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(717) 543-3034

Questions? We have answers

24-Hour Service Available

We're here when you need us

Gas & Propane Furnace Repairs and Installation

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Don’t get caught in the cold! Keep your home’s furnace working at peak condition so you can stay warm and cozy. 

When it comes time repair and maintenance, MGM Mechanical team of repair specialists can help you to diagnose the issues and get the appropriate fix. We’re here to help you keep your home’s heating system running at peak performance, whether you’re in Harrisburg, Selinsgrove, Mifflinburg, or Lewistown, PA.

Benefits of Regular Maintenance and Repair for Gas & Propane Furnaces

Similar to an oil burner furnace system, a propane or natural gas furnace can last up to 15 years. Regular maintenance and quality repairs you can further extend your furnace’s life, saving you money and keeping you warm.

MGM’s Preventative Maintenance Plan

With MGM Mechanical’s preventative maintenance program, you can schedule one of our expert HVAC professionals to:

  • Clean heat exchangers
  • Clean exhaust vents
  • Replace filters and nozzles
  • Check gas or oil pressures
  • Inspect electrodes, ignitors
  • Set up with analyzer for maximum efficiency and safe CO levels
  • Inspect relief valves and expansion tanks

General Gas Furnace Maintenance Tips

Some simple maintenance checks that you can do yourself to keep your home’s furnace system up and running include:

  • Clean or replace your filters
  • Test your smoke and carbon monoxide detectors
  • Clean your burners
  • Check your gas line for leaks
  • Check your thermostat
If you have concerns about anything you find or aren’t sure that you can properly address any issues, call one of our repair specialists at MGM Mechanical. 

Should You Repair or Replace your Propane or Gas Furnace?


Often times a repair visit will fix any issue with your current system. Age will play the biggest role in determining whether you need to repair or replace your natural gas or propane furnace. Generally, home furnaces can last around 15 years, however, a repair visit could potentially buy you a few more years – especially if your system is less than 12 years old. 

Also, take into consideration the service history of your system. If you have kept up with maintenance and repairs and your propane or natural gas furnace has been reliable and problem-free, a simple repair visit can address any current issue and get your system back to proper operation. 



Unfortunately, nothing lasts forever. If your home’s propane or natural gas furnace is over 15 years old, you may notice that repairs increase in both price and frequency, you’re having to adjust your thermostat more often because your system can’t maintain temperature or you notice that your energy bills are going up. It may be time to replace your home’s furnace if repair costs exceed more than 50% of what it would cost of installing a new, more efficient replacement. 
Things to check when considering replacement
  • Age of your furnace – your propane or natural gas furnace should last from 16-20 years. As your home’s heating system approaches this age, it may be time to start looking for replacements.
  • Repair records – If your furnace has needed multiple repairs within the past 2 years, it may be time to replace it. 
  • Poor heat distribution – Some rooms may be hotter or colder than others. If your home is not evenly heated, it may indicate that your furnace is not operating at its best.
  • Increasing energy bills – as a result of poor heat distribution, your natural gas or propane furnace may have to work harder and use more fuel to heat your home, driving up energy costs. 
  • Yellow furnace flame – a yellow flame indicates that your furnace is producing poisonous carbon monoxide. Contact a service technician immediately.

Understanding your Propane or Natural Gas Furnace

Propane and natural gas are very similar and popular ways to heat your home. It’s important to understand how your furnace system works so that you know what to look for should anything go wrong. 

Here’s how your gas furnace heats your home.


  1. Natural gas or propane ignites in the burner.
  2. The flames heat up a metal heat exchanger which transfers its heat to the incoming air while sending harmful exhaust out through the flue.
  3. The furnace’s blower forces the heated air into the ductwork and distributes it throughout your home.
  4. As the warm air fills each room, the colder, denser air gets drawn back into the furnace via the return ducts to repeat the process.

If you notice that your home’s gas or propane furnace is not operating at its best, contact MGM Mechanical to get your furnace back to peak performance.