Commercial HVAC Services
Expert heating, ventilation, and air conditioning solutions for Central Iowa businesses since 1932
Complete Commercial HVAC Solutions
AJ Allen Mechanical Contractors provides comprehensive commercial HVAC services for businesses throughout Central Iowa. Our certified technicians design, install, and maintain energy-efficient heating, ventilation, and air conditioning systems that ensure optimal comfort, indoor air quality, and operational efficiency.

With over 90 years of HVAC experience, we understand the unique requirements of different commercial environments and provide customized solutions that meet your facility's specific needs while maximizing energy efficiency and minimizing operational costs.
Comprehensive HVAC Services
HVAC System Design & Engineering
Custom HVAC system design tailored to your facility's specific requirements, occupancy patterns, and energy efficiency goals.
- Load calculations and system sizing
- Energy modeling and efficiency analysis
- Equipment selection and specification
- Ductwork design and layout
- Building code compliance and permit coordination
Commercial HVAC Installation
Professional installation of commercial-grade HVAC equipment by certified technicians using industry best practices and quality materials.
- Rooftop units and package systems
- Split systems and ductless mini-splits
- Variable refrigerant flow (VRF) systems
- Chilled water and boiler systems
- Ductwork installation and modification
Building Automation & Controls
Advanced control systems that optimize HVAC performance, reduce energy consumption, and provide remote monitoring capabilities.
- Programmable thermostat installation
- Building management system integration
- Zone control systems
- Energy management and monitoring
- Remote access and diagnostics
Indoor Air Quality Solutions
Comprehensive indoor air quality services to ensure healthy, comfortable environments for your employees and customers.
- Air filtration system upgrades
- UV germicidal irradiation systems
- Humidity control systems
- Ventilation system optimization
- Air quality testing and monitoring
Specialized HVAC Applications
Our expertise extends to specialized HVAC applications requiring precise environmental controls and advanced technical knowledge.
Healthcare HVAC Systems
Specialized HVAC systems for medical facilities requiring precise temperature and humidity control, infection control measures, and compliance with healthcare standards.
Laboratory & Research Facilities
HVAC systems for laboratories and research facilities requiring specialized ventilation, fume hood controls, and precise environmental conditions.
Data Center Cooling
Precision cooling systems for data centers and server rooms requiring 24/7 reliability, precise temperature control, and redundant systems.
Industrial Process HVAC
Heavy-duty HVAC systems for manufacturing and industrial facilities requiring specialized ventilation and environmental controls.
HVAC Maintenance & Emergency Service
Proper maintenance is essential for optimal HVAC performance, energy efficiency, and equipment longevity. AJ Allen provides comprehensive maintenance programs and 24/7 emergency service to keep your systems running smoothly.
Preventive Maintenance Programs
Customized maintenance schedules designed to maximize equipment life, maintain efficiency, and prevent costly breakdowns.
- Regular filter replacement and cleaning
- Coil cleaning and inspection
- Belt and motor maintenance
- Refrigerant level checks and adjustments
- Control system calibration and testing
24/7 Emergency HVAC Service
Round-the-clock emergency service to minimize downtime and restore comfort to your facility as quickly as possible.
- Emergency repair and troubleshooting
- Rapid response service trucks
- Emergency parts inventory
- Temporary cooling and heating solutions
- System diagnostic and repair
Energy-Efficient HVAC Solutions
AJ Allen specializes in energy-efficient HVAC systems and upgrades that reduce operational costs while maintaining optimal comfort and performance.
High-Efficiency Equipment
Installation of ENERGY STAR certified equipment and high-efficiency systems that significantly reduce energy consumption and operating costs.
Smart Controls & Automation
Advanced control systems that optimize HVAC operation based on occupancy, outside conditions, and real-time energy pricing.
Utility Rebate Programs
Assistance with utility rebate programs and incentives for energy-efficient equipment upgrades and retrofits.
Energy Audits & Assessments
Comprehensive energy audits to identify opportunities for efficiency improvements and cost savings in your HVAC systems.
Optimize Your Commercial HVAC Systems
Let AJ Allen's HVAC experts design, install, or maintain the perfect climate control solution for your facility.