Deep Dives/Defence HVAC & Refrigeration/Shree Refrigerations Limited
Deep Dive

India's only naval HVAC company with all 3 defence registrations — now entering data centre cooling

₹99 Cr revenue, ₹327 Cr order book (3.3x revenue), 27% EBITDA margins — from Scorpene submarine ACs to magnetic bearing chillers for P17A warships.

K

KnowYourSME Research

May 2026 · 8 min read

₹99 Cr
Revenue FY25
₹327 Cr
Order Book
27.3%
EBITDA Margin FY25
₹5.04
EPS FY25

1Executive Summary & Investment Thesis

Shree Refrigerations is India's only naval HVAC manufacturer holding all 3 professional directorate registrations from the Indian Navy. Founded in 1990 with ₹10,000, the company evolved from industrial refrigeration into a defence-critical supplier, indigenously developing submarine ACs (P17 Scorpene) and magnetic bearing chillers (P17A warships) without foreign collaboration. With a ₹327 Cr order book (3.3x FY25 revenue), 40% revenue CAGR (FY23-25), and a new data centre cooling partnership with Smardt, the company sits at the intersection of India's naval expansion (160-200 ships by 2035), merchant marine boom (200+ ships in 3-5 years), and the doubling of India's data centre market. H1 FY26 saw temporary margin compression (EBITDA 11.2% vs 27.3% FY25) — the key monitorable is H2 margin recovery.
7.5/10

Strong Buy with Margin Watchlist

Unassailable regulatory moat in naval HVAC with massive order book and multi-decade demand runway. Data centre pivot adds significant optionality. However, H1 FY26 margin compression and working capital intensity are near-term concerns. Thesis depends on H2 FY26 margin recovery towards 20%+ and sustained order inflow.

Bull Case

  • +Only Indian company with all 3 naval HVAC registrations — regulatory moat virtually impossible to replicate. 4 major players, SRL holds 50%+ market share
  • +₹327 Cr order book at 3.3x revenue provides 2-3 year visibility. H1 FY26 alone added ₹162 Cr in new orders (1.6x full FY25 revenue)
  • +Indian Navy targeting 160-ship navy by 2030 and 175-200 ships by 2035 — Defence Acquisition Council approved 10 AOLs with ₹1.52 lakh Cr pipeline
  • +Data centre cooling via Smardt partnership unlocks $600M→$1B+ market — leveraging existing oil-free magnetic bearing compressor expertise
  • +Green transition: 300 auxiliary vessels need R22 conversion — retrofit already 32% of FY26 revenue
  • +Peak revenue capacity ₹550-600 Cr with 100,000 sq ft. No additional capital needed. No dilution until ₹500 Cr revenue

Bear Case

  • −H1 FY26 EBITDA crashed to 11.2% from 27.3% — recovery to 20%+ by FY26 full year is unproven
  • −Negative OCF of ₹24.9 Cr in FY25 — ₹31.6 Cr receivables and ₹15.2 Cr inventory build-up. Structurally working capital intensive
  • −Near 100% revenue from naval defence — budget delays or policy shifts could severely impact business
  • −Data centre revenue at enquiry stage only — zero confirmed Smardt orders. Revenue after 1-1.5 year execution cycle
  • −Gross margins declined 45%→41% on product mix. Fixed price contracts mean no margin protection from input cost rises

2Business & Management Architecture

The Journey

Shree Refrigerations (CIN: L29191PN2006PLC128377) was founded in 1990 by Ravalnath Gopinath Shende with just ₹10,000, starting as a partnership firm manufacturing domestic and heavy chillers from rented premises in Karad, Maharashtra. The company's journey through industrial refrigeration — milk cooling, newspaper printing chillers, spray damping systems — led to a pivotal moment in 2012 when it entered marine HVAC. After a challenging 4-5 year proving period, Shree Ref delivered its first major warship AC system for INS Dhruv in 2016. The watershed came in 2017 when the company indigenously developed air conditioners for the P17 Scorpene Submarines — completely in India, without any foreign collaboration. In 2018, Shree Ref won the tender for magnetic bearing chillers for P17A warships, beating multinational competitors through a technology demonstration. The company subsequently won contracts for Shallow Water Corvettes, Fleet Support Ships (all 3 contracts at Hindustan Shipyard, Vizag), and established itself as the market leader in naval HVAC within just 7 years of entering the segment. In 2024, the company converted from Private to Public Limited, and in 2025 listed on the BSE SME platform through an IPO of 93.86 lakh shares. Today, with 320+ employees, two manufacturing facilities, and a new 50,000 sq ft greenfield facility under construction, Shree Ref has evolved from a ₹10,000 startup to a ₹100 Cr revenue defence-critical manufacturer. The latest strategic move: a partnership with Smardt to provide data centre cooling solutions in India.

