock up before the changeover. New equipment takes time to ramp up. Plan for extended lead times during transition periods.

Regional distribution: Some equipment is better distributed in some regions than others. If your primary distributor is out of a specific model, a distributor in the next market may have it. Know your secondary sources.

Parts vs. equipment: Parts availability is often separate from equipment availability. A model that's widely stocked may have proprietary parts that are backordered. Always check parts availability on OEM-specific components before committing to an installation timeline.

Managing Lead Times in Your Business

Quote accurately. If you don't know the lead time, find out before you quote an installation date. A customer told "two weeks" who waits six is an angry customer.

Keep common parts stocked. Capacitors, contactors, hard-start kits, common motors — the parts you replace regularly should be in your van. Waiting a week for a $15 capacitor is a customer service failure.

Have backup suppliers. If your primary distributor is out, know who else to call. National parts distributors are alternatives when your local distributor can't help.

Communicate proactively. If a job is going to be delayed because of equipment availability, tell the customer before they call you. "We have your equipment on order and it's running about two weeks out — I'll call you as soon as it lands" is a thousand times better than letting them wonder.

The Equipment Efficiency Transition

The ongoing DOE minimum efficiency standard increases and the refrigerant transition are creating predictable supply disruptions. Old equipment that will no longer be manufactured gets depleted, new equipment ramps up slowly, and everyone's playing catch-up.

For contractors, this creates both risk and opportunity. The risk: not knowing what's available when you need it. The opportunity: distributors sometimes offer significant discounts on equipment approaching the end of an era to clear inventory. If you have the storage space and capital, buying ahead of transitions can be profitable.