Installing a commercial rooftop unit is a major investment in your facility’s comfort and operational continuity. J&G Heating & Air Conditioning handles every aspect of RTU installation for Lancaster-area businesses — from sizing and specification to roof preparation, electrical integration, ductwork design, startup, and staff training. We work with leading RTU manufacturers (Trane, Lennox, Carrier, York, Daikin, Goodman) and ensure every installation meets code, performance expectations, and your business timeline.
When you’re investing in a new commercial rooftop unit, the contractor matters as much as the equipment. Our experience with commercial HVAC systems, manufacturer certifications, and business-focused service all add up to one thing: an RTU installation done right the first time, backed by people who understand your operational needs and will be here for future service when you need it.
J&G Heating & Air Conditioning serves commercial facilities across five communities in Lancaster County from our main office in Conestoga, PA. Each area receives the same quality installation workmanship, same-day emergency support if problems arise, and the same commitment to properly sized equipment and professional service.
Every commercial RTU installation we do follows the same proven process — designed to deliver properly sized equipment, professional workmanship, and a system that performs reliably from day one. Tap any phase below to see exactly what happens.
We begin with a comprehensive facility tour and current system evaluation. Our commercial HVAC specialists walk the building with you to review square footage, usage type (office, retail, warehouse, etc.), insulation and envelope condition, window/door placement, internal heat loads from equipment and occupancy, and operational requirements. We also evaluate existing ductwork systems and electrical service capacity to ensure proper integration.
During this visit, we discuss your operational requirements, budget considerations, any zones that need special attention, and your typical occupancy patterns. This thorough assessment ensures we recommend equipment that fits your facility’s specific needs.
Based on our assessment, we create a detailed system design with exact RTU specifications, installation plan, and comprehensive proposal. We recommend the optimal RTU brand and model, heating type (gas, electric, heat pump, or auxiliary heat), cooling capacity and seasonal efficiency ratings, and control system options. Our proposal includes equipment specifications, installation cost breakdown, project timeline, and available financing options.
We present multiple options when appropriate, explaining the benefits and trade-offs of different approaches. This allows you to make an informed decision that balances performance, efficiency, and budget considerations.
Once you approve the proposal, we handle all permitting requirements and project preparation. We obtain necessary building and electrical permits, schedule required city inspections, and coordinate with your maintenance team for optimal installation timing. We also prepare the roof location, order equipment and materials, and schedule our installation team around your business operations to minimize disruption.
For occupied buildings, we work closely with your team to schedule installation during off-hours, weekends, or planned downtime to maintain your business continuity.
Our certified installation team arrives with all necessary tools, equipment, and materials. We begin by safely removing old equipment if replacing an existing system, then prepare the roof mounting location and position the new RTU unit. The technical installation includes making all ductwork connections, running refrigerant lines with proper insulation and securing, installing electrical service and control wiring, setting up thermostat and building controls, and testing all gas/electric connections and safety shutoffs.
We take great care to protect your facility during installation, using proper safety protocols and ensuring all work areas are clean and secure. Our team coordinates closely to complete installation efficiently while maintaining the highest quality standards.
Before project completion, we perform comprehensive system commissioning to ensure optimal performance. We run full load tests to verify capacity, calibrate thermostat and control systems, check refrigerant charge and adjust if needed, verify all safety controls operate properly, and test emergency shutdown systems. We also balance airflow across all zones and train your staff on system operation, thermostat use, and basic maintenance procedures.
We provide complete documentation including all manuals, warranties, service records, and maintenance schedules. We also schedule your first maintenance visit to ensure continued optimal performance.
We believe every business in Lancaster County deserves access to reliable commercial heating and cooling — regardless of budget constraints. That’s why J&G Heating & Air Conditioning partners with trusted financing providers to offer flexible payment plans that fit your business financial situation. Whether you’re replacing an aging rooftop unit, upgrading to a high-efficiency RTU system, or investing in comprehensive commercial HVAC improvements, financing allows you to enjoy the operational benefits today while spreading payments over time.
Our team will walk you through every available option during your free consultation, helping you understand monthly payment amounts, interest rates, and approval requirements. We want the financial side of your project to feel just as comfortable as the climate in your facility.
As an authorized Wells Fargo financing partner, J&G Heating & Air Conditioning offers a range of commercial credit options to help you manage the cost of your new commercial HVAC system. With competitive rates and flexible terms, qualifying businesses can enjoy convenient monthly payments that fit comfortably into their operational budget.
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Through our partnership with PowerPay, we provide another trusted financing pathway for Lancaster County businesses ready to upgrade their facility comfort systems. PowerPay’s streamlined application process and flexible repayment plans make it easy to get started on your commercial project without delay.
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GoodLeap offers flexible financing options and competitive rates for commercial projects, making it easy for businesses to invest in high-efficiency RTU systems and commercial HVAC equipment. With a simple application process and a variety of repayment terms, upgrading your facility comfort doesn’t have to mean a large upfront cost.
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When you join one of our commercial maintenance programs, you’ll receive scheduled maintenance performed by our NATE-certified technicians who understand your RTU system inside and out. We’ll clean critical components, check refrigerant levels, inspect electrical connections, test safety controls, and ensure everything is operating as it should for optimal business comfort.
Regular commercial maintenance doesn’t just prevent breakdowns — it also helps lower your energy bills and protects your manufacturer warranty coverage. It’s one of the smartest investments you can make in your facility’s comfort and your business’s operational continuity.
Whether you’re replacing an aging rooftop unit or installing HVAC in a new building, J&G Heating & Air Conditioning delivers expert design, quality installation, and ongoing support. We understand commercial HVAC demands — reliability, efficiency, and minimal business disruption. Our NATE-certified team has installed hundreds of RTUs across Lancaster County and backs every install with comprehensive maintenance to keep your system running strong.
Ready to get started? We help Lancaster County businesses take advantage of utility and equipment rebates that can lower your out-of-pocket cost on a new RTU installation. Browse available commercial rebates. No hidden fees, no pressure — just honest advice and professional service tailored to your business needs.
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