Revenue Segments

58%

HVAC Systems (Turnkey)

Largest segment — complete heating, ventilation, and air conditioning solutions for naval warships and submarines. Includes design, manufacture, supply, install, and commissioning. Order book: ₹190.8 Cr.

18%

AC Plants

Air conditioning plants for naval vessels. ₹58.3 Cr in order book. Self-contained and marinised split ACs designed for harsh maritime environments.

9%

Refrigeration Plants

Marine refrigeration systems (0.5 TR to 10 TR). ₹29.3 Cr in order book. Used for food storage and ammunition cooling on warships.

12%

Spares & Services

Spare parts replenished every 3-5 years for on-board vessel storage and base depot inventory. ₹29 Cr in order book. Recurring revenue stream.

3%

Chillers & Control Panels

Chilled water plants (5-300 TR) with oil-free magnetic bearing compressor technology. Defence-grade electrical control panels. Data centre cooling entry point via Smardt.

Key Management

R

Ravalnath Gopinath Shende · Chairman & Managing Director

DIN: 02028020. Founder, started the company in 1990 with ₹10,000. Production Engineering from VJTI, University of Bombay (1983). GS Parkhe Award for innovation.

C

CMDE. Sunil Kaushik NM, VSM (Retd.) · Whole Time Director

B.Tech Mechanical Engineering from JNU, M.Sc Defence & Strategic Studies. 35+ years in Indian Navy. Two awards: Nau Sena Medal (NM) and Vishisht Seva Medal (VSM).

A

Abhijit Saoji · Chief Executive Officer

Leads business development, client relationships, and strategic execution. Key spokesperson on investor calls.

C

Col. Lalit Rai VrC (Retd.) · Independent Director

Former Indian Army officer, 29 years of service. Commanded 1st Battalion 11 Gorkha Rifles during Kargil War. Awarded Vir Chakra for bravery.

Promoter

~79%

Public

~21%

Management flags: Strong founder-led company with 35+ years domain expertise. Retired Navy Commodore and Kargil War Vir Chakra awardee on board — rare caliber for an SME. CEO Abhijit Saoji is articulate with clear strategic vision. However, typical SME governance: founder Ravalnath Shende is the heart of all naval relationships and technical credibility. No apparent succession plan communicated publicly.

3Industry & Market Dynamics

Industry Overview

India's naval HVAC market sits at the confluence of three mega-trends: (1) Indian Navy expansion — current fleet growing to 160 ships by 2030 and 175-200 by 2035, each warship needing HVAC worth 0.5-0.8% of total ship value; (2) Merchant marine boom — 200+ ships in 3-5 years; (3) Green transition — 300 auxiliary vessels need R22 conversion. Defence Acquisition Council approved 10 AOLs with ₹1.52 lakh Cr pipeline. Data centre cooling market expected to double from $600M to $1B+ in 3-5 years.

Competitive Landscape

4 major players in naval HVAC, Shree Ref holds 50%+ market share. Only company with all 3 naval registrations — obtaining even one takes 4-5 years. Customers are shipbuilders (Mazagon Dock, Cochin Shipyard, GRSE, L&T, Hindustan Shipyard). HVAC = 0.5-0.8% of ship value, making it unattractive for MNCs to invest in registration process. Trezor subsidiary handles data centre ops via commission + service model for Smardt.

Peer Context

No direct listed peer in naval HVAC manufacturing. Only Indian company with all 3 naval HVAC registrations — this regulatory moat is essentially non-replicable. In commercial HVAC, Blue Star and Voltas operate but don't serve naval applications. Shipbuilders like Mazagon Dock and Cochin Shipyard are customers, not competitors. For data centres, competition is global (Carrier, Daikin), but Smardt partnership and naval oil-free compressor expertise provide differentiated entry.

