Overview
A heat pump moves heat rather than creating it. In summer it works like an air conditioner, pulling heat out of the house. In winter it reverses, extracting heat from outdoor air and bringing it inside. Because it moves heat instead of burning fuel, a heat pump can deliver more heat energy than the electricity it uses, which is why it has become a popular replacement option for both air conditioners and furnaces.
Modern cold-climate heat pumps are designed to keep producing heat at much lower outdoor temperatures than older models, though capacity generally drops as it gets colder. Many installations pair a heat pump with a backup heat source, such as electric resistance strips or an existing gas furnace in a dual-fuel setup, so the system can switch to the backup during the coldest periods.
Heat pumps come in ducted versions that connect to existing ductwork and ductless mini-split versions with wall, ceiling or floor heads. The best choice depends on whether the home has ducts in good condition, how many rooms need conditioning and how the household uses the space.
How it typically works
- Explaining defrost cycles and normal operating sounds.
- Recommending a ducted, ductless or dual-fuel configuration with an explanation of trade-offs.
- Selecting a backup heat strategy appropriate for the climate.
- Configuring controls, including the balance point at which backup heat engages.
- Assessing the home's heating and cooling load, with attention to the coldest expected conditions.
- Reviewing existing ductwork, electrical capacity and the location for the outdoor unit.
- Installing the outdoor unit with adequate clearance, including snow clearance where relevant.
Things worth considering
- Cold-weather performance varies by model. Ask for the unit's rated capacity at low outdoor temperatures, not just its nominal size.
- Electrical upgrades may be needed. Some homes need panel or circuit changes to support a heat pump and backup heat.
- Operating cost depends on local electricity and gas prices. A contractor can help compare scenarios, but rates change.
- Defrost cycles are normal. In cold, humid conditions the outdoor unit periodically defrosts, which can produce steam and brief noise.
- Controls affect efficiency. A thermostat that isn't set up for a heat pump may call for backup heat more often than needed.
- Incentives are frequently offered for heat pumps. Programs and eligibility rules change, so confirm current details.
Local notes for Castle Rock
At higher elevations, thinner air affects combustion and airflow, and gas furnaces are often derated or configured for altitude according to manufacturer instructions. Ask whether equipment is set up for your elevation.
Colorado's dry climate means many households consider humidification in winter, while summer cooling loads can be significant on hot, sunny days. Large day-to-night temperature swings are also common.
We take inquiries from Castle Rock, Castle Pines, Parker, Larkspur, Franktown.
Getting ready to reach out
- If you smell gas or suspect carbon monoxide, leave the home and contact your gas utility or emergency services first, before sending any inquiry.
- Note the make, model and approximate age of your furnace, air conditioner or heat pump. The label is usually on the side of the unit or inside a panel.
- Mention what you have already checked, such as the thermostat batteries and settings, the filter and the breaker.
- Note any rooms that are consistently too hot or too cold, which can point to duct or zoning issues.
- Describe the symptom in plain terms: no heat, weak airflow, short cycling, odd smells, noises or a thermostat that will not respond.
Warning signs
- Quotes that leave out duct, electrical or venting changes that the new equipment will clearly need.
- No explanation of manufacturer warranty registration or labor warranty terms.
- Claims that equipment is dangerous without explaining the specific problem or showing you what was found.
- A replacement recommendation without a load calculation or any measurement of the home.
- Pressure to buy immediately with a deal that expires the same day.
How to vet a provider
- What is this unit's heating capacity at the coldest temperatures we usually see?
- Do you recommend dual-fuel or electric backup for my home, and why?
- Will my electrical panel need an upgrade?
- How will you set the balance point and thermostat for efficient operation?
- How do you protect the outdoor unit from snow and ice?
- Are there rebates or tax incentives I might qualify for, and do you help with paperwork?
- What maintenance does a heat pump need compared with an AC?
Frequently asked
- Do heat pumps work in cold climates?
- Cold-climate models are designed to produce heat at low outdoor temperatures, and many systems include backup heat for the coldest days. Performance depends on the specific model and installation.
- What is a dual-fuel system?
- A dual-fuel system pairs an electric heat pump with a gas furnace. The heat pump handles moderate weather and the furnace takes over when it is colder or when it's more economical.
- Why is steam coming from my heat pump in winter?
- That's typically the defrost cycle melting frost from the outdoor coil. It's normal operation.
Related topics
- Air Conditioning Installation: What goes into a central AC installation, sizing and efficiency choices, and questions to ask an HVAC contractor before you sign.
- Thermostats and Controls: Smart and programmable thermostats, zoning and controls, and what to ask an HVAC pro before upgrading.
- Ductwork and Indoor Air Quality: Duct sealing, repair, cleaning and indoor air quality options, plus what to ask an HVAC contractor.
Tell us a little about what you need, and we'll get back to you about heat pumps.