This page covers eight events across North America, Europe, and Asia, chosen because they represent where actual buying decisions, code discussions, and contractor relationships move forward. The IEA Heat Pump Conference in Vienna runs May 26 through 29 and draws a technically focused crowd from government agencies and manufacturers. IAQVEC in Los Angeles, running May 18 through 22, is one of the more research-heavy indoor air quality gatherings on the calendar. If you're timing outreach around the ASHRAE Winter Conference 2026 audience or looking for adjacent events in the same seasonal window, several of these draw overlapping attendance. The range here means whether your focus is policy, product, or project pipeline, at least two or three events will match where your team actually needs to be.
The basics
- Total HVAC conferences: 8
- Largest city by count: Washington (1)
- Tier mix: 0 Tier A / 4 Tier B / 3 Tier C / 1 Tier D
- Price mix: 4 $ / 1 $$ / 1 $$$
- Date range: May 05, 2026 to May 29, 2026
Breakdowns
The two tables below show the supporting distribution for this cut.
States by HVAC conference count in May 2026
| State | Conferences |
|---|
| District of Columbia | 1 |
| Washington | 1 |
| Florida | 1 |
| Connecticut | 1 |
| California | 1 |
HVAC conferences in May 2026 by tier
| Tier | Conferences |
|---|
| Tier B | 4 |
| Tier C | 3 |
| Tier D | 1 |
Takeaways
Of the 8 HVAC conferences scheduled in May 2026, 0 hold a Tier A rating.
Washington hosts the most events in this cut, with 1 on the calendar.
May is the busiest month, with 8 conferences scheduled.
Ticket pricing splits 4 at the $ tier and 1 at the $$$ tier, so entry costs vary widely across the set.
Build4Asia tops the Tier-ranked list, held in Hong Kong.
The most common stated purpose is Growth / Revenue, covering 4 of the 8 events in this cut.
Event length averages 3.2 days across the set, with the longest running 5 days.
