Whole Home Generators for Pennsylvania Homes

A power outage lasting a few hours is an inconvenience. A power outage lasting days—due to storms, grid failures, or infrastructure issues—becomes a crisis: no heat in winter, no cooling in summer, no refrigeration, no well pump if you’re on rural water. For families in Lancaster County, a whole-home generator is the difference between a brief inconvenience and a catastrophe. At J&G Heating & Air Conditioning, we’ve been installing Generac backup generators since the early 2000s. Our generators automatically sense a power loss, start within seconds, and seamlessly power your entire home—heating, cooling, appliances, and everything else.

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Why Choose Us

Why Lancaster County Families Choose J&G Heating & Air Conditioning for Whole Home Generators

When you’re investing in a whole-home generator, the contractor matters as much as the equipment. Our experience, manufacturer certifications, and family-owned service all add up to one thing: a generator installation done right the first time, backed by people who’ll be here for maintenance and future repairs when you need them.

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What Sets Our Generator Installation Apart?
We’re an authorized Generac Elite Dealer, which means we have access to Generac’s full product lineup, priority support, and factory training on installation and maintenance. Generac backs our work. Your generator comes with legitimate manufacturer warranty and the assurance that we know what we’re doing.
Portable generators require you to be home, drag them out, run a cord into your house (poorly), and manually start them. A whole-home generator detects a power loss within 10 seconds, automatically starts, switches the home’s power source, and runs indefinitely while utility power is out. When power returns, it automatically switches back and shuts down. Zero effort from you.
Whole-home generators power everything: your furnace or heat pump, air conditioning, refrigerator, sump pump, well pump, garage door opener, security system, and lights. Portable generators force you to choose which devices to power—and you always forget something important. A whole-home system never makes you choose.
Pennsylvania experiences ice storms, thunderstorms, and occasional hurricanes. Winter outages knock out heating; summer outages knock out cooling. Rural families relying on well pumps or septic systems face additional urgency. A generator eliminates this vulnerability. Your home stays heated, cooled, and operational no matter what happens outside.
Whole-home generators require proper electrical connections, gas line runs, grounding, and permit compliance. We handle all of it—from running natural gas or propane lines from your meter, to electrical integration, to submitting permit applications and scheduling inspections. You don’t have to navigate building codes or utility requirements.
A generator sitting idle for months needs regular exercise and maintenance. We offer annual maintenance visits: we run your generator under load, change the oil, inspect the engine and fuel lines, and confirm automatic switching works correctly. If problems occur, we respond quickly because generator failures often happen during emergencies when you need them most.
Our Service Areas

Generator Installation Service Areas in Pennsylvania

J&G Heating & Air Conditioning serves five communities across 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 right-sized equipment and professional service.

Communities We Serve:
Full-service generator installation, maintenance, and emergency repair. Our primary service area — same-day emergency service during posted emergency hours. Quick scheduling for estimates and installations. More about Lancaster generator service →
Generator installation, maintenance, and repair service. Located just 10 minutes east of our main office, enabling fastest response times in the county. Scheduling based on your preference, with emergency calls prioritized. More about Denver generator service →
Complete whole-home generator installation and seasonal maintenance service. Northeast of Lancaster, covered by our maintenance and emergency response teams. Scheduling based on your preference. More about Ephrata generator service →
Professional generator installation with comprehensive post-service follow-up. South of Lancaster on Route 30, convenient scheduling from our central location. We service and maintain systems we’ve installed there. More about Columbia generator service →
Expert whole-home generator installation and seasonal maintenance service. North-central Lancaster County, served by our most experienced technicians. Community-focused approach with the same technician handling follow-up maintenance when possible. More about Lititz generator service →
Our Process

How J&G Heating & Air Conditioning Installs Your Whole Home Generator

Every whole-home generator 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.

We determine how much power your home needs by analyzing your electrical panel, counting major appliances, and discussing your priorities. A typical family home needs 10–20 kW; larger homes or those with electric heating may need 20–30 kW or more. We’ll ask about your most essential loads (furnace, water heater, refrigerator, sump pump, well pump) and discuss what a generator can realistically power. Gas-powered generators can’t run everything simultaneously in very large homes without being oversized and expensive.

  • Review your electrical panel and load profile
  • Count major appliances and their power requirements
  • Discuss seasonal power needs (heating vs. cooling priorities)
  • Assess fuel availability (natural gas vs. propane)
  • Recommend appropriate generator size and model
  • Provide written estimate with warranty details

For natural gas generators, we verify your gas line size and pressure can supply the generator without affecting other appliances. For propane systems, we assess tank location, size, and whether a new tank is needed. If your current gas meter is undersized for a generator, we’ll coordinate with the utility to upgrade it. All work must meet code and utility requirements.

