Rooftop & packaged
unit replacement
for Queens
buildings, done right

Generally, if a rooftop or packaged unit is beyond 12–15 years old, requires repeat repairs within the same season, or uses a phased-out refrigerant, replacement is usually the more economical path. We assess your unit's age, repair history, and efficiency during a site visit and give you an honest recommendation — including the numbers behind it — rather than pushing replacement by default.

Yes. Full commercial AC replacement in Queens typically requires DOB mechanical filings, and we manage that process end-to-end — preparing documentation, coordinating inspections, and securing sign-offs. Building owners and managers stay informed at each stage but don't have to chase paperwork themselves.

LL97 sets carbon emissions limits for NYC buildings over 25,000 sq ft, and aging HVAC equipment is often the single largest contributor to a building's carbon footprint. Replacing an old rooftop or packaged unit with a modern, higher-efficiency system is one of the fastest ways to reduce that exposure. Denair includes an LL97 impact assessment with every replacement project for qualifying Queens buildings.

Cost depends on unit size, tonnage, rooftop access, crane requirements, and DOB filing scope, so we don't quote a flat number without seeing the site. What we do guarantee is a clear, itemized fixed-price proposal before any work begins — what we quote is what you pay, with no hourly surprises once the job starts.

Most single-unit rooftop or packaged system replacements are completed in one to three days from crane day to startup commissioning, once permits are approved and equipment is on-site. Larger, multi-unit projects take longer and are scheduled around your building's occupancy needs to minimize disruption. We give you a realistic timeline upfront, including expected permit lead times.