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Why Homeowners Are Choosing Windrush Installs for Their Window Replacements

Did you know that outdated windows could be costing you hundreds in wasted energy bills? Our high-performance, ENERGY STAR®-certified windows help reduce heat loss, lower energy bills by up to 30%, and keep your home comfortable year-round.

Energy-Efficient Windows That Save You Money

Upgrade Your Home with Energy-Efficient Windows

Expert installation, premium quality and a 10-year guarantee. Trusted by 1000s of homeowners.

Get Your Free Quote Today!

Professional Commercial HVAC Installation, Repair & Maintenance Scotland

From industrial ventilation systems to commercial heating and cooling, we provide expert HVAC solutions for businesses across Scotland.

Worried about dealing with a long, messy window replacement process? Our expert team ensures a smooth, hassle-free installation—no debris left behind, no damage to your home. We handle everything from removal to cleanup, so you don’t have to lift a finger.

No Mess. Professional Installation

Our energy-efficient, expertly installed windows improve your home’s comfort, curb appeal, and energy savings - backed by a 10-year guarantee.

Tired of companies pressuring you into making a decision? At [Company Name], we believe in transparency—no hidden fees, no high-pressure sales tactics. Get a free, detailed quote in just minutes, so you can make an informed decision on your schedule.

Get A Free, No Obligation Quote In Minutes

Get Your Free Quote Today!

G2 Refrigeration & Air Conditioning Ltd © 2025 All Rights Reserved

0141 882 9899

Rated 5/5 on Google Reviews

Scotland-Wide Coverage

F-Gas Certified Engineers

HVAC & Ventilation Specialists

24/7 Emergency Repair

Free Quotation

Get A Free Quote & Survey

Get Your Free 
HVAC Quote

Complete the form below and our team will provide a clear, fixed quote.

Prefer to speak to someone?

Rated 4.9/5 as "Excellent"

Step 2Step 1

We are a multi accredited, and F-Gas certified company.

Scotland Wide Coverage

24/7 Emergency Repair

Foster & Williams Specialists

F-Gas Certified Engineers

Free Quotation

Flexible

Options

Finance

1,000+

Systems Installed

Customer Satisfaction

24/7

HVAC Support

15+

Years of Expertise

15,000+

Windows Installed

4,500+

Doors Installed

7,000+

Homes Served

100%

100%

"We needed to engage with a refrigeration contractor that could support our exponential growth & development over the last 4 years. G2 have project managed the design & installation of our large scale chilled storage facilities in our 7 depots around Scotland & England with great success. I have found that their quality of workmanship has been excellent."

-  Calum McQueen

Your Commercial HVAC Design & Installation Partners

From industrial ventilation systems to bespoke office climate control, G2 Ref delivers accredited HVAC services trusted by businesses across Scotland.

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Our Services

HVAC 
Installation

Commercial HVAC Maintenance

HVAC Maintenance 
Contracts

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  • Custom Design – Built to fit your space and storage requirements.

  • Energy Savings – Advanced insulation and cooling technology for lower running costs.

  • Reliable Performance – Durable systems with expert installation and ongoing support.

Precision Cooling, Long-Term Savings

PRECISION STORAGE  ●  ENERGY-SMART   ●  ROYAL PERFORMANCE

Cold Room/Walk in Freezer Installation

Create the perfect storage environment for your business with our custom-built cold rooms and walk-in freezers. Designed for accuracy, efficiency, and durability, our systems keep your products at the right temperature, reduce waste, and save on energy costs.

  • Tailored to Your Space – Bespoke solutions designed for maximum comfort and performance.

  • Save on Costs – Energy-efficient systems that can reduce your running expenses by up to 40%.

  • Stress-Free Service – From design to installation and maintenance, we handle it all.

Cold Rooms

Bute Island Foods

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Commercial HVAC Installation: Trust the G2 Ref Experts

G2 Ref delivers bespoke HVAC solutions focused on long-term efficiency and performance. Our F-gas certified engineers provide authorised technical support for leading brands, including Daikin, Mitsubishi, and Sanyo systems.

  • Trusted by Leading Brands

  • Bespoke HVAC Design & Plan

  • 24/7 Support and Repair

  • F-Gas Certified Engineers

  • Industrial Ventilation Systems

  • Energy-Efficient Systems

With over 15 years' experience, we specialise in seamless, high-quality HVAC & Ventilation builds to last.

