The Multi-Zone Retro-Mate converts a single-zone, constant-volume rooftop unit to a variable air volume (VAV) multi-zone.

These 3- to 5-ton units are an addition to Trane’s portfolio of Foundation™ light-commercial rooftop HVAC units. They fit a common roof curb used on many existing commercial buildings and can be installed without the need for an adapter, which saves customers time and money during installation.

These rooftop units can be configured at the factory, so consultant engineers or design-build contractors can get the exact spec unit they need delivered to the job site. With more than 35 options per tonnage size, there are more than 750,000 unit configurations available.

It’s the middle of summer and your customer, who can’t provide you with any helpful information about the history of this situation since they just recently purchased the business, is complaining that the temperature inside their small convenience store won’t get comfortable whenever the outdoor temperature gets over 90°F.