Reliable heating, cooling, and air quality for commercial properties from J&G Heating & Air Conditioning.
Commercial buildings—office spaces, retail, warehouses, light manufacturing—demand different HVAC approaches than homes. Commercial equipment runs harder and longer; downtime costs money; codes and permits are stricter; maintenance needs differ. At J&G Heating & Air Conditioning, we’ve been serving commercial clients across Lancaster County for 29 years. We install and maintain rooftop units (RTUs), variable refrigerant flow (VRF) systems, custom ductwork solutions, and commercial boilers for multi-building properties.
When you’re investing in commercial HVAC systems, the contractor matters as much as the equipment. Our experience with complex commercial systems, manufacturer certifications, and family-owned service all add up to one thing: commercial HVAC service done right the first time, backed by people who’ll be here for maintenance and future repairs when you need them.
Whether you need emergency repair, planned maintenance, or a new system design, call us. We’ll assess your building’s needs and provide a solution scaled to your operation.
J&G Heating & Air Conditioning serves five communities across Lancaster County from our main office in Conestoga, PA. Each area receives the same quality commercial HVAC workmanship, same-day emergency support if problems arise, and the same commitment to properly sized equipment and professional service.
Every commercial HVAC project we handle follows the same proven process — designed to deliver properly sized equipment, professional workmanship, and systems that perform from day one. Tap any step below to see exactly what happens.
We start with a thorough walkthrough of your facility. We’ll identify all HVAC equipment—rooftop units, split systems, boilers, air handlers—note age and condition, review maintenance logs, and understand your building’s layout and use. For multi-building properties, we assess the entire portfolio. We’ll ask about comfort complaints, energy cost concerns, and upcoming capital plans. This assessment informs our service strategy.
For buildings without formal maintenance plans, we design one. Frequency depends on system size, age, and usage. A small office might need quarterly filter changes and annual inspections. A large warehouse with rooftop units might need monthly monitoring and quarterly preventive maintenance. We’ll create a schedule that prevents failures while optimizing cost and operational efficiency.
When a commercial unit fails, we dispatch immediately. Our technician arrives with diagnostic equipment, parts inventory, and the experience to identify and repair issues quickly. For critical outages, we’ll coordinate temporary cooling or heating (portable units, fan solutions) while permanent repair is underway. We communicate status updates to you throughout.
Before heating season (fall) and cooling season (spring), we perform seasonal commissioning: we test all equipment under load, verify thermostat calibration, check ductwork balance, and optimize settings for comfort and energy efficiency. This prevents seasonal failures and catches minor issues before they become emergencies.
Every service visit is documented: what was inspected, what was cleaned or repaired, what parts were used, and what’s recommended next. We maintain detailed service logs for your facility. If equipment is under warranty, we’ll handle warranty claims on your behalf. We also help you understand warranty terms and coverage.
If equipment is aging or your building’s needs are changing, we’ll design and install replacement systems. For rooftop units, we coordinate removal of old equipment, installation of new units, all ductwork integration, and safety testing. For boiler replacements or VRF system installations, we manage the full project—from permitting through commissioning.
Commercial HVAC is not “install and forget.” We monitor equipment performance, respond to occupant comfort complaints, and adjust systems seasonally. For larger clients, we may offer continuous remote monitoring and alerts—notifying us of potential issues before they become failures.
We believe every business in Lancaster County deserves access to reliable commercial heating and cooling — regardless of budget. 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 aging rooftop units, upgrading to a high-efficiency VRF system, installing commercial boilers, or investing in a new generator system, financing allows you to enjoy the comfort you need today while spreading payments over time.
Our team will walk you through every available option during your free estimate, 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 temperature in your building.
As an authorized Wells Fargo financing partner, J&G Heating & Air Conditioning offers a range of credit options to help you manage the cost of your new commercial heating or cooling system. With competitive rates and flexible terms, qualifying businesses can enjoy convenient monthly payments that fit comfortably into their operating budget.
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Through our partnership with PowerPay, we provide another trusted financing pathway for Lancaster County businesses ready to upgrade their commercial HVAC systems. PowerPay’s streamlined application process and flexible repayment plans make it easy to get started on your project without delay.
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GoodLeap offers flexible financing options and competitive rates, making it easy for businesses to invest in high-efficiency commercial heating, cooling, and generator systems. With a simple application process and a variety of repayment terms, upgrading your commercial 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 tune-ups performed by our NATE-certified technicians who know your systems 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.
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 building’s comfort and your business’s continuity.
Commercial HVAC isn’t just a bigger version of residential systems—it requires specialized knowledge, faster response times, and deep understanding of building codes and complex equipment. J&G Heating & Air Conditioning has served Lancaster County businesses for 29 years. We know how to keep your building comfortable, code-compliant, and energy-efficient.
Whether you need emergency repair, seasonal maintenance, system upgrades, or new equipment design, we’re your partner. Call us to discuss your building’s needs or to establish a formal maintenance program. Our commercial maintenance plans prevent failures, optimize energy costs, and extend equipment life. Proactive maintenance pays for itself.
Whole-building air filtration and UV systems for healthier indoor environments, especially important in offices and retail.
Indoor Air Quality SolutionsBackup power for critical HVAC systems ensures buildings stay operational during power outages.
Whole-Home Generator ServicesCommercial hot water systems for restrooms, cafeterias, and operations.
Tank Water Heater InstallationCommercial heating solutions from small buildings to large industrial spaces.
Furnace InstallationSteam and hot-water boilers for comprehensive heating across multi-building properties.
Boiler Installation
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