What is my Altitude?

Use this tool to find the altitude of your location. Simply enter your full address or zip code and hit "search" to find your altitude on the map.

Why do I need to know my altitude?

If you are installing a heater that uses natural gas or propane, you need to know your elevation. Altitude affects the performance of heaters and certain types of heaters won’t work correctly at high altitude.

For any location up to 2,000 feet above sea level, no modifications are needed. If you are installing a heater above 2,000 feet elevation you should check with the manufacturer’s recommendations to see if any modifications are needed to make your heater run correctly. Typically, modifications include changing the fuel orifice as well as changing the gas valve. These changes alter the fuel and oxygen mixture.

The burner in a heater works by mixing fuel and air to create a mix for combustion. The higher in altitude you get, the less oxygen there is in the air. Since the proportion of fuel to air is now different, a change must be made. Usually, this means that a different orifice needs to be installed in the unit. A smaller orifice combined with the lower amount of oxygen will allow the heater to now work as intended.

Many units will also need to have changes made to their regulators or valves. Always consult the manufacturer’s instructions as well as your local gas company to ensure proper installationi.

Keep in mind that not every product can work at every altitude. Many vent free heaters will not work at all in high altitudes. If you are not sure if a product will work for you, please contact us for more information.

High Altitude Heaters

If you live above 2,000 feet, then you need to make sure you select a heater that is designed for your elevation. The heaters below are designed for use at high altitudes.

Williams Furnace Company 3003 30,000 BTU Gravity Direct Vent Wall Furnace
Williams Furnace Company 3003 30,000 BTU Gravity Direct Vent Wall Furnace

This direct vent furnace is designed to work up to 4,000 feet without any modifications. Above that, they offer special options for factory modification to specific altitude ranges. This heater is ideal for locations up to 8,000 feet.

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Reznor UDAP-100 100,000 BTU V3 Power Vented Gas Fired Unit Heater
Reznor UDAP-100 100,000 BTU V3 Power Vented Gas Fired Unit Heater

Reznor unit heaters are perfect for heating garages, warehouse, and industrial spaces. These heaters can be installed at altitudes up to 6,000 feet without any extra parts. For any installation from 6,000 – 9,000 feet a high altitude kit is required. This allows this heater to be installed almost anywhere.

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Williams Furnace Company 5002A 50,000 BTU Vented Hearth Heater with Fireplace Front
Williams Furnace Company 5002A 50,000 BTU Vented Hearth Heater with Fireplace Front

Williams hearth heaters offer a stylish option for room heating with its fireplace front. Each unit is configurable with a variety of altitude options as well as the choice to add a blower. Whether you have propane or natural gas, this heater can be factory set to work.

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