Commercial HVAC Installers of Houston
Service Category

Rooftop Unit Replacement

Crane-lift replacement of packaged RTUs for retail and office buildings. Specialized execution for Houston's demanding commercial environments.

Rooftop Unit Replacement

Commercial rooftop units in Houston, TX provide comprehensive HVAC solutions for buildings requiring efficient, weather-protected heating and cooling systems. Our licensed and insured contractors specialize in the installation, maintenance, and replacement of rooftop HVAC units for office buildings, retail centers, industrial facilities, and multi-tenant properties throughout the Houston metropolitan area. These self-contained units combine all major HVAC components in a single weather-resistant package designed for rooftop installation.

Houston's climate demands robust rooftop units capable of handling high cooling loads during summer months and occasional heating requirements during winter periods. Our commercial rooftop unit services address these needs by providing systems with high SEER ratings, advanced controls, and corrosion-resistant construction suitable for the region's coastal environment. We work with premium manufacturers including Carrier, Trane, Lennox, and York to ensure reliable performance and long-term durability.

Typical rooftop unit projects in Houston include new installations, equipment replacements, preventive maintenance, emergency repairs, and system upgrades. Units range from 3-ton systems for small commercial spaces to 100+ ton units serving large industrial facilities. Each installation includes proper roof curb construction, electrical service, gas piping (for heating models), and integration with building automation systems.

For office buildings in downtown Houston, rooftop units provide efficient climate control with minimal interior space requirements and easy rooftop access for maintenance. Retail properties benefit from quiet operation during business hours and reliable performance that supports customer comfort. Industrial warehouses require robust units capable of maintaining consistent temperatures for equipment operation and employee productivity.

The installation process typically spans 1-3 weeks depending on unit size and building requirements. This includes structural assessment of roof capacity, equipment delivery coordination, electrical service upgrades, and comprehensive commissioning. We provide detailed project timelines and coordinate with building management teams to minimize business disruption during installation.

Energy efficiency is a key consideration in our rooftop unit selections, with modern units achieving SEER ratings of 14-18 and IEER ratings up to 16. These high-efficiency systems reduce operating costs while qualifying for utility rebates and contributing to green building certifications. Advanced features like variable speed compressors and smart controls optimize performance based on actual building loads.

Building types we serve include single-story retail centers, multi-story office complexes, industrial warehouses, healthcare facilities, educational institutions, and hospitality properties. Each rooftop unit installation is customized to meet specific building requirements, including proper sizing calculations, noise attenuation for occupied spaces, and compliance with local building codes.

Our rooftop unit services include comprehensive maintenance programs, emergency response capabilities, and detailed documentation for building owners. We provide operation manuals, maintenance schedules, and performance data to support informed decision-making. Systems are designed for easy service access with modular components that reduce maintenance costs and downtime.

Safety and compliance are paramount, with all installations meeting National Electrical Code requirements, local building codes, and manufacturer specifications. We coordinate with structural engineers for roof load calculations, electrical inspectors for service upgrades, and local authorities for required permits.

Reliability and redundancy are built into our rooftop unit designs, with options for multiple units serving the same space to ensure continuous operation. This approach protects against single-point failures and provides backup capacity during peak demand periods in Houston's challenging climate.

Our Process

Commercial rooftop unit services in Houston, TX begin with a comprehensive assessment of your building's HVAC requirements, including load calculations and roof structural evaluation. Our licensed contractors evaluate existing systems, electrical capacity, roof conditions, and building usage to determine optimal rooftop unit solutions for your specific property.

Following the assessment, we provide detailed system recommendations with equipment specifications, installation plans, and cost estimates. This includes roof curb design, electrical service requirements, gas line specifications (for heating units), and coordination with local permitting authorities. Most rooftop unit projects require 1-2 weeks for permitting and preparation.

The installation phase includes roof curb construction or verification, equipment delivery and rigging, electrical connections, fuel line installation (for gas units), and system integration. Our technicians follow manufacturer specifications and local building codes, ensuring safe and compliant installations. We coordinate with property management teams to schedule work during off-hours and minimize business disruption.

Upon completion, we perform comprehensive commissioning including system startup, performance testing, control system programming, and safety verification. This includes measurement of heating/cooling capacity, electrical consumption, airflow rates, and noise levels. We provide detailed documentation including as-built drawings, operation manuals, and maintenance schedules.

Post-installation support includes staff training for system operation and basic maintenance procedures, 30-day performance verification, and establishment of preventive maintenance agreements. Property owners receive direct communication throughout the project with regular updates and the ability to contact project managers directly for any concerns.

Key Benefits

Commercial rooftop units in Houston, TX deliver substantial operational, financial, and performance benefits for property owners and facility managers. These self-contained systems provide efficient, reliable climate control with minimal building penetration and easy maintenance access.

Energy efficiency improvements are achieved through modern rooftop units with high SEER/SEER2 ratings and advanced controls that optimize performance based on actual building loads. In Houston's hot climate, efficient units can reduce cooling costs by 30-50% compared to older systems while maintaining superior comfort.

Reliable performance ensures consistent heating and cooling throughout commercial spaces, critical for businesses where temperature fluctuations could impact operations, product quality, or employee comfort. Modern rooftop units with redundant components minimize the risk of system failures during critical periods.

Space efficiency is maximized through rooftop installation that doesn't require valuable interior space for mechanical rooms. This allows for more flexible building layouts and potentially higher rental income from additional usable square footage.

Easy maintenance access results from rooftop location with wide service doors, modular components, and clear access paths. This reduces maintenance costs and downtime while allowing for faster repairs and component replacements.

