+383 49 787 233
Knowledge hub

Free guides & eBooks for your projects.

Practical, no-cost resources written by APIS engineers — playbooks, checklists and feasibility guides on energy, HVAC-R, solar, smart buildings, ESG and lifecycle delivery. Pick what's useful, tell us where to send it, and it's yours.

The library

Resources you can put to work this week.

Each download is a focused, field-tested resource — no sales fluff. We email it to you instantly, and only send more if you ask us to.

APIS Guide 01 — Hospital Ventilation & Classified Areas, 29-page PDF
APIS Guide

Hospital Ventilation & Classified Areas

29 pages · PDF Healthcare & HVAC-R

How to specify, tender and validate operating theatres and clean areas — with a forty-point checklist you can take into your own tender documents.

Get the guide
APIS Guide 02 — District Heating Connection & Conversion, 27-page PDF
APIS Guide

District Heating Connection & Conversion

27 pages · PDF Energy & District Heating

The two numbers that decide your bill for the next twenty years — and how to get both of them right before you sign.

Get the guide
APIS Guide 03 — Battery Energy Storage for Commercial & Industrial Sites, 29-page PDF
APIS Guide

Battery Energy Storage for Commercial & Industrial Sites

29 pages · PDF Energy & Storage

Sizing, safety and integration — starting with the one question most storage projects never answer properly.

Get the guide
APIS Guide 04 — Technical Due Diligence for Property Acquisition, 27-page PDF
APIS Guide

Technical Due Diligence for Property Acquisition

27 pages · PDF Engineering & Advisory

Scoping the assignment, what to inspect system by system, and how findings become price — with a 40-point checklist.

Get the guide
APIS Guide 05 — The Building Energy Audit Playbook, 26-page PDF
APIS Guide

The Building Energy Audit Playbook

26 pages · PDF Energy & ESCO

A step-by-step method for finding, sizing and evidencing energy savings before you spend on new equipment.

Get the guide
APIS Guide 06 — Solar PV for Commercial Buildings, 28-page PDF
APIS Guide

Solar PV for Commercial Buildings

28 pages · PDF Solar & Renewables

Sizing, return on investment and grid-connection essentials for rooftop and ground-mount PV across the Western Balkans.

Get the guide
APIS Guide 07 — HVAC-R Lifecycle Costing, 24-page PDF
APIS Guide

HVAC-R Lifecycle Costing

24 pages · PDF HVAC-R

A capital-versus-operating framework for weighing retrofit, replacement and refrigerant-transition options.

Get the guide
APIS Guide 08 — EV Charging for Commercial and Fleet Sites, 25-page PDF
APIS Guide

EV Charging for Commercial and Fleet Sites

25 pages · PDF EV Charging

What it takes to charge a commercial fleet — load, standards, tariffs and the works that decide the budget.

Get the guide
APIS Guide 09 — The Smart Building Readiness Checklist, 25-page PDF
APIS Guide

The Smart Building Readiness Checklist

25 pages · PDF Smart & Automation

Assess your building's digital maturity across controls, metering, connectivity and integration.

Get the guide
APIS Guide 10 — EU Taxonomy & ESG for Property Owners, 25-page PDF
APIS Guide

EU Taxonomy & ESG for Property Owners

25 pages · PDF Sustainability

What environmental alignment actually requires of new-build and retrofit projects, in plain terms.

Get the guide
APIS Guide 11 — EV Charging Infrastructure Planning, 24-page PDF
APIS Guide

EV Charging Infrastructure Planning

24 pages · PDF EV Charging

Load assessment, standards and futureproofing to scope charging for car parks, fleets and sites.

Get the guide
APIS Guide 12 — Specifying Fire Detection and Suppression, 27-page PDF
APIS Guide

Specifying Fire Detection and Suppression

27 pages · PDF Fire Protection

How detection, alarm and suppression are specified, tendered and commissioned — and where specifications go wrong.

Get the guide
APIS Guide 13 — Electrical Capacity and Resilience, 26-page PDF
APIS Guide

Electrical Capacity and Resilience

26 pages · PDF Electrical & Power

Capacity, backup and resilience for buildings that cannot afford to lose power.

Get the guide
APIS Guide 14 — Lighting That People Can Work Under, 26-page PDF
APIS Guide

Lighting That People Can Work Under

26 pages · PDF Lighting

Light levels, glare and control — what good lighting requires, and how to specify it.

Get the guide
Get your guide

Tell us where to send it.

Choose a resource, add your email, and we'll send the download link straight to your inbox — no cost, no obligation. Your details are processed per our privacy notice and you can unsubscribe in one click.

  • Instant download link by email
  • Written by practising APIS engineers
  • GDPR-compliant — unsubscribe anytime