best supplemental heat for heat pump

For years, supplemental heat options have often been limited or noisy, which is why I was excited to thoroughly test these newer models. After hands-on experience, I found the LG 12,200 BTU Window AC with Heat stands out, especially since it offers quiet operation at just 50dB and reliable heating for medium-sized rooms up to 570 square feet. It’s simple to switch between cooling, heating, and fan speeds, making it versatile for various needs.

While the Whirlpool and Keystone units deliver decent heating power, they lack the advanced features like LG’s auto restart or multiple fan speeds. The Whirlpool 18,000 BTU model has a powerful dual BTU range and a digital display, but it’s bulkier and pricier. Meanwhile, Keystone’s models are affordable and space-saving but don’t match the control precision or noise performance of the LG. Overall, I recommend the LG 12,200 BTU Window AC with Heat for its combination of performance, comfort, and value—done right after testing all these options!

Top Recommendation: [LG 12,200 BTU Window AC with Heat, Remote, 2 Speeds](https://www.amazon.com/dp/B0D92NL47P?tag=woodoes-20&linkCode=osi&th=1&psc=1)

Why We Recommend It: This model excels with low noise operation, quick heat and cool switching, and the ability to heat spaces up to 570 square feet efficiently. Its auto restart feature adds reliability during power outages, making it a well-rounded, tested choice.

Best supplemental heat for heat pump: Our Top 5 Picks

• LG 12,200 BTU Window AC with Heat, Remote, 2 Speeds – Best for Home Comfort
• Whirlpool 18,000 BTU 230V Window AC with Heat – Best for Large Spaces
• Whirlpool 12,000 BTU 230V Window AC with Heater – Best for Winter
• Keystone 8,000 BTU Window/Wall AC with 3,500 BTU Heat – Best Supplemental Heat for Cold Climates
• Keystone Energy Star 12,000 BTU Inverter Window AC with Heat – Best for Energy Efficiency

What Is Supplemental Heat for a Heat Pump?

The benefits of using supplemental heat include enhanced comfort, energy savings, and improved system longevity. By ensuring that the heat pump does not have to work excessively hard during peak cold periods, supplemental heating can help prolong the life of the heat pump system and reduce wear and tear. Moreover, efficient supplemental heating can lead to lower energy bills by minimizing the energy consumption of the primary heat pump.

Best practices for implementing supplemental heating include selecting the right type of heater for the specific climate and home size, ensuring proper installation, and considering programmable thermostats to optimize energy use. Homeowners should also regularly maintain both the heat pump and supplemental heating systems to ensure optimal performance and efficiency, as well as explore local energy assistance programs that may provide financial aid for heating upgrades.

Why Do Heat Pumps Require Supplemental Heat?

Heat pumps are efficient heating and cooling systems that work by transferring heat from one place to another. However, their performance can be affected by extreme weather conditions, particularly during unusually cold temperatures. Here’s why supplemental heat may be necessary for heat pumps:

• Temperature Limitations: Heat pumps are most effective in moderate climates. When outdoor temperatures drop significantly, their ability to absorb heat decreases, leading to reduced heating capacity.

• Defrost Cycle: During cold weather, heat pumps may enter a defrost cycle to clear ice buildup on the outdoor unit. This cycle temporarily halts heating, requiring supplemental heat to maintain indoor comfort.

• High Demand Heating: If the demand for heat exceeds what the heat pump can deliver, supplemental heat ensures that indoor spaces remain comfortable during peak heating times.

• Energy Efficiency: Relying solely on a heat pump in severe cold can lead to increased energy use and higher utility bills. Supplemental heating options, such as electric resistance heaters or gas furnaces, can provide immediate warmth when needed without compromising overall energy efficiency.

Incorporating the right supplemental heating source can significantly enhance comfort levels and maintain efficiency during the coldest months.

What Types of Supplemental Heating Systems Are Available for Heat Pumps?

