Heat pumps do not “shut off” at 32°F. Even when outdoor temperatures fall well below freezing, there is still heat energy in the air. Cold-climate systems are designed to extract that heat and concentrate it indoors.

That doesn’t mean that your heat pump will continue running like it would at 40°F. As temperatures drop, two things happen:

1. The system’s heating capacity gradually decreases.
2. Efficiency declines compared to mild conditions.

However, the Mitsubishi Electric heat pumps installed by Royal River Heat Pumps can deliver their full heating output even when outdoor temperatures drop to 5°F. They are designed to continue operating at temperatures as low as -13°F, rather than shutting down when it gets extremely cold. In southern Maine, the majority of winter hours fall within the temperature range where these systems operate very efficiently.

Extreme subzero stretches do happen in our area, but they represent a relatively small portion of the overall heating season.

During winter operation, heat pumps periodically enter defrost mode.

When the outdoor coil becomes frosted, the system temporarily reverses operation to melt the ice. You may see steam rising from the outdoor unit or hear the fan slow down briefly. Water may drain from the bottom of the unit.

Defrost cycles are automatic and typically last only a few minutes. A properly installed system returns to heating mode quickly without significant impact on indoor comfort.

In most cases, it is not the equipment. It is the installation.

We have seen heat pumps oversized just to qualify for rebates, undersized to reduce upfront cost, or placed in locations where airflow cannot distribute properly throughout the home.

In those scenarios, the living room may feel warm while bedrooms lag behind. Or the system may struggle during cold stretches because the home’s insulation and air sealing were never evaluated.

When a system is designed based on building science principles and accurate load calculations, heat pump winter performance looks very different.

At Royal River Heat Pumps, we exclusively install residential heat pump systems in Freeport and the surrounding coastal region, from Kennebunkport to Boothbay Harbor. We’ve installed thousands of heat pumps in Maine since 2013. Visit our Testimonials page to hear from the many Mainers who love their heat pumps and rely on them all winter long.

If you are considering a heat pump and want an honest assessment of how it would perform in your home, we are ready to help you explore your options.

The choice between ducted and ductless is rarely about which system is “better.” It is about which system fits the house.

Air Distribution

Ducted systems push air through multiple vents, which can provide more uniform whole-home coverage when ducts are properly designed.

Mini-splits deliver air directly into the space where they are mounted. In open layouts, this can work beautifully. In homes with multiple small rooms and closed doors, additional units or careful planning may be required.

Existing Ductwork Condition

Many Maine homes have older duct systems that were not designed for modern heat pump airflow requirements.

Leaky or undersized ducts can reduce performance. In some cases, modifying or replacing ductwork makes sense. In others, ductless systems may be the more practical and efficient solution.

Visibility and Aesthetics

Ducted systems keep equipment mostly hidden inside your home.

Mini-splits involve visible indoor units. While many homeowners appreciate their clean, modern look, placement should always balance performance and appearance.

Outdoor unit placement and line set routing are also part of the design conversation.

The biggest mistake is when a heat pump company recommends a ducted or ductless heat pump system for the wrong reasons.

Sometimes the choice is made based on what is easiest for them to install. In other cases, systems are configured primarily to qualify for a larger Efficiency Maine heat pump rebate.

We have seen oversized single-zone systems installed simply to meet rebate thresholds. We have also seen ducted systems connected to ductwork that was never evaluated for proper airflow. In both cases, the equipment itself may be high quality, but the comfort result is not.

Royal River Heat Pumps does not automatically default to ducted or ductless heat pumps.

Every home is evaluated individually. We review insulation levels, duct condition, layout, electrical capacity, and long-term goals. From there, we design a system that fits the home rather than forcing the home to fit the equipment.

Both ducted heat pumps and mini-splits can perform exceptionally well in Maine winters when they are properly designed, sized, and installed. We’re proof of that, and since 2013, we’ve installed thousands of heat pumps that were the right fit for the home.

If you are considering heat pump installation and want an honest recommendation based on your specific home, Royal River Heat Pumps is ready to help you explore your options.

Oil and Propane

Homes heated with oil or propane often see meaningful reductions in heating costs after installing a properly sized cold-climate heat pump. These fuels are typically among the more expensive ways to heat a home, and replacing all or a large portion of that fuel use with efficient electric heating can reduce overall energy spending.

Electric Resistance Heat

If your home relies on electric baseboard or electric resistance heating, heat pumps will significantly reduce heating costs. Electric resistance systems create heat directly, while heat pumps move heat. That difference in efficiency translates into lower winter electric bills.

Natural Gas

Natural gas is currently one of the least expensive heating fuels available in much of Maine.

If your home is already heated with natural gas, especially at competitive utility rates, you are unlikely to see meaningful heating cost savings by switching entirely to a heat pump. In many cases, operating costs may be similar. In some scenarios, they may even be slightly higher.

Of course, just because you won’t save money immediately doesn’t mean a heat pump isn’t a worthwhile investment (see more on this below).

At Royal River Heat Pumps, we do not promise specific dollar savings before evaluating your home. We also don’t ignore the tradeoffs.

But during your free consultation, we will review:

• Your existing heating system
• Insulation and air sealing
• Electrical capacity
• Layout and airflow
• Your long-term goals

If a heat pump is likely to reduce your heating costs, we’ll explain how. If the savings are expected to be modest or depend heavily on usage patterns, we’ll tell you.

We’ll never sell you a system based on unrealistic claims. Our goal is to design a solution that delivers comfort, reliability, and strong long-term performance in Maine’s climate.

If you are considering upgrading your home and want an honest assessment of exactly what to expect, Royal River Heat Pumps is the heat pump company to talk to. Since 2013, we’ve installed thousands of heat pumps in homes from Kennebunkport to Scarborough, Portland, Freeport, and up to Boothbay Harbor.

Visit our testimonials page to see how happy Mainers are when they choose Royal River.