A MushroomWale compost tunnel and bunker walls under construction
Pasteurization Infrastructure

Phase-2 Pasteurization Tunnels for Mushroom Farms

Sealed Phase-II tunnels with plenum airflow, a recirculation blower and a control panel, holding 58–60 °C for pasteurisation of Agaricus bisporus compost. Priced with the compost unit: ₹6,46,000 for 20 T, ex-GST.

GSTIN 09AAZCA0158R1ZP·Turnkey farms built·Plenum air system + controls
The short answer

What Is a Phase-2 Pasteurization Tunnel?

A Phase-2 pasteurization tunnel is a sealed, insulated chamber with a plenum floor and recirculation blower. Compost is pasteurised at 58–60 °C for 6–8 hours (never above 62 °C), killing pathogens and competitor moulds, then conditioned at 45–50 °C for 4–6 days until ammonia is gone and cooled to 25 °C for spawning.

Why Pasteurization Is Non-Negotiable

Unpasteurized compost invites crop failure from Trichoderma green mold, nematodes, and competitor fungi. A proper Phase-2 tunnel ensures selective compost with 10× lower contamination risk compared to room pasteurization.

What's Inside a MushroomWale Phase-2 Tunnel

Sealed, Insulated Shell

An airtight tunnel that holds 58–60 °C for pasteurisation and 45–50 °C for conditioning.

Plenum Air System

Under-floor grated plenum ensures uniform airflow through the compost mass for even pasteurization.

Recirculation Blower

7.5 HP (20 T) or 10 HP (30 T) blower moving air through the plenum, with a fresh-air damper.

Complete compost infrastructure

Control Panel

Tunnel control panel with temperature probes in the compost and the air, holding the pasteurisation and conditioning set-points.

Fresh-Air Damper

A fresh-air intake with a damper sets the fresh-air : recirculation ratio while the compost conditions.

Commissioning & Training

Complete testing, first-batch supervision, and operator training on pasteurization protocols.

Phase-2 Tunnel BOQ Checklist

Plenum air distribution through the tunnel floor
Airtight, high-temperature tunnel door (heavy-duty MS gate)
Recirculation blower: 7.5 HP (20 T) or 10 HP (30 T)
8″ HDPE air mains and 4″ PVC spigots
Flex pipe for air distribution
Fresh-air intake with damper
Tunnel control panel with temperature probes
Bunker blowers and bunker control panel (Phase-I side of the unit)
Installation, electrical work and commissioning
Operator training and SOP documentation
Civil shell — RCC slab and tunnel walls — by the client, to our drawing
Cost & return

Phase-2 Tunnel Setup Cost (2026)

Compost unitPrice (ex-GST)ServesCivil (client scope)
20 T (2 bunkers + tunnel)₹6,46,000Up to 6 × 18×40 ft rooms₹8–10 Lakhs
30 T (2 bunkers + tunnel)₹7,08,000Up to 6 × 18×60 / 18×70 ft rooms₹12–14 Lakhs

* Rate card v2.92, ex-GST. Civil work, land and GST @18% are extra.

Calculate Your Exact ROI
Case study

Case Study

Representative photo of a straw bale, close up
Representative photoBaled straw, close up

Dual Phase-2 Tunnel — Agra, UP

Location
Agra, Uttar Pradesh
Tunnel Capacity
2 × 20 tonnes
Farm Size
10-room commercial
The Phase-2 tunnels transformed our operation. Contamination dropped sharply, and compost quality became completely consistent batch after batch.
— Farm Manager, Agra
View all projects →

Phase-2 Tunnel FAQ

The company behind the build

Why Choose MushroomWale

  1. 01

    Engineering Expertise

    Agrimotion Engineering Private Limited is a registered EPC company (CIN U43900UP2023PTC185328, GSTIN 09AAZCA0158R1ZP) based in Firozabad, Uttar Pradesh.

  2. 02

    Proven Track Record

    Turnkey mushroom projects from a 2-room starter to a 20-room commercial farm.

  3. 03

    Bank-Recognized DPRs

    Bank-format DPRs prepared to NABARD, NHB and MIDH norms for loan and subsidy applications.

Bankable DPR · 15-Module Training · Quote in 24h

DPR, Subsidy & Training for Your Phase-II Pasteurization Tunnels Project

Every MushroomWale project ships with a NABARD-compliant DPR and access to our hands-on training curriculum — so you're farm-ready from Day 1.

Bankable DPR & Subsidy Filing

  • NABARD / NHB / MIDH / PMEGP compliant format
  • Itemized BOQ, cash-flow & break-even analysis
  • Subsidy mapping — MIDH or NHB, plus state top-ups
  • Bank loan submission support
Learn about DPR & bank loans

15-Module Hands-On Training

  • Composting (Phase I & Phase II) protocols
  • Spawning, casing & cropping practice
  • Climate control, IPM & post-harvest
  • Based on ICAR-DMR Solan curriculum
View full training curriculum

Get your Phase-II Pasteurization Tunnels quote + DPR within 24 hours

Free site evaluation · GST 18% & transport extra · 5-day quote validity

Stacked wheat straw bales
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Ready to Build Your Pasteurization Tunnel?

Get custom tunnel design and complete EPC setup. Free site survey available.

  • Turnkey farms built
  • Pan-India delivery
  • Bank-ready DPR