What does em heat mean on a thermostat

what does em heat mean on a thermostat

What Is EM Heat On A Thermostat?

Sep 20, If you take a look at the thermostat that controls your homes heating and cooling systems, you might notice a switch or button labeled EM heat.. If you see this, your home probably has a heat pump. The first part of the phrase EM heat stands for emergency. The emergency heat setting on your thermostat controls your heating systems auxiliary heat source, which can be tapped into . What Emergency Heat does and when to use it. The Emergency Heat setting locks out the heat pump and forces the auxiliary heat source (in Minneapolis homes, its most likely a gas furnace) to provide % of the homes heating. Youd only use this setting when the heat pump malfunctions or is damaged and fails to provide heat.

How to write an issue proposal Emergency Heat switch on a Heat Pump thermostat confuses many people. The fact of the matter is that most people don't seem to understand exactly what Emergency Heat is and when they need to use it.

Many people think that Heat Pumps don't work in cold weather and they are supposed to use the Emergency Heat whenever it gets really cold Simply put, all Heat Pumps in northern climates below 35 degrees need a supplemental heating source. Usually it is in the form of electric resistance heating - at the indoor unit. This is an all-electric What does em heat mean on a thermostat Pump, but it could also be a gas, oil, or hot-water back-up system as well.

The supplemental heat is also referred to as second-stage or back-up how to restore antique wood table, with first-stage being the Heat Pump only. Emergency Heat is when you use your supplemental heat 2nd stage by itself, without the use of your heat pump 1st stage heat. Different systems and thermostats have different ways of determining when the second-stage heat comes on to assist the heat pump, but it is always done automatically.

The two stages will work together in the colder months, and it is not necessary to switch your thermostat to Emergency Heat. So now we know that Emergency Heat is basically when you use your supplemental heat by itself. As the name implies, it is only used in emergency situations. What is celexa prescribed for is used when there is something wrong with first-stage heating the Heat Pump itself.

In other words, if you notice your house is cold and it isn't heating properly and you went outside and noticed that a tree fell and crushed your heat pump, that would be a good time to switch to Emergency Heat. Or if you look at the picture below; this Heat Pump turned into a block of ice due to a malfunction. At this point, it isn't capable of providing any heat. Simply turn the thermostat to Emergency Heat and call for service. During the winter months, you should try to make it a habit of looking at your outdoor heat pump.

Check for signs of excessive ice or snow build-up on or around the heat pump. The unit pictured actually froze so badly, that it ruined the heat pump and had to be replaced.

If this problem was caught sooner, it might have just needed a minor repair instead of an expensive what year did the 20p coin come out. When switching to Emergency Heat, the red indicator light will go on.

And it will stay on until you stop using the Emergency Heat. This just lets you know you are in emergency mode. On a call for heat, no signal will be sent to the outdoor Heat Pump. Only the indoor unit and the back-up heat will run. On all-electric systems, this will provide enough heat to keep you going until the Heat Pump can be fixed.

If you have an all-electric heat pump, then the answer is a definite Yes! It is much more expensive to run your heat pump on Emergency Heat. And as the name implies, should only be run in an emergency until your heat pump can be repaired. Now if you have Gas or Oil heat for your backup system, then the answer isn't so clear.

It depends on the cost of your fuel, the efficiency of your heating system, compared to your electric rate and so on. But it is safe to say that the price increase won't be as much as an all-electric system. As explained earlier, the Emergency Heat light will be on whenever your thermostat is set to Emergency Heat. But if your thermostat is not set to emergency heat and the light is on, then that usually indicates a problem with your heat pump. For more on this issue, see: Thermostat red light flashing or stays on.

Please keep in mind that the information found on our website is provided free of charge and Hannabery HVAC does not assume any liability resulting from the information we provide. We hope this information helps, but please note that these are just rough guidelines, and not all possible situations are covered. Your HVAC system should be inspected and repaired by a trained technician.

Frequently Asked Questions. About Us. HVAC Help Online Services Indoor Air Quality New Systems. All rights reserved. Emergency Heat Explained

Emergency heat means constantly using the backup heat

Mar 18, Emergency Heat, also known as auxiliary heat, is the second stage of heat that your thermostat runs on when the temperature is too cold for your heat pump to extract heat from the outside. Emergency Heat is typically triggered when it is 35F and below outside. Since this second stage heat source is designed to be just that, secondary, running your heat pump on emergency heat . Nov 01, EM heat is the short form of emergency heat. As the name suggests, it should only be used in cases of emergency. By switching on your Honeywell thermostats EM heat, youre simply commanding your system to switch off the primary heat mode and rely only on the auxiliary mode. Emergency Heat is when you use your supplemental heat (2nd stage) by itself, without the use of your heat pump (1st stage heat). Different systems and thermostats have different ways of determining when the second-stage heat comes on to assist the heat pump, but it is always done automatically.

Short answer : No. If that happens, contact a professional heat pump repairman for help. Why would emergency heat mode run up your energy bill? To understand, we need to briefly cover how a heat pump works. It costs more to use the auxiliary heat, especially the electric heat strip since it runs off electricity. Just use your backup heat. The backup furnace works more efficiently than the heat strip, but less efficient than the heat pump pulling in heat.

Your heat pump will use the auxiliary heat on its own to supplement heating your home. Want more money-saving tidbits like this? Subscribe to our newsletter to get how-to's, money-saving resources, and more sent to your inbox every month.

Coolray is your Atlanta-area home comfort expert with specialists in heating, air conditioning, air quality and plumbing.

Have more questions? Posted in Heating. To understand, we need to briefly cover how a heat pump works How a heat pump works and how it relates to em heat Your heat pump can heat your home in 3 ways: Moving heat - In heat mode, your heat pump is like an air conditioner working in reverse to pull heat from the outside to inside your home the opposite of how it works in cooling mode.

Backup gas furnace - Many homeowners use their gas furnace in place of the electric heat strip for auxiliary heat at lower temperatures. When to use emergency heat Only use it Make sense, right? Join our email newsletter Get up-to-date current news, promotions and industry tips.

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