Trusted local HVAC experts serving Lancaster County since 1997
For nearly three decades, J&G Heating & Air Conditioning has been the trusted choice for homeowners and businesses across Lancaster, Denver, Ephrata, Columbia, and Litiz, Pennsylvania. Whether you need emergency furnace repair, a new heat pump installation, or commercial rooftop equipment maintenance, our NATE-certified technicians bring deep expertise, local accountability, and genuine care to every job.
We handle it all—air conditioning, heat pumps, furnaces, boilers, tankless and tank water heaters, indoor air quality, generators, and commercial HVAC systems. From residential tune-ups to complex commercial installations, we’re here to keep your home or business comfortable, safe, and efficient.
When you’re investing in your home’s comfort and safety, the contractor matters as much as the equipment. Our experience, manufacturer certifications, and family-owned service all add up to one thing: HVAC service done right the first time, backed by people who’ll be here for maintenance and future repairs when you need them.
J&G Heating & Air Conditioning serves five communities across Lancaster County from our main office in Conestoga, PA. Each area receives the same quality service workmanship, same-day emergency support if problems arise, and the same commitment to professional service.
Not sure if we serve your area? Contact us — we often can help beyond our listed towns, and we’re always happy to discuss your needs.
From single-unit repairs to complete system replacement, we diagnose and fix air conditioning problems fast. Summer heat doesn’t wait, and neither do we. Our AC repair service gets you comfortable again, our maintenance keeps your system running at peak efficiency, and our installation services help you choose the right equipment for your home’s size and budget.
Heat pumps deliver year-round comfort with lower energy costs than traditional systems. They heat in winter and cool in summer, all with greater efficiency. Whether you need heat pump repair to restore a failing system, seasonal maintenance to keep it operating smoothly, or are ready for a new heat pump installation, we handle every step with expertise and care.
Ductless mini-splits offer flexible, efficient zoning for additions, basements, or whole-home comfort without requiring extensive ductwork. They’re ideal for homes where traditional AC isn’t practical. We provide mini-split repair when something goes wrong, maintenance to extend equipment life, and professional installation that ensures proper refrigerant charge and airflow balance.
A reliable furnace is non-negotiable in Pennsylvania winters. When temperatures drop and your heating system fails, you need immediate help. Our furnace repair technicians diagnose problems quickly, our maintenance program catches issues before they become emergencies, and our installation services ensure your new system is properly sized and positioned for years of dependable operation.
Boilers demand specialized knowledge and technique. Unlike forced-air furnaces, boilers heat water or steam for delivery through pipes and radiators—a completely different methodology. Our technicians are experienced in boiler repair for steam and hot-water systems, preventive maintenance to avoid winter failures, and new system installation that respects your home’s existing radiator system or allows for upgrades.
For homeowners seeking maximum efficiency, geothermal systems are unbeatable. They tap into ground-source heat that remains stable year-round, delivering exceptional performance in Pennsylvania’s variable climate. We offer geothermal repair by technicians trained on these sophisticated systems, maintenance plans to keep them performing optimally, and complete installation services including site assessment and permitting guidance.
Cold showers aren’t acceptable, and running out of hot water is a comfort crisis. We install, repair, and maintain both tankless water heaters—which deliver hot water on demand with excellent efficiency—and traditional tank heaters that offer reliable, familiar performance at a lower upfront cost. Our technicians help you choose the right technology for your household’s hot water demands.
What you breathe matters just as much as the temperature you feel. We evaluate air quality issues and recommend air filtration systems that capture particles, UV lights that neutralize biological contaminants, and humidification/dehumidification solutions tailored to your home’s needs. Poor indoor air quality can aggravate allergies and asthma—our solutions give you cleaner, healthier air.
Power outages leave you vulnerable—no heating, no cooling, no refrigeration, no medical equipment. Our standby generator services ensure your home stays powered during emergencies. Automatic systems detect an outage and switch on seamlessly, powering your essential circuits while utility crews restore service.
Pennsylvania businesses depend on reliable climate control for employee comfort, customer satisfaction, and equipment protection. We specialize in commercial HVAC maintenance, rooftop unit (RTU) repair, commercial boiler service, and VRF (variable refrigerant flow) systems. Our commercial team understands the demands of retail, offices, restaurants, and manufacturing facilities.
We believe every homeowner in Lancaster County deserves access to reliable 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 financial situation. Whether you’re replacing an aging boiler, upgrading to a high-efficiency air conditioning system, installing a high-efficiency heat pump, 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 home.
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 heating or cooling system. With competitive rates and flexible terms, qualifying homeowners can enjoy convenient monthly payments that fit comfortably into their household budget.
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Through our partnership with PowerPay, we provide another trusted financing pathway for Lancaster County homeowners ready to upgrade their home comfort. 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 homeowners to invest in high-efficiency heating, cooling, and generator systems. With a simple application process and a variety of repayment terms, upgrading your home comfort doesn’t have to mean a large upfront cost.
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When you join one of our maintenance programs, you’ll receive scheduled tune-ups performed by our NATE-certified technicians who know your 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.
Regular 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 home’s comfort and your family’s safety.
Every homeowner and business deserves reliable, honest service. We start every job with a thorough diagnosis, explain our findings in plain language, and provide transparent pricing before we turn a wrench. We show up on time, respect your home, and leave it cleaner than we found it.
Our family’s reputation depends on your satisfaction. That’s why we back every repair with our guarantee, offer flexible scheduling, and keep our emergency line open during emergency hours (Monday–Sunday, 6:00 AM–10:00 PM).
Ready to experience the difference that local expertise, genuine care, and technical excellence make?
About J&G Heating & Air Conditioning — Our story, values, and commitment to Pennsylvania homeowners.
Meet Our Technicians — The licensed, certified professionals who service your home.
See Our Latest Offers — Save on repairs, maintenance plans, and equipment upgrades.
Financing Options — Spread the cost of a new system across monthly payments with our trusted partners.
Join Our Maintenance Program — Prevent breakdowns, save on service calls, and enjoy priority support.
Whether you need emergency repair, a scheduled maintenance visit, or a complete system replacement, J&G Heating & Air Conditioning is ready to help. Our family-owned business has been earning trust in Lancaster County since 1997. Every technician is NATE certified, every job is backed by our guarantee, and every customer gets honest, transparent service.
Don’t wait for an emergency. Schedule routine maintenance today and extend the life of your equipment while lowering your utility bills. Or call us right now if something’s broken and needs immediate attention.
View Financing Options — Installation costs spread over manageable monthly payments with Wells Fargo, Power Pay, or Goodleap.
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