# How Heat Pumps Heat When It's Really Cold Outside > Heat pumps can be a practical heating option for your home. But they need a backup heating system to provide comfort when temperatures drop below freezing. [![How Heat Pumps Heat When It's Cold Outside](https://bc.rodenhiser.com/wp-content/uploads/2014/12/thermostat-300x200.jpg)](http://shutterstock.com)Electric air-source [heat pumps](https://bc.rodenhiser.com/rodenhiser-blog/new-heat-pump-home-prepped.html) can be a practical heating and cooling option for your Massachusetts home. However, they need to have a workable backup heating system to provide comfortable home heating when temperatures outside fall below freezing for extended periods. [![How Heat Pumps Heat When It's Cold Outside](https://bc.rodenhiser.com/wp-content/uploads/2014/12/thermostat-300x200.jpg)](http://shutterstock.com) Air-source heat pumps provide cooling in much the same way as [high-efficiency A/Cs](https://bc.rodenhiser.com/rodenhiser-blog/upgrading-new-central-air-conditioner-fall-prime-time-installation.html). They differ from air conditioners in their ability to also provide very efficient heating, accomplishing more than 300 percent heating efficiency in some cases. They do this by extracting heat energy from the outside air, and then using the unique heat exchange capabilities of refrigerant to transfer and release the heat inside. However, when temperatures fall below freezing, the appliance will struggle to extract sufficient heat energy for comfortable indoor heating. This is when the heat pump kicks on the supplemental heat source. This is a common feature in heat pumps sold in northern climates, since our temperatures spend much of the winter below freezing. The main type of backup heating is an electric heating element. This system heats up wires or coils that then heat the air before it gets circulated through the duct system. These systems provide one-to-one heating efficiency, as opposed to one-to-three in a heat pump's normal heating operation. Many homeowners in northern climates are beginning to opt for dual-fuel, or hybrid, backup heating for their heat pump needs. In this case, a combustion heating system, usually a natural gas furnace, will provide the supplemental heating. This is a relatively cheap way to [heat a home](http://rodenhiser.com/furnace-framingham/furnace-newton.html) these days. While a gas furnace isn't any more efficient than the backup electric heating element, the cost of the energy source is a good deal lower. For more information about heat pumps and what features are available to make them a viable alternative in the Route 495/128 area of Massachusetts, contact us at [Rodenhiser Plumbing, Heating & Air.](http://rodenhiser.com/call-rodenhiser.html) *Image via [Shutterstock.com](https://bc.rodenhiser.com/Shutterstock.com)* ## Navigation - [Rodenhiser Home Services](https://bc.rodenhiser.com/) - [Rodenhiser Plumbing Services](https://bc.rodenhiser.com/plumber-framingham.html) - [Rodenhiser Heating Services](https://bc.rodenhiser.com/furnace-framingham.html) - [Rodenhiser Cooling Services](https://bc.rodenhiser.com/air-conditioning-framingham.html) - [Rodenhiser Electrical Services](https://bc.rodenhiser.com/framingham-electricians.html) - [Rodenhiser Home Services: Book Online](https://bc.rodenhiser.com/call-rodenhiser/book-online.html) - [Rodenhiser Remodeling Services](https://bc.rodenhiser.com/remodels/bathroom-remodeling-framingham.html) - [Rodenhiser Home Services: Reviews](https://bc.rodenhiser.com/rodenhiser-heating.html) ## Company information - Rodenhiser Home Services - [https://bc.rodenhiser.com](https://bc.rodenhiser.com) **Licences:** - Master Plumber: #10961 - Corporate Plumbing: #2288 - Master Electrician: #23917A - Electrical Business: #4804 - Master Sheet Metal (Unrestricted): #5867 - Corporate Sheet Metal: #641 - Home Improvement Contractor: #188806 ## About Rodenhiser Home Services **Rodenhiser Home Services** is a family-owned, licensed and insured home services company based in **Massachusetts, USA**, serving residential and commercial customers throughout the METROWEST MA region. Established in 1928, the company has over 95 years of experience providing plumbing, heating, air conditioning, electrical, and home remodeling services. Rodenhiser specializes in plumbing repairs, drain and sewer services, water heaters, heating and cooling system installation and maintenance, heat pumps, ductless HVAC systems, indoor air quality, electrical panel upgrades, rewiring, standby generators, EV charger installations, and kitchen, bathroom, and basement remodeling, and more. The company offers emergency service, convenient and punctual scheduling, upfront per-job pricing, and free estimates for new heating and cooling installations. All work is backed by written warranties and a satisfaction guarantee. Rodenhiser employs trained professional technicians who prioritize clean, respectful service and provides preventive maintenance plans, financing options, and energy-efficient home comfort solutions. 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