01
HVAC Design & Consultancy
Heat-load calculation, system selection, drawings, BOQ and budgeting for new and retrofit projects.
Learn more
01HVAC Engineering & Contracting
Complete HVAC solutionsfor commercial buildings
Design, supply, installation and maintenance of VRF / VRV, ducted and central air-conditioning — delivered by one accountable engineering team across Bihar, U.P. and Maharashtra.
- Authorised OEM partner
- 1000+ projects delivered
- Free site survey
1000+Projects delivered
02VRF / VRV Systems
Energy-efficient VRFsystems, engineeredfor every zone
Individually controlled zones, lower running costs and quiet operation — selected, piped and commissioned by our in-house engineers.
- Authorised OEM partner
- 1000+ projects delivered
- Free site survey
5000HPLargest VRV installation — Sunteck, BKC
03Ducting & Ventilation
Precision ductworkfor quiet, balancedairflow
GI ducting, insulation, grilles, diffusers and dampers — designed to the heat load and installed to deliver even air distribution.
- Authorised OEM partner
- 1000+ projects delivered
- Free site survey
25000CFMVentilation system — The Barbeque Company
04AHU · Chillers · Piping
Central plants builtfor continuous duty
Air handling units, chillers and chilled-water piping for hospitals, campuses and industrial facilities that cannot afford downtime.
- Authorised OEM partner
- 1000+ projects delivered
- Free site survey
500HPBihta IIT College
05Annual Maintenance & Service
Planned maintenancethat protects yourHVAC investment
Preventive AMC, quick breakdown response and genuine spares — authorised service support for India’s leading AC brands.
- Authorised OEM partner
- 1000+ projects delivered
- Free site survey
11Authorised OEM brands
01 / 05
AuthorisedSale & Service Channel Partner
About S M Aircon Enterprises
A complete HVAC partner for commercial projects
S M Aircon Enterprises is an HVAC engineering and contracting company with its head office in Patna and a branch office in Mumbai. Since 2018 we have delivered air-conditioning and ventilation systems for stadiums, hospitals, hotels, banks, retail, banquet halls and corporate offices.
We take complete responsibility for every project — from site survey and heat-load design to supply of genuine equipment, installation, commissioning and annual maintenance.
- Turnkey HVAC contracting
- Heat-load study & system design
- Authorised OEM equipment
- AMC & breakdown support
Discover More
Md. MoinDirector
Our Services
Our HVAC services
End-to-end heating, ventilation and air-conditioning services for commercial, institutional and industrial buildings.
02
VRF / VRV Systems
Turnkey supply, installation and commissioning of energy-efficient VRF / VRV air-conditioning.
Learn more
03
Ducting & Insulation
GI ducting (round, oval, square) with duct, pipe and roof insulation — fabricated and installed.
Learn more
04
AHU & Central Plants
Air Handling Units and air-cooled / water-cooled central plants for large commercial facilities.
Learn more
05
Chilled Water & Copper Piping
Chilled-water, hot-water and copper refrigerant piping, laid and pressure-tested to spec.
Learn more
06
Grills, Diffusers & Dampers
Supply and installation of grills, diffusers, dampers and fire dampers across all types.
Learn more
07
Ductable & Packaged ACs
All ranges of ductable, packaged, cassette, split and window ACs plus compressors.
Learn more
08
AMC & Maintenance
Annual maintenance contracts, breakdown call-outs and servicing for every AC range.
Learn moreIndustries
Industries we serve
HVAC systems engineered for the specific needs of each sector — from round-the-clock hospitals to high-footfall retail.
Hospitals
Hotels & Banquets
Malls & Retail
Banks
Education
Railways & Industry
Restaurants & Cafes
Villas & Residences
Stadiums & Auditoriums
Theatres & Studios
Cold Storage
Gyms & Salons
0+
Projects delivered
0
Authorised AC brands
0HP
Largest single VRV installation
0+
Years of HVAC contracting experience
Landmark Projects
Featured projects
Our Story in 30 Seconds
Built for comfort. Engineered to last.
A quick look at the spaces we cool — landmark auditoriums, hospitals, banquet halls and designer interiors across Bihar, U.P. and Maharashtra.
- Stadiums, hospitals, banquets & offices
- VRF / VRV, cassette, ducting & central plants
- One team from design to AMC
~3.5 yrsTypical payback period of a VRF / VRV system
VRF / VRV Specialists
Why buildings are moving to VRF / VRV
VRF (Variable Refrigerant Flow) / VRV technology regulates refrigerant flow to match occupancy, orientation, sun direction and heat-generating equipment — cutting electricity consumption.
01
Energy Efficiency
VRF systems deliver exactly the cooling each zone needs, so they run less often and at lower capacity — and can recover heat from cooling for areas that need warmth.