Site Survey & Consultation

Expert engineers assess your premises to recommend the most efficient system for your business.

Step 1

Tailored Quote & Plan

A transparent proposal covering equipment, clear timelines, and long-term energy performance.

Step 2

Expert Installation & Handover

F-Gas certified engineers manage the full install, technical handover, and ongoing HVAC support.

Step 3

Get Your Free Quote 👉

Our Commercial HVAC & Ventilation Process

Professional, efficient, and designed to minimise disruption to your Scottish business.

Prefer to speak to someone?

0141 882 9899Get a Free Quote

Rated Excellent by Businesses Across Scotland

"We had the pleasure of working with G2 on a large retail development. The company operates with total professionalism throughout. I would have no hesitation in recommending this business for all large scale installation works and reactive/planned maintenance throughout Scotland."

– Jamie Currie

Rated 5/5 based on
Yell Reviews

Rated 5/5 based on
Google Reviews

Rated Excellent in Heating, Cooling & Ventilation Solutions

"Subway have been working loyally with G2 for over 4 years . Their response times are same day or next day at the latest for less urgent issues. The communication from G2 on a whole is hugely impressive, from the engineers dealing with our staff on site and the admin team in the office. G2 service and maintain our 40 plus stores and have no issues meeting urgent response times to multiple stores on the same day. We have a very strong and reliable relationship with G2 and look forward to continuing our work with them in the future."

– Hahid Sadiq

Rated 5/5 based on
Yell Reviews

Rated 5/5 based on
Google Reviews

  • Tailored to Your Space – Bespoke solutions designed for maximum comfort and performance.

  • Save on Costs – Energy-efficient systems that can reduce your running expenses by up to 40%.

  • Stress-Free Service – From design to installation and maintenance, we handle it all.

Trusted by Scotland’s Leading Organisations

Bespoke Commercial HVAC Solutions

Borders General Hospital (NHS)

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G2 Ref replaced the critical climate control systems in the hospital’s main IT hub. The project required careful planning to mitigate server overheating risks and ensure 24/7 network reliability.

  • NHS Critical Infrastructure
  • High-precision IT cooling
  • Staggered installation plan
  • Full maintenance agreement
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  • Bespoke Design – Systems tailored to your exact storage and temperature requirements.

  • Energy Savings – Advanced technology that reduces waste and lowers running costs.

  • 24/7 Reliability – Durable systems backed by expert installation and ongoing maintenance.

Protect Your Stock, Reduce Your Bills

PRECISION COOLING  ●  MAX EFFICIENCY  ●  RELIABLE PERFORMANCE

Refrigeration Installation

Keep your products at the perfect temperature with refrigeration systems designed for accuracy, efficiency, and reliability. From small storage rooms to large commercial facilities, we deliver solutions that keep your operations running smoothly.

  • Tailored to Your Space – Bespoke solutions designed for maximum comfort and performance.

  • Save on Costs – Energy-efficient systems that can reduce your running expenses by up to 40%.

  • Stress-Free Service – From design to installation and maintenance, we handle it all.

Refrigeration

Bute Island Foods

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Rated Excellent in Cooling, Climate & Cold Storage Solutions

"Subway have been working loyally with G2 for over 4 years . Their response times are same day or next day at the latest for less urgent issues. The communication from G2 on a whole is hugely impressive, from the engineers dealing with our staff on site and the admin team in the office. G2 service and maintain our 40 plus stores and have no issues meeting urgent response times to multiple stores on the same day. We have a very strong and reliable relationship with G2 and look forward to continuing our work with them in the future."

– Hahid Sadiq

Rated 5/5 based on
Yell Reviews

Rated 5/5 based on
Google Reviews

Rated 4.9/5 as "Excellent"

Rapid-response design and installation for industrial ventilation systems.

Bespoke design and installation for retail, offices, and industrial facilities.

Industrial 
Ventilation

Tailored HVAC maintenance to prevent breakdowns and cut your energy costs.

High-capacity cooling for warehouses, factories, and supermarkets.

Expert service for all major HVAC brands, ensuring your staff stay comfortable.

Our Case Studies

Wonderland Livingston

The Normandy Hotel

Scottish Water Dunfermline

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Contact our engineers for a free site survey. Whether you need an HVAC installation or urgent system repairs, we provide fast, fixed-price proposals for your business.

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