Custom AHU or packaged rooftop unit?

Below ~15,000 m³/h and standard air quality, packaged rooftop units usually win on install cost and lead time. Above that, or for hygienic / clean-room duty, custom AHUs allow the right coil rows, filtration stages, heat recovery and casing class.

What EUROVENT / EN 1886 class should I specify?

Commercial offices: casing L2, thermal T3, thermal-bridge TB3 is a reasonable baseline. Hospitals and pharma: L1, T2, TB2 with EPA/HEPA filtration and hygienic construction (VDI 6022, EN 1946).

Is a heat recovery wheel always worth it?

In climates with meaningful heating hours and dense fresh-air demand, yes — payback is typically 2–4 years. Skip only where fresh-air ratio is very low or hygienic segregation forbids cross-contamination (use run-around coils instead).

How fast can ColdMatch source AHUs?

A structured brief goes to shortlisted OEMs within 48 hours. Standard AHU packages typically quote in 1–2 weeks; custom hygienic AHUs 3–4 weeks.

How should a air handling units project be planned before requesting quotes?

Define the project scope first — capacity, temperature ranges, throughput, site constraints and required certifications — then use that scope to brief suppliers. Sending vague enquiries produces quotes that can't be compared. ColdMatch is supplier-neutral: we help structure the project before matching it to shortlisted vendors worldwide.

What drives the budget of a air handling units project?

Capacity, refrigerant strategy (NH₃, CO₂, HFO or hybrid), automation level, envelope quality, controls, redundancy and site-specific factors like power availability and climate. Country and logistics also matter. Use the ColdMatch cost benchmarks and infrastructure builder to model a realistic range before financing conversations.

What is a typical timeline for a air handling units project?

From concept to commissioning most commercial cold-chain projects run 9–24 months: FEED and RFQ (2–4 months), procurement and long-lead equipment (3–6 months), civils and installation (4–10 months), commissioning and validation (1–3 months). Complex pharma, ASRS or transcritical CO₂ projects can extend further.

What are the most common mistakes buyers make on air handling units projects?

Buying equipment before defining the project, under-sizing refrigeration load, ignoring commissioning and validation, single-sourcing without a neutral bid comparison, and treating financing as an afterthought. ColdMatch provides planning checklists, RFQ templates and a supplier-neutral tender flow to avoid these traps.

Air Handling Units

Air handling units (AHUs) — commercial, industrial, hygienic and clean-room

Draw-through and blow-through AHUs from 1,000 to 200,000 m³/h — with coils, filters, humidifiers, heat recovery wheels and EC fan arrays. ColdMatch runs a vendor-neutral RFQ across 100+ audited AHU manufacturers, benchmarking SFP, EUROVENT class, EN 1886 leakage and lifecycle cost.

Human Global Expert Guidance•Vendor-Neutral Procurement•Qualified International Suppliers•Commercial Confidentiality

Get Free Quotes — Prefilled RFQ Equipment Intelligence

EUROVENT-certified, EN 1886 leakage class
EC plug-fan arrays, heat wheels, run-around coils
Hygienic and GMP clean-room AHUs (VDI 6022, EN 1946)
Custom, modular and packaged rooftop units

Section 1

AHU technology & buying guides

Configuration, coil selection, heat recovery, filtration and hygienic construction — vendor-neutral.

AHU — Full Buying GuideCasing, coils, fans, filters, humidifiers, heat recovery, controls and spec checklist.Open Clean-Room HVAC & Hygienic AHUsISO 14644 / GMP Grade A–D, HEPA filtration, pressure cascades, 21 CFR Part 11 monitoring.Open AHU Coils (DX & CW)Direct-expansion vs chilled-water coils — sizing, coil rows, glycol and low-temp duty.Open Cooling Towers (CW Plant)For AHUs on a central chilled-water plant with cooling-tower rejection.Open AHU Controls & BMSVAV, DCV, CO₂-based control, night purge and BMS integration for real energy savings.Open Heat Recovery for AHUsHeat wheels, run-around coils and plate exchangers — 60–85% sensible efficiency.Open

Section 2

AHU applications

Where AHUs deliver value and how ColdMatch briefs the market.

Commercial HVAC HubOffices, hotels, malls and hospitals — chilled-water AHUs and rooftop packages.Open Pharma & GMP Clean RoomsHygienic AHUs for Grade A–D suites, HEPA terminal filtration and pressure cascades.Open Data Center CRAH / AHUHigh-airflow AHUs, adiabatic and free-cooling for data hall temperature and humidity control.Open Battery Dry-Room AHUsUltra-low dew point AHUs for electrode and cell assembly in gigafactories.Open Industrial AC (AHU-based)Process AC packages with AHU + chiller + dehumidification for manufacturing.Open Refrigeration Tech CenterDeeper technology comparisons behind the AHU coil — CO₂, ammonia, HFC, defrost strategy.Open

Section 3

AHU sizing & cost calculators

Convert space and process loads into airflow, coil duty and energy cost.

