VRF system design
& installation
in NYC
multi-zone experts
Multi-zone climate engineered for NYC's most demanding spaces — offices, medical facilities, restaurants, luxury residences, and mixed-use buildings. One outdoor unit, up to 64 indoor zones, five boroughs.
New York City's Top Businesses
& Property Owners
Traditional HVAC can't handle
modern building demands
Multiple tenants, mixed-use floors, server rooms and spa offices — conventional systems were never designed for this. VRF/VRV was.
Every floor demands a different temperature
Conference rooms, server closets, open offices, and corner suites all have different thermal loads — conventional systems can't address them independently.
No space for bulky ductwork or mechanical rooms
Most NYC commercial buildings weren't designed for central duct systems. VRF's slim copper refrigerant piping routes through spaces ductwork can't reach.
Energy costs are out of control
Older HVAC systems run at full capacity even when only one zone needs conditioning. VRF modulates compressor speed to match real-time building demand.
Heating AND cooling — at the same time
South-facing suites need cooling in winter while north-facing offices need heat. Heat-recovery VRF handles simultaneous demands from a single outdoor unit.
"Our 14-story mixed-use building ran on an aging chiller that couldn't keep up. Denair replaced it with a Daikin VRV system — simultaneous heating and cooling across every floor, and our LL97 exposure dropped to near zero."
Engineered for every challenge
From a single office floor to a 40-story high-rise — we design, engineer, and install VRF systems that fit your building like a glove.
Commercial VRF Installation
Office, Medical, Retail & Hospitality
Complete design-build for any commercial application. We design MEP systems, manage DOB permits, handle VRF-specific electrical coordination, and commission systems with manufacturer-certified tools.
VRF Service & Maintenance
Factory-certified service for Mitsubishi Electric, Daikin, and LG VRF systems — 24/7 emergency response across all five boroughs.
VRF Retrofit & Conversion
Convert existing chiller, boiler, or rooftop systems to modern VRF. Works in occupied buildings with minimal construction.
Factory-certified to install the world's
best VRF systems
Authorized and factory-trained by the world's leading VRF manufacturers. This means access to proprietary diagnostic software, genuine parts, extended warranty programs, and the engineering support your install deserves.
VRF installations across the five boroughs
Why NYC facility managers choose Denair
for VRF
Complete projects. Flawless execution. Real numbers.
Buildings switching from central air to VRF heat pumps with Denair automation controls typically see 25–35% reductions in annual HVAC energy spend — a key metric for LL97 compliance.
Every qualifying VRF heat pump installation is eligible for Con Edison Clean Heat rebates. A 20-ton system can generate $25,000–$30,000 in utility rebates. Denair manages the full application.
Denair files DOB permits, coordinates PE engineering, and handles TR1 special inspections concurrently with procurement — keeping your installation on schedule from day one.
From blueprint to perfect climate
One partner handles every step. Here's how we do it.
Site survey & load calculation
We assess your building envelope, occupancy patterns, existing mechanical infrastructure, and local utility rates to size the VRF system precisely.
System design & engineering
Our licensed engineers produce a full set of MEP drawings, refrigerant piping schematics, and electrical one-lines — stamped and ready for DOB filing.
Installation & commissioning
Factory-certified installation crews execute the design. Commissioning is completed with manufacturer-specific tools and a written startup report.
Training & ongoing support
We train your facilities team on system operation and controls, then transition to a preventative maintenance plan to protect your investment.
VRF installations across
New York City
Each project below was designed, permitted, and commissioned by Denair — licensed NYC contractors with direct OEM certification for every brand we install.
Mitsubishi Electric14-story tower retrofit: aging chiller replaced with Mitsubishi City Multi
A 1980s-vintage centrifugal chiller serving 14 floors — inefficient, non-compliant with LL97 Tier 1 targets, and incapable of simultaneous heating and cooling.
Full City Multi VRF retrofit with 22 outdoor condensing units across two rooftop mechanical rooms, 186 indoor fan-coil units, and a BACnet-integrated BMS tie-in for floor-by-floor scheduling.