  • Inspect existing natural gas line size and pressure
  • Verify gas meter capacity for generator demand
  • Assess propane tank size and location (if applicable)
  • Identify any utility coordination needed
  • Plan fuel line routing from meter to generator location
  • Confirm all work meets code and utility standards

The generator needs a level, accessible location outdoors—typically on a concrete pad beside your home. We’ll choose a spot that’s close to your electrical panel (shorter wire runs), close to the gas meter (shorter fuel lines), and away from windows and doors (noise and exhaust direction). The pad is poured or prepared, and the generator is positioned. It must be secured against movement.

  • Select optimal location based on electrical, gas, and noise considerations
  • Prepare concrete pad or foundation
  • Position generator on pad with proper clearance
  • Secure generator against movement or theft
  • Ensure exhaust direction away from living spaces and neighbors
  • Verify access for future maintenance

This is the critical step. A transfer switch installed next to your electrical panel senses when utility power fails and automatically switches all power to the generator. We run a heavy-gauge electrical cable from the generator to the transfer switch, then integrate it into your panel. All work is code-compliant and inspected by local authorities. We’ll also install a dedicated electrical disconnect switch near the generator for safety.

  • Install automatic transfer switch next to electrical panel
  • Run electrical cable from generator to transfer switch
  • Integrate generator power into electrical panel
  • Install safety disconnect switch near generator
  • Ground the generator and all electrical connections
  • Test transfer switch operation and switching speed
  • Submit electrical work for municipal inspection

For natural gas, we run copper line from your meter to the generator, following code requirements for support and protection. For propane, we run proper propane line from your tank to the generator. All connections use appropriate fittings and are tested for leaks. A pressure regulator ensures the generator receives fuel at the correct pressure. Gas line work is either done by us or coordinated with a licensed gas contractor.

  • Run fuel line from meter/tank to generator location
  • Support line with proper straps and protections
  • Install pressure regulator at generator inlet
  • Test all fuel connections for leaks
  • Coordinate with gas utility if needed (for natural gas)
  • Verify fuel pressure at generator
  • Document all fuel line specifications

Once electrical and fuel connections are complete, we start the generator and load-test it. We confirm automatic switching works—the transfer switch detects the loss of utility power, starts the generator, and switches all power to the generator within 10 seconds. We verify that sensitive loads (refrigerator, sump pump, furnace) restart smoothly. Then we verify the reverse: when utility power is restored, the generator detects it, switches power back, and safely shuts down.

  • Start generator and verify engine operation
  • Test automatic transfer switch operation under simulated power loss
  • Load generator with household loads and confirm performance
  • Verify automatic shutdown when utility power returns
  • Check all backup systems (furnace start-up, well pump restart)
  • Test multiple switching cycles to confirm reliability
  • Document all test results and timings

You’ll receive a complete walkthrough: how the system works, what to expect during a power outage, maintenance intervals, and what to check regularly. We’ll discuss fuel management (propane tanks should never empty; natural gas needs occasional checks), oil changes, and when to call us. Most importantly, we’ll establish a regular maintenance schedule—annually for most generators, more often in high-use regions.

  • Explain automatic operation and what happens during outages
  • Discuss fuel management and tank monitoring
  • Review maintenance checklist and intervals
  • Establish annual maintenance visit schedule
  • Provide contact info for emergency service
  • Register warranty with Generac
  • Leave all documentation and operator manuals

We Service all of the Industries Top Equipment and Install these Trusted Brands

Heil heating & cooling equipment
Fujitsu mini-split & VRF systems
Generac whole-home generators
AprilAire indoor air quality
Bradford White water heaters
New Yorker boilers
U.S. Boiler Company residential boilers

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Flexible Financing

Make Your Generator Installation Affordable with Flexible Financing Options

We believe every homeowner in Lancaster County deserves access to reliable backup power — 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 installing a whole-home generator for the first time or upgrading to a larger capacity system, financing allows you to enjoy the protection 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 secure as the power protection in your home.

What Are the Benefits of Financing?
Keep your emergency fund intact while still investing in a high-quality generator system. Financing lets you upgrade your home’s backup power without depleting your savings account, giving you financial flexibility and peace of mind.
Don’t wait for your next paycheck or tax return. With financing in place, you can install a backup generator today — and start enjoying reliable power protection right away.
Financing puts higher-capacity generators within reach. Better systems mean more reliable power, longer equipment life, and more comprehensive home protection — benefits that pay off year after year.
Fixed monthly payments make it easy to budget for your project. No surprises, no hidden fees — just a clear path to backup power that fits your household’s finances.
Lancaster County family relaxing comfortably at home

Wells Fargo

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 whole-home generator 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’s backup power. 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-quality backup generator systems. With a simple application process and a variety of repayment terms, upgrading your home’s power protection doesn’t have to mean a large upfront cost.