4IPO & Capital Structure

IPO Details

Issue Size

93.86 lakh shares (Fresh 75.61L + OFS 18.25L)

Price Band

₹2 face value per share

Platform

BSE SME

Listing Date

July 25-29, 2025

Subscription

As per BSE records

Objects of Issue

1.Working capital requirements for defence manufacturing

2.General corporate purposes

3.Strengthening balance sheet for larger contract eligibility

Capital Structure

Pre-IPO: 2,80,69,409 shares. Post-IPO: 3,56,30,409 shares at ₹2 face value. OFS by Maharashtra Defence & Aerospace Venture Fund (IDBI). BRLM: Narnolia Financial Services. Shareholders equity grew from ₹64.7 Cr (FY24) to ₹200 Cr (H1 FY26). No dilution planned until ₹500 Cr revenue. Maharashtra capital subsidy.

IPO Promise Tracker

Has management delivered on IPO promises?

Not Started

Working capital strengthening

Equity grew from ₹64.7 Cr to ₹200 Cr post-IPO.

Not Started

Revenue growth 40-50% CAGR

FY23→FY25 CAGR 40%. FY26 target ₹140-150 Cr (42-52% growth).

Not Started

No dilution until ₹500 Cr revenue

No further equity raise announced. Infrastructure handles up to ₹550-600 Cr.

Not Started

New facility commissioning

50,000 sq ft Phase 1 operational from FY27 start.

Not Started

Data centre cooling via Smardt

Partnership announced. Trezor subsidiary set up. No confirmed orders yet.

5Operational Performance & Growth

Operations & Capacity

Two manufacturing facilities in Karad, Maharashtra (180 km from Pune towards Bangalore): 1. Manufacturing Unit – Owned (~20,000 sq ft): Core manufacturing including CNC fabrication, custom heat exchanger production, Navy-approved electrical control panels, and advanced testing. 2. Manufacturing Unit – Leased (~17,000 sq ft): Supporting operational activities. 3. New Greenfield Facility (~50,000 sq ft): Under construction, with potential for further expansion. Unique In-house Test Facilities: Chiller Performance Test Bed, Controlled Ambient AC Test Room (only such facility in India), Chiller Tilt Test Facility — all testing equipment designed and manufactured in-house. 21 design engineers. Completely backward and forward integrated manufacturing. Strategic presence across India: Karad (HQ & Factory), Pune (BD & Sales), Mumbai, Goa, Vizag, Kolkata, Chennai (Installation & Service teams). Certifications: DGQA (Warship), Directorate of Electrical Engineering (Navy), IHQ MoD Navy for HVAC, ISO 9001:2015, ZED Gold, IRS, CE. Subsidiary: Trezor (for data centre cooling via Smardt).

Order Book & Pipeline

Closing order book as of Sep 30, 2025: ₹327 Cr — 3.3x FY25 revenue, providing 2-3 year execution visibility. Breakdown: HVAC ₹190.8 Cr (58%), AC Plants ₹58.3 Cr (18%), Refrigeration ₹29.3 Cr (9%), Spares ₹29.0 Cr (9%), Turnkey ₹15.9 Cr (5%), Chillers ₹2.9 Cr, Others ₹1.3 Cr. Key pipeline: Defence Acquisition Council approved 10 AOLs, RFPs for only 3 issued so far. Remaining RFPs expected for ~₹1.52 lakh Cr in naval orders. Indian Navy targeting 160-ship navy by 2030, 175-200 by 2035. New vectors (not in order book yet): merchant marine (200+ ships in 3-5 years), non-defence marine, data centre cooling (enquiry stage only).

Key Milestones

1990

Founded by Ravalnath Shende with ₹10,000 — domestic and heavy chillers

2006

Became a Private Limited Company

2012

Entered marine HVAC — received first ISO certification for naval work

2017

Indigenously developed ACs for P17 Scorpene Submarines — no foreign collaboration

2018

Won tender for magnetic bearing chillers for P17A warships — beat MNCs

2023

First turnkey HVAC order. Won Fleet Support Ships contracts at Hindustan Shipyard

2024

Converted to Public Limited Company. Received Udyam Kaustubh Award

2025-07

Listed on BSE SME Platform. IPO of 93.86 lakh equity shares

2025-11

Order book at ₹327 Cr. Smardt partnership announced. Team expanded to 323

2026-03

Danfoss Turbocor Authorized Service Partner — first and only such center in the region

2026-03

Indian Navy B Class Ship Spares order — ₹2.41 Cr. Delivery by March 2027

2026-04

NGMV Cochin Shipyard order — ₹4.83 Cr for 8 kW Refrigeration Plant. Delivery by Feb 2030

FY26

Targeting ₹140-150 Cr revenue. New 50,000 sq ft greenfield facility first phase

FY27-28

Data centre and merchant marine revenue. 40-50% CAGR continues

Management Commentary

“We are the only Indian HVAC manufacturing company qualified by three professional directorates of Indian Navy... all three registrations together enable us to provide a totally in control end-to-end solution.”

