Generator Repair & Maintenance Service

Keep your backup power system ready when you need it

A whole-home generator is only valuable if it works when power fails. J&G Heating & Air Conditioning provides comprehensive generator repair and annual maintenance to keep your Generac running reliably. From routine oil changes and fuel system inspection to emergency repairs during outages, we’re your trusted generator partner. With NATE-certified technicians and responsive emergency service (Mon–Sun, 6:00 AM–10:00 PM, after-hours fee applies), we ensure your backup power system is always ready.

BBB Accredited Business A+ Rating NATE Certified Heil Elite Dealer Fujitsu Elite Contractor
Why Generator Maintenance Matters

Why Choose J&G Heating & Air Conditioning for Your Generator Service

When you invest in a whole-home generator, regular maintenance is essential to ensure it works when you need it most. Our experience with Generac systems, manufacturer certifications, and family-owned service all add up to one thing: a generator maintenance program that keeps your backup power system reliable, backed by people who’ll be here for future installations and emergency repairs when you need them.

Schedule Your Generator Service

What Sets Our Generator Service Apart?
A well-maintained generator starts reliably when the grid goes down. A neglected one might not start at all when you need it most. Our comprehensive maintenance ensures your backup power system is ready for any outage.
Regular maintenance prevents wear, catches small issues before they become major, and keeps your generator running 15–20+ years. Our preventive approach saves you thousands in premature replacement costs.
Annual inspection identifies worn parts, fuel degradation, battery issues, and other problems. Early detection prevents emergency breakdowns and costly repairs during critical times.
Generac warranties require documented annual maintenance. We provide maintenance records that protect your warranty coverage and ensure you’re covered if major components fail.
Fuel degrades over time, especially with seasonal storage. Regular fuel system cleaning prevents startup failures and ensures your generator runs smoothly when called upon.
We test your automatic transfer switch each year to confirm it detects outages and switches to generator power reliably. This critical component must work perfectly for seamless backup power.
Our Service Areas

Generator Service Areas in Pennsylvania

J&G Heating & Air Conditioning provides generator repair and maintenance throughout 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 reliable backup power systems.

Communities We Serve:
Same-day emergency generator service during posted emergency hours. Our primary service area with fastest response times for generator repairs and annual maintenance. More about Lancaster generator service →
Annual generator maintenance and emergency repairs. Located just 10 minutes from our main office, enabling rapid response for generator service calls. More about Denver generator service →
Responsive emergency generator support and comprehensive maintenance plans. Northeast of Lancaster, served by our certified generator technicians. More about Ephrata generator service →
Comprehensive generator service plans and emergency repair service. South of Lancaster on Route 30, convenient scheduling from our central location. More about Columbia generator service →
Professional generator specialists providing maintenance and repair service. North-central Lancaster County, served by our most experienced technicians. More about Lititz generator service →
Our Services

Generator Maintenance & Repair Services

From annual maintenance to emergency repairs, we provide comprehensive generator service to keep your backup power system running reliably when you need it most.

Annual Maintenance Inspection

Our comprehensive annual service includes:

  • Oil and filter change
  • Fuel system inspection and cleaning
  • Battery health check and cleaning
  • Air filter replacement
  • Spark plug inspection
  • Transfer switch testing
  • Load testing (generator runs under light load)
  • Documentation for warranty records

Emergency Repair Service

If your generator fails during an outage—or won’t start when you test it—call us immediately:

  • Emergency response Mon–Sun, 6:00 AM–10:00 PM (after-hours fee applies)
  • Rapid diagnosis and repair
  • Parts replacement (we stock common Generac parts)
  • Testing to verify proper operation before we leave

Seasonal Tune-Up

Before winter or summer, we can:

  • Inspect fuel lines and connections
  • Check battery condition
  • Verify transfer switch operation
  • Test automatic startup sequence
  • Clean or replace air filters

Fuel System Service

For propane and natural gas systems:

