The highest quality Air Conditioning and Heating Service in the Oklahoma City area

Citywide Refrigeration knows furnaces!

What is inside a gas furnace?

Use the arrow to see the cross-section of the furnace

•  Heat exchanger

•  Blower / Circulating Fan

•  Induced Draft Fan

•  Air Coils

•  Exhaust Stack Flue

•  Gas Control Valve

•  Ignitor

•  Burners

• Combustion Chamber

What is the A-Coil?

Also known as the evaporator coil,  this coil receives the refrigerant from the air condenser unit located outside. Composed of hundreds of tiny air passages, it is vital the coil be kept clean of dirt and dust to allow full air flow. Otherwise, your heating and cooling temperatures will be affected,

What is a heat exchanger?

A specialized metal cell that efficiently transfers heat from one medium to another. In the case of a gas furnace, it separates the warming flame from the air that circulates into your home. The burners heat up the exchanger which in turns heats up the air. Your blower then pushes the heated air into your house.

What color should the flames be on my gas furnace?

In a natural gas furnace, when you look at the burners, you should see a mostly blue flame. if you see yellow or dancing flames, call us and we will send a technician out to inspect your furnace. If it is orange, it could be the gas and air mixture or perhaps your furnace is dirty.

  if you have any concerns, call Citywide Refrigeration Heating & Air at 405/737-2525

We are the authorized dealer and installer for

American Standard & Trane Furnace Systems

There are literally hundreds of furnaces to choose from but we can help you decide which one will work best for your home and your budget.

Our American Standard Products include:


Platinum ZV Furnace:

Ultimate comfort with superior efficiency and AccuLink™ connectivity.*


Platinum SV Furnace:

Incredible two-stage home comfort with AccuLink™ connectivity.*


Gold XI Gas Furnace:

Quiet affordable heating for your home with a step up in efficiency.


Silver SI Furnace:

Reliable, affordable heating with an energy-efficient gas furnace.


Silver Series SI Furnace:

Get efficient performance with the Silver Series SI home furnace.  A solid and reliable unit, this residential furnace is designed to provide affordable heating throughout your entire home.


For a full list of our American Standard products, use our contact email form or call us at 405/737-2525

Our technicians are fully licensed and insured.

Financing Available WAC

Our Trane Products include:


XC95m Furnace:

Up to 97.3% AFUE, Communicating capability, Fully modulating heat


XT95 Furnace:

95% AFUE or more, High efficiency blower motor, Single-stage heating


XB90 Furnace:

90% AFUE or more , Four-speed blower motor, Single-stage heating


XT80 Furnace:

80% AFUE, High efficiency blower motor, Single-stage heating


XB80 Furnace:

80 percent efficient furnace with AFUE , Four-speed blower motor

Single-stage heating furnace


For a full list of our Trane products, use our contact email form or call us at 405/737-2525

Have questions or if you need a free quote - Call Citywide Refrigeration now at 405-737-2525