Ever wonder if it's better to leave your new mini split air conditioner running all winter long or only turn it on when needed? You've invested in an efficient mini-split system to keep your home comfortable, but you also want to keep energy costs under control. Leaving it running 24/7 during the winter seems wasteful, but constantly turning it on and off can't be good for the system or your energy bill either. Let The Trade Table walk you through this question!
GREE Vireo+ Ultra 30K BTU 18 SEER Wall Mount Mini-Split Single Zone Heat Pump - VIRU30HP230V1A
$4,113.85
GREE Vireo+ Ultra 30K BTU 18 SEER Wall Mount Mini-Split Single Zone Heat Pump The Vireo+ Ultra combines the design of the original Vireo+ system, while extending the operating capacity to -31°F. It has been designed to blend into any… read more
Should I Leave My Mini Split On All The Time In Winter?
Leaving your mini-split on all the time during the winter can be beneficial for maintaining a consistent indoor temperature and improving energy efficiency. Mini-splits are designed to operate efficiently, especially when maintaining a steady temperature rather than constantly heating up a cold space. By leaving it on, the system can run at a lower power level most of the time, which can be more efficient than turning it on and off, as it avoids the energy surge required to heat the space from a cold start. Maintaining a constant temperature also helps prevent the room from becoming too cold, which could lead to comfort issues or potential problems like frozen pipes.
However, it is important to set the temperature to a reasonable level that balances comfort and energy use. Many modern mini-splits have eco or energy-saving modes that can help manage energy consumption effectively while the system runs continuously.
Pros of Leaving Your Mini Split on 24/7 in Winter
Lower Energy Bills
Keeping the unit on all the time means it doesn’t have to work as hard to heat your space back up after the temperature drops, so it operates more efficiently. This can translate into lower power bills, especially if you have it set to a consistent thermostat setting.
Prevent Pipes from Freezing
Running your mini-split continuously prevents the temperature from dropping enough for pipes to freeze, which could lead to water damage. As long as you have it set to at least 55°F, your pipes and water lines should stay thawed.
Improve Air Circulation
Keeping your mini split fan running moves the air in your room, improving circulation. This helps prevent cold spots, ensures even heating, and moves stagnant, stale air out. Improved airflow also helps with respiratory health and can reduce allergen buildup.
Peace of Mind
Knowing your heater will automatically turn on if the temperature drops gives you peace of mind that your space won't get too cold. This is especially reassuring if you have kids, pets, or plants to keep warm. You can go about your day without worrying whether you turned the heat on or off.
GREE Livo Gen4 9K BTU 19.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump - 4LIV09HP230V1A
$1,047.19
GREE Livo Gen4 9K BTU 19.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump The 4LIV09HP230V1AH / 4LIV09HP230V1AO single-zone system is one of Gree’s new 3rd generation of Livo mini splits designed to provide a convenient, efficient method to cool… read more
Cons of Running Your Mini Split Continuously in Cold Weather
Leaving your mini-split running continuously through cold weather has some downsides to consider.
Increased energy usage
Constant operation means higher energy bills. Mini-splits are efficient, but they still consume power. Running it 24/7 for heating can significantly increase your electricity usage and costs over the winter.
Shortened lifespan
Continuous use can reduce the lifespan of the mini-split. The compressor, fans, and other components have to work harder in cold weather. This additional stress and run time causes more wear and tear, potentially shortening the unit's useful life by several years. It's a good idea to turn it off when you're away or sleeping to give it a break.
Risk of freezing
If the outside temperature drops well below freezing, a mini-split running constantly may struggle to defrost itself and could freeze up. The refrigerant lines are particularly vulnerable. Turning the unit off periodically reduces this risk. It's also a good idea to install a mini split rated for low ambient temperatures suitable for your climate.
Higher maintenance
More run time means the filters get dirtier faster and require more frequent cleaning or replacement. The drain line is also more prone to clogs from the increased condensation. Additional maintenance like professional servicing may also be needed more often.
MRCOOL E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System
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MRCOOL DIY 4th Generation E Star 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz The MrCool 4th Generation DIY 24K BTU, 20.5 SEER Ductless Heat Pump is an all-in-one system that seamlessly combines efficiency, durability, and simplicity. This system… read more
How Do Mini Splits Work In Cold Weather?
Mini-split systems are designed to work efficiently even in cold weather, thanks to advanced technology that allows them to provide heating and cooling. They use a heat pump mechanism that extracts heat from the outside air, even when temperatures are low, and transfers it inside your home.
Here’s how they operate in cold weather:
Heat Pump Operation: In heating mode, the mini-split outdoor unit absorbs heat from the outside air. Even in cold conditions, some heat is still available in the air, which the system can capture.