Regulatory moat — only company with all 3 naval HVAC registrations in India.

H1 FY26 Concall, Nov 2025

“Opening order book ₹215 Cr, added ₹162 Cr new orders, executed ₹50 Cr. Closing order book ₹327 Cr — to be executed over 2-3 years.”

Order book at 3.3x revenue. New orders in 6 months exceeded full FY25 revenue.

H1 FY26 Concall, Nov 2025

“We are expecting to grow in about 40% to 50% CAGR because of the kind of opportunities that are there.”

Growth guidance driven by navy expansion, merchant marine, and data centre cooling.

H1 FY26 Concall, Nov 2025

“We have entered into an agreement with Smardt... providing data centre cooling solutions. The market is expected to almost double from $600M to $1B.”

Smardt already approved by NTT, AWS. Leveraging naval oil-free compressor expertise.

H1 FY26 Concall, Nov 2025

“Revenue in the second half will be much higher. Fixed overheads will not increase at the same ratio. This leveraging will contribute to the bottom line.”

H1 margin compression is temporary — H2 should see operating leverage.

H1 FY26 Concall, Nov 2025

6Financial Health Deep-Dive

P&L Snapshot

MetricFY23FY24FY25H1 FY26
Revenue₹50.6 Cr₹80.3 Cr₹98.7 Cr₹50.4 Cr
EBITDA₹11.9 Cr₹24.2 Cr₹27.0 Cr₹5.7 Cr
EBITDA Margin23.5%30.1%27.3%11.2%
PAT₹3.4 Cr₹11.0 Cr₹13.0 Cr₹1.5 Cr
PAT Margin6.7%13.7%13.2%2.9%
EPS₹1.70₹5.31₹5.04₹0.48
Order Book--₹215 Cr₹327 Cr

Financial Commentary

Revenue grew at 40% CAGR from FY23→FY25 (₹50.6 Cr to ₹98.7 Cr), with EBITDA growing at 50% CAGR. PAT grew nearly 5x from ₹3.4 Cr to ₹13.0 Cr. H1 FY26 saw margin compression — EBITDA dropped to 11.2% due to onsite execution costs, strategic team expansion (247→323), and front-loaded employee costs. Gross margins declined 45%→41% on product mix. Management guides long-term EBITDA of 20-22% and PAT margins of 13-15%. Full-year FY26 target: ₹140-150 Cr revenue. No dilution expected until ₹500 Cr revenue threshold.
💰

Cash Flow vs PAT

FY25: PAT ₹13.0 Cr vs OCF negative ₹24.9 Cr — ₹37.9 Cr gap driven by ₹31.6 Cr receivables growth and ₹15.2 Cr inventory build-up. Structurally characteristic of defence manufacturing with multi-stage naval inspections extending production-to-payment cycle. IPO capital (equity to ₹200 Cr) provides balance sheet strength to absorb working capital intensity.

⚠️

Balance Sheet Flags

FY25 (Lakhs): Total Assets ₹18,559 | Equity ₹11,474 (Capital ₹561 + Reserves ₹10,913) | LT Borrowings ₹636 | ST Borrowings ₹3,337 | Trade Receivables ₹9,520 (51% of assets — elevated) | Inventories ₹4,740 | Cash ₹594 | PPE ₹1,324. Post-IPO equity expanded to ₹200 Cr. Receivables at 51% of assets remain primary balance sheet risk.

Period-wise Analysis

H1 FY26 (Apr-Sep 2025)Order Book: ₹327 Cr
₹50.4 Cr
Revenue
11.2%
EBITDA Margin
2.9%
PAT Margin
Transition period with sharp margin compression. EBITDA dropped from 27.3% to 11.2% due to: (1) turnkey HVAC onsite execution costs, (2) hiring expansion 247→323 employees (+30%), (3) front-loaded employee costs before H2 revenue recognition. Gross margins also fell 45%→41% on product mix shift. Order book grew 52% from ₹215 Cr to ₹327 Cr. Management emphasizes H2 will be significantly stronger with operating leverage from fixed cost absorption.