  • Tank inspection for leaks and corrosion
  • Regulator check and adjustment
  • Gas line inspection for leaks
  • Safety shutoff valve testing

Common Generator Problems We Repair

Generator Won’t Start
  • Dead or weak battery
  • Fuel system clogged
  • Spark plug issues
  • Transfer switch failure
Starts But Won’t Load
  • Voltage regulation issue
  • Fuel supply interrupted
  • Engine governor adjustment
  • Electrical connection loose
Loud Noise or Vibration
  • Loose mounting bolts
  • Muffler damage
  • Internal engine noise
  • Fuel system pressure
Fuel Leaks
  • Loose fuel line
  • Leaking carburetor
  • Tank damage
  • Fuel pump failure
Our Process

Our Generator Service & Repair Process

Every generator service we perform follows the same proven process — designed to deliver reliable repairs, comprehensive maintenance, and a backup power system that performs when you need it most. Tap any step below to see exactly what happens.

When you call for repair, we listen to your description of the problem and schedule emergency service if needed (typically same-day during outages). We arrive and perform a full diagnostic check, then explain what we found and recommend repair options.

For maintenance visits, annual inspections are scheduled at your convenience. We perform all service and provide detailed documentation, discussing any findings and recommendations.

  • Listen to your description of the problem and assess urgency
  • Schedule emergency service if needed (same-day during outages)
  • Perform comprehensive diagnostic check of all generator systems
  • Explain findings clearly and recommend appropriate repair options
  • Provide upfront estimates before starting any work

For repairs, we provide an estimate before starting work (unless it’s an emergency requiring immediate action). We perform repairs to manufacturer specifications and test the system thoroughly.

For maintenance, we follow a comprehensive checklist covering all critical components. Our technicians are trained on the latest Generac procedures and use only genuine parts.

  • Provide detailed estimate before starting repair work
  • Perform repairs to manufacturer specifications using genuine parts
  • Follow comprehensive maintenance checklist for annual service
  • Use only certified technicians trained on latest procedures

After any repair or maintenance, we test the generator under load to confirm proper operation. We test the automatic transfer switch, verify fuel system operation, and walk you through the results.

Our testing includes simulating a power outage to ensure the transfer switch operates correctly and the generator provides stable power to your home.

  • Test generator under load to confirm proper operation
  • Verify automatic transfer switch functionality
  • Check fuel system operation and pressure
  • Simulate power outage to test complete system response
  • Walk you through all test results and findings

We provide detailed service records for your warranty, recommend the next service interval, and remain available for any questions after service. We also offer optional maintenance plans for hassle-free scheduling.

Our documentation includes photos of any issues found, parts replaced, and recommendations for future service. This comprehensive record keeping protects your warranty and helps with future service.

  • Provide detailed service records for warranty protection
  • Document all work performed with photos and notes
  • Recommend appropriate next service interval
  • Remain available for post-service questions
  • Offer maintenance plans for automated scheduling
Maintenance Plans

Generator Maintenance Plans

Choose the maintenance plan that fits your needs and budget. Both plans include priority service and ensure your generator is ready when you need it most.

Annual Maintenance Plan

  • One scheduled annual inspection and tune-up
  • Oil and filter change
  • Seasonal pre-outage checks (spring and fall)
  • Emergency repair call priority
  • Parts discount (10% off parts and labor)
Choose This Plan

Premium Maintenance Plan

  • Two scheduled inspections per year
  • Oil and filter changes
  • Seasonal checks before winter and summer
  • Monthly automatic self-test monitoring
  • Emergency response guarantee (Mon–Sun, 6:00 AM–10:00 PM)
  • Full parts and labor coverage for emergency repairs
  • All parts at no additional charge
Choose This Plan

Let us know which plan fits your needs, or we can discuss custom options during your consultation.

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

Our Customer Reviews

Flexible Financing

Make Your Generator Service 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 investing in a comprehensive maintenance plan, addressing emergency repairs, or upgrading your generator system, financing allows you to maintain reliable backup power while spreading payments over time.

