Natural gas and propane furnaces

Natural Gas Furnaces

A natural gas furnace can be used by itself, paired with a heat pump as a hybrid or dual fuel system though it is usually paired with a straight air conditioning system. Natural gas is burned in a metal heat exchanger. Air is run across the heat exchanger and then distributes that air through a ventilation system. When paired with a straight air conditioner the natural gas furnace provides all of the heat. When used in a dual fuel system that is pair with a heat pump, the furnace only provides heat when emergency heat is turned on or the exterior temperature drops below 40 degrees. Natural gas furnaces come in different levels of efficiency, from 80% to 90% and greater. For more information on the efficiency levels contact us.

Common Problems

Heat Exchanger

The heat exchanger is a system of metal tubes that is designed to safely transfer the heat from the burning gas to the air that will circulate the house. If the metal becomes rusted or cracks is it possible to have unburned gas and carbon monoxide mixing with the air that will circulate the house. It is also possible for the tubes to become clogged with soot and not allow proper exhaust.

Blower Motor

Over time dust can build up on the blower motor, particularly if the filter is not regularly changed. This build up on the motor can result in reduced system efficiency as the fan will not be able to push as much air. This build up can also cause premature motor failure.


Over time the burners in the system can become clogged resulting in inefficient burning of the gas. Regular cleaning is recommended to ensure the burners stay clean.

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(540) 399-1300

Propane Furnace

Propane furnaces are exactly the same as natural gas furnaces with the same common issues. When replacing either a natural gas or propane furnace we use the same equipment but just use a conversion kit if the system uses propane.

Types of Heating Systems


-Hot Water Boiler
-Steam Boiler

Ductless Heat

-Electric Space Heater
-Fire Place**
-Gas Fired Space Heater
-Pellet Stove**
-Wood Stove**

Heat Pumps

-Ductless Mini-Splits
-Ductless Multi-Splits
-Geothermal Heat Pumps**
-Outdoor Heat Pumps

Warm Air Furnaces

-Electric Furnace
-Natural Gas Furnace
-Oil Furnace**
-Propane Furnace

** Loving Air does not do service work, repairs or installation of fireplaces, stoves, geothermal or oil systems.

How can Loving Air help?

Free second opinion on major repairs.

If another licensed HVAC professional has told you that your indoor evaporator coil, outdoor condenser coil or your compressor needs to be replaced, we will send one of our trained technicians out at no charge for a free second opinion and free estimate for repair.

Free estimates on system replacements.

Whether or not your current system is in need of repair we can send out one of our managers at no charge for a free estimate for replacement.

Affordable payment plans.

Loving air offers multiple payment options for system replacements.


Customer Reviews

Our honest service includes:

Maintenance and troubleshooting of your system

Work on all makes and models

Fast and dependable service

Use dependable parts

Examples of HVAC products that we service:

Natural Gas and Propane Boilers

Ductless HVAC Systems

Gas Furnaces

Warm Air Furnaces

Heat Pump

Unit Heaters

ac unit

Customer Loyalty Free Membership

(540) 399-1300

  • Free no hassle membership
  • Evaluate your system and get your system up to our standards
  • Receive 15% off of parts and labor
  • Two services per year—one heating and one cooling inspection

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