Installer Resources & Technical Guides

Free downloadable checklists, pipe sizing charts, selection guides, and F-Gas compliance documents for professional HVAC engineers and installers. Produced by the Airconspares trade team.

✅ 7 Free Resources ✅ Printable Field Sheets ✅ F-Gas Compliant Guidance ✅ Updated 2026 ✅ Trusted by 1,000+ HVAC Engineers

🔥 Most Popular Installer Resources

The three most downloaded resources by UK HVAC engineers.

Vacuum Procedure Checklist

Step-by-step F-Gas compliant evacuation procedure for R32, R410A & R1234yf systems.

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Refrigerant Pipe Sizing Chart

Liquid & suction line sizing by system capacity and pipe length. Printable A4.

⬇️ Download Free

F-Gas Compliance Checklist

Pre and post-work compliance checklist covering certification, leak checks & refrigerant records.

⬇️ Download Free

Installation Guides & Procedures

Installation

Revision 1.0 — 2026

Vacuum Procedure Checklist

Complete step-by-step AC system evacuation procedure for F-Gas compliant commissioning. Covers equipment setup, target micron levels, hold test pass/fail criteria, and post-evacuation sign-off for R32, R410A, and R1234yf systems.

📋 Printable Field SheetR32 • R410A • R1234yf

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Installation

Revision 1.0 — 2026

Pressure Testing with Nitrogen Checklist

Pre-evacuation OFN pressure test procedure with pass/fail criteria, hold test guidance, and leak location steps. Includes documentation requirements for F-Gas compliance records.

📋 Printable Field SheetF-Gas Compliant

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Pipe Sizing & Insulation

Pipe Sizing

Revision 1.0 — 2026

Refrigerant Pipe Sizing Chart

Liquid and suction line sizing reference by system capacity (kW) and total pipe length for R32 and R410A systems. Covers residential splits through VRF/VRV. Includes insulation wall thickness reference table. Printable A4.

📊 Reference ChartR32 • R410APrintable A4

⬇️ Download Free (PDF)

Insulation

Revision 1.0 — 2026

Pipe Insulation Wall Thickness Guide

Wall thickness selection by pipe OD, application, and environment. Covers 9mm, 13mm, 19mm, and 25mm specifications for HVAC and refrigeration. Includes K-Flex vs Armaflex product selection guide and critical sealing notes.

📊 Selection GuideK-Flex • Armaflex

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Product Selection Tools

Selection Tool

Revision 1.0 — 2026

Condensate Pump Selection Chart

Head height vs flow rate decision matrix covering Aspen, Sauermann, Blue Diamond, and Charles Austen ranges. Includes pump type guide (mini, tank, reservoir, peristaltic), brand comparison, and key specification checklist.

📊 Decision MatrixAspen • Sauermann • Blue Diamond

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Compliance & F-Gas

Compliance

Revision 1.0 — 2026

F-Gas Compliance Checklist

Pre and post-work F-Gas compliance checklist for AC installation and service. Covers engineer certification, refrigerant handling, pressure testing, evacuation, charging, leak checks, and record-keeping obligations under UK F-Gas regulations.

📋 Printable Field SheetUK F-Gas 2024

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Compliance

Revision 1.0 — 2026

R32 & A2L Refrigerant Safety Checklist

Safety and compliance checklist for working with R32 and A2L mildly flammable refrigerants. Covers tool compatibility, site assessment, ventilation, charge limits, brazing safety, evacuation, charging, and mandatory system labelling.

📋 Printable Field SheetR32 • R1234yf • A2LF-Gas Compliant

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