Weather protection is built into rooftop unit construction with corrosion-resistant materials, watertight enclosures, and elevated installation that protects equipment from flooding and ground-level contaminants. This is especially valuable in Houston's coastal climate with occasional storm events.

Scalable capacity allows buildings to start with appropriately sized units and add capacity as needs grow. Multiple unit installations provide redundancy and the ability to match capacity to changing occupancy patterns or building expansions.

Reduced installation complexity comes from factory-assembled units that require only utility connections and minimal ductwork modifications. This reduces installation time and costs compared to built-up systems while maintaining high quality and performance standards.

Advanced controls and monitoring capabilities provide detailed performance data and remote access for facility managers. Smart systems can alert maintenance teams to potential issues before they become problems, supporting preventive maintenance approaches.

What's Included

Comprehensive load calculations and system design per ACCA standards
Equipment selection from leading rooftop unit manufacturers
Roof curb design and installation or verification
Electrical service upgrades and connections
Gas line installation and pressure testing for heating units
System commissioning and performance verification
Control system integration with building automation
Sound attenuation for noise-sensitive applications
Staff training on system operation and maintenance
Detailed as-built documentation and operation manuals
Warranty on equipment and installation workmanship
30-day follow-up inspection and system optimization
Permitting coordination with City of Houston authorities
Roof structural assessment and load calculations
Emergency technical support for 12 months post-installation
Preventive maintenance program setup

Example Projects

Example of the type of engagement we can handle
Service Type
Commercial Rooftop Units
Location
Houston, TX
Project Scope

Installation of two 30-ton high-efficiency rooftop units serving 45,000 sq ft medical office building with redundant capacity

Client Situation

Medical office building requiring reliable climate control for patient comfort and equipment operation with aging rooftop units

Our Approach

Conducted comprehensive load analysis, designed dual-unit system with redundancy, coordinated installation during off-hours with minimal patient disruption

Expected Outcome

Achieved 35% energy savings with redundant capacity ensuring continuous operation for critical healthcare services

Contact us to discuss your commercial rooftop unit needs in Houston, TX. We can share references upon request.

Compliance & Standards

Educational content only. Not engineering, legal, or construction advice.

Frequently Asked Questions

How do I know if my building needs a new rooftop unit in Houston, TX?

Signs include age over 15 years, frequent repairs, high energy bills, poor temperature control, unusual noises, or visible corrosion. In Houston, TX rooftop units face accelerated wear from heat, humidity, and occasional storms.

What size rooftop unit does my Houston commercial building need?

Rooftop unit sizing in Houston requires Manual J load calculations considering building size, insulation, occupancy, and local climate data. Units typically range from 3-100+ tons, with proper sizing critical for efficiency and cost savings.

Do rooftop unit installations require permits in Houston, TX?

Yes, commercial rooftop unit installations in Houston require permits from the City of Houston Department of Building Official for electrical work, roof modifications, and equipment installation. We handle all permitting and ensure compliance.

How long does rooftop unit installation take in Houston commercial buildings?

Commercial rooftop unit installation in Houston typically takes 1-3 weeks including permitting, roof preparation, equipment delivery, and installation. Timeline depends on unit size and building access requirements.

Can rooftop units be installed during business hours in Houston?

We prefer off-hours installation to minimize disruption, but can work during business hours with proper coordination. Rooftop work often has minimal impact on building occupants compared to interior installations.

What warranties do you provide on commercial rooftop units in Houston?

We provide comprehensive warranties including 10-year equipment warranty from manufacturers, 5-year installation workmanship warranty, and 1-year service warranty. All warranties are documented and transferable to property owners.

Do rooftop unit installations qualify for energy rebates in Houston?

Yes, high-efficiency rooftop units in Houston may qualify for rebates through CenterPoint Energy, the Texas Reliability Entity, and federal programs. We help identify eligible systems and assist with rebate applications.

How often should commercial rooftop units be serviced in Houston's climate?

Commercial rooftop units in Houston should receive quarterly preventive maintenance including filter changes, coil cleaning, and performance checks. Annual comprehensive tune-ups are recommended for optimal reliability.

Can you replace just the internal components of my rooftop unit?

Yes, we offer component replacement services for rooftop units including compressors, motors, controls, and heat exchangers. This cost-effective approach can extend unit life by 5-10 years in many cases.

What brands of rooftop units do you install in Houston?

We install rooftop units from leading manufacturers including Carrier, Trane, Lennox, York, Goodman, and Rheem. Selection depends on building requirements, efficiency needs, and budget considerations.

How much do commercial rooftop units cost in Houston, TX?

Commercial rooftop unit costs in Houston range from $8,000-$75,000+ depending on capacity, efficiency rating, and installation complexity. We provide detailed proposals with ROI analysis and expected energy savings.

Can rooftop units handle Houston's extreme weather conditions?

Yes, modern rooftop units are designed for harsh climates with corrosion-resistant construction, high wind resistance, and humidity protection. Units are tested for Houston's temperature extremes and occasional storm events.

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Typical Project Timeline

Consultation & Load Analysis

Week 1-2

Site survey, load calc, and equipment selection.

Proposal & Permitting

Week 3

Detailed quote, contract signing, and city permit filing.

Mobilization & Install

Week 4-6

Equipment delivery, crane lift, installation, and ductwork.

Commissioning

Week 7

System startup, balancing, testing, and handover.

Efficiency Standards (2025)

System TypeMin. SEER2 / IEERTarget
Split System (<65k BTU)14.3 SEER216+ SEER2
Rooftop Unit (Packaged)14.8 IEER18+ IEER
VRF / VRV Systems18.0 IEER22+ IEER
Water-Cooled Chiller0.58 kW/ton0.52 kW/ton

Higher efficiency ratings often qualify for CenterPoint Energy rebates and tax incentives.