Heating & Cooling
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Heating
Heating
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- Heating oil services overview
- Heating oil services
- Furnace and boiler repair and service
- HVAC home system accessories
- Service Plans
- Special Offers
- Equipment
- Protection plans
- Natural gas services
- Pricing and payment plans
- Water heaters
- Emergency weather services
- Heating oil FAQs
- Heating equipment FAQs
- Seasonal offers
- Heating system special offers
- Heating oil special offers
- Featured articles
- When should you repair or replace your furnace
- Choosing the best heating oil company – get the services you want and need
- Home heating oil: it is a great value
- Want to save on your home heating bills? Here are the top 10 ways to do it
- Tankless hot water heaters vs. tank storage water heaters
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Cooling
Cooling
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- Air conditioning services overview
- Air conditioning services
- Trane AC equipment
- HVAC home system accessories
- AC special offers
- Service plans
- AC tune-ups
- Ductless mini-split AC systems
- Cooling FAQs
- Seasonal offers
- Cooling system special offers
- Cooling system tune-up offers
- Featured articles
- Energy-efficient air conditioning systems – why you need one now
- When should you replace your central air conditioning system
- Central air conditioning vs. ductless air conditioning systems
- Choosing the best air conditioning system for your home
- Chill out about energy costs with our AC checklist
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- Propane Propane
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Other
Other
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- Generators overview
- Generators
- Humidifiers
- Indoor air quality
- Chimney services
- Agricultural and industrial services
- Other fuels
- Water heaters
- Water Services
- Generator FAQs
- Home services FAQs
- Featured articles
- Whole house or portable generators – what's the difference
- Top 10 reasons to buy a generator
- Why you need an indoor air quality system: get the facts
- Is your home prepared for storms
- Moving? We'll take some things off your to-do list
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Serving Southeastern and Central PA
Find your experts
Go with Petro for live 24/7 emergency service.
Our local team of experts is always available to take care of any HVAC, heating or cooling emergency repairs – whatever the weather!
Schedule your serviceHVAC services that are best-in-class.
From expert heating and cooling system installation to fast water heater repairs, we’re the local HVAC pros you can rely on for all your comfort needs.
Schedule HVAC service
Heating oil services you can always rely on.
Go with Petro for better savings, worry-free delivery, flexible pricing plans, monthly budget plan and a guaranteed oil supply, so you’ll never run out.
Become a customerPropane for all the ways you use it.
We’re the local propane pros you can count on for worry-free delivery of the propane to power your home, with no hidden delivery surcharge fees and more!
Become a customer
Generators to keep your home powered up.
For whole-house standby generator installation, repair and maintenance services to ensure that life goes on anytime power goes off at home, go with Petro.
Request an estimateSee what our customers are saying!
Anna S.
May 18, 2026
I called Leffler Energy because my ac unit wasn't working. They responded quickly and the tech Dylan was wonderful. He fixed the issue right away and i ended up buying a ac service contract for peace of mind.
Donald R.
May 05, 2026
Good service.
John M.
Apr 27, 2026
I had a wonderful experience with Rob when he came out to service my A/C. Very friendly and knowledgeable. Made sure everything was in order before he left.
Expert tips and the latest company news.
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Giving back to the communities we serve.
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Giving back to the communities we serve.
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Giving back to the communities we serve.
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Giving back to the communities we serve.
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