Key Developments

→Order book grew 52% from ₹215 Cr to ₹327 Cr

→₹162 Cr in new orders — 1.6x full FY25 revenue

→Team expanded 247→323 employees (+30%)

→Smardt data centre cooling partnership announced

→Shareholders equity expanded to ₹200 Cr post-IPO

→Retrofit (green transition) = 32% of revenue

→Bid pipeline: ₹800 Cr naval + ₹200 Cr non-naval till March 2027

7Governance, Risks & Monitoring Checklist

Governance & Compliance

Strong board for an SME — retired Navy Commodore and Kargil War Vir Chakra awardee bring rare credibility. ISO 9001:2015 and ZED Gold certified. However: founder key-man risk, no formal succession plan, BSE SME listing (lower liquidity/disclosures), limited institutional presence. Trezor subsidiary (data centre) structured as commission+service model — worth monitoring for related party dynamics. Positive: explicit no-dilution commitment until ₹500 Cr revenue.

Key Risks

HighMargin Compression

H1 FY26 EBITDA crashed to 11.2% from 27.3%. Recovery to 20%+ by FY26 full year is the key test.

HighWorking Capital Intensity

Negative ₹24.9 Cr OCF in FY25. Multi-stage naval inspections structurally extend cash cycles.

HighDefence Concentration

Near 100% naval defence revenue. Diversification into data centres and merchant marine still early stage.

MediumData Centre Execution

Zero confirmed Smardt orders. Revenue only after 1-1.5 year execution cycle.

MediumKey Man Risk

Founder Ravalnath Shende is cornerstone of all naval relationships. No public succession plan.

MediumFixed Price Contracts

Gross margins already declined 45%→41%. No margin protection from input cost rises.

🚪

Exit Trigger

Exit if order book drops below ₹150 Cr (1.5x revenue), or if EBITDA margins don't recover above 20% by FY26 full year, or if data centre segment shows no order wins by FY27

Quarterly Monitoring Checklist

Check these items every quarter to track this stock

H2 FY26 revenue — must be significantly higher than H1 (₹140-150 Cr full year target)

EBITDA margin recovery above 20% by FY26 full year

Order book stays above ₹250 Cr (2.5x revenue run-rate)

First confirmed data centre order from Smardt partnership

New naval wins from DAC RFPs — ₹1.52 lakh Cr pipeline

Working capital normalization — receivables (51% of assets) and OCF turning positive

Greenfield facility (50,000 sq ft) commissioning — FY27 start

First merchant marine HVAC order

NGMV Cochin Shipyard execution — ₹4.83 Cr (delivery Feb 2030)

No equity dilution announcement — committed until ₹500 Cr revenue

Sources

1. Red Herring Prospectus (RHP) — Shree Refrigerations Limited (July 2025)

2. H1 FY26 Investor Presentation (November 2025)

3. H1 FY26 Post Earnings Conference Call Transcript (November 12, 2025)

4. BSE Notifications (November 2025)

5. BSE Notification — Danfoss Turbocor TASP (March 18, 2026)

6. BSE Notification — Navy B Class Ship Spares ₹2.41 Cr (March 18, 2026)

7. BSE Notification — NGMV Cochin Shipyard ₹4.83 Cr (April 17, 2026)

The Verdict

India's undisputed naval HVAC champion with a ₹327 Cr order book and regulatory moat that's nearly impossible to replicate. The data centre pivot via Smardt adds massive optionality. H1 FY26 margins were temporarily compressed due to front-loaded hiring and onsite execution — the real test is H2 FY26 margin recovery.

Watch For

H2 FY26 revenue acceleration (should be significantly higher than H1), EBITDA margin recovery towards 20%+, first data centre cooling order from Smardt partnership, new naval order wins from Defence Acquisition Council RFPs worth ₹1.52 lakh Cr pipeline.

India's sole naval HVAC company with all 3 defence registrations and a ₹327 Cr order book — defence moat or too concentrated?

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Disclaimer: For educational purposes only. Not SEBI-registered. Author may hold positions in stocks discussed. Not a buy/sell/hold recommendation. Do your own due diligence.

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