Our team will walk you through every available option during your service consultation, helping you understand monthly payment amounts, interest rates, and approval requirements. We want the financial side of your generator service to feel just as reliable as your backup power system.

What Are the Benefits of Financing?
Keep your emergency fund intact while still investing in generator maintenance and repairs. Financing lets you maintain your backup power system without depleting your savings account.
Don’t wait for your next paycheck to address generator issues. With financing in place, you can get emergency repairs or comprehensive maintenance today.
Financing puts premium maintenance plans and major repairs within reach. Better service means more reliable backup power and longer equipment life.
Fixed monthly payments make it easy to budget for generator service. No surprises, no hidden fees — just a clear path to reliable backup power.
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 generator maintenance and repairs. With competitive rates and flexible terms, qualifying homeowners can enjoy convenient monthly payments that fit comfortably into their household budget.

Apply Now

Through our partnership with PowerPay, we provide another trusted financing pathway for Lancaster County homeowners ready to invest in generator service. PowerPay’s streamlined application process and flexible repayment plans make it easy to get started on your project without delay.

Apply Now

GoodLeap offers flexible financing options and competitive rates, making it easy for homeowners to invest in generator maintenance and emergency repairs. With a simple application process and a variety of repayment terms, keeping your backup power system reliable doesn’t have to mean a large upfront cost.

Apply Now
FAQs & More

Frequently Asked Questions About Generator Service

At minimum, once annually. We recommend inspection before winter (to ensure heating protection) and a fuel system check in fall.
Annual service is a modest cost that varies with generator size and condition. Maintenance plans bundle this with other benefits and often save money long-term. Contact us for an exact quote.
Basic tasks like checking fuel level or testing the monthly self-start are fine. However, oil changes, transfer switch testing, and load testing should be done professionally. Improper service can void warranty.
Call us immediately at 717-872-6994. We'll diagnose the issue. Often it's a dead battery (quick fix) or fuel system problem (we can repair same-day in many cases).
Most Generac generators have 5–10 year warranties. However, warranty requires documented annual maintenance. Missing maintenance can void coverage. We provide documentation.
Yes. Check before winter especially. A full tank can power your home for 2–3 weeks during an outage. We can check tank pressure during maintenance.
We repair generators of all ages. If repair becomes expensive, we can discuss replacement options. Most generators last 15–20+ years with proper service.
Not advisable. Skipping a modest annual service charge risks a far more expensive emergency repair—or worse, a failed startup during an outage when you need the generator most. Annual maintenance is insurance.
We inspect and test your tank, but fuel delivery is typically handled by your propane supplier. We can recommend reliable suppliers in your area.
We'll assess the situation and provide options: repair it (if cost-effective), rebuild key components, or replace if the unit is beyond economical repair. We'll discuss all options upfront.
Keep Your Generator Ready

Keep Your Generator Ready With Professional Service

Don’t let your backup power system fail when you need it most. J&G Heating & Air Conditioning’s annual maintenance ensures your Generac generator starts reliably, maintains efficiency, and keeps your family protected. With responsive emergency repair service (Mon–Sun, 6:00 AM–10:00 PM, after-hours fee applies) and comprehensive maintenance plans, we’re your complete generator partner.

Ready to schedule your generator service? Contact us today to book annual maintenance or request emergency repair. Why risk a generator failure? Let J&G Heating & Air Conditioning keep your backup power system ready and reliable.

Related Generator & Power Services

Generator Installation

New whole-home backup power systems for complete peace of mind during outages.

Generator Installation
HVAC Service

Repair and maintenance for all heating and cooling systems in your home.

AC Repair Services
About J&G

Why Lancaster trusts us for generator service and all home comfort needs.

About J&G
Contact Us

Emergency service Mon–Sun, 6:00 AM–10:00 PM (after-hours fee applies). We're here when you need us most.

Contact Us

© Red Barn Media Group 2026