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NATE-certified J&G Heating & Air Conditioning technician performing preventive maintenance on a generator system
Protect Your Investment

Protect Your Generator with Preventive Maintenance

When you join one of our maintenance programs, you’ll receive scheduled tune-ups performed by our certified technicians who know your system inside and out. We’ll exercise your generator under load, change the oil, inspect fuel lines, test automatic switching, and ensure everything is operating as it should.

Regular maintenance doesn’t just prevent breakdowns — it also ensures your generator starts reliably when you need it most and protects your manufacturer warranty coverage. It’s one of the smartest investments you can make in your home’s power security and your family’s safety.

Our Maintenance Plans Include:
Receive professional inspections and tune-ups for your generator system each year, ensuring your equipment is ready before the next power outage.
As a maintenance plan member, your service requests jump to the front of the line — so you spend less time waiting on a fix and more time enjoying reliable backup power.
A clean, well-tuned generator starts reliably when you need it most. Members typically see fewer emergency breakdowns and longer equipment life year-round.
Catching small issues early prevents major breakdowns and extends the life of your generator equipment — protecting both your power security and your investment.
FAQs & More

Frequently Asked Questions About Whole Home Generators

Cost varies widely based on generator size, fuel type, and electrical complexity. A typical 10 kW residential system is meaningfully more affordable than a larger 20 kW system, but every installation is unique. Financing is available to spread costs over time. Contact us for a written estimate, and ask about current promotions.
A straightforward installation takes 2–3 days: day 1 for pad preparation and electrical work, day 2 for fuel line and final connections, day 3 for testing and permitting. Complex installations (long fuel lines, electrical upgrades) may take longer. We’ll provide a timeline when we quote the project.
It depends on your home size, major appliances, and power priorities. A typical family home needs 10–15 kW. We’ll analyze your electrical panel and recommend the right size. Oversizing is expensive; undersizing means the generator can’t power everything during an outage—we size it right for your actual needs.
Natural gas is continuous and never runs out—ideal if you have a municipal gas line. Propane requires a tank and periodic refills, but it’s ideal for homes without natural gas access. Propane also works if the utility gas line fails. We’ll recommend based on your home’s fuel sources and location.
Yes. Modern generators are sized to power central AC, heat pumps, and all home heating systems. However, if your home has a very large AC system or electric heating and you want to run multiple loads simultaneously, the generator must be appropriately sized. We’ll confirm this during the assessment.
Yes. Electrical work and fuel line installation require local permits and inspections. We handle all permitting and coordinate with inspectors. The permit process ensures the generator is installed safely and meets code. Proper permitting also protects your home warranty and insurance.
We recommend annual maintenance: an oil change, filter change, and exercise run under load. Generators sitting idle for months can develop fuel gum and engine issues—regular running prevents this. We offer annual maintenance contracts and will schedule reminders.
When power fails, your generator senses it within 10 seconds, starts automatically, and switches your home’s power. You’ll hear it start—it’s audible from outside but not deafening. Inside your home, you’ll simply notice the lights stay on and appliances keep running. It’s seamless from your perspective.
Absolutely. It’s good practice to run your generator under load monthly to keep the engine in top condition. You might run it during a time when neighbors won’t be disturbed. We can show you how or schedule a professional maintenance run.
That’s why maintenance is critical. A well-maintained generator starts and runs reliably. Emergency service is available Mon–Sun, 6:00 AM–10:00 PM (after-hours fee applies)—if your generator fails during a power outage, call us at 717-872-6994. We’ll diagnose and repair it quickly. This is rare with properly maintained systems.
Never Be Without Power Again

Ready to Protect Your Home with Backup Power?

Pennsylvania’s unpredictable weather makes whole-home generators more important than ever. A winter ice storm, a summer derecho, or a grid failure can leave your home dark, cold, or hot for days. A whole-home generator eliminates that risk. J&G Heating & Air Conditioning has been installing and maintaining Generac generators for over 20 years. We’re an Elite Dealer, which means we have factory training, genuine parts, and priority support. Your generator is backed by Generac’s reputation and our commitment to keeping it working.

Pair your generator with our maintenance plans. Annual service ensures your generator starts reliably when it matters most. We help Lancaster County homeowners take advantage of utility and equipment rebates that can lower your out-of-pocket cost on a new generator installation. Browse available rebates. No hidden fees, no pressure — just honest advice and professional service.

Ensure Complete Home Comfort and Reliability

Central Air Conditioning Systems

Cool summers with backup generator power ensures you’re never trapped in heat.

AC Installation
Furnace and Heating Installation

Your generator keeps your furnace running during winter outages—critical for safety and comfort.

Furnace Installation
Heat Pump Systems

Efficient heating and cooling powered by your backup generator year-round.

Heat Pump Installation
HVAC Maintenance Plans

Pair your generator with regular system maintenance to ensure both stay in top condition.

Explore Maintenance Plans

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