Purpose-Built Apps for NZ Professionals

The Tools NZ HVAC & Refrigeration Professionals Use Every Day

Two purpose-built mobile apps — EzeCalc for HVAC design and engineering calculations, and Gas Cylinder Mate for refrigerant technicians in the field. Both built for New Zealand.

📷 Mobile-first PWA 🏴 Built for NZ 👤 1,100+ users 📱 Add to home screen

Open EzeCalc › Open Gas Cylinder Mate ›

1,100+

Registered users across both apps

Purpose-built apps for the trade

Standards & data — NZS, AS/NZS

$10

EzeCalc PRO from $10/month

EzeCalc

The mobile HVAC engineering toolkit for designers, contractors, and technicians. Calculations, product selection, compliance tools, and AI-powered reference — all in one place.

HVAC Design Refrigerant Tools Product Selection AI Assistant

What EzeCalc Does

🌡

Heat Load Calculator

NZS 4218 compliant heating & cooling loads across multiple rooms

❄

Heat Pump Selection

Find the right unit by capacity and manufacturer from NZ product data

💧

Hot Water Heat Pump

Select HWHP systems with full performance data

⚡

Energy Calculator

Compare running costs — heat pump vs gas vs electric vs wood

⏱

Pressure Testing

N₂ hold time calculator with printable compliance certificate

🛡

Gas Safety Calculator

Maximum safe refrigerant charge per AS/NZS 5149

📊

Performance Check

COP diagnostics & P-h cycle analysis for R410A, R32, R290, R454B

⚠

Fault Code Lookup

Search heat pump fault codes by manufacturer, code, or symptom

🤖

HVAC&R AI Assistant

Ask refrigerant theory, NZ standards & commissioning questions.

🔧

Maintenance Schedule

Log service intervals, jobs, and run a full service checklist

🌫

Fresh Air & More

Fresh air calc, unit converter, flare nut torque, N₂ P/T correction

PRO

EzeCalc requires a monthly or annual subscription to access the full toolkit — performance diagnostics, energy calculator, gas safety calculator, fault code lookup, saved projects, and more. Includes the HVAC&R AI Assistant — a reference tool for refrigerant theory, NZ standards, and commissioning questions. From $10/month.

Open EzeCalc › View PRO Plans ›

Gas Cylinder Mate

The free field companion for NZ refrigerant technicians. Cylinder fill calculations, LAB lookups, and compliance references — exactly where you need them.

Refrigerant Tech Field Use Compliance

What Gas Cylinder Mate Does

⛤

Cylinder Fill Calculator

Calculate fill quantities for NZ refrigerant cylinders quickly on-site

📚

LAB Lookup

Fast lookup of refrigerant labels, safety data, and handling requirements

✅

Compliance Tools

NZ refrigerant compliance references for technicians in the field

🏷

Supplier Deals

Exclusive offers and promotions from NZ trade suppliers each month

Free

Gas Cylinder Mate is completely free for all registered NZ refrigerant technicians. Register once and get instant access — no subscription required.

Open Gas Cylinder Mate ›

Who Are These Apps For?

EzeCalc is built for

HVAC designers and consultants
Refrigeration and air conditioning contractors
Heat pump installers and technicians
Building and energy assessors
Anyone performing NZS 4218 heat load calculations
Skillsure course graduates and members

Gas Cylinder Mate is built for

Registered refrigerant technicians
Refrigerant handlers and fillers
HVAC service technicians in the field
Apprentices learning refrigerant handling
Anyone who needs quick cylinder fill data on-site
NZ refrigerant compliance reference on the go

Join 1,100+ NZ Trade Professionals

EzeCalc PRO is available by monthly or annual subscription from $10/month. Gas Cylinder Mate is completely free for all registered NZ refrigerant technicians.

Subscribe to EzeCalc › Get Gas Cylinder Mate Free ›

Monthly & annual plans available · Any smartphone or tablet · Cancel anytime