31% reduction in annual energy spend. LL97 compliance through 2030 cap cycle. Con Edison Clean Heat rebate of $41,200 applied at project close.
Daikin VRV6-story mixed-use conversion from central hydronic to Daikin VRV
Aging two-pipe hydronic system with no simultaneous heating/cooling, poor tenant comfort control, and a looming LL97 Section 28 deadline.
Daikin VRV 5 heat-recovery system across 48 residential units and 4 ground-floor retail spaces. Refrigerant piping routed through existing shaft spaces — no new penetrations through occupied floors.
Individual tenant metering unlocked. DOB mechanical permit filed and closed in 9 weeks. $28,600 Con Edison Clean Heat rebate plus NYSERDA FlexTech study credit.
LG Multi V78-key hotel: LG Multi V 5 installed across 5 floors with zero guest disruption
Existing PTAC units failing in 40% of guest rooms. Ownership needed a full replacement during peak occupancy — phased floor-by-floor without displacing revenue.
LG Multi V 5 heat-recovery VRF, phased by floor over 11 weeks. Each floor was completed in a 4-day window; guest rooms offline no more than one night per room.
All 78 rooms re-commissioned on schedule. Guest comfort complaints dropped to zero within 30 days of final commissioning. Annual utility savings estimated at $36,000.
What facility managers say
about working with Denair
Denair replaced our aging rooftop units with a Mitsubishi City Multi system across all 14 floors. DOB permits, Con Edison rebate paperwork, commissioning — they handled everything. We were LL97-compliant before the first fine cycle.
We converted a six-story mixed-use from a central chiller to Daikin VRV. The system has been running flawlessly for two years. Con Edison rebates offset $28,000 of our project cost.
When the system went down at 2 a.m., Denair had a technician on-site within the hour. After three years, I've never had to explain our setup twice. That kind of continuity is rare in this city.
Questions we hear every day
Engineer-level answers about VRF/VRV systems — no marketing fluff.
What makes VRF different from conventional HVAC systems?
VRF (Variable Refrigerant Flow) systems use refrigerant — not chilled water or ductwork — as the heat-transfer medium. A single outdoor unit modulates compressor speed to serve multiple indoor units simultaneously at different temperatures. This enables simultaneous heating and cooling from one system, a capability conventional split systems and central air handlers can't match.
What does VRF stand for in HVAC, and is VRV the same thing?
VRF stands for Variable Refrigerant Flow. VRV (Variable Refrigerant Volume) is a trademarked term used by Daikin for the same technology — they invented the category in 1982. All VRV systems are VRF systems; the term VRF is the generic industry-wide designation.
How many indoor zones can one VRF system support in a typical NYC commercial building?
A single VRF outdoor unit can serve 5–64 indoor zones depending on the platform and capacity. For larger buildings, multiple outdoor units are linked in modular arrays. Denair sizes each system from a detailed load calculation — never from rule-of-thumb estimates.
Do I need a DOB permit for VRF system installation in New York City?
Yes. VRF installation in NYC requires a DOB mechanical permit filed by a licensed Professional Engineer under NYC Building Code §28-116. Denair coordinates PE filing, TR1 special inspections, and final DOB sign-off as part of every commercial installation. Permit issuance typically takes 2–4 weeks.
What refrigerant do modern VRF systems use, and are there NYC rules about refrigerant handling?
Current-generation VRF systems use R-454B or R-32 — both A2L refrigerants with significantly lower global warming potential than the R-410A they replace. The EPA AIM Act prohibited new R-410A equipment as of January 1, 2025. NYC Local Law 97 also incentivizes electrification systems that eliminate combustion, which includes VRF heat pumps. Denair installs only current-generation refrigerant platforms.
Ready for true
zone control?
Get a free VRF design consultation. We review your building's load profile, assess Con Edison rebate eligibility, and recommend the right platform — at no cost or obligation.