Cooling Capacity (kW / TR / BTU)Convert AHU coil duty between units and cross-check chiller sizing.Open Full Heat / Cooling LoadEnvelope + internal + fresh-air loads to size the AHU coil accurately.Open AHU Fan Energy CostSFP and fan-hours converted to annual kWh and OPEX.Open Heat-Recovery SavingsModel the OPEX delta of adding a heat wheel or plate exchanger to an AHU.Open DX AHU Compressor SizingRight-size the DX compressor package feeding the AHU coil.Open AHU Financing / LeaseCAPEX vs equipment finance vs lease for AHU packages.Open

Section 4

Related HVAC clusters

Pillar hubs that connect AHU procurement to the wider HVAC and refrigeration stack.

Chillers ClusterThe chilled-water plant that feeds the AHU coils.Open HVAC MarketplaceFull HVAC hub — chillers, heat pumps, cooling towers, VRF, ventilation and controls.Open Energy EfficiencyOPEX levers across HVAC and refrigeration — heat recovery, VSD, controls, envelope.Open Equipment IntelligenceAll equipment buying guides in one library.Open

FAQ

Air Handling Units — frequently asked

How ColdMatch Group works — independent B2B procurement and sourcing platform — ColdMatch Group is an independent B2B procurement and sourcing platform for industrial refrigeration, cold storage and cold-chain projects from USD $250K+, connecting buyers with qualified third-party suppliers, EPC contractors and independent financing providers.

Project-first

Plan the air handling units project before choosing suppliers

Complete cold-chain outcomes depend on planning, budget realism, timeline discipline and neutral bid comparison — not on picking equipment first.

Project planning checklist

Cover the fundamentals before you brief suppliers.

·Define capacity, temperature bands and throughput
·Confirm site, power, water and permits
·Choose refrigerant strategy and automation level
·Set redundancy, monitoring and validation targets
·List required certifications (GDP, HACCP, BRC, ISO)
·Agree budget envelope and financing route

Full planning checklist (download)Infrastructure Builder

Budget factors

What actually moves the number on a commercial cold-chain project.

·Refrigeration plant + refrigerant choice
·Panels, envelope, floors, doors and structure
·Racking, MHE and automation level
·Controls, monitoring, alarms and BMS
·Redundancy (N, N+1, 2N) and validation
·Country, logistics, duties and installation labour

Budget planning guide Cost benchmarks Financing routes

Typical project timeline

Rule-of-thumb schedule for a commercial cold-chain project.

FEED, scope, RFQ2–4 months
Bid review, contracting1–2 months
Procurement + long-lead3–6 months
Civils, installation4–10 months
Commissioning, validation1–3 months

Project planning guide Master Planner

Common mistakes to avoid

Recurring patterns across hundreds of cold-chain briefs.

·Buying equipment before defining the project
·Under-sizing refrigeration load and standby
·Skipping commissioning, validation and training
·Single-source without a neutral bid comparison
·Ignoring refrigerant regulation and phase-out
·Treating financing as an afterthought

Commercial risk guide Refrigerant phase-out guide

Related resources

Continue the air handling units project

Project Builders (15 verticals)

Preset the Infrastructure Builder by industry.

Start a neutral RFQ

Structured brief to shortlisted suppliers.

Equipment Intelligence

Compare technologies before buying.

Procurement Academy

Incoterms, FAT/SAT, factory inspection.

Global Project Map

Reference projects worldwide.

Trust Center

How ColdMatch stays supplier-neutral.

ColdMatch Group is the specialized cold-chain platform of Global B2B Group — the worldwide B2B procurement and project ecosystem.

Brief the market on your air handling units project

One structured RFQ, vendor-neutral to shortlisted suppliers. Prefilled with pillar context — you refine the details. No commitment, no fees.

Compare Suppliers — Prefilled RFQ

Qualify, then request quotes

Take this to a structured cold storage RFQ

Suppliers quote accurately only when capacity, temperature bands, throughput and site conditions are defined. Use the qualification guidance first, then issue one comparable RFQ.

Cold storage RFQ checklistEverything a supplier needs before pricing a facility.Capacity & load qualificationSize pallet positions, temperature zones and peak load.Project documentation centerDrawings, utilities and permits to assemble upfront.

Start structured RFQ — free How the process works

Supplier-neutral. Free for buyers and project owners. Best suited to commercial projects from USD $250,000.