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Glossary

SEER stands for Seasonal Energy Efficiency Ratio. The SEER measures air conditioning and heat pump cooling efficiency, which is calculated by the cooling output for a typical cooling season divided by the total electric energy input during the same time frame. A SEER rating is a maximum efficiency rating, similar to the miles per gallon or litres/100km rating for your car.

If the heat exchanger (the major component of your furnace) or the compressor (the most important part of your air conditioner or heat pump) fails within the first 12 years for Supreme &amp; Enhanced models and first year for Value (when registered) we’ll replace the product with like product under the <strong>Maytag Dependability Promise program.</strong>

Also called a spiral compressor or scroll pump. Used in air conditioning equipment to compress air or refrigerant. Scroll compressors run quieter and smoother than reciprocating compressors because they only have two moving parts: a fixed and orbital scroll. 

Designed to work at one speed/one RPM and delivering one CFM of airflow. Two major problems with a fixed speed motor are uneven heating and increased operating noise.

With up to 18 different speeds, this motor has higher efficiency and better control.

A single stage furnace has two settings, on and off.

The thermostat in the house calls for heat, so the furnace comes on. Full power. It will run at full capacity until the thermostat is satisfied, then shut itself off.

This is the cycle, so you get somewhat uneven heat throughout the house. The furnace hits you with blasts of warm air that give you temporary comfort, but doesn’t do a great job of maintaining that comfort. In that way, a single stage furnace is not very energy efficient. But it is the most affordable option to purchase.

Electronically Commutated Motor (ECM)
Sometimes referred to as a variable speed motor. The motor varies its RPM in response to changing conditions in the system in order to maintain the programmed CFM.

The burner in a two-stage furnace can run at two different levels. While designs vary from manufacturer to manufacturer, an example would be a burner designed to run at 60% and 100% capacity.

A two-stage furnace is quieter and generates more even heat throughout the house. The longer, slower heating cycle eliminates the kind of rapid warming that many people find uncomfortable from a single stage furnace.

Minimum Efficiency Reporting Value (MERV) is a standard that rates the overall effectiveness of air filters. Higher value MERV rating equates to finer filtration, meaning fewer dust particles and other airborne contaminants can pass through the filter.
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