To quickly quiet a loud heat pump at night, verify the unit's settings for a Quiet Mode (reduces fan and compressor speeds during scheduled hours). If none exists, address vibrations by placing anti-vibration rubber or neoprene pads under the feet of the unit, or install a Compressor Sound Blanket.
During the colder months, your heat pump will need to work harder to get up to the desired temperature, so you may experience more noise during winter. Heat pumps may make noise if the unit is not levelled or securely mounted. If a heat pump is placed close to walls, this could cause echoes or vibrations.
The heat pump compressor may rattle from the inside, especially if your pump is older. In this case, you want to reduce the sound from the inside. You can use a soundproof blanket made with Quiet Barrier® soundproofing material to prevent the noise from transmitting outside.
Early air source heat pumps were noisy, but technology has evolved – resulting in quieter, more efficient modern heat pumps. When on, they make between 40-60 decibels of noise on average, at a distance of 1 metre. This is classed as a low to average level.
The "20-degree rule" for heat pumps and air conditioners refers to the recommended limit on the temperature difference between the outside air and the indoor air. During summer, experts advise that you do not set your thermostat more than 20 degrees cooler than the outdoor temperature.
Yes, it is perfectly okay—and often recommended—for a heat pump to run all night in winter. Because heat pumps extract existing heat from the outside air rather than creating it, they are designed to run in long, slow cycles to efficiently maintain a consistent temperature.
If your electric bill is unusually high, your heat pump is likely relying heavily on backup "strip" heat (which consumes significantly more electricity) during cold weather, the thermostat is set too high or incorrectly wired, or your home lacks adequate insulation.
In mild winter weather, a heat pump typically kicks on 2 to 3 times per hour, with cycles lasting 10 to 15 minutes. However, on freezing or highly frigid days, it is completely normal for the system to run for longer periods or even continuously to maintain a steady indoor temperature.
The quietest central heat pumps on the market are made by Bosch and Mitsubishi, which produce outdoor units operating between 44 and 56 dB(A). For traditional ducted units, Carrier and Trane also offer premium variable-speed systems reaching as low as 55-57 dB(A).
Although the noise is minimal, there is a potential they could hear it running. We recommend a barrier such as a fence or a hedge is installed between you and your neighbours to reduce noise levels. Where possible, we also recommend not installing a heat pump on the corner of your property.
Yes, heat pumps typically make more noise during winter. They work harder to extract heat from cold air, run longer cycles, and operate defrost sequences. Cold air also carries sound better than warm air, making normal operation seem louder.
Udderly Quiet Fabric-Covered Foam
Lining your ductwork with Udderly Quiet Fabric-Covered Foam helps reduce noise from the air in your HVAC system without risking a fire.
Safe DIY Fixes for Heat Pump Noise
Essential tasks include cleaning or replacing filters, tightening any loose screws or panels, and clearing debris from around the outdoor unit. These steps help ensure the system runs smoothly and quietly, reducing the likelihood of unexpected noises.
For standard heat pumps, it is generally best to set it and forget it. Unlike gas furnaces, heat pumps are most efficient when maintaining a consistent temperature. Lowering the temperature overnight will often cause the system to use more energy to warm up in the morning.
Outdoor Heat Pump Unit Freezing
One common problem is the outdoor unit freezing when temperatures drop too low. Ice buildup can obstruct airflow, reducing the unit's ability to capture heat. Most heat pumps have a defrost cycle to handle this, which usually solves the problem.
What should you do if the noise from your neighbour's heat pump bothers you? How to reduce the noise of a heat pump?
Guide to the Quietest Heat Pumps
Leading manufacturers such as Daikin, Grant UK, Ideal Heating, LG Electronics, Samsung, Vaillant, Warmflow, and Worcester Bosch offer Quiet Mark certified models, providing a variety of options to suit different needs and preferences.
The "black hose trick" is a popular, low-cost DIY method used to heat swimming pools or provide outdoor showers. It relies on a simple principle: because black absorbs the sun’s radiant heat, passing water through a black hose laid in direct sunlight warms the water naturally.
The most efficient heat pump setting for winter is a consistent temperature close to your comfort level, typically around 68 degrees, without frequent thermostat adjustments.
There is no single "highest rated" brand, as rankings vary by priority. However, industry reviews consistently name Mitsubishi for ductless/reliability, Lennox for maximum energy efficiency, and Carrier or Trane for whole-house ducted systems and customer satisfaction.
The "30-minute heating rule" is a highly efficient, money-saving thermostat strategy that involves turning your heating system on 30 minutes before you need a space warmed up, and turning it off 30 minutes before you no longer need it.
The major disadvantage of a heat pump is its reduced efficiency in sub-freezing weather. Because they extract ambient heat from the outside air rather than generating it, heat pumps struggle to warm homes in extremely cold climates without supplemental backup heat.
This is especially true if your house has a heat pump. Heat pumps are most efficient until temperatures fall below 30 degrees outside. Once the temps dip below that, heat pumps can't run as efficiently to keep up with the cold, and backup electricity often kicks on.
Heat Pump Runtime: What to Expect
On average, a heat pump runs in cycles for about 2–3 hours per day. However, this can fluctuate based on the factors listed above. During extreme weather conditions, your system may run continuously to maintain a comfortable environment.