Refrigerant Cycle: The captured heat is transferred to the refrigerant inside the system. The refrigerant, now heated, is compressed to raise its temperature further and then circulated to the indoor unit.
Heat Distribution: The indoor unit releases the heat into the room, warming the space. The mini-split continues this cycle to maintain a consistent indoor temperature.
Cold-Weather Adaptations: Modern mini-splits are equipped with advanced technology, such as inverter-driven compressors and cold-climate heat pumps, that allow them to operate efficiently in temperatures as low as -13°F (-25°C). Some units also have a defrost mode that prevents ice buildup on the outdoor unit, ensuring it continues to work effectively.
Because mini-splits are designed to be efficient, they can provide reliable heating in cold weather without significantly increasing energy costs, making them a good option for year-round climate control.
GREE Livo Gen4 12K BTU 17.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump - 4LIV12HP115V1A
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GREE Livo Gen4 12K BTU 17.5 SEER2 Wall Mount Mini-Split Single Zone Heat Pump The Gree Livo Gen4 system provides high efficiency and quiet comfort. The compressor features Gree's G10 Inverter and variable compressor technology, which enables the unit to… read more
Should I Cover My Mini Split In Winter?
It's generally unnecessary to cover your mini-split system in winter, and in some cases, doing so could be detrimental. Mini-splits are designed to withstand harsh weather conditions, including snow, rain, and ice. The outdoor unit is built with durable materials that can handle winter elements, and it needs proper airflow to operate efficiently, especially if it is used for heating during the winter months.
MRCOOL E Star DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System
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MRCOOL E Star DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz The E Star DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz is a high-performance heating and cooling solution for… read more
Tips for Operating Your Mini Split Efficiently This Winter
Operating your mini-split efficiently this winter means finding the right balance to keep your home comfortable while optimizing energy usage. Here are some tips to help you get the most out of your unit:
Location Matter
If you live in Birmingham, Alabama, this advice will be much different than living in New York since the temperatures will be much colder in New York.
Set a consistent schedule
Establish a regular heating schedule to maintain a steady indoor temperature. Program your mini split to turn on around 30 minutes before you wake up in the morning and turn off around 30 minutes before bedtime. This allows it to efficiently heat the space without constantly turning on and off. Consider using a smart thermostat to automate the schedule.
Choose an ideal temperature
The most efficient indoor temperature for winter is around 68-72 F. Any lower and your mini split has to work harder to maintain heat, using more energy. Any higher and you’re paying to heat an unnecessarily warm space. Find a temperature in that range that keeps you comfortably warm while still being energy efficient.
Use the fan only when needed
Run the mini split's fan only when the heating or cooling is actively running. Keeping the fan continuously circulating can draw more power even when the unit isn’t calling for heating or cooling. The fan will turn on automatically when the mini-split starts heating or cooling your space.
Clean the air filters regularly
Dirty, clogged air filters reduce airflow and make your mini-split work harder to heat your home. Check and clean or replace the air filters once a month if you notice reduced airflow or strange noises from the unit. Clean filters allow for the most efficient heating and help keep your energy costs down.
Consider using supplemental heat
If you have a larger space or want to avoid running your mini split constantly, consider using space heaters to supplement the heating in the rooms you use most. Run the space heaters on timers so they turn off automatically when you're not in the room. Make sure any space heaters you use are approved for unattended operation and have safety mechanisms like automatic shutoff if tipped over.
Stealth Comfort 24,000 BTU 24 SEER ACiQ Single Zone Wall Mount Mini Split System w/ Extreme Heat and WiFi
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Stealth Comfort 24,000 BTU 24 SEER ACiQ Single Zone Wall Mount Mini Split System w/ Extreme Heat and WiFi Enhanced Comfort ACiQ Single Zone mini split systems provide precise temperature control, near silent operation, and maximum efficiency at a competitive… read more
Should I Leave My Mini Split On all the Time in Winter?
So in the end, should you leave your mini split on all the time during winter? It depends on your priorities and needs. If energy efficiency and lower utility bills are top of mind, then running it only when needed is your best bet. But if maximizing comfort and convenience are most important, keeping it on 24/7 will ensure your space is always at the perfect temperature. As with many things, moderation and balance are key. Find the setting and schedule that keeps you comfortable while still being energy-conscious. Your mini-split is meant to make your life easier, not more complicated, so do what works for you.
Table of Contents
- Should I Leave My Mini Split On All The Time In Winter?
- Pros of Leaving Your Mini Split on 24/7 in Winter
- Cons of Running Your Mini Split Continuously in Cold Weather
- How Do Mini Splits Work In Cold Weather?
- Should I Cover My Mini Split In Winter?
- Tips for Operating Your Mini Split Efficiently This Winter
- Should I Leave My Mini Split On all the Time in Winter?
