Gas Furnace Basics

One of the more common products we deal with at RSC is the Gas Furnace. A gas furnace is a device that converts either natural gas or propane into heat energy that is then distributed through an air duct system to warm your home. Other gas systems that distribute the heat by water or steam baseboard and radiators is referred to as a Gas Boiler.

Gas furnaces can be separated into two categories, non-condensing and condensing. To simplify this, a non-condensing gas furnace is less efficient usually around 80% AFUE (Annual Fuel Utilization Efficiency) and utilizes a standard chimney. A condensing gas furnace has a higher combustion efficiency usually starting at 90% AFUE or higher and utilizes PVC pipe to vent the combustion gases.

Whether your home requires the use of a non-condensing furnace or can be modified to accept the higher efficient condensing type gas furnaces, there are many advantages of heating with a gas furnace. Because the cost of natural gas and propane has been at all-time lows, you can expect to have great savings over fuel oil and most heat pumps or all electric systems. Gas furnaces are very reliable, have a life expectancy of 20-25 years and the level of comfort is unsurpassed.

Why Choose RSC for your Gas Furnace

At RSC, we have been designing, installing, servicing and maintaining gas furnaces in the Lancaster County and surrounding areas for over 28 years. When you choose RSC to install your gas furnace, we make sure it is properly sized for your home to meet your comfort expectations. We evaluate your duct system and make recommendations and changes for improved performance and efficiency, and most importantly we always take the utmost care in preparing, installing and commissioning the new system to ensure peak performance, safety and longevity.

Furnace Maintenance

Because gas furnaces are so reliable and virtually trouble free, many people forget about having maintenance performed. We recommend gas furnace maintenance be performed on a yearly basis as there are critical safety measures that must be checked in order to keep the system working efficiently and safely.

There are times when gas furnace service is required. If you are experiencing any of the following issues, your best course of action is to call RSC and have our NATE Certified Technicians evaluate your service needs.

  • Pilot light will not light or stay lit
  • No heat or insufficient heat
  • Any unusual sounds
  • No air coming from the registers
  • Any unusual odors
  • A carbon monoxide alarm

Once our technicians promptly and accurately diagnose your system’s problems, we will provide a no surprise price for repair. In most cases, gas furnace repair can be made during the initial service visit. We service and maintain all brands of gas furnaces and are available 365 days per year.

Replace Your Current Furnace

If you find you’re in need of having your gas furnace replaced or evaluated for replacement, call the award winning experts at RSC. Our Comfort Consultants will evaluate your needs and recommend the perfect gas furnace replacement. Our NATE Certified technicians will expertly install and commission your new system to ensure that your investment is operating at peak performance, saving you money and enhancing your comfort.

Below is our complete line of gas furnaces perfect for your home or business. Give us a call today and we’ll begin finding the right fit for you!

Infinity 98 Modulating Gas Furnace (Best)

Infinity Gas Furnace

Energy Efficiency Energy Efficiency in Lancaster and York

Quiet Level


  • Heating efficiency that delivers up to 98.5 percent AFUE, the highest that you can purchase.
  • Precise gas modulation with movements in 1 percent increments
  • SmartEvap™ technology can lessen the humidity in your home by nearly 10%
  • ComfortFan™ technology allows control of continuous fan speed with a compatible control
  • Lifetime heat exchanger limited warranty
  • Ten year parts limited warranty when properly registered
Looking for top-of-the-line comfort, performance and efficiency? As its name suggests, the Infinity series takes them further than they’ve ever been.
Brand: Carrier
Manufacturer: Carrier
Model: 59MN7
Review: 5/5

Infinity 96 Gas Furnace (Better)

Lancaster Gas Furnaces

Energy Efficiency rate 6of7 Air Conditioners

Quiet Level


  • Up to 96.7 percent AFUE
  • Two stages of heat allow for economical use year in and year out
  • SmartEvap™ technology can lower the humidity in your home by nearly 10%
  • ComfortFan™ technology allows control of continuous fan speed with a compatible control
  • Lifetime heat exchanger limited warranty1
  •  Ten year parts limited warranty when properly registered
Whether you live in the cold North and need the high-efficiency of a condensing gas furnace or the moderate South and can do just fine with a little less efficiency, you'll still enjoy ultimate comfort with these Infinity series furnaces.
Brand: Carrier
Manufacturer: Carrier
Model: 59TN6
Review: 4.6/5

Performance™ 95 Gas Furnace (Good)

Gas Furnace for Lancaster & York PA

Energy Efficiency rate 6of7 Air Conditioners

Quiet Level

Durability rate 6of7 Air Conditioners

  • Superior energy savings – up to 95% AFUE
  • ComfortFan™ technology
  • Sealed combustion system
  • Stainless steel heat exchangers for lasting durability
  • Pilot-free PowerHeat™ ignition
  • 10-year parts limited warranty when properly registered
Efficient, quiet, flexible and durable, these powerful furnaces live up to their Performance name every day—no matter where you live.
Brand: Carrier
Manufacturer: Carrier
Model: 59TP5
Review: 4/5

Trust RSC to Heat Your Home

Whether you are seeking annual care for a gas furnace through proper maintenance, in need of gas furnace repair or considering gas furnace replacement, turn to the experts at RSC. For the past 28 years, we have been serving all of Lancaster County communities including: Lancaster; Lititz; Ephrata; Elizabethtown; East Petersburg; Landisville; New Holland and many more.

Our reputation has been built on complete customer satisfaction, attention to detail, and providing affordable options for every need including a wide array of financing plans for gas furnace repair or gas furnace replacement. Call RSC today to schedule an expert to your home.