A new furnace brings consistent warmth, predictable monthly heating costs, and the peace of mind that your family stays comfortable through cold Pennsylvania winters. J&G Heating & Air Conditioning installs high-efficiency gas and electric furnaces from Heil, Burnham, and other trusted manufacturers—with NATE-certified technicians who understand Lancaster County’s heating season and deliver installation that performs.
When you’re investing in a new furnace, the contractor matters as much as the equipment. Our experience, manufacturer certifications, and family-owned service all add up to one thing: a furnace installation done right the first time, backed by people who’ll be here for tune-ups and future repairs when you need them.
J&G Heating & Air Conditioning installs furnaces throughout Lancaster County from our Conestoga headquarters. Each community receives the same precision installation workmanship, comprehensive commissioning, and responsive emergency support. Our service network spans the heart of Lancaster County, where we’ve spent nearly three decades installing and maintaining heating systems for thousands of families.
Every furnace installation we do follows the same proven process — designed to deliver right-sized equipment, professional workmanship, and a system that performs from day one. Tap any step below to see exactly what happens.
Installing a furnace starts with understanding your home’s heating needs. We walk through your home with you to review square footage, ceiling height, insulation, window placement, basement or crawlspace conditions, and the spaces that need heat. A furnace sized appropriately for your home will run efficiently without cycling excessively or running continuously.
We also evaluate your existing ductwork to confirm it’s sized appropriately for the new furnace’s airflow, check your electrical service to ensure adequate capacity for furnace controls and blower motors, and inspect your chimney or venting system (if applicable) to plan proper exhaust routing. We ask about your current comfort complaints—cold bedrooms, uneven temperatures, high heating bills—so the new furnace solves problems you’ve experienced.
Once we understand your heating needs, we recommend the exact furnace capacity and efficiency rating your home requires. Our primary brands are Heil and Burnham—both offer high-efficiency condensing furnaces with excellent warranties and robust parts availability across Lancaster County. We explain AFUE ratings (Annual Fuel Utilization Efficiency, the percentage of fuel burned that becomes usable heat), so you understand the long-term operating cost difference between a 95%-AFUE furnace and an older 80%-AFUE model.
We design the complete installation: where the furnace will sit in your basement, utility room, or attic; how gas lines will run; where the condensate drain will go (newer condensing furnaces extract moisture and require safe drainage); and how the exhaust vent will route. If any rebates or incentives apply to your project, we’ll discuss them at this time.
Furnace installation in Lancaster County requires gas and electrical permits. We pull all necessary permits, coordinate with local building authorities and utility companies, and ensure inspections are scheduled at the right time. We notify you of any special preparation—clearing access to the furnace installation area, ensuring outdoor gas line access, protecting furnishings from dust—so installation day runs smoothly.
Installation day begins with safe removal of your old furnace. We disconnect the gas supply at the meter or tank, remove all electrical connections, recover any refrigerant if cooling lines are integrated, and disconnect the ductwork. Old furnaces are haul away same-day through our recycling partners. We protect your basement or utility room—laying drop cloths, containing dust, clearing pathways—and inspect the installation area for any structural issues the new furnace must accommodate.
We position the new furnace in its designated location—basement, attic, or utility closet—ensuring adequate clearance for servicing and air intake as required by code. We connect all ductwork to the furnace’s supply and return plenums, sealing all joints and gaps with mastic sealant to prevent air leaks. Every duct connection is tested to confirm proper airflow and no leaks.
If ductwork needs upgrades to match the new furnace’s airflow capacity, we make those modifications before powering up the system. Undersized ducts create pressure drop, reduce heating efficiency, and cause temperature imbalances. We right-size everything.
We connect the new furnace to your home’s gas supply using properly-sized pipe and approved connections. All gas lines are pressure-tested to ensure no leaks—gas leaks are hazards and must be detected early. We install a new gas shutoff valve at the furnace and verify that the safety controls—low gas pressure switch, high limit switch, limit switch—are functioning correctly.
Gas combustion inside the furnace produces carbon monoxide (CO), which must be safely exhausted outside. We verify that the furnace’s draft safety controls operate correctly to ensure CO never backs up into your home.
Furnace electrical installation must meet local code and include proper circuit breakers, disconnect switches, wire sizing, and connections. We test all electrical connections for proper voltage and continuity, and verify that the thermostat communicates correctly with the furnace controls. We also install safety devices—limit switches that prevent overheating, rollout switches that detect flame rollout—and test their operation before powering up the system.
If your furnace uses a chimney, we inspect it for damage, blockages, or improper sizing and clean it thoroughly. If we’re installing a power-vent or direct-vent system, we run new venting pipes from the furnace to the exterior, ensuring proper slope and secure fastening. We test draft to confirm that furnace exhaust safely exits to the outside and does not back up into your home.
Before we leave, the furnace is powered up, cycled through heating mode, and tested for proper operation. We measure furnace output temperature, confirm the blower activates at the right time, verify the thermostat controls temperature accurately, and test all safety controls. We show you how to use the thermostat, explain filter changes, discuss seasonal maintenance, and walk you through the warranty so you understand coverage and exclusions.
You’ll receive complete documentation: furnace model number and serial number, warranty cards, installation completion certificate, gas and electrical inspection reports, and our emergency contact information. Any questions during your first heating season are answered by the technician who installed the system.
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.
A new furnace brings consistent warmth, predictable monthly heating costs, and the security of knowing your family stays comfortable through cold Pennsylvania winters. When you choose J&G Heating & Air Conditioning, you’re choosing a family-owned company that’s installed furnaces for thousands of Lancaster County neighbors over nearly three decades. We show up on time, stand behind our work, and care about your home’s heating as much as you do.
Our maintenance plans keep your new furnace running efficiently. After installation, join our maintenance plan for annual tune-ups, priority repairs, and discounts on service calls. Explore our maintenance plans to protect your investment.
Keep your new system running efficiently with seasonal checkups before each heating season.
Furnace MaintenancePair your new furnace with a matching air conditioning system for year-round comfort.
AC InstallationConsider a heat pump if you want heating and cooling in one efficient system.
Heat Pump InstallationAdd UV lights or whole-home air filters to your new furnace for cleaner, healthier air.
Indoor Air Quality SolutionsFlexible payment plans make installation affordable across 24–60 months.
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