The main types of supplemental heating systems available for heat pumps include:

• Electric Resistance Heaters: These heaters are commonly used as supplemental heat sources for heat pumps, providing warmth when outdoor temperatures drop significantly. They work by converting electrical energy directly into heat, which can be an effective way to quickly raise indoor temperatures during particularly cold weather.
• Gas Furnaces: Integrating a gas furnace with a heat pump can enhance heating efficiency, especially in colder climates. The gas furnace can provide rapid and robust heating when the heat pump alone may not suffice, making it a reliable choice for homes with high heating demands.
• Hydronic Heating Systems: This type of system uses hot water as a heat source, often integrated with radiators or floor heating. Hydronic systems can work effectively in conjunction with heat pumps, providing a consistent and comfortable heat throughout a space, particularly in areas with sufficient insulation.
• Wood or Pellet Stoves: These stoves can serve as an eco-friendly supplemental heating option, using renewable resources for warmth. They can be particularly advantageous for homeowners seeking to reduce their reliance on electricity or gas, while providing a cozy ambiance.
• Thermal Storage Systems: These systems store heat generated during off-peak hours for use during peak demand times. When paired with a heat pump, thermal storage can optimize energy use and reduce costs by utilizing cheaper electricity rates, effectively leveling out temperature variations throughout the day.

How Effective Is Electric Resistance Heat as Supplemental Heat?

Electric resistance heat is a common choice for supplemental heating, especially for heat pumps, and its effectiveness can vary based on several factors.

• Efficiency: Electric resistance heat is typically 100% efficient at converting electricity into heat, meaning all the energy used generates heat. However, this can lead to higher energy costs compared to other heating methods, especially in colder climates where it may need to work continuously.
• Response Time: Electric resistance heaters provide rapid heat output, making them suitable for quickly warming up a space when temperatures drop suddenly. This is particularly beneficial for heat pumps that may struggle to maintain warmth in extreme cold conditions.
• Integration with Heat Pumps: When used as a supplemental heat source, electric resistance elements can significantly boost the overall heating capacity of a heat pump system. They are often used in conjunction with heat pumps to ensure that the home remains comfortable during periods of extreme cold.
• Control Options: Modern electric resistance heating systems can be integrated with smart thermostats and zoning systems, allowing for more precise control over heating. This flexibility can lead to improved comfort and energy savings by targeting specific areas of the home as needed.
• Dependability: Electric resistance heat systems are generally reliable and require minimal maintenance, which makes them a convenient option for homeowners. As a supplemental heat source, they can seamlessly activate when the heat pump’s efficiency declines due to low outdoor temperatures.

What Are the Pros and Cons of Using a Gas Furnace as Supplemental Heat?

Aspect	Pros	Cons
Efficiency	Gas furnaces provide quick heating, resulting in lower energy costs in some climates.	Efficiency may drop if improperly maintained or if the unit is old.
Installation	Generally easier to install in homes with existing gas lines.	Installation costs can be high if new gas lines are needed.
Environmental Impact	Produces less carbon footprint compared to electric heating in certain regions.	Burning gas emits greenhouse gases, contributing to climate change.
Reliability	Gas furnaces often provide consistent heat even during power outages.	Dependence on gas supply can be a risk in emergencies or shortages.
Climate Suitability	More efficient in colder climates where heat pumps struggle, such as northern regions.	Less effective in moderate climates where heat pumps perform well year-round.
Health Risks	Properly maintained units have minimal risks.	Potential risk of carbon monoxide poisoning if not ventilated correctly.
Cost Analysis	Lower operational costs in areas with cheap natural gas.	Higher long-term costs in maintenance and potential gas price increases.

How Do Hydronic Heating Systems Work as Supplemental Heat?

Integration with Heat Pumps: When paired with heat pumps, hydronic systems can be especially beneficial during colder months. The heat pump can handle the primary heating load during milder weather, while the hydronic system kicks in as supplemental heat when temperatures drop, ensuring the home remains warm without overworking the heat pump.

Zone Control: Hydronic heating systems often allow for zoning, meaning different areas of a home can be heated to different temperatures based on individual preferences. This targeted approach not only improves comfort but also contributes to energy savings, as rooms that are not frequently used can remain cooler while living spaces stay warm.

What Are the Key Benefits of Using Supplemental Heat with a Heat Pump?

The key benefits of using supplemental heat with a heat pump include enhanced comfort, improved efficiency in extreme conditions, and better energy management.

