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All Consulting + D&C Templates

A practical library of design proposal letters, sample specifications, and editable spreadsheets for HVAC&R consulting engineers and D&C contractors.  These templates help you turn technical data and product information into clear, professional design summaries — suitable for client proposals, alternate submissions to builders, and design development. Naturally we have focused our efforts on more innovative products rather than recreating what you already have from the last job. You can adapt each template freely — they’re meant as a head start, not a locked-down spec.
Apartment
Cleanroom
Cold/Freezer Rooms
Design Proposal: Air Distribution
Design Proposal: Apartment Ventilation
Design Proposal: Dehumidifier
Design Proposal: Hygiene/Mould
Design Proposal: Remote Access
Pharmaceutical
Refurbishment
Specification: Construction Coordination
Specification: Humidifiers
Specification: Kitchen Grease Prefilters
Specification: Reverse Osmosis
Specification: Ultraviolet
Specification: VRF Corrosion
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Manufacturers Specifications Text – CAREL Humidification Systems

A Consulting Engineer’s Guide to Contract-Ready Specifications This article consolidates the key CAREL humidification systems and links directly to both: The official product page The official “Text for Specifications” or “Text for Contract Specifications” document If you are writing a design specification for humidification in a hospital, laboratory, data centre, commercial office, or specialist process facility, this is where you Read more…
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Design Proposal – Smart Diffusers for Individual Comfort Control in Medical Consulting Rooms

Dear [Client/Project Team], As part of improving comfort control within the consulting rooms, I’d like to put forward the option of using ecoHVAC electronic smart diffusers with local room controllers. This provides clinicians with meaningful individual comfort control while maintaining the engineering integrity of the HVAC system. 1. Proposed Design Solution Install ecoHVAC electronic smart diffusers in each consulting room, Read more…
Screenshot 13 2 2026 185917 www.controlstore.com .au

Design Proposal – Tosi Remote Access Solution

Prepared by: [Your Company] (Mechanical / Controls Contractor)Project: Remote Access for HVAC Plant, BMS & VRF SystemsStage: Refurbishment / Upgrade / Commissioning Support 1. Proposed Design Solution As part of the construction works, we propose integrating a Tosi Remote Access Gateway to provide a secure, dedicated remote-connection path to the site’s HVAC and BMS equipment. This allows our technicians and Read more…
Screenshot 13 2 2026 155331 www.humiscope.com .au 768x303

Design Proposal – Ultra-Dry Dehumidifier System for Pharmaceutical Cleanrooms, Weighing Rooms & Hygroscopic Material Handling Spaces

Dear [Client / Builder / Consultant Name], Pharmaceutical cleanrooms require precise moisture, temperature and particulate control to ensure product stability, prevent contamination, and maintain regulatory compliance. On this basis, we propose the installation of a Humiscope TFT Ultra-Dry Desiccant Dehumidifier System for the nominated Pharmaceutical Cleanroom / Weighing Room / Hygroscopic Powder Handling Area. Humiscope specialise in engineered low-humidity environments, Read more…
Screenshot 13 2 2026 153218 www.ecoduct.com .au

Design Proposal – EcoDuct Flat Duct System for Apartment Laundry, Bathroom & Toilet Exhaust

Project: [Insert Project Name] Dear [Client / Project Team], As part of the mechanical services design for the apartment development, we propose the use of the EcoDuct flat duct system as a direct alternative to conventional galvanised sheet metal ductwork for: Laundry exhaust Bathroom exhaust Toilet exhaust EcoDuct is a purpose-designed flat duct solution specifically developed for residential and multi-residential Read more…
Screenshot 11 2 2026 21819 san air.com .au 1

Design Proposal: SAN-AIR Vapour-Phase IAQ Treatment For HVAC Refurbishment & Existing HVAC

Dear Project Team, As part of the mechanical refurbishment works, I am proposing the integration of SAN-AIR vapour-phase antimicrobial products within the existing HVAC systems (AHUs, FCUs, split systems and cassette units). This solution directly addresses the mould, bacterial growth and IAQ issues we commonly observe in ageing systems — particularly where coils, return-air paths, ceiling plenums and condensate trays Read more…
Screenshot 1 2 2026 64459 airrestore.com .au

Design Proposal – Air Restore HVAC Hygiene Audit Prior to Refurbishment Works

Design Proposal – Air Restore HVAC Hygiene Audit Prior to Refurbishment Works Dear Project Team, As part of the upcoming refurbishment works, I am proposing that Air Restore undertake a full HVAC Hygiene Audit of the existing mechanical systems before any demolition, ceiling removal or mechanical upgrade begins. This audit provides a baseline condition assessment of the entire HVAC system, Read more…
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Design Proposal – DuctSox Fabric Air-Distribution as an Alternative to Sheet Metal Ductwork

Design Proposal – DuctSox Fabric Air-Distribution as an Alternative to Sheet-Metal Ductwork Prepared for: [Client / Project]Prepared by: [Your Name / Company]Date: [Insert] 1. Executive Summary We propose DuctSox® engineered fabric ducting, supplied by ecoHVAC, as a superior alternative to conventional sheet-metal ductwork for this project.DuctSox is specifically engineered for open-plan spaces, provides uniform low-velocity air distribution, prevents condensation through Read more…
Screenshot 1 1 2026 151052 www.australianuv.com .au 1 768x558

UVC Treatment Behind Evaporator Coils – Freezer Room and Cold room -Design Proposal Template

Dear Project Team, Following our recent inspection of the existing cold and freezer rooms, visible mould growth and biofilm formation were observed on and around the evaporator coil assemblies, including coil fins, drain trays, and room surfaces.   While room air temperatures are low, the evaporator environment itself operates with persistent moisture, intermittent warming during defrost cycles, and organic loading, Read more…
Screenshot 19 1 2026 93336 steril aire.com .au 768x525

Ultraviolet UVC Systems – Manufacturers Specification

Designing with Real-World Performance, Not Just Lamp Wattage Ultraviolet-C (UVC) disinfection has become a widely adopted solution for controlling microbial growth in air-handling systems and improving indoor air quality. However, not all UVC systems — or UVC specifications — are created equal. Many project documents still refer to UVC in vague terms such as “provide UVC lamps to coil” or Read more…