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Integrated Controls When you leave an existing central heating system (boiler or furnace) in place, and plan to use your heat pump as much as you can, it’s important to understand how the heat pump co-exists with the central system. If the heat pump is a centrally-ducted dual-fuel system, there will be one thermostat to handle both devices. But a central furnace or boiler may not “play well” with ductless unit(s) that are controlled with the typical hand-held remote. Depending on your house, there may be options for better controls. These include fairly standard wall-mounted thermostats (these may be wired or wireless) that help a ductless heat pump to better monitor the temperature of the whole room, or they may include “integrated controls” that manage both the heat pump(s) and the existing heating system. This will minimize the use of your existing heat while maximizing the use of the heat pump – and maximizing your savings. Once Your Heat Pump is Installed There are a few things that make heat pumps different from other heating equipment you may be used to. Heat pumps naturally develop frost on the outdoor unit during operation, so all heat pumps have defrost cycles that will happen for a few minutes, every hour or so, when it’s cold outside. The unit may make gurgling sounds and briefly stop heating, but this is normal. In general, modern cold-climate heat pumps maintain a very warm output temperature even at below zero outdoor temperatures, but the air coming from the unit may not feel as “hot” as a conventional furnace. Cold- climate heat pumps will provide the most efficiency when the thermostat is not turned up and down dramatically – set it for comfort, but generally “set it and forget it”. It will continue to produce heat (or cooling) at a slow and steady pace, which enhances comfort and saves you money. Also, it’s important to keep snow from piling up on or around the outdoor unit. That’s why it needs to be mounted up off the ground, but in extreme snow or drifting winds it’s good to check up and (gently!) shovel around and below the unit to keep it clear. Remember to change or wash the air filter(s) regularly. ASHP Myth #3: Heat pumps blow cold air Heat pumps from past decades frequently had two problems that caused cold air to blow, leading to lots of comfort complaints. Every time they came on, the fan would run full blast, delivering cold air from the basement or attic as the heating coil slowly warmed up. Combined with the seriously reduced heating capacity of older models in cold weather, the air temperature at the supply registers would often feel cool or even cold. Modern cold climate systems have variable speed fans, improved controls and higher heating output – all working together to maintain cozy, warm temperatures. Refer to NEEP’s guide, Getting The Most Out of Your Heat Pump for lots more details and many helpful operating tips. 18PDF Image | Air Source Heat Pump Buying Guide
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Heat Pumps CO2 ORC Heat Pump System Platform More Info
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