Commercial HVAC & Refrigeration Specialists
Commercial Refrigeration & Ventilation Services
When your commercial refrigeration or ventilation system goes down, your business stops. Diamond Double J responds fast, works efficiently, and gets you back up and running with minimal downtime.
Commercial-Grade Service
Protecting Your Business, Your Product & Your Reputation
A failed walk-in cooler or broken exhaust system can cost you thousands in lost inventory and health code violations. We understand the urgency — and we bring the same honest, experienced service to commercial clients that homeowners have trusted us for over 30 years.
Industries We Serve
Commercial Refrigeration
We install, repair, and maintain commercial refrigeration systems for restaurants, grocery stores, convenience stores, and food service operations throughout Central and South Texas.
- Walk-in cooler & freezer installation
- Walk-in cooler & freezer repair
- Reach-in refrigerator service
- Refrigerant leak detection & recharge
- Compressor & condenser repair
- Preventive maintenance contracts
Commercial Ventilation
Proper ventilation is critical for air quality, employee comfort, and code compliance. We design, install, and service commercial ventilation systems for kitchens, warehouses, and commercial spaces.
- Kitchen exhaust hood installation & repair
- Supply & exhaust fan service
- Make-up air unit installation
- Rooftop HVAC unit service
- Air quality & circulation assessment
- Code compliance inspections
Why Businesses Choose Diamond Double J
Fast Response Times
We know downtime costs money. We prioritize commercial calls and respond quickly.
Preventive Maintenance Plans
Scheduled maintenance keeps your systems running and catches problems before they become emergencies.
Licensed & Insured
License No. TACLA146241C. Fully insured for commercial work.
Honest, Transparent Pricing
We quote upfront. No hidden fees, no surprise invoices.
Need Commercial Service?
Call us to schedule service or discuss a maintenance contract for your business.