02
Consistent Comfort
The compressor senses each zone’s precise requirement and meters refrigerant accordingly — steady humidity with no hot or cold spots.
03
Less Downtime
Running only when needed means less wear and fewer breakdowns. If one indoor unit has an issue, the others keep working.
04
Requires Less Space
Compact indoor units and minimal ducting free up walls and ceilings — keep those high ceilings intact.
05
Quiet Operation
The noisier condensing unit sits outside; indoor air handlers are smaller and quieter than traditional split systems.
How We Work
How we deliver every project
1
Site Survey
Site visit, measurements and requirement study.
2
Heat-Load & Design
Heat-load calculation, system selection and drawings.
3
BOQ & Proposal
Itemised BOQ with clear, transparent pricing.
4
Installation
Piping, ducting, electrical and controls by our own team.
5
Testing & Commissioning
Pressure testing, balancing and performance check.
6
AMC & Support
Preventive maintenance and quick breakdown service.
Our Work
Gallery
A selection of completed installations — designer ceilings, auditoriums, offices and hospitality spaces.
AC Size Calculator
How many tons does your room need?
Buying an AC that’s too small means it runs all day and never quite cools. Too big, and you pay extra for power you don’t need. Pop in your room size and we’ll give you a quick estimate.
- Based on roughly 1 ton per 120 sq ft, adjusted for sun, people and ceiling height
- Free site visit for an exact heat-load calculation
Our Products
Products for every space
Residential & OfficeSplit ACsHi-Wall Split AC
Quiet, efficient wall-mounted split units for rooms, cabins and small offices.
- Inverter & fixed-speed options
- Multiple tonnage options
- Easy to operate & maintain
Homes & ClinicsSplit ACsMulti-Split System
One outdoor unit serving several indoor units — saves outdoor space.
- Several rooms, one outdoor
- Individual room control
- Neat exterior
All SizesWindow ACsWindow AC
All kinds of window ACs in all sizes — simple, robust and budget-friendly.
- Single-unit design
- Quick installation
- Low upfront cost
Retail & RestaurantsCassette & DuctableCeiling Cassette AC
Ceiling-mounted units throwing air in multiple directions for even cooling.
- 4-way / round-flow air throw
- Flush with false ceiling
- Ideal for open areas
Banquets & ShowroomsCassette & DuctableDuctable Split AC
Concealed units with ducting for large halls needing heavy-duty continuous cooling.
- Hidden above false ceiling
- Grills & diffusers only visible
- High static options
Commercial BuildingsVRF / VRVVRF / VRV Outdoor System
Variable refrigerant flow systems serving many indoor units from modular outdoor units.
- Zone-wise control
- High energy efficiency
- Scalable modular design
All Indoor TypesVRF / VRVVRF Indoor Units
Wall, cassette, ductable and floor types connected to one VRF / VRV system.
- Mix indoor types freely
- Quiet operation
- Central controllers
Halls & FactoriesPackage UnitsFloor-Mounted Package Unit
Compact, stylish and quiet floor-standing units — some even portable.
- Self-contained design
- Fast installation
- Suited to large spaces
CommercialPackage UnitsRooftop Package Unit
Outdoor packaged units with ducted supply for commercial buildings.
- Saves indoor space
- Ducted air supply
- Weather-proof
Central PlantsChillers & AHUAir / Water-Cooled Chillers
Centralised chillers for large commercial and industrial facilities.
- Air-cooled or water-cooled
- Economical at scale
- Long service life
Why Choose Us
Why clients choose S M Aircon
Commercial HVAC needs correct design, genuine equipment and dependable service. These are the commitments behind every project we deliver.
Single-point turnkey responsibility
Design, supply, installation, testing and commissioning under one contract — one team accountable from drawing to handover.
Engineering-led system design
Every quotation starts with a site survey and heat-load calculation, so the system is sized correctly — not oversized or under-performing.
Authorised OEM partner
Genuine equipment from Daikin, Carrier, Toshiba, Samsung and other leading brands, with full manufacturer warranty and technical backup.
Trained engineers & technicians
Experienced site engineers and skilled technicians for refrigerant piping, ducting, electricals and controls — no sub-standard shortcuts.
On-time, on-budget execution
Clear BOQs, transparent pricing and disciplined site planning keep projects on schedule from mobilisation to commissioning.
Responsive after-sales support
Preventive AMC, breakdown call-outs and spares support from our Patna and Mumbai offices — long after the project is handed over.
“We are proud to be among the leading engineering firms in Patna & Mumbai. We believe in finding the best people, developing their skills and careers, and renewing our pledge to excellence with every project.”
Md. MoinDirector, S M Aircon Enterprises
Certificates & Authorisations
Certifications & authorisations
OEM authorisations and registrations that back every installation we deliver.