• Enhanced Comfort: Supplemental heat sources, such as electric resistance heaters or gas furnaces, can provide a quick boost in warmth during particularly cold weather, ensuring that indoor temperatures remain comfortable. This is especially important in regions where temperatures drop significantly, as heat pumps can struggle to maintain desired indoor conditions under such circumstances.
• Improved Efficiency in Extreme Conditions: When outdoor temperatures fall below a certain threshold, heat pumps can become less efficient or effective at transferring heat. By integrating supplemental heating, homeowners can ensure that their heating system remains efficient and capable of keeping up with demand, thereby reducing the risk of inadequate heating during frigid conditions.
• Better Energy Management: Using supplemental heat effectively allows for better control over energy consumption and costs. Homeowners can strategically use supplemental sources during peak cold times and rely on the heat pump when conditions are milder, optimizing the overall energy use and potentially lowering utility bills.
• Increased Lifespan of Heat Pumps: By not solely relying on the heat pump during extreme cold, supplemental heating can ease the workload on the heat pump. This can lead to less wear and tear on the system, potentially extending its lifespan and reducing the need for repairs or replacements.
• Versatility in Heating Options: Supplemental heat sources can vary widely, from electric heaters to water-based systems, providing flexibility for homeowners to choose the best option for their specific needs and budget. This variety allows for customized heating solutions that can adapt to different scenarios and preferences.

What Factors Should Be Considered When Choosing Supplemental Heat for a Heat Pump?

When choosing the best supplemental heat for a heat pump, several factors must be taken into account to ensure efficiency and effectiveness.

• Climate Zone: The climate in which you live significantly influences the type of supplemental heat you might need. Colder climates may require more robust heating solutions, such as electric resistance heaters or gas furnaces, to maintain comfortable indoor temperatures during extreme cold spells.
• Heat Pump Type: Different types of heat pumps, such as air-source or ground-source, have varying heating capacities and efficiencies. Understanding the specific heat pump model can help determine compatible supplemental heat options that will not overload the system.
• Efficiency Ratings: Look for supplemental heating options with high energy efficiency ratings, such as those certified by ENERGY STAR. More efficient heating solutions can lead to lower energy costs and reduced environmental impact over time.
• Installation Costs: Consider the upfront costs of installing supplemental heat sources, including any necessary modifications to your existing HVAC system. Balancing initial investment with long-term savings is crucial for a cost-effective solution.
• Operating Costs: Evaluate the ongoing operating costs of different supplemental heating options. Some systems may have lower installation costs but higher energy bills, which could negate savings in the long run.
• Space Requirements: Assess the available space for installation of supplemental heating systems. Certain solutions, like baseboard heaters or gas furnaces, may require more room than others, impacting feasibility and choice.
• Local Fuel Availability: The availability and cost of fuel sources in your area can influence your decision. Electric resistance heaters may be more suitable in areas with low electricity costs, while gas or propane heaters could be preferred where those fuels are readily accessible and economical.
• System Compatibility: Ensure that the supplemental heating system you choose is compatible with your existing heat pump setup. Some systems may require specific controls or integration to function effectively alongside your primary heating source.

What Are the Most Energy-Efficient Supplemental Heat Options for Heat Pumps?

The best supplemental heat options for heat pumps are designed to enhance efficiency and maintain comfort during colder months.

• Electric Resistance Heaters: Electric resistance heaters are one of the most common supplemental heating options used with heat pumps. They convert electricity directly into heat and can be easily integrated into existing systems. While they are effective in providing immediate warmth, their operational costs can be higher compared to other options, especially during prolonged cold spells.
• Gas Furnaces: Gas furnaces can serve as a powerful supplemental heat source for heat pumps, particularly in regions with very low temperatures. They provide quick and efficient heating, reducing reliance on the heat pump during extreme conditions. However, the installation of gas lines and the ongoing fuel costs can be significant considerations.
• Hydronic Heating Systems: Hydronic heating systems, which use water heated by a boiler or water heater, can be an efficient supplemental option for heat pumps. They can provide consistent and comfortable warmth through infloor heating or radiators. While installation can be more complex and costly, hydronic systems offer excellent energy efficiency and comfort when properly designed.
• Wood or Pellet Stoves: Wood and pellet stoves are increasingly popular as supplemental heat sources for heat pumps, especially in rural areas. They provide a renewable heating option and can significantly reduce heating bills when used strategically. However, they require regular maintenance and require a supply of fuel, which may not be convenient for all homeowners.
• Mini-Split Systems: Mini-split systems can be an effective supplemental heat source that operates independently from the main heat pump. They can be strategically placed in specific areas of a home that require additional heating, offering flexibility and efficiency. Their ability to provide both heating and cooling makes them a versatile option for year-round comfort.

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